####018000388#### FNUS38 KWNS 272145 PFWF38 DAY 3-8 FIRE WEATHER OUTLOOK AREAL OUTLINE NWS STORM PREDICTION CENTER NORMAN OK 0443 PM CDT WED MAR 27 2024 VALID TIME 291200Z - 041200Z FIRE WEATHER OUTLOOK POINTS DAY 3-8 ... CRITICAL FIRE WEATHER AREA ... D5 32710585 35670499 36530427 36880320 36210218 34990225 34350244 31840364 31390455 31490531 32710585 && ####018003058#### FNUS28 KWNS 272145 FWDD38 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0443 PM CDT Wed Mar 27 2024 Valid 291200Z - 041200Z Strong but predominately zonal mid-level flow is expected across the western US to start the extended forecast period. This pattern will quickly amplify into the weekend as a deepening upper trough moves onshore across southern CA. Strong flow aloft will overspread the southern Plains deepening a lee low and enhancing surface winds. Hot, dry, and windy conditions will support widespread elevated to critical conditions through the weekend and potentially into early next week. Model guidance begins to vary after this with colder and wetter conditions possible behind a cold front expected toward the end of the extended forecast period. ...Southern High Plains... Southwest flow aloft is forecast to quickly strengthen late this week and into the weekend ahead of the deepening Pacific trough. As flow aloft intensifies, several weak perturbations are forecast to move over the southern Rockies into the southern Plains Starting D3/Fri. Aided by the mid-level ascent, the surface lee trough should begin to deepen and bolster westerly surface winds through the afternoon. Forecast soundings show sustained winds of 15-20 mph with higher gusts likely across eastern NM and the TX Panhandle. With temperatures forecast to warm into the 70s, the dry air mass should allow for diurnal RH minimums of 15-20%. Elevated fire-weather conditions are likely, with some hints that localized critical concerns are also possible but more uncertain. Flow aloft should weaken slightly D4/Saturday under the influence of shortwave ridging as the upper air pattern continues to amplify ahead of the western US trough. While weaker, westerly winds should still support lee troughing and 15-20 mph surface winds. Warming temperatures beneath the transient ridging should also keep RH minimums near 15% with elevated fire-weather conditions possible. More significant fire-weather conditions are expected D5/Sun into D6/Mon. The main upper trough will begin to eject eastward spreading 80-100 kt of mid-level flow over the southern Plains. A strong lee low will develop, enhancing southwest surface winds to 25-35 mph and higher gusts. With afternoon RH values in the 10-15% range, widespread critical fire-weather conditions appear likely across parts of west TX and eastern NM. This risk may continue into D6/Monday as the dryline and upper-level systems shift eastward. However, confidence in placement of these features remains lower owing to potential thunderstorms and the arrival of a cold front in the wake of the surface low. Fire-weather concerns appear much less likely through the end of the extended forecast period as below normal temperatures and wetter surface conditions are forecast to develop. ..Lyons.. 03/27/2024 ...Please see www.spc.noaa.gov/fire for graphic product... $$