Alert archive / Minnesota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 105, NWS Twin Cities, MN

June 19, 2026Chisago County, Minnesota; Polk County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 19, 2026, 4:37 PM CDT for Chisago County, Minnesota; Polk County, Wisconsin. It was in force for 53 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 19, 2026, 4:37 PM CDT (21:37 UTC)
Expired
Jun 19, 2026, 5:30 PM CDT
In force
53 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Possible
Hail
1.25 in
Wind
60.0 mph

Counties Chisago County, MN, Polk County, WI

The radar

The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 21:37 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.

What was reported inside it

TimeReportWhereRemark
Jun 19, 5:06 PM CDTHAIL 13 Se Rush City, MN
Jun 19, 5:21 PM CDTHAIL 18 Wnw Milltown, WI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 29 minutes after it went out.

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.

IssuedProductOfficeLasted
Jun 19, 2:01 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.6 hours before the alert went out and 108 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2026-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2026-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1251 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

241 
WUUS53 KMPX 192137
SVRMPX
MNC025-WIC095-192230-
/O.NEW.KMPX.SV.W.0105.260619T2137Z-260619T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
437 PM CDT Fri Jun 19 2026

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northern Chisago County in east central Minnesota...
  Northwestern Polk County in northwestern Wisconsin...

* Until 530 PM CDT.

* At 437 PM CDT, a severe thunderstorm was located 7 miles south of
  Grasston, or 11 miles north of Cambridge, moving southeast at 35
  mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage to
           roofs, siding, and trees.

* Locations impacted include...
  Rush City, Rush City Airport, Harris, Chengwatana State Forest,
  Wild River State Park, Wolf Creek, Cushing, Taylors Falls and St.
  Croix Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 4564 9263 4568 9252 4538 9266 4561 9314
      4573 9314 4573 9285 4572 9285 4572 9287
      4564 9289
TIME...MOT...LOC 2136Z 293DEG 29KT 4569 9318

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TDH
2 follow-up statements
351 
WWUS53 KMPX 192214
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
514 PM CDT Fri Jun 19 2026

MNC025-WIC095-192230-
/O.CON.KMPX.SV.W.0105.000000T0000Z-260619T2230Z/
Chisago MN-Polk WI-
514 PM CDT Fri Jun 19 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
CENTRAL CHISAGO AND NORTHWESTERN POLK COUNTIES...

At 514 PM CDT, a severe thunderstorm was located 12 miles north of
Center City, or 23 miles east of Cambridge, moving southeast at 35
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to
         roofs, siding, and trees.

Locations impacted include...
  Harris, Wild River State Park, Wolf Creek, Cushing, Taylors Falls
  and St. Croix Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.

&&

LAT...LON 4564 9263 4566 9253 4568 9252 4538 9266
      4561 9314 4566 9314 4567 9288 4564 9289
TIME...MOT...LOC 2137Z 293DEG 29KT 4569 9316

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TDH
087 
WWUS53 KMPX 192231
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
531 PM CDT Fri Jun 19 2026

MNC025-WIC095-192241-
/O.EXP.KMPX.SV.W.0105.000000T0000Z-260619T2230Z/
Chisago MN-Polk WI-
531 PM CDT Fri Jun 19 2026

...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR CENTRAL CHISAGO AND
NORTHWESTERN POLK COUNTIES...

The Severe Thunderstorm Warning that was previously in effect has
been reissued for Polk and Chisago Counties and is in effect until
615 PM CDT. Please refer to that bulletin for the latest severe
weather information.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
portions of east central Minnesota and northwest Wisconsin.

