Marine Weather and Tide Forecast for Wyoming, MN

DISCUSSION
Issued at 333 AM CDT Sat Jul 25 2026

Extensive low stratus has developed overnight across MN, western WI, southward into NE and MO thanks to rich moisture advection around 925 mb. The cloud depth is only about 1 kft, so the clouds should lift and scatter relatively quickly this morning.
Once the clouds scatter, temperatures will climb into the low to mid 90s this afternoon across MN and upper 80s in WI. Combined with dew points in the 65-70 degree range across central MN and northwest WI to the 75-80 degree range across southern MN, heat indices will peak in the 95-100 degree range across central MN and western WI, to around 105 across south central and west central MN. Extreme Heat Warnings begin this afternoon from the metro south and west, with a Heat Advisory across central MN and far western WI. Rising heights and increasing 700 mb temperatures should put a lid on thunderstorm development this afternoon in most areas, but a few storms may fire in parts of WI where capping is weaker. However, the lack of clear forcing may too prevent much from developing. Understandably, CAMs are not too optimistic today. If a storm does develop, it will have plenty of deep layer shear and instability to work with, so the severe risk today is conditional. Additional storms may fire over central and western SD this afternoon where very hot temperatures of 105-110 are predicted. Should they organize and develop a cold pool, they may track into southwestern MN late this evening or overnight.

The impacts of any overnight convection do raise some questions as to how hot highs will get Sunday. Mid 90s are forecast across the region which should be easily doable if the cold pool washes out quickly. If not, it may be a few degrees cooler, but dew points may be even higher. ECMWF and Canadian models are advertising low 80s across much of southern and western MN. Even with highs in the lower 90s, lower 80s dew points will still result in heat indices nearing 115. Confidence is high the warning will verify, even if confidence in high temperatures is lower. Expanded the warning north and east for Sunday, but kept the watch going from Douglas to Rusk counties where it remains marginal.

A diffuse cold front will push southeast Sunday night. Forcing along the front is very weak, but a strengthening LLJ Sunday evening could be a compensating forcing mechanism. 700 mb temps remain very warm (+12 to +15C) which is usually prohibitively high to support convective development. Nonetheless, some models, including the ECMWF, insist on convection developing Sunday evening and diving south into IA overnight. This MCS would be capable of wind damage should it form. Confidence remains low.

Drier air will work in Monday which is expected to keep heat indices below warning criteria. Depending how warm highs can get, a Heat Advisory may eventually be necessary.

Northwest flow continues all next week. Ripples embedded within the flow could bring chances for thunderstorms at any point, but these are not predictable at this range. Temperatures will remain very warm with several days in the low 90s expected.

AVIATION /12Z TAFS THROUGH 18Z SUNDAY/
Issued at 623 AM CDT Sat Jul 25 2026

MVFR and IFR cigs will persist for the next few hours before gradually clearing from west to east. Southwesterly winds will become light and variable through this afternoon before turning south again late this evening. There is a non-zero chance for some showers and thunderstorms this afternoon but confidence in development is very low, so have left all sites dry.

KMSP...No additional concerns.

/OUTLOOK FOR KMSP/ SUN...VFR. Chc for -TSRA PM. Wind SSW 10 kts.
MON...VFR. W 5-10 kts becoming NW at 10-15G25 kts.
TUE...VFR. Wind NW 5-10 kts.

MPX WATCHES/WARNINGS/ADVISORIES
MN...Heat Advisory from noon today to 11 AM CDT Sunday for Benton- Chisago-Douglas-Goodhue-Isanti-Kanabec-Mille Lacs- Morrison-Sherburne-Stearns-Todd.
Extreme Heat Watch from Sunday morning through Sunday evening for Douglas-Kanabec-Mille Lacs-Morrison-Todd.
Extreme Heat Warning from noon today to 9 PM CDT Sunday for Anoka-Blue Earth-Brown-Carver-Chippewa-Dakota-Faribault- Freeborn-Hennepin-Kandiyohi-Lac Qui Parle-Le Sueur-Martin- McLeod-Meeker-Nicollet-Pope-Ramsey-Redwood-Renville-Rice- Scott-Sibley-Steele-Stevens-Swift-Waseca-Washington- Watonwan-Wright-Yellow Medicine.
Extreme Heat Warning from 11 AM to 9 PM CDT Sunday for Benton- Chisago-Goodhue-Isanti-Sherburne-Stearns.
WI...Heat Advisory from noon today to 11 AM CDT Sunday for Pierce- Polk-St. Croix.
Extreme Heat Watch from Sunday morning through Sunday evening for Barron-Rusk.
Extreme Heat Warning from 11 AM to 9 PM CDT Sunday for Chippewa-Dunn-Eau Claire-Pepin-Pierce-Polk-St. Croix.