Alert archive / Minnesota / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 197, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 11, 2026, 9:09 PM CDT for Kandiyohi County, Pope County, Swift County, Minnesota. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 11, 2026, 9:09 PM CDT (02:09 UTC)
- Expired
- Sep 11, 2026, 9:27 PM CDT
- In force
- 18 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kandiyohi County, MN, Pope County, MN, Swift County, MN
The radar
The Minneapolis radar (KMPX), 158 km from the middle of the area, began a volume at 02:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 11, 6:39 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.2 hours before the alert went out and 156 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 235 J/kg
- Mixed-layer CIN
- -300 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 392 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
551 WUUS53 KMPX 120209 SVRMPX MNC067-121-151-120245- /O.NEW.KMPX.SV.W.0197.260912T0209Z-260912T0245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Twin Cities/Chanhassen MN 909 PM CDT Fri Sep 11 2026 The National Weather Service in the Twin Cities has issued a * Severe Thunderstorm Warning for... Northwestern Kandiyohi County in central Minnesota... Southeastern Pope County in west central Minnesota... Northeastern Swift County in west central Minnesota... * Until 945 PM CDT. * At 909 PM CDT, a severe thunderstorm was located over Lake Hassel, or 23 miles southeast of Morris, moving east at 35 mph. HAZARD...60 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Lake Hassel, Swift Falls, Gilchrist, Monson Lake State Park and Sunburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds. && LAT...LON 4533 9564 4542 9563 4554 9513 4529 9513 TIME...MOT...LOC 0209Z 258DEG 29KT 4537 9556 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ ETA
1 follow-up statement
917 WWUS53 KMPX 120227 SVSMPX Severe Weather Statement National Weather Service Twin Cities/Chanhassen MN 927 PM CDT Fri Sep 11 2026 MNC067-121-151-120237- /O.CAN.KMPX.SV.W.0197.000000T0000Z-260912T0245Z/ Kandiyohi MN-Pope MN-Swift MN- 927 PM CDT Fri Sep 11 2026 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR NORTHWESTERN KANDIYOHI, SOUTHEASTERN POPE AND NORTHEASTERN SWIFT COUNTIES... The storm which prompted the warning has weakened below severe limits, and has exited the warned area. Therefore, the warning has been cancelled. && LAT...LON 4533 9564 4542 9563 4554 9513 4529 9513 TIME...MOT...LOC 0209Z 258DEG 29KT 4537 9555 $$ ETA
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 11, 6:29 PM CDT, 2 hours 40 minutes earlier. Its key messages:
- A few thunderstorms will develop late this afternoon and tonight, primarily north of I-94. A few storms could produce large hail, damaging winds, and potentially a tornado.
- Widespread rain arrives Monday, but forecast rain amounts have trended lower.
- Turning much cooler this weekend and next week with highs in the 60s to low 70s.
Area forecast discussion, Sep 11, 6:29 PM CDT, 2 hours 40 minutes before
Area Forecast Discussion National Weather Service Twin Cities/Chanhassen MN 629 PM CDT Fri Sep 11 2026 .KEY MESSAGES... - A few thunderstorms will develop late this afternoon and tonight, primarily north of I-94. A few storms could produce large hail, damaging winds, and potentially a tornado. - Widespread rain arrives Monday, but forecast rain amounts have trended lower. - Turning much cooler this weekend and next week with highs in the 60s to low 70s. && .DISCUSSION... Issued at 126 PM CDT Fri Sep 11 2026 Despite being a tad on the breezy side, its turning out to be a nice albeit warm September afternoon. Current temps range in the 80s and are forecast to reach the upper 80s across western MN this afternoon where warm advection is currently strongest. Wind gusts continue to peak between 30-40 mph along the Buffalo Ridge whereas most other sites report gusts between 20-30 mph this afternoon. Winds are expected to decrease late tonight into early tomorrow once a cold front tracks through the northern plains later this evening. Latest water vapor imagery shows a deepening ridge extending north and east of the Great Lakes region while an elongated troughing pattern stretches from the northern plains over the PacNorthwest. Embedded within this troughing pattern is a low-level wave which will serve as our next feature of interest over the next 12-24 hours. Skies this afternoon our ahead of the wave will gradually increase from west for the remainder of the evening. Current mesoanalysis features an h85 low