Storm Prediction Center Day 1 Fire Weather Outlook
Created: Fri Mar 31 14:16:03 UTC 2023 (
|
)
|
Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL FNUS21 KWNS 311415 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0915 AM CDT Fri Mar 31 2023 Valid 311700Z - 011200Z ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE CENTRAL/SOUTHERN PLAINS... The previous forecast remains on track regarding widespread, high-end critical fire-weather conditions developing this afternoon in portions of the Central/Southern Plains. No changes were made to the Elevated/Critical areas. Although fuels do not support a delineated area, the greatest chance for Extremely Critical meteorological conditions (relative humidities around 5-10 percent and sustained winds around 30 mph) will extend from the OK/TX Panhandles south through the Caprock and Rolling Plains. Critically dry and windy post-frontal conditions may also develop farther east across southeastern KS and central OK. Moister fuels and some overnight precipitation -- especially south of the I-44 corridor -- lessen the overall threat here, but an increase in initial attack is possible. ..Flournoy/Bentley.. 03/31/2023 .PREV DISCUSSION... /ISSUED 0115 AM CDT Fri Mar 31 2023/ ...Synopsis... A deepening surface low will track northeast across the Central/High Plains with an attendant cold front tracking eastward across the Plains into the Ohio and Mississippi River Valleys on Friday. Behind the cold front, clearing skies are expected with a broad region of strong westerly flow and relative humidity reductions creating Elevated to Critical Fire weather conditions across portions of the Central and Southern Plains. ...Central and Southern Plains... Strong downslope warming and drying is expected across eastern Colorado and eastern New Mexico into western Texas, Oklahoma, and Kansas. Relative humidity reductions to 15-20 percent with sustained westerly winds 25-35 mph will be likely, supporting a Critical delineation. This area was expanded to reflect recent HREF guidance and lack of meaningful rainfall across western Kansas and Oklahoma on Thursday. Relative humidity could drop as low as 10 percent across some portion of this region, which would suggest corridors of Extremely Critical fire weather conditions are possible. HREF conditional probabilities highlight the most likely region for Extremely Critical conditions to occur across southwestern Texas into the Oklahoma Panhandle. Fuels in this region do not support including an Extremely Critical area at this time, given ERCs largely around the 60-70th percentile. Even so, this scenario remains a high-end Critical fire weather situation. Elevated conditions will extend into eastern Oklahoma and Kansas. Fuels within this region are less supportive of fire spread due to recent rainfall. Even so, dry and gusty conditions Friday will support some response in fine fuels and potential for increased risk of fire spread. ...Please see www.spc.noaa.gov/fire for graphic product...