&&

LAT...LON 4564 9263 4566 9253 4568 9252 4538 9266
      4561 9314 4566 9314 4567 9288 4564 9289
TIME...MOT...LOC 2214Z 293DEG 29KT 4557 9276

$$

TDH

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 Jun 19, 1:39 PM CDT, 2 hours 58 minutes earlier. Its key messages:

  • Scattered thunderstorms this afternoon & evening. The strongest storms could contain large hail & gusty winds, especially along & north of Interstate 94.
  • Seasonable cool & dry this weekend.
  • Below normal temperatures continue next week. Rain chances return mid-week.
Area forecast discussion, Jun 19, 1:39 PM CDT, 2 hours 58 minutes before
Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
139 PM CDT Fri Jun 19 2026

.KEY MESSAGES...

- Scattered thunderstorms this afternoon & evening. The
  strongest storms could contain large hail & gusty winds,
  especially along & north of Interstate 94.

- Seasonable cool & dry this weekend.

- Below normal temperatures continue next week. Rain chances
  return mid-week.

&&

.DISCUSSION...
Issued at 116 PM CDT Fri Jun 19 2026

Light rain showers are exiting the area across western Minnesota
while another band of light rain is moving across the I-90
corridor across far-southern Minnesota. However, our area of
interest this afternoon will be with the building cumulus field
across northwest & west-central Minnesota. Instability isn't
going to be great after the rain & clouds this morning, but
very steep mid-level lapse rates mean than surface-based CAPE
of 500-1000 J/kg should develop this afternoon & allow for these
budding showers to build into scattered thunderstorms by mid-
afternoon. Impressive wind shear for mid-June will be in place
over the area as a jetstreak over the Upper Midwest provides
around 60 kts of 0-6km shear across MN & WI. However the weaker
instability means that any thunderstorms probably wont be able
to realize all of this deep shear, so effective shear values
look to be on the order of 30-40 kts across central MN & western
WI where we expect the most widespread storm coverage. This
still plenty of shear for storms to become organized, so we are
expecting a few strong to severe thunderstorms later this
afternoon with large hail the primary threat followed by
sporadic damaging wind gusts. The main window for these severe
thunderstorms looks to be between 3 PM to 7 PM, with the Storm
Prediction Center highlighting an area along the I-94 Corridor
of eastern MN & western WI with a Level 2/5 (Slight Risk) threat
of severe storms. The storms will begin to weaken as we get
closer to sunset, with the thunderstorms threat mostly over with
across western Wisconsin by 8-9 PM.

Weak high pressure moves into the region behind today's system,
setting up a seasonably cool & dry weekend with highs generally
in the low to mid 70s expected. Can't rule out a coupe, isolated
rain showers across western Wisconsin from the cumulus field
Saturday afternoon, but better chances for light rain look to
come Sunday morning across far-southern Minnesota. However, the
main threat for rain looks to set up to our south over Iowa.

Looking into next week: zonal flow aloft should extend the quiet
weekend weather into Monday, but building troughing over the
Great Lakes brings an increased chance for rain Tuesday into
Wednesday. This mainly looks to be another system with
widespread rain showers & a few isolated thunderstorms, & the
threat for any severe weather or heavy rain is low. Northwest
flow persists through the week in response to the troughing
over the Great Lakes & building ridging over the west, which
will keep temperatures seasonably cool through the week. Models
hint at various transient disturbances embedded within the
northwest flow that could lead to low chances for precipitation
later in the week, but mostly quiet weather looks to be the
forecast until next weekend.

&&

.AVIATION /18Z TAFS THROUGH 00Z SUNDAY/...
Issued at 1235 PM CDT Fri Jun 19 2026

VFR conditions through most of the period. However, another
round of scattered showers and storms expected late this
afternoon and evening where reductions in flight categories will
be possible if TSRA impact terminals. TEMPO groups remain in
the TAF for MSP, AXN, STC, RNH, and EAU for TSRA. Main impacts
will be gusty winds, reductions to VIS due to moderate to heavy
rainfall, lowing CIGs, and lightning.

Winds will increase through the afternoon out of the W/NW at
10-15 knots with gusts to 20 knots, terminals across western MN
could see gusts to 25 knots during the afternoon and early
evening.

