SPC Feb 4, 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 0110 PM CST Tue Feb 04 2025 Valid 061200Z - 071200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe weather is not expected across the U.S. on Thursday. ...Synopsis and Discussion... A low-amplitude wave will quickly move out of the upper OH Valley and weaken as it moves into the Northeast. Behind this feature, a strong shortwave trough will move eastward across the Great Lakes. To the west, a trough will drop south toward CA then move across the Great Basin and into the central Rockies by Saturday morning. At the surface, high pressure will remain over the Southeast, but a low-level moist plume will remain ahead of a cold front from KY into WV. Western parts of this front will stall as low pressure quickly moves from OH across southern New England. Rain and primarily elevated thunderstorms are expected from the OH valley eastward toward the Mid Atlantic, as westerly flow brings midlevel moisture eastward. However, drying will occur rapidly behind the shortwave trough. ..Jewell.. 02/04/2025 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 0103 PM CST Tue Feb 04 2025 Valid 051200Z - 061200Z Elevated fire weather concerns remain likely across the Southwest and southern High Plains tomorrow. The primary forecast amendment for this update was to introduce an Elevated risk area across east-central AZ into western NM. Recent guidance has trended towards drier/windier conditions along and north of the Mogollon Rim and within the Gila region of southwest NM. Sustained winds within, and in the lee of, the higher terrain should peak between 15-25 mph by late afternoon as stronger mid-level winds mix to the surface. Ample heating/mixing should promote RH reductions into the teens to upper single digits. Increasing winds with falling RH, coupled with antecedent drought conditions, should sufficiently dry finer fuels to support a fire weather concern. Only minor modifications were made to the existing Elevated risk area across the southern High Plains - mainly to account for the potential for strong winds and dry downslope conditions northward across central CO in the lee of the Rockies. Consideration was given for introducing a Critical risk area across east-central/northeast NM where winds should be sustained near 25-30 mph in closer proximity to the deepening surface low. However, spread in guidance regarding the coverage of such winds, and uncertainty regarding fuel status with northward extent, precluded additional highlights for this update. ..Moore.. 02/04/2025 .PREV DISCUSSION... /ISSUED 0201 AM CST Tue Feb 04 2025/ ...Synopsis... Enhanced mid-level flow over the Western US is forecast to shift eastward as a shortwave trough spills over the Rockies and into the Plains Wednesday. As the upper trough approaches, a lee low should deepen over eastern CO, supporting stronger west/southwesterly winds over much of the High Plains. Continued dry conditions and the increase in winds favors some potential for elevated fire-weather concerns. ...Southern High Plains... As the shortwave trough and stronger mid-level flow cross the central Rockies, a lee low should intensify over eastern CO. Behind the surface low, west/southwesterly downslope flow, aided by fairly strong mid-level flow, is expected across much of the southern High Plains. Gusty surface winds of 15-25 mph and higher gusts are possible across parts of eastern NM and western TX. Dry conditions are also expected, with RH reductions falling to near/below 20% likely from dry continental trajectories and warm temperatures. Elevated fire-weather conditions appear likely for a few hours over parts of eastern NM and West TX where several days of drying have resulted in more receptive fuels. Some localized critical conditions are also possible, mainly over eastern NM, where larger drier and more dense fuels loads could intersect with the stronger gusts and lower RH. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 4, 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 1134 AM CST Tue Feb 04 2025 Valid 051200Z - 061200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PORTIONS OF KENTUCKY AND TENNESSEE... ...SUMMARY... A conditional risk of a few strong or severe storms exists over parts of Kentucky and Tennessee late Wednesday. ...Synopsis... On Wednesday, an upper trough will be situated over the Pacific Northwest, with an early disturbance lifting into MT with height rises over OR. Otherwise, a westerly flow regime will exist across the rest of the CONUS, with various embedded waves. One such lead wave will move across the central Plains during the day, and will quickly move into the mid MS and lower OH valley during the evening and overnight. At the surface, high pressure will be strongest across the Great Lakes and Northeast, but another lobe of surface ridge will extend into the Southeast. Modest southerly low-level winds will maintain a moistening air mass from TX into the TN Valley, as a warm front lifts across TN and into KY. Overnight, a cold front associated with the midlevel wave will be near the OH River between 06-12Z, likely interacting with the moist plume. ...KY/TN/MS/AL... During the day, a few thunderstorms may develop within the deepening moist plume from northern MS/AL into Middle TN. This will occur with limited surface heating, and primarily in association with weak warm advection and moisture extending up through 700 mb. Midlevel lapse rates will not be very steep, and general thunderstorms appear most likely here. Overnight, as the midlevel wave and cold front approaches from the west, lift will interact with the low 60s F dewpoints and MLCAPE over 500 J/kg, with several thunderstorms possible. The main uncertainty for severe risk is regarding low-level lapse rates, however, shear will be strong with long hodographs and effective SRH possibly exceeding 400 m2/s2. As such, a conditional risk of a supercell or two will exist, including brief tornado risk as well as strong wind gusts. ..Jewell.. 02/04/2025 Read more

