Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 212, NWS Twin Cities, MN

August 1, 2004Freeborn County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 1, 2004, 5:03 AM CDT for Freeborn County, Minnesota. It was in force for 57 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, 5:03 AM CDT (10:03 UTC)
Expired
Aug 1, 2004, 6:00 AM CDT
In force
57 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 10:06 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, 10.1 hours before the alert went out and 129 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 011003
SVRMPX
MNC047-011100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
503 AM CDT SUN AUG 1 2004

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 600 AM CDT

* AT 502 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS
  LOCATED 14 MILES NORTHWEST OF ALBERT LEA...AND MOVING SOUTHEAST AT
  15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ALBERT LEA.
  HARTLAND.
  CLARKS GROVE.
  GENEVA.
  GLENVILLE.

LAT...LON 4383 9308 4383 9363 4352 9365 4352 9306

$$

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, 3:53 AM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet37 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.