Shower/storms activity will quickly decrease after 01z this
evening will skies becoming SKC by 02z to 03z with winds
becoming light at 3-7 knots, out of the NW.

KMSP...Scattered showers and storms possible late this afternoon
and evening. TEMPO group remains in the TAF for -TSRA. If TSRA
impacts terminals, reductions in flight categories will be
likely. Shower and storm activity will diminish after 01Z.
Winds this afternoon will be out of the W at 9-13 knots with
gusts to 20 knots possible, becoming NW late this evening at
5-10 knots. Skies will become SKC to FEW around sunset.

/OUTLOOK FOR KMSP/
SUN... VFR. Wind ENE at 5-10 kts.
MON... VFR. Wind NE at 5-10 kts.
TUE... VFR. Chc of MVFR/TSRA. Wind SSW at 5-10 kts.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.

&&

DISCUSSION...ETA
AVIATION...LPR
Hazardous weather outlook, Jun 19, 3:00 AM CDT, 13 hours 37 minutes before
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
300 AM CDT Fri Jun 19 2026

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
200800-
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-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
300 AM CDT Fri Jun 19 2026

This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.

.DAY ONE...Today and Tonight.

Scattered thunderstorms will develop this afternoon, most numerous
across central and eastern Minnesota and western Wisconsin. There
is a level 1 out of 5 risk for severe thunderstorms capable of
marginally severe hail and gusty winds into the early evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed.

Borghoff

In the hours before

Local storm report, Jun 19, 4:22 PM CDT, 15 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
422 PM CDT Fri Jun 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0415 PM     Hail             Rush City               45.68N 92.96W
06/19/2026  M1.00 Inch       Chisago            MN   Trained Spotter

&&

BED
Special weather statement, Jun 19, 4:22 PM CDT, 15 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
422 PM CDT Fri Jun 19 2026

MNZ060-061-192215-
Hennepin MN-Anoka MN-
422 PM CDT Fri Jun 19 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN HENNEPIN AND SOUTH
CENTRAL ANOKA COUNTIES UNTIL 515 PM CDT...

At 422 PM CDT, Doppler radar was tracking a strong thunderstorm near
Corcoran, or 11 miles east of Buffalo, moving east at 30 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Minneapolis, Brooklyn Park, Plymouth, Maple Grove, Coon Rapids,
  Blaine, Brooklyn Center, Fridley, Champlin, Golden Valley, Columbia
  Heights, Rogers, St. Anthony, Spring Lake Park, Corcoran, Medina
  and Rockford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4521 9364 4515 9320 4512 9320 4512 9323
      4504 9323 4503 9321 4497 9321 4508 9375
      4509 9373 4511 9372 4515 9368 4516 9364
      4517 9364 4519 9366
TIME...MOT...LOC 2122Z 280DEG 25KT 4514 9364

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

TDH
Special weather statement, Jun 19, 4:23 PM CDT, 14 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
423 PM CDT Fri Jun 19 2026

MNZ051>053-061-192215-
Anoka MN-Chisago MN-Isanti MN-Sherburne MN-
423 PM CDT Fri Jun 19 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN ISANTI...NORTHERN
ANOKA...SOUTH CENTRAL CHISAGO AND EAST CENTRAL SHERBURNE COUNTIES
UNTIL 515 PM CDT...

At 423 PM CDT, Doppler radar was tracking a strong thunderstorm near
Elk River, or 19 miles southwest of Cambridge, moving east at 40 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Cambridge, Elk River, Ham Lake, East Bethel, St. Francis,
  Zimmerman, Stacy, Oak Grove, Wyoming, Nowthen, Athens, Bethel,
  Cedar and Weber.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4534 9367 4548 9365 4549 9297 4530 9299
      4530 9302 4525 9302
TIME...MOT...LOC 2123Z 271DEG 35KT 4539 9356