SPC Feb 4, 2025 1630 UTC Day 1 Convective Outlook

3 months 2 weeks ago
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1021 AM CST Tue Feb 04 2025 Valid 041630Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible across northern/central California this afternoon and evening. ...Northern/Central CA... Morning water vapor imagery shows a shortwave trough approaching the coast of northern CA. An associated surface cold front is also moving southeastward into northern CA, with an increasingly large shield of showers along/ahead of the front. Forecast soundings show the development of very weak CAPE later today, which could result in a few lightning flashes within the embedded precip shield. No severe storms are expected. ..Hart/Leitman.. 02/04/2025 Read more

SPC Day 1 Fire Weather Outlook

3 months 2 weeks ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0957 AM CST Tue Feb 04 2025 Valid 041700Z - 051200Z ...NO CRITICAL AREAS... The previous forecast remains on track with no changes needed. Latest guidance and morning observations continue to suggest that fire weather concerns will remain confined to portions of the Desert Southwest, but the coverage/duration of elevated conditions should remain patchy with limited overlap with receptive fuels. See the previous discussion for additional details. ..Moore.. 02/04/2025 .PREV DISCUSSION... /ISSUED 0159 AM CST Tue Feb 04 2025/ ...Synopsis... Ridging aloft is forecast to intensify over the central US, while a deepening trough moves over much of the West. Several embedded perturbations will cross the southern Rockies deepening a lee low over the southern High Plains and a second low over the Great Basin. This could support gusty winds and periods of locally elevated fire-weather potential over parts of central NM and eastern AZ. ...Southwest... A backdoor cold front will move south over the Plains and into eastern NM early this morning associated with a weak lee low. The influx of cooler air and more moisture should moderate RH over the High Plains. To the west over the High country of central NM, periodic gusty winds and low humidity are still expected to overlap for several hours. Some localized fire-weather risk is possible over central NM and eastern AZ. However, more widespread fire-weather concerns are not currently expected given the relatively minor overlap of sustained winds, low humidity and sporadic receptive fuels. ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 4, 2025 1300 UTC Day 1 Convective Outlook

