SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0136 AM CDT Thu Sep 12 2024 Valid 131200Z - 141200Z ...NO CRITICAL AREAS... ...Synopsis... As the upper trough and the associated cold front continue to the east, high pressure will quickly develop behind them over much of the Great Basin and Intermountain West. A much cooler and quiescent air mass will also develop, keeping winds relatively light with increasing relative humidity. Additionally, precipitation associated with the upper trough should moderate fuels across much of the West and Plains. A few stronger gusts may remain across parts of the southern High Plains and eastern WY. Pockets of lower RH may also remain in place temporarily before moisture increases later tonight. However, the expected duration and coverage of these locally stronger winds and drier conditions should be brief. With only modest overlap of dry and windy conditions atop dry fuels, fire-weather concerns are too localized for any highlights. ..Lyons.. 09/12/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0135 AM CDT Thu Sep 12 2024 Valid 121200Z - 131200Z ...CRITICAL FIRE WEATHER AREA FOR MUCH OF THE HIGH PLAINS AND FRONT RANGE... ...Synopsis... A deep mid-level trough over the northern Rockies is forecast to intensify as it moves eastward and ejects over the northern/central Plains today and tonight. As the trough moves east, a lee low/trough will quickly deepen, supporting strong surface winds over the Plains. A cold front approaching from the west will move through the Great Basin also supporting strong surface winds over the Rockies. Dry and windy conditions will favor critical fire-weather concerns across the Intermountain West and western Plains through this evening. ...Central and northern Plains... As the upper-level trough approaches from the west this morning, southerly surface winds are expected to rapidly increase over much of the High Plains. Winds should continue to intensify through the day as low pressure and the trailing lee trough deepen. South/southwesterly gusts of 20-30 mph are possible along with RH values below 25%. RH will be considerably higher farther east, as low-level moisture advects northward. Still, strong gusts of 25-30 mph are likely with pockets of afternoon RH as low as 25-30%. Strong winds will accelerate drying of fine fuels after recent scattered precipitation, with critically dry fuels expected over much of the central and northern Plains by this afternoon. With the potent combination of strong winds and low RH likely over several hours, widespread elevated to critical fire-weather conditions are expected. ...Intermountain West... Across parts of western CO/WY, strong southwesterly winds are expected ahead of the cold front moving out of the eastern Great Basin. Aided by the strong flow aloft, wind gusts of 25-30 mph are likely. Dry southwesterly flow and warm temperatures will support afternoon RH values below 20%. Meteorological conditions are quite conducive to fire spread. Despite some recent drying, area fuels are not particularly dry after rainfall in the last 48 hours. However, given the magnitude of the wind and relatively dry conditions, several hours of elevated to near-critical fire-weather conditions still appear likely, especially over parts of western CO and eastern UT. ..Lyons.. 09/12/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0135 AM CDT Thu Sep 12 2024 Valid 121200Z - 131200Z ...CRITICAL FIRE WEATHER AREA FOR MUCH OF THE HIGH PLAINS AND FRONT RANGE... ...Synopsis... A deep mid-level trough over the northern Rockies is forecast to intensify as it moves eastward and ejects over the northern/central Plains today and tonight. As the trough moves east, a lee low/trough will quickly deepen, supporting strong surface winds over the Plains. A cold front approaching from the west will move through the Great Basin also supporting strong surface winds over the Rockies. Dry and windy conditions will favor critical fire-weather concerns across the Intermountain West and western Plains through this evening. ...Central and northern Plains... As the upper-level trough approaches from the west this morning, southerly surface winds are expected to rapidly increase over much of the High Plains. Winds should continue to intensify through the day as low pressure and the trailing lee trough deepen. South/southwesterly gusts of 20-30 mph are possible along with RH values below 25%. RH will be considerably higher farther east, as low-level moisture advects northward. Still, strong gusts of 25-30 mph are likely with pockets of afternoon RH as low as 25-30%. Strong winds will accelerate drying of fine fuels after recent scattered precipitation, with critically dry fuels expected over much of the central and northern Plains by this afternoon. With the potent combination of strong winds and low RH likely over several hours, widespread elevated to critical fire-weather conditions are expected. ...Intermountain West... Across parts of western CO/WY, strong southwesterly winds are expected ahead of the cold front moving out of the eastern Great Basin. Aided by the strong flow aloft, wind gusts of 25-30 mph are likely. Dry southwesterly flow and warm temperatures will support afternoon RH values below 20%. Meteorological conditions are quite conducive to fire spread. Despite some recent drying, area fuels are not particularly dry after rainfall in the last 48 hours. However, given the magnitude of the wind and relatively dry conditions, several hours of elevated to near-critical fire-weather conditions still appear likely, especially over parts of western CO and eastern UT. ..Lyons.. 