####018001581#### FNUS21 KWNS 161534 FWDDY1 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0933 AM CST Tue Feb 16 2021 Valid 161700Z - 171200Z ...NO CRITICAL AREAS... No forecast changes are needed. Morning surface observations through the lower CO river valley show winds increasing amid surface pressure falls over the Four Corners. Cold air advection just above the surface along with diurnal heating will allow for steep low-level lapse rates favorable for supporting wind gusts up to 30-40 mph this afternoon. Relative humidity values near 15-20% remain likely, but recent fuel analyses continue to show unready fuels over the region. ..Moore.. 02/16/2021 .PREV DISCUSSION... /ISSUED 1255 AM CST Tue Feb 16 2021/ ...Synopsis... With continued, but weakening, high pressure across areas east of the Divide, cold temperatures and precipitation are expected to keep fire weather concerns very low today. Broad upper-level troughing will continue over most of the U.S. with shortwave trough moving through this parent trough and into the southern Plains. This shortwave will keep strong mid-level flow across the Colorado River Valley. RH in southern Nevada into southwestern Arizona could fall as low as 15-20%. Localized elevated conditions are possible as surface winds increase to 15-25 mph in conjunction with a deepening surface trough in the High Plains to the east. However, sparse, marginal fuels preclude highlights. ...Please see www.spc.noaa.gov/fire for graphic product... $$