3 months 2 weeks ago
SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0639 AM CST Tue Feb 04 2025 Valid 041300Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorm development will be possible across central California and along the Oregon Coast, but no severe thunderstorms are expected. ...Synopsis and Discussion... A mid/upper cyclone is currently centered off the Pacific Northwest/British Columbia coast, with moderate southwesterly flow aloft extending from the base of this low across much of the West Coast. A low-amplitude shortwave trough is currently moving through this southwesterly flow into central CA, with continued northeastward progression across the Great Basin expected today. Another shortwave trough is expected to follow quickly behind the first, moving into central CA tonight. Cooler mid-level temperatures will accompany this second shortwave, supporting the potential for a few lightning flashes as the frontal band moves ashore. Cooler temperatures aloft and increased forcing for ascent ahead of a third shortwave trough could also support isolated lightning flashes early tomorrow morning along the OR Coast. Farther east, upper ridging is expected to amplify as it shifts eastward across the Plains. At the same time, a fast-moving, low-amplitude shortwave trough will progress through southern Ontario and the Northeast. Additional southward progress of the cold front that currently extends from the Mid-Atlantic, TN Valley, Mid-South, and TX will be limited, with the portion of this front over TX potentially returning northward as a warm front Wednesday morning. Warm mid-level temperatures and associated poor lapse rates will limit buoyancy along this boundary, precluding any thunderstorm potential. ..Mosier/Bentley.. 02/04/2025 Read more

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

3 months 2 weeks ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0359 AM CST Tue Feb 04 2025 Valid 071200Z - 121200Z ...DISCUSSION... Medium-range models are in reasonably good agreement through day 6 (Sunday), in terms of large-scale features. Substantial divergence begins thereafter, casting substantial uncertainty into the forecast beyond the upcoming weekend. Day 4, as an upper short-wave trough crossing the Northeast moves into/across the Canadian Maritimes, the quasi-zonal flow pattern over the U.S. will continue. Weak amplification of the flow will occur over the West with time, however, as a short-wave trough moves across the Rockies. As this occurs, frontal low development is expected along the persistent west-to-east front lying from the southern Plains to the Mid-Atlantic region. However, with only weak instability expected near the developing low, and eastward along the front, convection is forecast to remain disorganized. Day 5, the upper wave is forecast to continue eastward across the central and northern Plains through the day, and into and across the Great Lakes region overnight. The associated frontal low -- initially progged to lie over the Oklahoma vicinity, will deepen as it shifts east-northeastward with time, reaching the northeast through the end of the period. The trailing surface front will sharpen and advance southeastward, extending from the Mid-Atlantic region southwestward to coastal Texas late. While showers and a few thunderstorms will be associated with the frontal advance, weak instability anticipated at this time should again hinder convective intensity. Day 6, as the low moves offshore and the front continues advancing steadily southeastward, it should clear the Atlantic and Gulf Coasts during the evening, lingering only across Florida through the end of the period. The continued trend of weak instability, as well as weakening flow with southward extent, should hinder prospects for more robust convection. Read more

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

3 months 2 weeks ago
Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0359 AM CST Tue Feb 04 2025 Valid 071200Z - 121200Z ...DISCUSSION... Medium-range models are in reasonably good agreement through day 6 (Sunday), in terms of large-scale features. Substantial divergence begins thereafter, casting substantial uncertainty into the forecast beyond the upcoming weekend. Day 4, as an upper short-wave trough crossing the Northeast moves into/across the Canadian Maritimes, the quasi-zonal flow pattern over the U.S. will continue. Weak amplification of the flow will occur over the West with time, however, as a short-wave trough moves across the Rockies. As this occurs, frontal low development is expected along the persistent west-to-east front lying from the southern Plains to the Mid-Atlantic region. However, with only weak instability expected near the developing low, and eastward along the front, convection is forecast to remain disorganized. Day 5, the upper wave is forecast to continue eastward across the central and northern Plains through the day, and into and across the Great Lakes region overnight. The associated frontal low -- initially progged to lie over the Oklahoma vicinity, will deepen as it shifts east-northeastward with time, reaching the northeast through the end of the period. The trailing surface front will sharpen and advance southeastward, extending from the Mid-Atlantic region southwestward to coastal Texas late. While showers and a few thunderstorms will be associated with the frontal advance, weak instability anticipated at this time should again hinder convective intensity. Day 6, as the low moves offshore and the front continues advancing steadily southeastward, it should clear the Atlantic and Gulf Coasts during the evening, lingering only across Florida through the end of the period. The continued trend of weak instability, as well as weakening flow with southward extent, should hinder prospects for more robust convection. Read more

