


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
443 FNUS21 KWNS 140656 FWDDY1 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0156 AM CDT Wed May 14 2025 Valid 141200Z - 151200Z ...CRITICAL FIRE WEATHER AREA FOR PARTS OF EASTERN AZ AND SOUTHERN NM... ...Synopsis... A broad upper trough over the western US is forecast to deepen as it moves eastward over the central US. A lee low and dryline will strengthen over the Plains, supporting dry and breezy conditions over much of the western and central CONUS. While strong southerly winds are also possible ahead of the deepening surface low, returning surface moisture and precipitation chances are also expected, complicating some fire-weather potential. Critical fire-weather conditions appear most likely over parts of the Southwest. ...Southwest... Moderate mid-level flow at the base of the ejecting upper-trough will support westerly downslope winds of 20-25 mph across parts of the Southwest this afternoon and evening. A very dry surface pattern is expected to continue with above normal temperatures and little recent rainfall. This should support widespread RH below 15%. With sufficient fuels in place, and additional drying expected, several hours of critical fire-weather conditions are likely over southeastern AZ into southern NM and west TX. ...Central and Northern Plains... A strong lee low with a trailing dryline will gradually deepen as the upper trough begins to move over the Plains. Dry downslope flow is possible over parts of the central/northern Plains into the Upper Midwest behind the strengthening dryline. With RH minimums below 30% and wind gusting to 20 mph, some elevated fire-weather threat may be possible across parts of CO/KS and NE into the Dakotas and western MN. However, the strongest meteorological conditions are not expected to overlap with areas of supportive fuels given past rainfall and additional rain through the period. Increasing surface moisture may also limit any appreciable overlap. This will favor a more localized threat with only isolated elevated fire-weather conditions expected. ..Lyons.. 05/14/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$