SPC Feb 11, 2025 0600 UTC Day 1 Convective Outlook

3 months 1 week ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1131 PM CST Mon Feb 10 2025 Valid 111200Z - 121200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorms are possible from the southern Plains into the lower Mississippi Valley. Severe weather is not currently anticipated. ...Southern Plains to lower Mississippi Valley... Substantial large-scale height falls are forecast across much of the Rockies/Plains region during the day1 period as upper troughing becomes established from MT into northern Mexico. Within this larger-scale trough, several embedded short waves will eject across northern Mexico into the southern Plains/lower MS Valley region. Even so, surface response will not be particularly impressive as surface ridging currently dominates the Plains with the leading edge of this air mass (cold front) extending across the TX Coastal Plain. Latest model guidance suggests this air mass will be reluctant to lift north until very late in the period, and modified Gulf air may not spread inland until later in the day2 period. For these reasons it appears low-level warm advection will be the primary instigator in convective development through the period. Forecast soundings exhibit very steep mid-level lapse rates atop the cooler boundary layer, and this should prove beneficial for elevated thunderstorm development ahead of each ejecting short-wave trough, modulated by the LLJ influence. Given the steep lapse rates, and strong effective shear, some updraft organization may occur. While the strongest organized storms may produce hail, at this time it's not entirely clear adequate instability will exist for severe hail, thus probabilities will not be introduced at this time. ..Darrow/Weinman.. 02/11/2025 Read more

SPC Feb 11, 2025 0100 UTC Day 1 Convective Outlook

3 months 1 week ago
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0653 PM CST Mon Feb 10 2025 Valid 110100Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected tonight. ...01z Update... 850mb flow is beginning to increase across northern TX into southeast OK, partially in response to a weak southern stream short-wave trough that is approaching this region. Latest model guidance suggests LLJ will strengthen into the late evening hours then veer into the Arklatex by 11/12z. The strongest corridor of low-level warm advection is currently noted from central OK into the Ozarks. This appears to be the primary reason for ongoing elevated convection, with scattered updrafts penetrating levels that are favorable for lightning. 00z sounding from OUN supports this with 450 J/kg MUCAPE if lifting a parcel around 2km AGL. With time, as temperatures cool aloft, lapse rates should adjust and permit convection to develop southwest across north-central TX into the Edwards Plateau. Buoyancy appears inadequate for severe hail. ..Darrow.. 02/11/2025 Read more

SPC Day 3-8 Fire Weather Outlook

3 months 1 week ago
SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0222 PM CST Mon Feb 10 2025 Valid 121200Z - 181200Z A progressive upper pattern is in store for the upcoming week into next weekend, with multiple surface cyclones poised to develop over the Plains states and eject eastward in tandem with supporting mid-level troughs. Surface cyclone development is expected in the southern Plains with the approach of the first mid-level trough, supporting dry downslope flow across far western Texas Day 3 (Wednesday). 25 mph sustained westerly surface winds and 15 percent RH will overspread drying fuels over the Trans Pecos region, necessitating the maintenance of 70 percent Critical probabilities. The passage of another mid-level trough, surface low, and accompanying downslope flow, is likely on Day 6 (Saturday), where dry and windy conditions across far western Texas warrants 40 percent Critical probabilities. Some precipitation accumulations are possible just east of the Trans Pecos on Wednesday, which may influence the eastern extent of fire weather highlights for both Days 3 and 6 in future outlooks. After Saturday, relatively quiescent fire weather conditions are likely before another mid-level trough approaches beyond the extended outlook time frame. ..Squitieri.. 02/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 10, 2025 2000 UTC Day 1 Convective Outlook