SPC Feb 4, 2025 0830 UTC Day 3 Severe Thunderstorm Outlook

3 months 2 weeks ago
SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0233 AM CST Tue Feb 04 2025 Valid 061200Z - 071200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe weather is not expected across the U.S. on Thursday. ...Discussion... Largely zonal/westerly flow will continue across much of the U.S. once again Thursday, on the large scale. An embedded short-wave trough moving into/across the central Appalachians vicinity will continue moving quickly east-northeastward, moving across New England and into the Canadian Maritimes overnight. As this occurs, the surface frontal wave moving along the entrenched east-to-west baroclinic zone will move off the Mid-Atlantic Coast, deepening through the end of the period. Meanwhile, the trailing surface front will remain aligned roughly east-to-west, from the Mid-Atlantic region to the southern Plains. Showers and a few thunderstorms will likely be ongoing at the start of the period across the Mid-Atlantic region, but will move offshore through the day. Farther west, the next short-wave feature aloft, embedded in the westerlies, will move across the Desert Southwest/Four Corners states. Scattered showers will accompany the progression of this feature, while isolated showers and a few thunderstorms will also occur farther east, across the Tennessee Valley later in the period, in the broad zone of weak warm advection persisting across this region. In all areas, convection should remain weak/disorganized. ..Goss.. 02/04/2025 Read more

SPC Day 2 Fire Weather Outlook

3 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0201 AM CST Tue Feb 04 2025 Valid 051200Z - 061200Z ...Synopsis... Enhanced mid-level flow over the Western US is forecast to shift eastward as a shortwave trough spills over the Rockies and into the Plains Wednesday. As the upper trough approaches, a lee low should deepen over eastern CO, supporting stronger west/southwesterly winds over much of the High Plains. Continued dry conditions and the increase in winds favors some potential for elevated fire-weather concerns. ...Southern High Plains... As the shortwave trough and stronger mid-level flow cross the central Rockies, a lee low should intensify over eastern CO. Behind the surface low, west/southwesterly downslope flow, aided by fairly strong mid-level flow, is expected across much of the southern High Plains. Gusty surface winds of 15-25 mph and higher gusts are possible across parts of eastern NM and western TX. Dry conditions are also expected, with RH reductions falling to near/below 20% likely from dry continental trajectories and warm temperatures. Elevated fire-weather conditions appear likely for a few hours over parts of eastern NM and West TX where several days of drying have resulted in more receptive fuels. Some localized critical conditions are also possible, mainly over eastern NM, where larger drier and more dense fuels loads could intersect with the stronger gusts and lower RH. ..Lyons.. 02/04/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Day 1 Fire Weather Outlook

3 months 2 weeks ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0159 AM CST Tue Feb 04 2025 Valid 041200Z - 051200Z ...NO CRITICAL AREAS... ...Synopsis... Ridging aloft is forecast to intensify over the central US, while a deepening trough moves over much of the West. Several embedded perturbations will cross the southern Rockies deepening a lee low over the southern High Plains and a second low over the Great Basin. This could support gusty winds and periods of locally elevated fire-weather potential over parts of central NM and eastern AZ. ...Southwest... A backdoor cold front will move south over the Plains and into eastern NM early this morning associated with a weak lee low. The influx of cooler air and more moisture should moderate RH over the High Plains. To the west over the High country of central NM, periodic gusty winds and low humidity are still expected to overlap for several hours. Some localized fire-weather risk is possible over central NM and eastern AZ. However, more widespread fire-weather concerns are not currently expected given the relatively minor overlap of sustained winds, low humidity and sporadic receptive fuels. ..Lyons.. 02/04/2025 ...Please see www.spc.noaa.gov/fire for graphic product... Read more