located over central South Dakota. Ahead of this low, a strong 40-50kt LLJ is transporting warmer and moist air up into the northern plains. Additionally, a SW to NW oriented swath of mixed layer instability of ~1000 J/kg exists which has allowed for continued isolated convective pulses on radar. Luckily, enough inhibition is in place to keep any precip development isolated and brief. However, that will not be the case as head into later this afternoon and evening. The aforementioned h85 low will continue to track east into MN through the rest of today. As this occurs, low-level forcing becomes maximized while CINH erodes, and lapse rates deepen to 7.0 to 7.5 deg C/km. This environment will allow for better organized convection to initiate over west- central and northern MN. Since early this morning, the SPC has reduced the Slight Risk (level 2 of 5) spatially to be confined more to central and northern Minnesota this evening. Forecast guidance continues to advertise much of the strongest convection mainly north of a line that extends from Morris to St. Cloud. Early in the event, forecast hodographs advertise sufficient effective- layer shear combined with low LCLs nearing 1km. Thus any supercells that manage to get their act together could be conducive enough to support a tornado or two and large hail. As the line continues east into central and eastern MN this evening, the line transitions into more a of damaging wind gust threat. By tonight, the wave driving these storms reaches western WI. Although forcing will not be as strong as previous hours, rain showers and sub-severe storms are expected to develop along the axis of residual instability. Total QPF will vary depending on where the strongest rainfall occurs this evening but areas north and west of a line from Mora down to Appleton could see a couple hundredths to a quarter of an inch of rain with higher localized amounts. Areas across western Wisconsin could see a hundredth or tenth of an inch. Most of the weekend appears fairly tranquil. Winds will remain a tad breezy out of the NW on Saturday morning near 20kts but will decrease as surface high pressure becomes the dominant feature through the daylight hours. Skies during this time should remain mostly clear. By Saturday night, a narrow band of forcing will move across southern MN that is part of upper-level troughing over Hudson Bay area. Scattered rain showers could develop mostly across southern Minnesota during this time but the majority of Sunday features partly cloudy to mostly clear skies by the afternoon. Its isn't until Monday that we see the arrival of our next widespread rainfall chances. A stacked 998mb low will sweep across the International Border. Widespread rainfall will move from west to east throughout much of the day. Most precip looks in the form of rain and some embedded thunder however, areas along and south of the I-90 corridor could see a stronger storm or two Monday evening. QPF for this episode continue to trend downward. The NBM and EPS have favored widespread 1-2" rain totals but the more realistic solutions appear with the GEFS. Thus have shifted the 1-2" swath farther south and east in southern MN into western WI. Areas north of this region would more so observe a half inch to closer to an inch. If you're a lover of "sweater weather" or enjoy a cup of hot apple cider then the temperature forecast will make you happy. Saturday begins our downward temp trend. Forecast highs will only warm into the low to mid-70s and then even cooler on Sunday in the upper 60s, with lows in the mid to upper 40s. But wait there's more! This cooler airmass should hang around through much of next week with highs mainly in the upper 60s and lows near 50. && .AVIATION /00Z TAFS THROUGH 06Z SUNDAY/... Issued at 623 PM CDT Fri Sep 11 2026 Satellite continues to favor development of -TSRA over western MN that will move eastwards over the first 6-8 hours of the period, with the best chances at AXN/STC with lower chances elsewhere. -TSRA in eastern South Dakota will need to hold together to reach RWF/MKT/MSP/RNH/EAU, which to this point has not been handled well in the CAMs to have enough confidence to include. Gusty 160-190 winds will slowly diminish through the period, dwindling below 20kts towards the end of the period after shifting towards 280-320 behind the cold front. CIGS will generally only occur within -TSRA, also containing the best chance for IFR/MVFR. KMSP...Omitted any mention of -TSRA for now, with the line of storms in eastern South Dakota the thing to watch. This has not been resolved well within CAMs and may need a short term AMD should it make it this far east. Our thinking right now is that we should be free of any -SHRA/-TSRA at MSP, with these storms dying off before reaching us. /OUTLOOK FOR KMSP/ SUN...VFR, chc -SHRA early. Wind NW 5kts. MON...-SHRA/MVFR likely, chc IFR. Wind SE 10-15G30kts. TUE...VFR. Wind NW 5-10kts. && .MPX WATCHES/WARNINGS/ADVISORIES... MN...None. WI...None. && DISCUSSION...Dunleavy AVIATION...TDH
