333 FXUS63 KMPX 261914 AFDMPXArea Forecast Discussion National Weather Service Twin Cities/Chanhassen MN 214 PM CDT Fri Sep 26 2025
.KEY MESSAGES...
- Seasonably mild & dry weather continues through the end of the September.
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.DISCUSSION... Issued at 213 PM CDT Fri Sep 26 2025 Another pleasant Fall day with highs in the mid 70s to low 80s, mostly sunny skies, and no precipitation. Aloft, the current pattern is dominated by two upstream features: the persistent troughing in the Gulf of Alaska and a stubborn ridging across the north-central NOAM. This has forced the jet stream & low pressures into Canada while we`re left in weak flow aloft. I would expect this type of pattern to persist into October given the longevity of each feature. In plain language - we`re more likely to experience seasonably warm & dry conditions as any low pressures track up and over the ridge. The one notable weather feature will be a dry frontal passage Saturday morning, that`ll bring a brief cool down to highs in the low to mid 70s as opposed to upper 70s/lower 80s. Northwest winds will be gusty behind the front on Saturday. Sporadic gusts up to 25 mph appear possible. Behind the front, we`ll usher in a drier air mass with dew point temperatures in the 40s to lower 50s.
Temperatures begin to rebound on Sunday before the ridge amps up early next week. Highs will climb into the 80s Monday & Tuesday before another dry FROPA will cool us back into the 70s for the second half of next week. That remains 5 to 10+ degrees above our normal temperatures for early October. The one glimmer of hope for precip arrives late week as a potent shortwave trough moves through southern Canada. Guidance depicts an uptick in moisture advection ahead of this wave that`ll allow the chance for showers & thunderstorms along the sfc boundary Friday. The current signal is noisy as ensemble members are spread between drier & wetter solutions in the EPS & GEFS. There is also the potential tropical system off the SE coast that will introduce an extra variable to the forecast equation for mid to late week.&&
.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1231 PM CDT Fri Sep 26 2025
Minimal changes to the TAFs with timing for the dry fropa tonight changing little from the 12z TAFs. Only airport with some sub-VFR concern would be EAU. The front comes through late enough where they could get a little fog/br in the morning before the fropa. In addition, a brief MVFR cig will be possible out there as mixing gets going behind the front Saturday morning. Otherwise, this is a pretty uneventful TAF period.
KMSP...FROPA timing looks to be between 10z and 12z Saturday.
/OUTLOOK FOR KMSP/ SUN...VFR. Wind S 5-10 kts. MON...VFR. Wind SSE 5-15 kts. TUE...VFR. Wind SE 5-15 kts.
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.MPX WATCHES/WARNINGS/ADVISORIES... MN...None. WI...None.
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DISCUSSION...BPH AVIATION...MPG
NWS MPX Office Area Forecast Discussion