3 months 1 week ago
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0157 PM CST Mon Feb 10 2025 Valid 102000Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected through tonight. ...20z Update... The previous forecast remains largely unchanged with minor adjustments. Broad-scale ascent/warm air advection is increasing across portions of the southern Plains, with elevated showers ongoing within a weakly unstable air mass. Gradual intensification of these showers into widely scattered thunderstorms is likely over the southern Plains and ArkLaTex tonight. The thunder area was expanded slightly farther east to better cover higher thunder potential from recent guidance. Otherwise, the severe risk remains low. See the prior outlook for additional info. ..Lyons.. 02/10/2025 .PREV DISCUSSION... /ISSUED 1019 AM CST Mon Feb 10 2025/ ...Central/North Texas and eastern Oklahoma/western Arkansas... Broadly cyclonic flow aloft will continue over the CONUS with gradual trough amplification over the northern Intermountain West, Great Basin and Lower Colorado River Valley. Focused by increasing warm advection and isentropic ascent within the elevated frontal zone, thunderstorms may develop as early as this afternoon across south-central/eastern Oklahoma into western Arkansas, and then more broadly late tonight in a northeast-southwest corridor across North/central Texas toward the Edwards Plateau. While vertical shear will be strong within the cloud-bearing layer, seasonally mild mid-level temperatures and residual subsidence-related capping in the mid-levels will likely preclude meaningful hail potential with this elevated convection. Read more

SPC Day 2 Fire Weather Outlook

3 months 1 week ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0126 PM CST Mon Feb 10 2025 Valid 111200Z - 121200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHWESTERN NEW MEXICO... The previous forecast remains on track, with only minor changes made to ongoing fire weather highlights to reflect the latest guidance consensus. ..Squitieri.. 02/10/2025 .PREV DISCUSSION... /ISSUED 0200 AM CST Mon Feb 10 2025/ ...Synopsis... A substantial midlevel trough, accompanied by strengthening westerly flow aloft, will cross the Lower CO River Valley during the day. At the same time, a related surface low will deepen over the Four Corners before drifting southeastward across NM. South of the surface low, a tightening pressure gradient will support 20-25 mph sustained west-southwesterly surface winds amid 15-20 percent RH across southeast AZ, southern/central NM, and the TX Trans-Pecos. The best overlap of strong/gusty surface winds and low RH is expected over portions of southwestern NM during the afternoon, and given increasingly dry fuels, critical fire-weather conditions are expected here. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 10, 2025 1930 UTC Day 3 Severe Thunderstorm Outlook

3 months 1 week ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0121 PM CST Mon Feb 10 2025 Valid 121200Z - 131200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM PARTS OF EASTERN LOUISIANA INTO CENTRAL/SOUTHERN MISSISSIPPI AND FAR WESTERN ALABAMA... ...SUMMARY... Severe storms will be possible Wednesday afternoon into Wednesday night from the Sabine Valley vicinity into far western Georgia. ...Lower MS Valley/Central Gulf Coast States... A large-scale upper trough will be located over the Plains/central U.S. Wednesday. A shortwave embedded within the larger-scale trough will rotated from the Plains to the Midwest/Great Lakes, resulting in a large swath of strong deep-layer southwesterly flow across the region. At the surface, low pressure will develop near the Sabine River during the morning, and deepen as the low lifts northeast through the period. Southerly low-level flow will maintain 60s F dewpoints across the Lower MS Valley and Gulf Coast states ahead of southeastward-advancing cold front. While widespread cloud cover and ongoing precipitation will limit stronger destabilization, and adds to uncertainty for this event, the overall large-scale pattern suggests some severe thunderstorm potential is likely from extreme southeast TX into MS/AL Wednesday afternoon into the overnight hours. Mid to upper 60s F dewpoints will approach the I-20 corridor by afternoon as the surface low develop northeast into TN/KY by 00z. Additionally, strong shear will overspread the region for much of the period (decreasing from west to east with time). Large-scale ascent will be somewhat offset to the north of the better low-level moisture, but a glancing influence coupled with the sharpening of the southeast-advancing cold front will be sufficient to sustain convection in a strong warm advection regime. Forecast soundings indicate enlarged low-level hodographs becoming elongated above 2-3 km, typical of supercell/QLCS environments and aided by a 45-60 kt low-level jet. However, low-level lapse rates are expected to remain poor given limited heating, and midlevel lapse rates also are expected to remain modest. MUCAPE around 500-1000 J/kg is evident in most forecast guidance, though surface-based instability is likely to remain muted. With shear vectors oriented parallel to the surface boundary, convection is likely to mostly be to the cool side of the boundary. However, given strength of shear and modest instability, some strong/severe wind potential is possible with organized line segments. While low-level lapse rates and instability are expected to remain poor, limiting overall tornado potential, a couple of mesovortex spin-ups within linear convection may still be possible given very favorable shear environment and any mesoscale pockets of greater instability. Currently, it is uncertain if convection will be able to develop ahead of the cold front in the open warm sector. Given the somewhat northward offset of stronger ascent and orientation of shear vectors to the initiating boundary, it appears low probability at this time that convection will be able to sufficiently deepen within the pre-frontal warm advection regime. However, if this occurs, a conditional risk for severe gusts and a couple of tornadoes with supercells will exist. The severe risk should gradually lessen overnight with north and east extent as instability decreases and large-scale ascent continues to lift to the northeast of the region. ..Leitman.. 02/10/2025 Read more