09/12/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1235 AM CDT Thu Sep 12 2024 Valid 131200Z - 141200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN A PART OF THE TN VALLEY TO THE FL PANHANDLE... ...SUMMARY... A couple brief tornadoes and locally damaging winds are possible across a part of the Southeast on Friday morning into the afternoon. ...Southeast... The remnants of TC Francine are expected to decay in place near the AR/TN/MO border vicinity on Friday, with greater weakening of low-level winds relative to today. Still, the strongest lingering belt of low-level southeasterlies should persist through Friday morning into the afternoon to the east, centered on the TN Valley. This should yield moderate SRH coincident with the northern extent of weak surface-based instability from central AL/far western GA northward into Middle TN. This corridor will likely be narrow at any one time and steadily shift east through the day. A drier air mass with veered low-level winds is expected to its west, and cooler surface temps beneath pervasive cloudiness should occur to its northeast. A couple brief tornadoes will be possible, mainly from mid-morning into the afternoon. Low-level winds will diminish with southern extent to the FL Panhandle, but moderate mid-level southwesterlies should yield adequate deep-layer shear for transient mid-level rotation. Modest boundary-layer heating of a residual tropical air mass should occur within a corridor ahead of an occluded surface front. Locally strong gusts capable of sporadic tree damage remain possible. ..Grams.. 09/12/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1243 AM CDT Thu Sep 12 2024 Valid 121200Z - 131200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN ASSOCIATION WITH TS FRANCINE AND OVER THE EASTERN MONTANA REGION... ...SUMMARY... A few tornadoes are possible today, mainly in the morning and afternoon from the Florida Panhandle to north-central Alabama. Scattered large hail and severe gusts are expected across the eastern Montana vicinity during the afternoon to early evening. ...Tropical Storm Francine... TS Francine continues its slow drift inland, and is expected to progress across southern/central MS to near Memphis by the end of the period. Strong low-level shear will spread/develop north, to the immediate north-east of the center of circulation. As is typical, poor lapse rates will limit buoyancy today, and latest model guidance suggests only a narrow corridor of weak-modest 0-3km lapse rates, primarily across southwestern into west-central AL. Robust, long-lived supercells have struggled to develop with this system, and forecast thermodynamic profiles are not particularly impressive. Even so, scattered lightning is noted with deeper updrafts offshore, along with a few supercells. This activity will spread inland later this morning and there remains some concern for a few tornadoes where boundary-layer destabilization is maximized. ...Eastern Montana Region... Strong upper trough has progressed into the northern Intermountain region, from western ID into NV. This trough will advance into the northern Rockies later today as a 500mb speed max translates across UT into eastern WY/MT. This evolution will warrant a cold front surging into eastern MT/northwest WY by 18z. Greatest boundary-layer heating will initially be across eastern WY, but significant surface heating across eastern MT should lead to steep 0-3km lapse rates and convective temperatures will likely be breached across northern WY/southern MT by 20z. Deep convection should readily develop over the Big Horn Mountains/surrounding higher terrain as the left-exit region of the 500mb speed max approaches. Latest HREF guidance strongly favors robust convection evolving by mid afternoon, with several long-lived supercells depicted in most members. Forecast soundings favor sustained rotating updrafts and high-based convection should generate strong winds, and perhaps large hail. While PWs are seasonally low, ample buoyancy will likely exist for allowing this activity to spread into western ND later in the evening, especially given the strengthening LLJ across this portion of the Dakotas after sunset. ..Darrow/Lyons.. 09/12/2024 Read more

SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1243 AM CDT Thu Sep 12 2024 Valid 121200Z - 131200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN ASSOCIATION WITH TS FRANCINE AND OVER THE EASTERN MONTANA REGION... ...SUMMARY... A few tornadoes are possible today, mainly in the morning and afternoon from the Florida Panhandle to north-central Alabama. Scattered large hail and severe gusts are expected across the eastern Montana vicinity during the afternoon to early evening. ...Tropical Storm Francine... TS Francine continues its slow drift inland, and is expected to progress across southern/central MS to near Memphis by the end of the period. Strong low-level shear will spread/develop north, to the immediate north-east of the center of circulation. As is typical, poor lapse rates will limit buoyancy today, and latest model guidance suggests only a narrow corridor of weak-modest 0-3km lapse rates, primarily across southwestern into west-central AL. Robust, long-lived supercells have struggled to develop with this system, and forecast thermodynamic profiles are not particularly impressive. Even so, scattered lightning is noted with deeper updrafts offshore, along with a few supercells. This activity will spread inland later this morning and there remains some concern for a few tornadoes where boundary-layer destabilization is maximized. ...Eastern Montana Region... Strong upper trough has progressed into the northern Intermountain region, from western ID into NV. This trough will advance into the northern Rockies later today as a 500mb speed max translates across UT into eastern WY/MT. This evolution will warrant a cold front surging into eastern MT/northwest WY by 18z. Greatest boundary-layer heating will initially be across eastern WY, but significant surface heating across eastern MT should lead to steep 0-3km lapse rates and convective temperatures will likely be breached across northern WY/southern MT by 20z. Deep convection should readily develop over the Big Horn Mountains/surrounding higher terrain as the left-exit region of the 500mb speed max approaches. Latest HREF guidance strongly favors robust convection evolving by mid afternoon, with several long-lived supercells depicted in most members. Forecast soundings favor sustained rotating updrafts and high-based convection should generate strong winds, and perhaps large hail. While PWs are seasonally low, ample buoyancy will likely exist for allowing this activity to spread into western ND later in the evening, especially given the strengthening LLJ across this portion of the Dakotas after sunset. ..Darrow/Lyons.. 09/12/2024 Read more