SPC Feb 4, 2025 0700 UTC Day 2 Convective Outlook

3 months 2 weeks ago
SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 0108 AM CST Tue Feb 04 2025 Valid 051200Z - 061200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE MISSISSIPPI DELTA REGION NORTHEASTWARD ACROSS THE TENNESSEE VALLEY AREA... ...SUMMARY... A couple of strong to potentially severe storms may occur across portions of the Mid South Wednesday. ...Synopsis... Within a background low-amplitude upper flow field, an embedded short-wave trough is forecast to shift across the Plains and into/across the Midwest/Ohio Valley region with time. As this occurs, a weak surface frontal wave along the lingering west-to-east baroclinic zone is expected to shift from the Oklahoma area during the afternoon, across the Mid Mississippi and later the Ohio Valley region. Showers and thunderstorms are expected across the Mid South region and vicinity, in response, particularly during the latter half of the period. ...Tennessee/Kentucky and vicinity... Convection is forecast to gradually increase into the afternoon and evening hours across the Mid and Lower Mississippi/Tennessee Valleys, and eventually Ohio Valley, with a broad zone of warm advection/quasigeostrophic forcing for ascent ahead of the advancing mid-level wave. While weak lapse rates and only partially modified low-level air will exist across the warm sector, shear will be favorable across the region for updraft organization. The lack of more substantial CAPE is expected to largely temper severe-weather potential, but a few stronger storms are expected, mainly from mid afternoon mid evening. Any vigorous/sustained updraft which can evolve, will be capable of producing gusty winds -- perhaps reaching severe levels locally. A brief tornado or two could also occur, given shear sufficient for both low- and mid-level updraft rotation. ..Goss.. 02/04/2025 Read more

SPC Feb 4, 2025 0600 UTC Day 1 Convective Outlook

3 months 2 weeks ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1148 PM CST Mon Feb 03 2025 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorm development will be possible today in parts of the western U.S., but no severe storms are expected. ...DISCUSSION... At mid-levels, a ridge will move eastward across the central U.S. today, as a trough approaches the West Coast. Ahead of the trough, a few thunderstorms may develop in parts of north-central California from San Francisco eastward into the Sierra. Isolated lighting strikes may also occur along the Oregon coast. No severe threat is expected. ..Broyles/Lyons.. 02/04/2025 Read more

SPC Feb 4, 2025 0600 UTC Day 1 Convective Outlook

3 months 2 weeks ago
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1148 PM CST Mon Feb 03 2025 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorm development will be possible today in parts of the western U.S., but no severe storms are expected. ...DISCUSSION... At mid-levels, a ridge will move eastward across the central U.S. today, as a trough approaches the West Coast. Ahead of the trough, a few thunderstorms may develop in parts of north-central California from San Francisco eastward into the Sierra. Isolated lighting strikes may also occur along the Oregon coast. No severe threat is expected. ..Broyles/Lyons.. 02/04/2025 Read more

SPC Feb 4, 2025 0100 UTC Day 1 Convective Outlook

3 months 2 weeks ago
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0655 PM CST Mon Feb 03 2025 Valid 040100Z - 041200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast across the contiguous United States through tonight. ...DISCUSSION... West to west-northwest mid-level flow is in place across most of the U.S. At the surface, high pressure is dominating across much of the Southeast and Eastern Seaboard, with a cold front moving southward through the central states. This front will usher another high pressure system southward into the north-central U.S. As this front moves south, the dry air over much of the continental U.S. will be reinforced. The relatively dry air will make conditions unfavorable for thunderstorms through tonight. ..Broyles.. 02/04/2025 Read more

