textproduct: Bismarck

KEY MESSAGES

- Patchy fog tonight in the southwest.

- Above normal temperatures favored for most areas this week, with highs in the 30s and 40s.

- Medium chances for light rain and snow across southern North Dakota this evening.

UPDATE

Issued at 545 PM CST Mon Feb 9 2026

Limited updates needed early this evening. There is some light rain and snow being reported near the ND/SD border and could linger into the early evening hours. Otherwise partly clear to cloudy skies will be found tonight with perhaps some patchy fog in the southwest and cooler lows in the mid teens to mid 20s. Overall just minor updates to PoPs based on current radar trends for this update.

DISCUSSION

Issued at 320 PM CST Mon Feb 9 2026

Water vapor imagery shows a wave moving through South Dakota along a frontal boundary. Dry layer aloft and subsidence is hindering precipitation from reaching I-94. Rain and snow has been observed in the southwest today from this wave. High temperatures are forecast to warm into the mid 30s to lower 40s. Tonight temperatures are forecast to drop down into the upper teens to mid 20s. Patchy fog is forecast to form in the southwest tonight lighter winds recent moisture could enable fog development.

The pattern will remain fairly stagnant this week. Temperatures will range from the 30s to 40s all week. The upper level pattern will remain in a quasi zonal flow into early next week. A split flow upper level pattern will majority of the waves north and south of North Dakota. Thursday one of the aforementioned waves could move across the Central Plains however the only precipitation chances are along the North and South Dakota border. Split flow will remain through weekend keeping the pattern fairly quiet. An upper level trough is forecast to dig across western CONUS early next week which could lead to a more active pattern next week.

AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/

Issued at 545 PM CST Mon Feb 9 2026

Light rain and snow may linger across the south early this evening, although should miss the TAF sites. Cloudy skies could then be found tonight, with perhaps some periods of MVFR ceilings. Patchy fog is also possible, although confidence was not high enough to include in the TAFs at this time. Look for clearing skies tomorrow, although some sites could see FEW to SCT MVFR ceilings through the morning, and even continue into the afternoon. Westerly winds will also be found through much of the forecast period.

BIS WATCHES/WARNINGS/ADVISORIES

None.