WW 0668 Status Updates
STATUS FOR WATCH 0668 HAS NOT BEEN ISSUED YET Read more

WW 0667 Status Updates
STATUS REPORT ON WW 667 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 105 SSE BVE TO 45 ESE BVE TO 30 ENE BVE TO 30 ESE MSY TO 5 W MSY TO 25 W MSY TO 50 WNW MSY TO 55 SW MCB. ..JEWELL..09/12/24 ATTN...WFO...LIX...LCH...MOB... STATUS REPORT FOR WT 667 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS LAC063-071-087-095-103-105-117-120240- LA . LOUISIANA PARISHES INCLUDED ARE LIVINGSTON ORLEANS ST. BERNARD ST. JOHN THE BAPTIST ST. TAMMANY TANGIPAHOA WASHINGTON MSC045-047-059-109-120240- MS . MISSISSIPPI COUNTIES INCLUDED ARE HANCOCK HARRISON JACKSON PEARL RIVER GMZ530-532-534-536-538-555-557-575-577-632-650-670-120240- CW . ADJACENT COASTAL WATERS INCLUDED ARE Read more

MD 2056 CONCERNING TORNADO WATCH 667... FOR PORTIONS OF SOUTHEASTERN LOUISIANA...FAR SOUTHERN MISSISSIPPI AND SOUTHWEST ALABAMA
Mesoscale Discussion 2056 NWS Storm Prediction Center Norman OK 0720 PM CDT Wed Sep 11 2024 Areas affected...portions of southeastern Louisiana...far southern Mississippi and southwest Alabama Concerning...Tornado Watch 667... Valid 120020Z - 120145Z The severe weather threat for Tornado Watch 667 continues. SUMMARY...The tornado threat continues over the northeastern quadrant of Francine. While storms have not been overly active so far, strong low-level shear remains in place and a greater threat could evolve tonight. DISCUSSION...As of 0015z, the center of Hurricane Francine was located 55 miles southwest of New Orleans, LA. Within the northeastern quadrant, low-level hodographs have continued to enlarge this evening with the HDC VAD showing 500-600 m2/s2 of 0-1km SRH. While low-level shear remains very strong, east/northeasterly surface flow has prevented the more unstable air mass farther south from moving inland to this point. As the center of Francine continues to move inland, low-level flow should begin to veer, allowing the higher theta-E air mass to move onshore. This looks most likely to occur over eastern portions of WW667 into southern MS and far southwest AL later this evening. Convective cells within the eastern most spiral bands have shown more cellular mode and occasional rotation. Hi-res guidance shows a few of these supercells potentially moving inland tonight. Ahead of these storms, RAP soundings show enlarging hodographs and modest buoyancy (~500-700 J/kg of MLCAPE) that could support the potential for a few tornadoes this evening. ..Lyons.. 09/12/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MOB...JAN...LIX... LAT...LON 30608816 30298753 30158747 29678755 29548789 29538851 29418889 29308918 29418958 29779059 30059076 30439054 30629042 30938974 30928909 30818852 30608816 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Wed Sep 11 2024 Valid 120100Z - 121200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE CENTRAL GULF COAST IN ASSOCIATION WITH HURRICANE FRANCINE.... ...SUMMARY... Tornado threat continues with Hurricane Francine across the middle Gulf Coast region. ...01z Update... Center of Hurricane Francine has moved onshore and will continue lifting slowly north through sunrise. Stronger, deeper updrafts are currently located within the eastern hemisphere of the low, per lightning data, along with a few longer-lived supercells. Have adjusted severe probabilities down along the western portion of Francine to reflect the latest position. Tornado threat continues with stronger supercells. High-level diffluent flow is noted across the northern Rockies this evening ahead of a pronounced short-wave trough that currently extends across eastern WA/OR into NV. 500mb speed max will dig into the base of the trough later tonight across the Great Basin which will ensure the left-exit region of the jet will spread across eastern ID/southern MT/western WY. Considerable amount of lightning is currently noted with convection ahead of the short wave, and some stronger wind gusts have also been observed. 00z sounding from Great Falls, MT exhibited meager buoyancy, but steep lapse rates are contributing to MLCAPE on the order of 500 J/kg across southern MT into eastern ID/western WY. This continues to favor some risk for locally severe winds with the more robust convection this evening. ..Darrow.. 09/12/2024 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0740 PM CDT Wed Sep 11 2024 Valid 120100Z - 121200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE CENTRAL GULF COAST IN ASSOCIATION WITH HURRICANE FRANCINE.... ...SUMMARY... Tornado threat continues with Hurricane Francine across the middle Gulf Coast region. ...01z Update... Center of Hurricane Francine has moved onshore and will continue lifting slowly north through sunrise. Stronger, deeper updrafts are currently located within the eastern hemisphere of the low, per lightning data, along with a few longer-lived supercells. Have adjusted severe probabilities down along the western portion of Francine to reflect the latest position. Tornado threat continues with stronger supercells. High-level diffluent flow is noted across the northern Rockies this evening ahead of a pronounced short-wave trough that currently extends across eastern WA/OR into NV. 500mb speed max will dig into the base of the trough later tonight across the Great Basin which will ensure the left-exit region of the jet will spread across eastern ID/southern MT/western WY. Considerable amount of lightning is currently noted with convection ahead of the short wave, and some stronger wind gusts have also been observed. 00z sounding from Great Falls, MT exhibited meager buoyancy, but steep lapse rates are contributing to MLCAPE on the order of 500 J/kg across southern MT into eastern ID/western WY. This continues to favor some risk for locally severe winds with the more robust convection this evening. ..Darrow.. 09/12/2024 Read more

WW 0667 Status Updates
STATUS REPORT ON WW 667 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 110 S BVE TO 50 S BVE TO 15 SSW BVE TO 20 W BVE TO 30 E HUM TO 5 NE HUM TO 20 WNW HUM TO 40 WNW HUM TO 45 NW HUM TO 50 SW MCB. ..JEWELL..09/11/24 ATTN...WFO...LIX...LCH...MOB... STATUS REPORT FOR WT 667 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS LAC005-007-047-051-057-063-071-075-087-089-093-095-103-105-117- 120040- LA . LOUISIANA PARISHES INCLUDED ARE ASCENSION ASSUMPTION IBERVILLE JEFFERSON LAFOURCHE LIVINGSTON ORLEANS PLAQUEMINES ST. BERNARD ST. CHARLES ST. JAMES ST. JOHN THE BAPTIST ST. TAMMANY TANGIPAHOA WASHINGTON MSC045-047-059-109-120040- MS . MISSISSIPPI COUNTIES INCLUDED ARE HANCOCK HARRISON JACKSON PEARL RIVER GMZ530-532-534-536-538-555-557-575-577-632-650-670-120040- Read more

WW 667 TORNADO LA MS CW 111740Z - 120400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 667 NWS Storm Prediction Center Norman OK 1240 PM CDT Wed Sep 11 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southern Louisiana Far Southern Mississippi Coastal Waters * Effective this Wednesday afternoon and evening from 1240 PM until 1100 PM CDT. * Primary threats include... Several tornadoes likely SUMMARY...Hurricane Francine will continue to approach the southern Louisiana coast and move inland as it progresses northeastward across the region through tonight. The potential for tornadoes is expected to increase through the afternoon and early evening. The tornado watch area is approximately along and 70 statute miles north and south of a line from 60 miles west southwest of Houma LA to 40 miles east southeast of Gulfport MS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 16045. ...Guyer Read more

