Alert archive / Minnesota / Tornado Warnings in 2024

Tornado Warning 22, NWS Twin Cities, MN

August 5, 2024Blue Earth County, Waseca County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 5, 2024, 6:22 PM CDT for Blue Earth County, Waseca County, Minnesota. It was in force for 23 min. 5 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
Aug 5, 2024, 6:22 PM CDT (23:22 UTC)
Expired
Aug 5, 2024, 6:45 PM CDT
In force
23 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Blue Earth County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 93 km from the middle of the area, began a volume at 23:23 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
Aug 5, 6:38 PM CDTTORNADO3 S Janesville, MNSpotter report of a large tornado moving ESE just south of Janesville.
Aug 5, 6:42 PM CDTTORNADO2 S Janesville, MNSeveral large trees and branches down along county road 2 south of Janesville. Time estimated from radar.
Aug 5, 6:42 PM CDTTORNADO3 Ene Pemberton, MNSeveral downed branches and damage to a structure within Alma City. Time estimated from radar.
Aug 5, 6:45 PM CDTTORNADO3 Se Janesville, MNSeveral large trees snapped. Relayed via Broadcast Media. Time estimated from radar.
Aug 5, 6:47 PM CDTTSTM WND DMG5 Wsw Waseca, MNCorrects previous tstm wnd dmg report from 5 WSW Waseca. Delayed LSR - Photos submitted of damage to destroyed grain bin and crop damage. Time estimated via radar. Estimated wind between 80-85 mph.

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

The watch it was issued in

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

IssuedProductOfficeLasted
Aug 5, 5:24 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.4 hours before the alert went out and 92 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 2024-08-05Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2024-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
700 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

491 
WFUS53 KMPX 052322
TORMPX
MNC013-161-052345-
/O.NEW.KMPX.TO.W.0022.240805T2322Z-240805T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
622 PM CDT Mon Aug 5 2024

The National Weather Service in the Twin Cities has issued a

* Tornado Warning for...
  East central Blue Earth County in south central Minnesota...
  Southern Waseca County in south central Minnesota...

* Until 645 PM CDT.

* At 622 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over St. Clair, or 10 miles southeast of Mankato,
  moving east at 20 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...
  Pemberton around 625 PM CDT.

Other locations impacted by this tornadic thunderstorm include Waseca
Airport and Alma City.
 
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 4402 9391 4414 9383 4408 9347 4387 9361
TIME...MOT...LOC 2322Z 289DEG 18KT 4406 9381 

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

$$

Dye

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 3:20 AM CDTFlood WatchMPXDakota, Goodhue, Rice18 hr
Aug 5, 4:53 AM CDTSpecial Weather StatementMPXYellow Medicine37 min
Aug 5, 5:19 PM CDTTornado WarningMPXWatonwan26 min
Aug 5, 5:34 PM CDTTornado WarningMPXWatonwan26 min
Aug 5, 5:53 PM CDTTornado WarningMPXBlue Earth, Watonwan37 min
Aug 5, 5:59 PM CDTTornado WarningMPXBlue Earth, Nicollet31 min
Aug 5, 6:20 PM CDTSpecial Weather StatementMPXWaseca25 min
Aug 5, 6:20 PM CDTTornado WarningMPXBlue Earth, Faribault25 min
Aug 5, 6:36 PM CDTTornado WarningMPXFaribault24 min
Aug 5, 6:39 PM CDTTornado Warning Tornado observedMPXSteele, Waseca36 min
Aug 5, 6:54 PM CDTSpecial Weather StatementMPXDakota36 min
Aug 5, 6:59 PM CDTTornado WarningMPXFaribault, Freeborn31 min

Nearby

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