SPC Feb 10, 2025 1730 UTC Day 2 Convective Outlook

3 months 1 week ago
SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1109 AM CST Mon Feb 10 2025 Valid 111200Z - 121200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorms are possible from the southern Plains into the lower Mississippi Valley on Tuesday. Severe weather is not currently anticipated. ...Southern Plains to Lower MS Valley... A large-scale upper trough will migrate across the western U.S. on Tuesday, becoming oriented over the High Plains and northern Mexico by early Wednesday. Enhanced southwesterly flow ahead of this feature will overspread the southern Plains to the Lower MS, TN and OH Valleys. During the day, several shortwave impulses will migrate through southwesterly flow from the southern Plains to the Mid-South, while stronger large-scale ascent tied to the main upper trough will emerge over OK/TX to the ArkLaTex early Wednesday. Forecast guidance continues to vary with position/evolution of a surface boundary located over the TX/LA coastal plain during the morning. The ECMWF continues to be somewhat of an outlier, maintaining a more northward position of this boundary compared to other guidance. This does introduce some uncertainty with regards to severe potential. However, the current expectation is that even if a more northerly surface boundary position occurs, several other factors will act to limit severe thunderstorm probabilities. While warm advection through the period will result in scattered thunderstorms from Tuesday morning into Wednesday morning from the southern Plains to the Lower MS Valley, large-scale ascent will be focused somewhat to the north of better low-level moisture near the Coastal Plain. Additionally, convection will largely remain to the cool side of the boundary given boundary-parallel deep-layer flow and a lack of stronger surface cyclogenesis. This should limit convective potential ahead of the front in the open warm sector. Forecast soundings also indicate warm layers aloft, and overall modest lapse rates, resulting in mostly weak elevated instability unfavorable for stronger updrafts despite moderate to strong vertical shear. Overnight, as stronger large-scale ascent moves into the southern Plains with the main upper trough, additional elevated thunderstorms are likely to develop across parts of central TX eastward toward the Sabine Valley. Cooling aloft will aid in steeper midlevel lapse rates and increasing MUCAPE. This activity may conditionally pose a risk for hail to near 1 inch diameter in the last 3-6 hours of the forecast period. Overall potential appears too limited/uncertain to include a Marginal risk at this time. ..Leitman.. 02/10/2025 Read more

SPC Day 1 Fire Weather Outlook

3 months 1 week ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1039 AM CST Mon Feb 10 2025 Valid 101700Z - 111200Z The previous forecast (see below) remains on track. ..Squitieri.. 02/10/2025 .PREV DISCUSSION... /ISSUED 0159 AM CST Mon Feb 10 2025/ ...Synopsis... Within the base of a large-scale trough over the West, an embedded shortwave trough will track eastward across the Southwest. This will encourage a broad area of surface low pressure over the southern Rockies and High Plains. Along/south of the surface low, a modest pressure gradient, coupled with boundary-layer mixing into a belt of strong flow aloft, will favor 15-20 mph sustained west-southwesterly surface winds (with higher gusts) across portions of NM. While mid/high-level clouds will limit diurnal heating and RH reductions to an extent, dry antecedent conditions and at least filtered heating should still yield 15-25 percent minimum RH. As a result, elevated fire-weather conditions are expected. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 10, 2025 1630 UTC Day 1 Convective Outlook