MD 2053 CONCERNING TORNADO WATCH 667... FOR PORTIONS OF SOUTHERN AND EASTERN LOUISIANA INTO SOUTHERN MISSISSIPPI
Mesoscale Discussion 2053 NWS Storm Prediction Center Norman OK 0323 PM CDT Wed Sep 11 2024 Areas affected...portions of southern and eastern Louisiana into southern Mississippi Concerning...Tornado Watch 667... Valid 112023Z - 112200Z The severe weather threat for Tornado Watch 667 continues. SUMMARY...The severe threat continues across Tornado Watch 667. A brief tornado or two cannot be ruled out over the next few hours. DISCUSSION...Multiple transient supercells, embedded within the broader rainbands associated with Hurricane Francine, have percolated in intensity and organization over the past few hours across southeast LA and adjacent areas offshore. However, a widespread and persistent rain-shield has limited diurnal heating, with surface temperatures barely exceeding the mid 70s F amid mid 70s F dewpoints. The resultant thermodynamic profiles yields scant buoyancy inland, with MLCAPE limited to 500 J/kg (perhaps less in spots), which is likely tempering tornado potential. Nonetheless, HDC VAD profiler trends show hodographs increasing in size and curvature as vertical wind fields increase in intensity with the approach of Francine's center. As such, a couple of brief tornadoes cannot be ruled out where any longer-lived, sustained supercell structure can traverse a favorable overlapping buoyancy/shear parameter space. ..Squitieri.. 09/11/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LIX...LCH... LAT...LON 29119144 29559204 29919209 30189163 30359087 30478862 30478846 30418846 30238859 29928872 29308895 28968928 28908966 28909051 29119144 Read more

MD 2054 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR PORTIONS OF SOUTHERN IDAHO INTO SOUTHWESTERN MONTANA
Mesoscale Discussion 2054 NWS Storm Prediction Center Norman OK 0326 PM CDT Wed Sep 11 2024 Areas affected...Portions of southern Idaho into southwestern Montana Concerning...Severe potential...Watch unlikely Valid 112026Z - 112300Z Probability of Watch Issuance...5 percent SUMMARY...Thunderstorms are expected to increase in coverage and intensity through the afternoon posing a risk of severe hail and wind. The severe threat is expected to be too isolated and marginal to warrant a severe thunderstorm watch. DISCUSSION...A potent shortwave trough evident in water vapor imagery this afternoon is nosing into southwestern Idaho. As a result of the corresponding focused ascent, thunderstorms will continue to increase in coverage and intensity across the area through the afternoon and evening hours. Despite strong forcing for ascent and sufficient shear for supercells and organized storm modes, the moisture and instability are rather modest. Consequently, storms will be relatively high based, which will favor strong evaporative cooling and isolated severe gusts through the evening hours. Additionally, strong outflow winds from these thunderstorms will likely impact existing fires across the region, which may hinder fire suppression/containment efforts. ..Jirak/Guyer.. 09/11/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TFX...PIH...MSO...BOI...LKN... LAT...LON 43431733 44231670 45571521 46281430 46781351 46841240 46421176 45791135 44651137 43871199 43161318 42471464 42131610 41951702 42401729 43431733 Read more

MD 2055 CONCERNING SEVERE POTENTIAL...TORNADO WATCH LIKELY FOR PORTIONS OF SOUTHERN ALABAMA INTO THE WESTERN FLORIDA PANHANDLE
Mesoscale Discussion 2055 NWS Storm Prediction Center Norman OK 0340 PM CDT Wed Sep 11 2024 Areas affected...portions of southern Alabama into the western Florida Panhandle Concerning...Severe potential...Tornado Watch likely Valid 112040Z - 120015Z Probability of Watch Issuance...80 percent SUMMARY...The tropical-cyclone tornado threat should gradually increase through the remainder of the afternoon. A Tornado Watch will eventually be needed. DISCUSSION...The center of Hurricane Francine continues to translate northeast as it approaches the LA coastline. Extending east-northeast of Francine's center is a zonal rainband, comprised of relatively discrete cells (some possibly transient supercellular). At the moment, these storms are percolating in intensity offshore, where a greater theta-e/buoyant airmass resides. However, this airmass is expected to gradually advect northward/inland with the north-northeastward progression of Francine through the afternoon and evening hours. HDC and MOB VADs show increasing hodograph sizes/curvature, indicating stronger low-level shear become established along the Gulf Coast. As such, a corresponding tornado threat should increase with the more favorable low-level warm-air/moisture advection. A Tornado Watch will eventually be needed. ..Squitieri/Guyer.. 09/11/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TAE...MOB...LIX... LAT...LON 29628497 29838549 30238646 30308736 30318792 30548839 31038848 31448845 31688811 31648734 31368622 31168580 30778518 30238464 29978456 29808453 29628497 Read more

