Area Forecast Discussion
Issued by NWS Rapid City, SD
Issued by NWS Rapid City, SD
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572 FXUS63 KUNR 211011 AFDUNR Area Forecast Discussion For Western SD and Northeastern WY National Weather Service Rapid City SD 411 AM MDT Sat Sep 21 2024 .KEY MESSAGES... -Gusty northwest winds this morning will slowly diminish from west to east this afternoon -Much cooler this weekend, with some frost early Sunday morning across northeast WY and northwest SD -Warming back up next week with little to no precipitation expected && .DISCUSSION...(Today Through Friday) Issued at 1257 AM MDT Sat Sep 21 2024 Water vapor shows split upper trof, with northern stream low over southern SASK and southern stream low over the Desert SW. At the surface, cold front associated with the northern stream low is quickly moving through western SD, with gusty northwest winds in its wake. Gusty northwest will continue through the morning, then gradually diminish from west to east during the afternoon. Strongest winds will be along the eastern slopes of the Black Hills and adjacent plains and current wind advisory looks good. Highs will range from around 60 west to the lower 70s east. Surface high builds into the western Dakotas tonight, with clear skies and light winds resulting in lows in the 30s west to lower 40s east. Some frost possible in the west. Slightly warmer temps are expected Sunday as southerly flow returns. Next upper trof works through later Monday, with winds shifting back around to the northwest. Highs both Monday and Tuesday will be largely in the 70s, warmest on Monday. Upper ridge builds through the Rockies and into the Plains mid to late next week, with dry weather continuing and temps rebounding back into the 80s. && .AVIATION...(For the 12Z TAFS Through 12Z Sunday Morning) Issued At 409 AM MDT Sat Sep 21 2024 Strong north-northwest winds with gusts of 35 to 45 kts this morning will gradually diminish through the day. VFR conditions will continue. && .FIRE WEATHER... Issued At 1257 AM MDT Sat Sep 21 2024 Gusty northwest winds behind a cold front will continue through this morning, with winds slowly diminishing this afternoon. Elevated fire weather conditions will continue given the strong winds, although minimum RH will be 25 to 35 percent. Temperatures through the weekend will be near average, but will then begin to rise again next week as an upper ridge builds back into the region. This will likely bring more elevated fire weather conditions through next week. Little to no precipitation is expected over the next week or so. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...Wind Advisory until noon MDT today for SDZ026-030-031-042-072- 073. WY...None. && $$ DISCUSSION/KEY MESSAGES...Johnson AVIATION...Pojorlie FIRE WEATHER...Johnson