textproduct: Bismarck

KEY MESSAGES

- Areas of dense fog this morning, mainly in the northwestern, southwestern, and south central portions.

- High temperatures above normal today through the start of next week.

- Dry conditions to remain through the weekend.

DISCUSSION

Issued at 340 AM CST Fri Nov 6 2026

Weak and dry clipper system will push across southern Canada today. Ahead of this front will be moist southerly flow, which will then switch to a warm and dry westerly flow. Areas of dense fog will be found in this southerly flow this morning, mainly in southwest and south central portions. Expect this to linger most of the morning or until the mentioned clipper system can switch winds to a dry westerly flow. Thus these mentioned areas now have a Dense Fog Advisory through the morning. Meanwhile, lingering fog in the northwest continues to diminish and become more patchy. Issued a short SPS to account for this early this morning. Otherwise look for warming temperatures and mainly dry conditions today once winds become westerly with highs in the mid 40s to mid 50s. Dry conditions look to continue through tonight with more mild lows in the mid 20s to mid 30s. Some fog could return, although may generally be confined to the southeast where lighter winds are forecast. Zonal to northwest flow aloft, with a quick moving clipper followed by ridging at the surface, will bring a mainly dry and warm weekend. Look for highs in the mid 50s to mid 60s each day, with mild lows in the 30s. Another dry clipper system could bring some breezy westerly winds on Saturday, although these should remain below advisory criteria with the main clipper staying to the north. Steady southerly winds then look to return for Sunday.

Above normal temperatures and mainly dry conditions remain in the forecast for early to mid next week. Broad ridging to our west cold allow for some weak impulses at times in northwest flow across the region. Most of these have limited moisture to work with and the current forecast only has slight pops on Tuesday. Near to above normal temperatures in the mid 40s to mid 50s are forecast each day, with lows also mild and generally in the 30s. Any disturbances that move through could bring some breezy winds at times, with some breezy westerly winds forecast for Monday. Clusters have the western ridge moving through the are later next week. This will maintain the above normal temperatures along with mainly dry conditions.

AVIATION /06Z TAFS THROUGH 06Z SATURDAY/

Issued at 1157 PM CST Thu Nov 5 2026

Low stratus and fog, occasionally dense, lingers over northwestern North Dakota to begin the 06Z TAF period. Fog is currently being observed in the northwest, impacting KXWA. This fog may erode later tonight as a weak front moves through. Another round of low stratus and fog is expected to develop over portions of central North Dakota later tonight through Friday morning. The higher confidence in visibility reductions down to IFR to MVFR conditions is expected along Highway 83. Have opted to include MVFR ceilings at KBIS Friday morning, but have left VFR visibility at KMOT and KJMS with this update due to slightly stronger winds at these locations. IFR to MVFR ceilings are more broadly expected at KMOT, KBIS, and KJMS through Friday morning. Low stratus and fog is generally expected to improve through late Friday morning into Friday afternoon, holding over longest at KJMS.

Winds overnight are expected to remain fairly light, turning from the south to southwest overnight. Winds then strengthen Friday morning and afternoon, turning gusty out of the west with sustained speeds up to 15 knots and gusts up to 25 knots over portion of the northwest and north central.

BIS WATCHES/WARNINGS/ADVISORIES

Dense Fog Advisory until noon CST /11 AM MST/ today for NDZ023- 025-035>037-042-044-046-047-050-060>062.