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

TDH
Local storm report, Jun 19, 4:32 PM CDT, 5 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
432 PM CDT Fri Jun 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0415 PM     Hail             1 WNW Grasston          45.80N 93.17W
06/19/2026  M1.00 Inch       Kanabec            MN   Trained Spotter

&&

BED
Local storm report, Jun 19, 4:33 PM CDT, 4 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
433 PM CDT Fri Jun 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0420 PM     Hail             Hanover                 45.16N 93.67W
06/19/2026  M0.88 Inch       Wright             MN   Trained Spotter

&&

BED
Local storm report, Jun 19, 4:37 PM CDT, 0 minutes before
Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
437 PM CDT Fri Jun 19 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0417 PM     Hail             5 NE Day                45.75N 93.29W
06/19/2026  M0.88 Inch       Kanabec            MN   Trained Spotter

&&

BED

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 1:59 PM CDTSpecial Weather StatementMPXMorrison46 min
Jun 19, 2:25 PM CDTSpecial Weather StatementMPXMille Lacs50 min
Jun 19, 2:46 PM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison44 min
Jun 19, 3:18 PM CDTSpecial Weather StatementMPXMorrison42 min
Jun 19, 3:23 PM CDTSpecial Weather StatementMPXKanabec37 min
Jun 19, 3:25 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs65 min
Jun 19, 3:32 PM CDTSevere Thunderstorm Warning Considerable damage threatMPXMorrison43 min
Jun 19, 3:39 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti, Kanabec51 min
Jun 19, 3:52 PM CDTSpecial Weather StatementMPXWright38 min
Jun 19, 4:13 PM CDTTornado WarningMPXIsanti, Kanabec32 min
Jun 19, 4:16 PM CDTSpecial Weather StatementMPXBenton44 min
Jun 19, 4:19 PM CDTSevere Thunderstorm WarningMPXMorrison40 min
Jun 19, 4:22 PM CDTSpecial Weather StatementMPXHennepin53 min
Jun 19, 4:23 PM CDTSpecial Weather StatementMPXAnoka52 min
Jun 19, 4:39 PM CDTSevere Thunderstorm WarningMPXAnoka, Dakota, Hennepin, Ramsey49 min
Jun 19, 4:43 PM CDTSevere Thunderstorm WarningMPXMille Lacs22 min
Jun 19, 4:45 PM CDTTornado WarningMPXChisago45 min
Jun 19, 5:09 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti, Sherburne14 min
Jun 19, 5:28 PM CDTSevere Thunderstorm WarningMPXRamsey, Washington47 min
Jun 19, 5:30 PM CDTSevere Thunderstorm WarningMPXChisago45 min
Jun 19, 5:49 PM CDTSevere Thunderstorm WarningMPXChisago56 min
Jun 19, 6:09 PM CDTSpecial Weather StatementMPXCarver, Dakota, Hennepin, Le Sueur, McLeod, Ramsey and 3 more66 min
Jun 19, 5:37 PM CDTSevere Thunderstorm WarningMPXDunn, Eau Claire, Pepin53 min
Jun 19, 5:44 PM CDTSpecial Weather StatementMPXRusk61 min
Jun 19, 6:06 PM CDTSpecial Weather StatementMPXPierce54 min
Jun 19, 6:11 PM CDTSevere Thunderstorm WarningMPXPierce, Saint Croix34 min
Jun 19, 6:16 PM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix41 min
Jun 19, 6:16 PM CDTSevere Thunderstorm WarningMPXBarron, Polk31 min
Jun 19, 6:30 PM CDTSevere Thunderstorm WarningMPXChippewa, Eau Claire15 min
Jun 19, 6:44 PM CDTSevere Thunderstorm WarningMPXEau Claire46 min
Jun 19, 6:46 PM CDTSpecial Weather StatementMPXDunn44 min
Jun 19, 6:49 PM CDTSevere Thunderstorm WarningMPXDunn, Pepin, Pierce41 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2026Severe Thunderstorm Warnings in Wisconsin, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.