Area Forecast Discussion
Issued by NWS Twin Cities, MN
Issued by NWS Twin Cities, MN
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850 FXUS63 KMPX 050712 AFDMPX Area Forecast Discussion National Weather Service Twin Cities/Chanhassen MN 212 AM CDT Sat Sep 5 2026 .KEY MESSAGES... - Chances for thunderstorms Saturday & Sunday morning across western Minnesota. - More widespread rainfall possible Monday into Tuesday, though areas across northern MN are favored for heaviest amounts. - More seasonable airmass arrives for the rest of the week after Tuesday. && .DISCUSSION... Issued at 205 AM CDT Sat Sep 5 2026 If you look out your window to the west and squint hard enough, you may be able to see the broad cluster of storms ongoing early this morning across the Dakotas. These storms are developing within an area of WAA along the eastern edge of the nocturnal LLJ. As the morning progresses, expect the storms to gradually move east into parts of western MN, though they may be waning as the LLJ weakens by mid morning. A couple thousand Joules of MLCAPE and effective wind shear of about 35 kts could support some organization of storms, and result in isolated cases of severe wind or hail, particularly across southwest MN. Overall heat impacts will be lower today with temperatures in the 80s and dewpoints largely in the 60s. Southwest MN may still feel muggy with 70 degree dewpoints lingering into today. This pattern remains the same for the rest of the holiday weekend, with the ridge aloft only just starting to break down by Monday. Our best chance for more widespread precip will be tied to the shortwave that moves through Monday into Tuesday, though northern Minnesota remains favored for the best forcing and greatest rainfall potential. The SPC has a marginal risk for severe weather over western MN for the next three days while this hot and stormy pattern holds. The rest of the week will feature increased NW/W flow, ushering in a more seasonable airmass for early September. && .AVIATION /06Z TAFS THROUGH 12Z SUNDAY/... Issued at 1235 AM CDT Sat Sep 5 2026 Low stratus is making the slow westward creep from WI into MN at initialization, with the expectation that all sites will be dealing with IFR ceilings prior to sunrise and lasting potentially into late morning. Ceilings will likely drop to between 400-800ft, potentially as low as 200ft which may come along with visibility restrictions. By late morning and continuing for the rest of the TAF period, the low level moisture will be scoured out and VFR conditions will prevail. Winds will remain NE to E throughout this duration with speeds under 10kts. KMSP...Low stratus will likely be realized at MSP by 08z (if not 07z) and persist past sunrise and potentially to close to 18z. IFR initially expected, with LIFR ceilings possible. Ceilings look to rise into low-range MVFR before clearing out altogether for the afternoon-evening hours with only high clouds remaining. /OUTLOOK FOR KMSP/ MON...Mainly VFR. Chc SHRA/MVFR. Wind SE 10-15kts. TUE...SHRA/MVFR likely with chc TSRA, mainly in the morning. Clearing late. Wind S 10-15kts becoming W. WED...VFR. W 10-15kts. && .MPX WATCHES/WARNINGS/ADVISORIES... MN...None. WI...None. && $$ DISCUSSION...BED AVIATION...JPC