3 months 1 week ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1019 AM CST Mon Feb 10 2025 Valid 101630Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected through tonight. ...Central/North Texas and eastern Oklahoma/western Arkansas... Broadly cyclonic flow aloft will continue over the CONUS with gradual trough amplification over the northern Intermountain West, Great Basin and Lower Colorado River Valley. Focused by increasing warm advection and isentropic ascent within the elevated frontal zone, thunderstorms may develop as early as this afternoon across south-central/eastern Oklahoma into western Arkansas, and then more broadly late tonight in a northeast-southwest corridor across North/central Texas toward the Edwards Plateau. While vertical shear will be strong within the cloud-bearing layer, seasonally mild mid-level temperatures and residual subsidence-related capping in the mid-levels will likely preclude meaningful hail potential with this elevated convection. ..Guyer/Moore.. 02/10/2025 Read more

SPC Feb 10, 2025 1300 UTC Day 1 Convective Outlook

3 months 1 week ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0645 AM CST Mon Feb 10 2025 Valid 101300Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from central Texas across southeast Oklahoma into western Arkansas tonight. ...TX/OK/AR... Recent satellite imagery shows a well-defined shortwave trough off the southern CA/Baja CA coast. This feature is forecast to progress quickly east-northeastward throughout the day, traversing the Southwest/northern Mexico and reaching the southern Plains by tomorrow morning. Airmass ahead of this feature across the southern Plains is currently cool and dry, with the moist airmass still offshore. Mass response ahead of the approaching shortwave will lead to some modest airmass modification, with upper 50s/low 60s surface dewpoints potentially reaching the TX Hill Country/central TX by tomorrow morning. Even with these moistening low levels, warm mid-level temperatures will preclude buoyancy and deep convection across much of the TX Coastal Plain. Greater thunderstorm potential is anticipated farther north in corridor from the Edwards Plateau into southeast OK and western AR about 200 mi northwest of the primary synoptic boundary. Here, aforementioned mass response and associated strengthening of the low-level southwesterly flow will lead to moderate to strong low-level warm-air advection and the development of modest elevated buoyancy (generally above 800-750 mb). Isolated thunderstorms will be possible as early as this afternoon across southeastern OK and western AR. Persistent warm-air advection will likely contribute to a continued potential for isolated thunderstorms across this region throughout the evening. This persistent warm-air advection will also help support the development of modest buoyancy into TX as mid-level temperatures cool ahead of the approaching shortwave. Resulting buoyancy combined with increasing large-scale ascent should result in addition isolated thunderstorm development from north TX into the Edwards Plateau, largely after 06Z. Limited buoyancy should keep the severe potential low throughout the period. ..Mosier/Broyles.. 02/10/2025 Read more

SPC Feb 10, 2025 Day 4-8 Severe Weather Outlook

3 months 1 week ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0337 AM CST Mon Feb 10 2025 Valid 131200Z - 181200Z ...DISCUSSION... There appears to be severe potential along parts of the East Coast as the initial trough moves offshore on Thursday. In advance of the next trough, initial moisture return into the lower Mississippi Valley region could promote some severe potential late Friday. Uncertainty in the environment/forcing precludes highlights both days. Severe weather potential increases further on Saturday in the Southeast and may linger into Sunday along the East Coast. For Monday, broad surface high pressure and cold air east of the Divide will minimize severe risk. ...Southeast... There has been a consistent signal for a potent upper-level trough to move into the West Coast on Friday. In response to this trough, a deep surface low is expected to develop in eastern Colorado and move into Oklahoma. These features will promote strong moisture return into parts of the central Gulf Coast states late Friday into Saturday. Appreciable moisture return may reach into the Mid-South. This setup would favor scattered to numerous severe storms from the Sabine Valley vicinity into much of Mississippi/Alabama. Both low-level and deep-layer shear would be strong in this regime. The surging cold front will likely be the primary focus for storms, but the strong synoptic forcing within a potentially weakly capped boundary-layer could also bring about more discrete storms ahead of the line as well. The primary uncertainties will be the timing/amplitude of the trough as well northward/eastward extent of sufficient buoyancy. With the consistent signal in deterministic and ML guidance, 15% severe probabilities appear warranted for Saturday. Refinement of the highlighted area is probable as additional data becomes available. ...Carolinas into Mid-Atlantic... As the strong trough, surface low, and cold front continue east on Sunday, there will be some potential for additional severe storms from the Mid-Atlantic in to portions of the Carolinas. It is not clear if the timing of these features will be well phased with the diurnal cycle. Trends in guidance will continue to be monitored. Read more