Hazardous weather outlook, Sep 11, 1:40 PM CDT, 7 hours 29 minutes before
Hazardous Weather Outlook National Weather Service Twin Cities/Chanhassen MN 140 PM CDT Fri Sep 11 2026 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014-015-023-024- 121845- Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns- Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa- Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington- Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota- Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth- Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-St. Croix- Pierce- 140 PM CDT Fri Sep 11 2026 This Hazardous Weather Outlook is for portions of central and southern Minnesota, and west central Wisconsin. .DAY ONE...Tonight. There is a chance of thunderstorms this evening across western and portions of central Minnesota, with a level 2 out of 5 risk for severe weather. The main hazards are large hail and damaging winds, although a tornado or two cannot be ruled out. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... SKYWARN spotter activation will likely be needed this evening across western and portions of central Minnesota. WIZ016-025>028-121845- Rusk-Dunn-Pepin-Chippewa-Eau Claire- 140 PM CDT Fri Sep 11 2026 This Hazardous Weather Outlook is for portions of northwest Wisconsin and west central Wisconsin. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... SKYWARN spotter activation will not be needed. Dunleavy
In the hours before
Local storm report, Sep 11, 7:45 PM CDT, 1 hour 24 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
745 PM CDT Fri Sep 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM Hail Chokio 45.57N 96.18W
09/11/2026 M1.00 Inch Stevens MN Public
0730 PM Tstm Wnd Dmg Chokio 45.57N 96.17W
09/11/2026 Stevens MN Public
Power outage in Chokio due to tree branches
on power lines.
&&Local storm report, Sep 11, 7:52 PM CDT, 1 hour 17 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
752 PM CDT Fri Sep 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0751 PM Tornado 7 NE Artichoke 45.47N 96.08W
09/11/2026 Stevens MN Trained Spotter
Tornado touchdown reported 7 miles northeast
of Artichoke. Location estimated.
&&Local storm report, Sep 11, 7:55 PM CDT, 1 hour 14 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
755 PM CDT Fri Sep 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0754 PM Hail 7 S Alberta 45.47N 96.07W
09/11/2026 M1.75 Inch Stevens MN Trained Spotter
Golf ball sized hail 8 miles northeast of
Artichoke MN reported by Trained Spotter.
&&Local storm report, Sep 11, 8:09 PM CDT, 1 hour before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
809 PM CDT Fri Sep 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0738 PM Hail 6 S Alberta 45.49N 96.06W
09/11/2026 M1.25 Inch Stevens MN Public
Report from mPING: Half Dollar (1.25 in.).
0740 PM Hail 7 NE Artichoke 45.47N 96.06W
09/11/2026 M1.00 Inch Stevens MN Public
Report from mPING: Quarter (1.00 in.).
0753 PM Hail 5 E Artichoke 45.43N 96.06W
09/11/2026 M1.75 Inch Stevens MN Public
Report from mPING: Golf Ball (1.75 in.).
&&Local storm report, Sep 11, 8:20 PM CDT, 49 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
820 PM CDT Fri Sep 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0750 PM Tornado 8 S Alberta 45.46N 96.06W
09/11/2026 Stevens MN Trained Spotter
8 power poles blocking county highway 9 near
Trinity Lutheran Cemetery.
&&Local storm report, Sep 11, 8:36 PM CDT, 33 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
836 PM CDT Fri Sep 11 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0828 PM Hail 7 S Alberta 45.47N 96.08W
09/11/2026 M1.50 Inch Stevens MN Trained Spotter
0830 PM Hail 7 S Alberta 45.47N 96.06W
09/11/2026 M1.75 Inch Stevens MN Public
&&The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 7:41 PM CDT | Severe Thunderstorm Warning | MPX | Stevens | 38 min |
| Sep 11, 7:46 PM CDT | Tornado Warning | MPX | Stevens | 23 min |
| Sep 11, 8:04 PM CDT | Tornado Warning | MPX | Stevens | 18 min |
| Sep 11, 8:32 PM CDT | Severe Thunderstorm Warning | MPX | Stevens, Swift | 16 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.