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Falkirk, North Dakota Weather Forecast Discussion

535
FXUS63 KBIS 231927
AFDBIS

Area Forecast Discussion National Weather Service Bismarck ND 227 PM CDT Tue Sep 23 2025

.KEY MESSAGES...

- Patchy fog possible south central into the James River Valley late tonight into Wednesday morning.

- Above average temperatures and dry conditions are expected through the week. &&

.DISCUSSION... Issued at 1255 PM CDT Tue Sep 23 2025

Westerlies remain pretty much north of the Border through the rest of the work week. Weak surface high pressure propagates east through the region tonight into Wednesday morning. On Wednesday morning there may be some patchy fog over the south central and eastern portions of North Dakota, with better probabilities over areas east of the James River Valley. Did add a mention of patchy fog south central into the JRV Wednesday morning.

Late in the day Wednesday through Thursday morning, a weak dry cold front drops southeast through the forecast area bringing not much more than a wind shift and some slightly cooler temperatures in the northwest and north central. Another cold front traverses the forecast area on Friday. At this time, the threat for any precipitation looks to remain well to our north and east with this system. There will be a little more potential for some breezy conditions Friday afternoon over central into eastern ND out of the south, ahead of the front. Also from the northwest over western ND mid to late afternoon behind the cold front, especially if we are able to mix out to the higher westerly winds at the top of the mixed layer. At this time the potential for any wind highlights are low.

Fire Weather concerns may begin to creep higher in parts of the far west as we get into the later portions of the work week and the weekend due to continued dry weather, warm temperatures with lower humidities and possible mix-out conditions each afternoon. However at this time, the probability for near critical to critical fire weather conditions looks to remain low. Will continue to monitor percent green values as we get deeper into the fall season.

High temperatures on Saturday range from the 70s central to around 80 far west. Sunday we see highs climb into the mid 70s Turtle Mountains to the mid 80s southwest. Temperatures cool slightly early next week with only a minimal uptick in precipitation chances through the early portion of the work week.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/... Issued at 1147 AM CDT Tue Sep 23 2025

VFR conditions are expected through the 18Z TAF period. The only exception could be some patchy fog over the far south central and into the James River Valley early Wednesday morning. However, at this time uncertainty is too high to mention at the KBIS or KJMS TAF. A north to northwest surface flow today will become light tonight and remain light at KBIS and KJMS, but will shift to the south-southwest at KXWA, KMOT and KDIK Wednesday morning.

&&

.BIS WATCHES/WARNINGS/ADVISORIES... None.

&&

$$

DISCUSSION...TWH AVIATION...TWH

NWS BIS Office Area Forecast Discussion

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