WW 0667 Status Updates
STATUS REPORT ON WW 667 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..SQUITIERI..09/11/24 ATTN...WFO...LIX...LCH...MOB... STATUS REPORT FOR WT 667 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS LAC005-007-045-047-051-057-063-071-075-087-089-093-095-099-101- 103-105-109-117-112140- LA . LOUISIANA PARISHES INCLUDED ARE ASCENSION ASSUMPTION IBERIA IBERVILLE JEFFERSON LAFOURCHE LIVINGSTON ORLEANS PLAQUEMINES ST. BERNARD ST. CHARLES ST. JAMES ST. JOHN THE BAPTIST ST. MARTIN ST. MARY ST. TAMMANY TANGIPAHOA TERREBONNE WASHINGTON MSC045-047-059-109-112140- MS . MISSISSIPPI COUNTIES INCLUDED ARE HANCOCK HARRISON JACKSON PEARL RIVER GMZ435-436-455-530-532-534-536-538-550-552-555-557-570-572-575- 577-632-650-670-112140- Read more

WW 667 TORNADO LA MS CW 111740Z - 120400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 667 NWS Storm Prediction Center Norman OK 1240 PM CDT Wed Sep 11 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southern Louisiana Far Southern Mississippi Coastal Waters * Effective this Wednesday afternoon and evening from 1240 PM until 1100 PM CDT. * Primary threats include... Several tornadoes likely SUMMARY...Hurricane Francine will continue to approach the southern Louisiana coast and move inland as it progresses northeastward across the region through tonight. The potential for tornadoes is expected to increase through the afternoon and early evening. The tornado watch area is approximately along and 70 statute miles north and south of a line from 60 miles west southwest of Houma LA to 40 miles east southeast of Gulfport MS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 16045. ...Guyer Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0343 PM CDT Wed Sep 11 2024 Valid 131200Z - 191200Z Fire weather concerns are generally expected to be on a downward trend during the extended period. Upper-level troughs will be impact portions of the West. Precipitation associated with these troughs should moderate fuels from the Great Basin into the Northwest and northern Rockies. Localized concerns are possible, but overall critical fire weather potential is low and uncertain. ...Portions of southern Great Lakes Region... With the upper-ridge building into the Great Lakes late this week, the expectation is for hot/dry conditions to continue. The remnant circulation of TC Francine is also forecast to move into the mid-Mississippi Valley during the same time frame. Some increase in surface winds is possible as this occurs. Given drying fuels, some fire weather concerns could develop where RH can fall low enough coincident with stronger surface winds. It is uncertain where this overlap will occur, if at all. No highlights will be added. ...Great Basin... Some areas of dry and breezy conditions appear possible as upper troughs swing through the region. However, precipitation is also expected. While local fire weather concerns are possible next week, the overall fire environment is expected to moderate and critical fire weather potential is low. ..Wendt.. 09/11/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0343 PM CDT Wed Sep 11 2024 Valid 131200Z - 191200Z Fire weather concerns are generally expected to be on a downward trend during the extended period. Upper-level troughs will be impact portions of the West. Precipitation associated with these troughs should moderate fuels from the Great Basin into the Northwest and northern Rockies. Localized concerns are possible, but overall critical fire weather potential is low and uncertain. ...Portions of southern Great Lakes Region... With the upper-ridge building into the Great Lakes late this week, the expectation is for hot/dry conditions to continue. The remnant circulation of TC Francine is also forecast to move into the mid-Mississippi Valley during the same time frame. Some increase in surface winds is possible as this occurs. Given drying fuels, some fire weather concerns could develop where RH can fall low enough coincident with stronger surface winds. It is uncertain where this overlap will occur, if at all. No highlights will be added. ...Great Basin... Some areas of dry and breezy conditions appear possible as upper troughs swing through the region. However, precipitation is also expected. While local fire weather concerns are possible next week, the overall fire environment is expected to moderate and critical fire weather potential is low. ..Wendt.. 09/11/2024 ...Please see www.spc.noaa.gov/fire for graphic product... Read more