Alert archive / Minnesota / Tornado Warnings in 2024

Tornado Warning 33, NWS Twin Cities, MN

August 29, 2024Chisago County, Minnesota; Polk County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Aug 29, 2024, 4:53 PM CDT for Chisago County, Minnesota; Polk County, Wisconsin. It was in force for 20 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
Aug 29, 2024, 4:53 PM CDT (21:53 UTC)
Expired
Aug 29, 2024, 5:13 PM CDT
In force
20 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Observed
Hail
0.75 in

Counties Chisago County, MN, Polk County, WI

The radar

The Minneapolis radar (KMPX), 99 km from the middle of the area, began a volume at 21:55 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 29, 2:33 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.9 hours before the alert went out and 100 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 2024-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 832 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2024-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 242 square meters per square second.193958Sfc1 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
832 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
296 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.9

Open this sounding in Storm Lab

The text

As transmitted.

996 
WFUS53 KMPX 292153
TORMPX
MNC025-WIC095-292230-
/O.NEW.KMPX.TO.W.0033.240829T2153Z-240829T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
453 PM CDT Thu Aug 29 2024

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  Northwestern Chisago County in east central Minnesota...
  Northwestern Polk County in northwestern Wisconsin...

* Until 530 PM CDT.

* At 452 PM CDT, a confirmed tornado was located near North Branch,
  or 8 miles east of Cambridge, moving northeast at 45 mph.

  HAZARD...Damaging tornado.

  SOURCE...Law enforcement confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur. Tree 
           damage is likely.

* The tornado will be near...
  Rush City around 500 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Harris, Rush City Airport, Wild River State Park, and Chengwatana
State Forest.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4572 9287 4564 9289 4564 9273 4553 9297
      4553 9302 4556 9302 4556 9314 4559 9314
      4573 9303 4573 9285
TIME...MOT...LOC 2152Z 224DEG 41KT 4554 9307 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

Borghoff
2 follow-up statements
438 
WWUS53 KMPX 292201
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
501 PM CDT Thu Aug 29 2024

MNC025-WIC095-292230-
/O.CON.KMPX.TO.W.0033.000000T0000Z-240829T2230Z/
Chisago MN-Polk WI-
501 PM CDT Thu Aug 29 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
NORTHWESTERN CHISAGO AND NORTHWESTERN POLK COUNTIES...

At 501 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Rush City, or 13 miles east of Cambridge, moving
northeast at 45 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur. Tree damage is 
         likely.

This dangerous storm will be near...
  Rush City around 505 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Harris, Rush City Airport, Wild River State Park, and Chengwatana
State Forest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4554 9295 4560 9308 4573 9295 4573 9285
      4572 9287 4564 9289 4564 9273 4556 9291
TIME...MOT...LOC 2201Z 224DEG 38KT 4561 9297 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Borghoff
004 
WWUS53 KMPX 292213
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
513 PM CDT Thu Aug 29 2024

MNC025-WIC095-292222-
/O.CAN.KMPX.TO.W.0033.000000T0000Z-240829T2230Z/
Chisago MN-Polk WI-
513 PM CDT Thu Aug 29 2024

...THE TORNADO WARNING FOR NORTHWESTERN CHISAGO AND NORTHWESTERN POLK
COUNTIES IS CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
east central Minnesota...and northwestern Wisconsin.

&&

LAT...LON 4554 9295 4560 9308 4573 9295 4573 9285
      4572 9287 4564 9289 4564 9273 4556 9291
TIME...MOT...LOC 2210Z 224DEG 41KT 4571 9283 

$$

Borghoff

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 2:11 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Stearns34 min
Aug 29, 2:17 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet28 min
Aug 29, 2:29 PM CDTSevere Thunderstorm WarningMPXKandiyohi31 min
Aug 29, 2:33 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet27 min
Aug 29, 2:37 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Stearns, Todd38 min
Aug 29, 2:44 PM CDTSevere Thunderstorm WarningMPXNicollet, Sibley46 min
Aug 29, 2:54 PM CDTSevere Thunderstorm WarningMPXBenton, Meeker, Morrison, Sherburne, Stearns51 min
Aug 29, 3:05 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Wright40 min
Aug 29, 3:12 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Scott, Sibley48 min
Aug 29, 3:31 PM CDTTornado WarningMPXMille Lacs, Morrison29 min
Aug 29, 3:37 PM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs, Morrison53 min
Aug 29, 3:38 PM CDTSpecial Weather StatementMPXWatonwan37 min
Aug 29, 3:42 PM CDTSevere Thunderstorm WarningMPXAnoka, Carver, Dakota, Hennepin, Ramsey, Scott48 min
Aug 29, 3:50 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet, Watonwan25 min
Aug 29, 3:52 PM CDTTornado WarningMPXBlue Earth, Brown, Watonwan23 min
Aug 29, 4:08 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Faribault, Le Sueur, Nicollet, Waseca36 min
Aug 29, 4:18 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Dakota, Hennepin, Ramsey, Washington57 min
Aug 29, 4:32 PM CDTTornado WarningMPXAnoka, Chisago, Isanti28 min
Aug 29, 4:54 PM CDTSpecial Weather StatementMPXSteele, Waseca36 min
Aug 29, 4:58 PM CDTSevere Thunderstorm WarningMPXChisago32 min
Aug 29, 5:30 PM CDTSpecial Weather StatementMPXWashington30 min
Aug 29, 5:34 PM CDTSpecial Weather StatementMPXSteele26 min
Aug 29, 5:19 PM CDTSevere Thunderstorm WarningMPXBarron, Polk29 min
Aug 29, 5:57 PM CDTFlash Flood WarningMPXPolk2 hr
Aug 29, 5:57 PM CDTTornado WarningMPXPierce, Saint Croix33 min
Aug 29, 6:21 PM CDTTornado Warning Tornado observedMPXDunn, Saint Croix39 min
Aug 29, 6:49 PM CDTTornado WarningMPXChippewa, Dunn27 min

Nearby

Tornado Warnings in Minnesota, 2024Tornado Warnings in Wisconsin, 2024Every tornado warning in 2024Tornadoes in 2024

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.