Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 211, NWS Twin Cities, MN

August 1, 2004Blue Earth County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 1, 2004, 3:53 AM CDT for Blue Earth County, Nicollet County, Minnesota. It was in force for 37 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 1, 2004, 3:53 AM CDT (08:53 UTC)
Expired
Aug 1, 2004, 4:30 AM CDT
In force
37 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Blue Earth County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 83 km from the middle of the area, began a volume at 08:52 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 8.9 hours before the alert went out and 81 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 00:00Z on 2004-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 465 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 00:00Z on 2004-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 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
465 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1194 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
395 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMPX 010853 CCA
SVRMPX
MNC013-103-010930-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED EXPIRATION TIME
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
351 AM CDT SUN AUG 1 2004

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA
  NORTHERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 430 AM CDT

* AT 345 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM     
  WAS LOCATED 10 MILES NORTHWEST OF MANKATO...AND MOVING SOUTHEAST   
  AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MANKATO.
  NICOLLET.
  EAGLE LAKE.
  
LAT...LON 4435 9425 4412 9434 4403 9380 4431 9409

$$
MBK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 7:32 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Watonwan58 min
Jul 31, 10:28 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Scott47 min
Jul 31, 10:46 PM CDTSevere Thunderstorm WarningMPXMcLeod29 min
Jul 31, 10:51 PM CDTSevere Thunderstorm WarningMPXDakota, Ramsey, Washington39 min
Aug 1, 3:51 AM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet39 min
Aug 1, 5:03 AM CDTSevere Thunderstorm WarningMPXFreeborn57 min
Aug 1, 5:41 AM CDTFlash Flood WarningMPXWaseca2 hr
Aug 1, 6:35 AM CDTSevere Thunderstorm WarningMPXFaribault55 min
Aug 1, 8:10 AM CDTFlash Flood WarningMPXFreeborn13 hr
Aug 1, 9:38 AM CDTSevere Thunderstorm WarningMPXMcLeod32 min
Aug 1, 10:40 AM CDTSevere Thunderstorm WarningMPXDakota50 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2004Every severe thunderstorm warning in 2004

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.