SPC Feb 10, 2025 0830 UTC Day 3 Severe Thunderstorm Outlook

3 months 1 week ago
SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0204 AM CST Mon Feb 10 2025 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE SABINE VALLEY INTO FAR WESTERN ALABAMA... ...SUMMARY... A few severe storms will be possible Wednesday afternoon into Wednesday night from the Sabine Valley vicinity into far western Alabama. ...Synopsis... As the shortwave trough near the ArkLaTex moves northeastward through the day on Wednesday, moisture return from the Gulf will continue ahead of a cold front that will move through the Lower Mississippi Valley and parts of the Southeast Wednesday evening/overnight. ...Sabine Valley into far western Alabama... Precipitation, likely north of the surface boundary, will be ongoing Wednesday morning. This will have impact on both frontal position and the exact degree of destabilization that can occur later in the day. As the trough moves northeast, low to mid 60s F dewpoints will move northward into much of Louisiana into central Mississippi and portions of Alabama. Upper 60s F dewpoints are possible near the Gulf Coast. As a surface low develops near the ArkLaTex late in the morning, storm development in the warm sector is possible near the Sabine Valley. Storms are expected to be at least near surface based. Storm development along the front is likely to continue through the period given strong low-level warm advection. This activity may occasionally be strong to severe given the 50-60 kts of effective shear. However, front-parallel shear will lead to storm interactions and little surge in the line. The front will eventually move southeastward, but this will not occur until the evening and overnight periods. Buoyancy will decrease with northward and eastward extent, but stronger forcing from the shortwave may compensate. Moisture advection should keep inhibition minimal even into the evening. The strong low-level winds and enlarged hodographs would suggest some threat of damaging winds as well as a tornado or two. The linear forcing from the front should limit the tornado threat. Development of storms in the open warm sector does not appear probable given the warmer layers aloft and the arrival of mid-level cooling during th early/mid evening. ..Wendt.. 02/10/2025 Read more

SPC Feb 10, 2025 0830 UTC Day 3 Severe Thunderstorm Outlook

3 months 1 week ago
SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0204 AM CST Mon Feb 10 2025 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE SABINE VALLEY INTO FAR WESTERN ALABAMA... ...SUMMARY... A few severe storms will be possible Wednesday afternoon into Wednesday night from the Sabine Valley vicinity into far western Alabama. ...Synopsis... As the shortwave trough near the ArkLaTex moves northeastward through the day on Wednesday, moisture return from the Gulf will continue ahead of a cold front that will move through the Lower Mississippi Valley and parts of the Southeast Wednesday evening/overnight. ...Sabine Valley into far western Alabama... Precipitation, likely north of the surface boundary, will be ongoing Wednesday morning. This will have impact on both frontal position and the exact degree of destabilization that can occur later in the day. As the trough moves northeast, low to mid 60s F dewpoints will move northward into much of Louisiana into central Mississippi and portions of Alabama. Upper 60s F dewpoints are possible near the Gulf Coast. As a surface low develops near the ArkLaTex late in the morning, storm development in the warm sector is possible near the Sabine Valley. Storms are expected to be at least near surface based. Storm development along the front is likely to continue through the period given strong low-level warm advection. This activity may occasionally be strong to severe given the 50-60 kts of effective shear. However, front-parallel shear will lead to storm interactions and little surge in the line. The front will eventually move southeastward, but this will not occur until the evening and overnight periods. Buoyancy will decrease with northward and eastward extent, but stronger forcing from the shortwave may compensate. Moisture advection should keep inhibition minimal even into the evening. The strong low-level winds and enlarged hodographs would suggest some threat of damaging winds as well as a tornado or two. The linear forcing from the front should limit the tornado threat. Development of storms in the open warm sector does not appear probable given the warmer layers aloft and the arrival of mid-level cooling during th early/mid evening. ..Wendt.. 02/10/2025 Read more

