Area Forecast Discussion
Issued by NWS Grand Forks, ND
Issued by NWS Grand Forks, ND
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388 FXUS63 KFGF 231942 AFDFGF Area Forecast Discussion National Weather Service Grand Forks ND 242 PM CDT Mon Sep 23 2024 .KEY MESSAGES... - The probability for weather impacts in the next 7 days is low. && .DISCUSSION... Issued at 242 PM CDT Mon Sep 23 2024 Upper trough digging into the Dakotas this afternoon will continue into MN tonight, eventually amplifying over the upper midwest tomorrow. The passage of the surface trough axis this afternoon and evening will bring a few rain showers, with radar returns already over eastern and central ND. MU CAPE is less than 250 J/kg so even any thunder is unlikely, and there is no shear to speak of. The only reports have been a few hundredths of an inch of rain, so impacts are very minimal as the trough swings through this evening and skies begin to clear out later tonight. Upper ridging over the Rockies will begin to move eastward into the Plains by mid-weak, eventually setting up a blocking pattern with high heights across the Plains into the Great Lakes, jet over Canada, and cut off low well to our south. This pattern will keep it dry and temperatures will return to well above late September averages. Could push above the 80 mark again in some spots, but will depend on clouds and exactly how much the ridge builds over the central CONUS. Next chance for precipitation will be when the blocking pattern breaks down and the next upper trough starts to move into the Dakotas on Monday. However, fairly high uncertainty in the details as the ridge breaks down will hold off on any messaging for now. && .AVIATION /18Z TAFS THROUGH 18Z TUESDAY/... Issued at 1256 PM CDT Mon Sep 23 2024 VFR conditions now and throughout the period with some scattered showers moving in later this evening. Have mostly VCSH and no vis impacts on the airports at this point as it seems rain is very light. Winds will shift from a breezy southerly direction this afternoon to a more southwesterly to westerly direction overnight, then northwesterly at least on the ND side of the Red River by the end of the period. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...None. MN...None. && $$ DISCUSSION...JR AVIATION...JR