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Joined: Feb 2001
Posts: 381,904
Launch Director
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Launch Director
Joined: Feb 2001
Posts: 381,904 |
SPC Day 1 Fire Weather OutlookSPC Day 1 Fire Weather Outlook  Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0132 AM CDT Mon Mar 17 2025
Valid 171200Z - 181200Z
...CRITICAL FIRE WEATHER AREA FOR THE SOUTHERN AND CENTRAL HIGH PLAINS...
...Synopsis... Widespread critical fire weather conditions are expected today across a broad swath of the southern and central Plains. More localized fire weather concerns are expected across parts of the Florida Peninsula.
...Southern to central Plains... Early-morning water-vapor imagery shows upper ridging shifting east towards the central CONUS with strong zonal flow over the northern Rockies. This upper flow regime has been promoting steady lee troughing along the northern and central High Plains over the past 12 hours, with further deepening to around 1000 mb expected through the day as a surface cyclone emerges across the northern Plains and a secondary lee cyclone develops in eastern CO. The anomalously strong surface low (surface pressures are expected to approach the 10th percentile for mid-March in the Plains) juxtaposed with a surface high across the Southeast will induce a robust low-level mass response with widespread 15-25 mph winds from TX to the MO River Valley. 05 UTC observations already show a southerly flow regime becoming established across TX and OK, but a recent frontal intrusion into the Gulf has shunted quality moisture well offshore. Consequently, a dry return flow regime is expected across much of the southern to central Plains.
Guidance continues to show high confidence in widespread 20-25 sustained winds across a broad swath of the southern and central Plains. A corridor of 30-40 mph gusts appears likely from central TX through central/northeast OK into eastern KS and western MO. The meager moisture return coupled with diurnal heating and some degree of downslope warming/drying along the High Plains will result in widespread RH reductions into the single digits and low teens across eastern CO/NM and western TX/OK and into the low to mid 20s further north and east. Fuels across much of the central and south-central CONUS are considered supportive of fire spread based on either recent fire activity, high ERC values, or steady drying over the past 24-48 hours over areas that received rainfall late last week. Consequently, fire weather concerns are expected across a broad swath of the Plains. A regional minimum in wind speeds is likely across parts of northeastern CO into adjacent parts of KS and NE in close proximity to the surface low, but periods of breezy conditions and warm/dry conditions will still support some fire concern. Confidence in long-duration critical conditions is highest from eastern NM into western TX and western/central OK.
...Florida... Recent MRMS QPE shows that limited rain has fallen across parts of the central FL peninsula after yesterday's frontal passage. In the wake of this front, dry northerly winds are expected today as a surface high migrates into the Southeast. A combination of dry/breezy conditions (wind speeds between 15-20 mph) should promote areas of elevated fire weather conditions over a region with ERC values between the 70-90th percentile.
..Moore.. 03/17/2025
...Please see www.spc.noaa.gov/fire for graphic product...
Read morehttps://www.spc.noaa.gov/products/fire_wx/fwdy1.html
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