SPC Day 2 Fire Weather Outlook

3 months 1 week ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0200 AM CST Mon Feb 10 2025 Valid 111200Z - 121200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHWESTERN NEW MEXICO... ...Synopsis... A substantial midlevel trough, accompanied by strengthening westerly flow aloft, will cross the Lower CO River Valley during the day. At the same time, a related surface low will deepen over the Four Corners before drifting southeastward across NM. South of the surface low, a tightening pressure gradient will support 20-25 mph sustained west-southwesterly surface winds amid 15-20 percent RH across southeast AZ, southern/central NM, and the TX Trans-Pecos. The best overlap of strong/gusty surface winds and low RH is expected over portions of southwestern NM during the afternoon, and given increasingly dry fuels, critical fire-weather conditions are expected here. ..Weinman.. 02/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 2 Fire Weather Outlook

3 months 1 week ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0200 AM CST Mon Feb 10 2025 Valid 111200Z - 121200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SOUTHWESTERN NEW MEXICO... ...Synopsis... A substantial midlevel trough, accompanied by strengthening westerly flow aloft, will cross the Lower CO River Valley during the day. At the same time, a related surface low will deepen over the Four Corners before drifting southeastward across NM. South of the surface low, a tightening pressure gradient will support 20-25 mph sustained west-southwesterly surface winds amid 15-20 percent RH across southeast AZ, southern/central NM, and the TX Trans-Pecos. The best overlap of strong/gusty surface winds and low RH is expected over portions of southwestern NM during the afternoon, and given increasingly dry fuels, critical fire-weather conditions are expected here. ..Weinman.. 02/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

3 months 1 week ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CST Mon Feb 10 2025 Valid 101200Z - 111200Z ...Synopsis... Within the base of a large-scale trough over the West, an embedded shortwave trough will track eastward across the Southwest. This will encourage a broad area of surface low pressure over the southern Rockies and High Plains. Along/south of the surface low, a modest pressure gradient, coupled with boundary-layer mixing into a belt of strong flow aloft, will favor 15-20 mph sustained west-southwesterly surface winds (with higher gusts) across portions of NM. While mid/high-level clouds will limit diurnal heating and RH reductions to an extent, dry antecedent conditions and at least filtered heating should still yield 15-25 percent minimum RH. As a result, elevated fire-weather conditions are expected. ..Weinman.. 02/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

3 months 1 week ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CST Mon Feb 10 2025 Valid 101200Z - 111200Z ...Synopsis... Within the base of a large-scale trough over the West, an embedded shortwave trough will track eastward across the Southwest. This will encourage a broad area of surface low pressure over the southern Rockies and High Plains. Along/south of the surface low, a modest pressure gradient, coupled with boundary-layer mixing into a belt of strong flow aloft, will favor 15-20 mph sustained west-southwesterly surface winds (with higher gusts) across portions of NM. While mid/high-level clouds will limit diurnal heating and RH reductions to an extent, dry antecedent conditions and at least filtered heating should still yield 15-25 percent minimum RH. As a result, elevated fire-weather conditions are expected. ..Weinman.. 02/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 10, 2025 0700 UTC Day 2 Convective Outlook

3 months 1 week ago
SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1228 AM CST Mon Feb 10 2025 Valid 111200Z - 121200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorms are possible from the southern Plains into the lower Mississippi Valley on Tuesday. Severe weather is not currently anticipated. ...Synopsis... Broad upper-level troughing is expected to evolve over much of the West on Tuesday. A shortwave perturbation is expected to eject into the southern Plains late Tuesday into Wednesday morning. At the surface, a cold front should extend from the southern High Plains into central Texas before arcing northeastward along the upper Texas Gulf Coast and into the lower Mississippi Valley. ...Southern Plains to Lower Mississippi Valley... Precipitation is likely to be ongoing early Tuesday morning. Most of this activity will be occurring on the cool side of the boundary. This should reinforce the front, though some modest northward progression of warmer, moist air may occur within the coastal plain regions. Potential for surface-based storms south of the boundary in southeast Texas/Sabine Valley vicinity appears low as the low-level jet will weaken during the morning/afternoon and mid-level ascent will be weak. Furthermore, forecast soundings indicate poor lapse rates in the column and warm layers that will inhibit updraft intensity. Overnight Tuesday into Wednesday morning, additional isolated to scattered storms are possible from the Edwards Plateau into Central/Northeast Texas as mid-level forcing and 850 mb warm advection increases. Again, these storms will be elevated on the cool side of the boundary. The strongest of these storms could produce small hail. The overall severe threat appears too isolated/uncertain for unconditional probabilities. ..Wendt.. 02/10/2025 Read more
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