SPC Feb 3, 2025 2000 UTC Day 1 Convective Outlook

3 months 2 weeks ago
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0153 PM CST Mon Feb 03 2025 Valid 032000Z - 041200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast across the contiguous United States through tonight. ...20z Update... No changes are needed to the D1 Convective Outlook. See previous discussion below for more information. ..Thornton.. 02/03/2025 .PREV DISCUSSION... /ISSUED 1015 AM CST Mon Feb 03 2025/ Fast zonal flow is present today across the northern 2/3rds of the CONUS, with dry and stable conditions precluding organized thunderstorm activity throughout the period. A warm and moist air mass across south FL, coupled with strong daytime heating, will result in a few showers and perhaps a lightning flash. Strong onshore flow and cold mid-level temperatures could also result in a lightning flash along the coast of WA/OR. In both places, very weak thermodynamic parameters suggest the threat is below 10%. Read more

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

3 months 2 weeks ago
SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0126 PM CST Mon Feb 03 2025 Valid 051200Z - 061200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for severe thunderstorms appears negligible across the U.S., Wednesday through Wednesday night. ...Discussion... Although the northeastern Pacific blocking high may undergo some suppression during this period, models indicate that downstream mid-level troughing will be maintained near/offshore of the U.S. Pacific coast. However, it does appear that one substantive short wave perturbation emerging from this regime will continue inland across the northern Rockies, and suppress large-scale downstream ridging initially across the northern Great Plains into Great Lakes region. This is likely to be preceded by a less prominent perturbation (of southern mid-latitude Pacific origin), migrating across the central Great Plains through southern Great Lakes/Ohio Valley vicinity by 12Z Thursday, around the northern periphery of low-amplitude large-scale ridging in lower latitudes. Beneath this regime, seasonably cold air associated with an ongoing cold intrusion may still be entrenched as far south as portions of the central into southern Great Plains, middle Mississippi and Ohio Valleys and Mid Atlantic at the outset of the period, before undergoing further erosion from southwest to northeast Wednesday through Wednesday night. Along the associated initially stalled sharp surface frontal zone, models indicate that forcing associated with the lead short wave impulse will support a deepening wave somewhere across the Ozark Plateau into lower Great Lakes vicinity. Due to the differing handling of the ongoing intrusion of arctic air, there remains sizable model spread and uncertainty concerning this frontal wave, and the degree of boundary-layer modification within its evolving warm sector. Even weak boundary-layer destabilization occurring in relatively close proximity to this wave probably will be accompanied by at least a conditional risk for severe storms, given the likelihood of strong shear. However, with latest NAM forecast soundings generally maintaining a notable surface-based stable layer and modest mid-level lapse rates, where forcing for ascent is likely to aid convective development, the risk for severe weather still appears negligible through this period. ..Kerr.. 02/03/2025 Read more

SPC Day 2 Fire Weather Outlook

3 months 2 weeks ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1157 AM CST Mon Feb 03 2025 Valid 041200Z - 051200Z ...NO CRITICAL AREAS... The previous forecast outlined below remains on track with no changes needed. Localized fire weather concerns remain possible across the southern High Plains into western NM and possible as far west as eastern AZ to the north of the Mogollon Rim. However, latest ensemble guidance continues to suggest the coverage of elevated fire weather conditions will remain patchy/scattered with inconsistent overlap of dry fuels. ..Moore.. 02/03/2025 .PREV DISCUSSION... /ISSUED 0154 AM CST Mon Feb 03 2025/ ...Synopsis... As ridging aloft continues to intensify over the central US, so to will broad troughing over much of the West. Several embedded perturbations will cross the southern Rockies deepening a lee low over the southern High Plains and a second low over the Great Basin. This could support periods of stronger surface winds (15-25 mph) over portions of NM and far west TX. Warm temperatures and westerly winds appear likely to support low humidity and drying of area fuels, west of returning surface moisture over the southern Plains. Some fire-weather risk is possible over central NM and far west TX where the stronger winds could interact with areas of more receptive fuels. Localized fire-weather concerns are possible and further drying of short-hour fuels is also expected. However, more widespread fire-weather concerns are not currently expected given the relatively minor overlap of sustained winds, low humidity and receptive fuels. ...Please see www.spc.noaa.gov/fire for graphic product... Read more
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