Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 195, NWS Twin Cities, MN

July 21, 2004Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 21, 2004, 4:44 PM CDT for Todd County, Minnesota. It was in force for 46 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
Jul 21, 2004, 4:44 PM CDT (21:44 UTC)
Expired
Jul 21, 2004, 5:30 PM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Todd County, MN

The radar

The Minneapolis radar (KMPX), 198 km from the middle of the area, began a volume at 21:45 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 12:00Z, 9.7 hours before the alert went out and 196 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 2004-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 97 joules per kilogram.LCLLFCEL10008507005003002001001 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 2004-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
97 J/kg
Mixed-layer CIN
-248 J/kg
Mixed-layer LCL
981 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
333 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 212144
SVRMPX
MNC153-212230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
444 PM CDT WED JUL 21 2004

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TODD COUNTY IN CENTRAL MINNESOTA

* UNTIL 530 PM CDT

* AT 441 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS
  LOCATED 12 MILES WEST OF HEWITT...OR ABOUT 28 MILES NORTH OF
  ALEXANDRIA...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...  
  BERTHA.
  BROWERVILLE.
  CLARISSA.
  EAGLE BEND.
  HEWITT.
  PHILBROOK.

LAT...LON 4638 9543 4617 9545 4601 9467 4633 9465

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 10:25 PM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine50 min
Jul 21, 12:06 AM CDTSevere Thunderstorm WarningMPXNicollet, Sibley39 min
Jul 21, 12:26 AM CDTSevere Thunderstorm WarningMPXBrown, Redwood49 min
Jul 21, 1:01 AM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice59 min
Jul 21, 2:04 AM CDTSevere Thunderstorm WarningMPXGoodhue56 min
Jul 21, 6:28 PM CDTSevere Thunderstorm WarningMPXChippewa32 min
Jul 21, 6:48 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Renville, Yellow Medicine57 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.