Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 272, NWS Twin Cities, MN

August 12, 2002Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 12, 2002, 12:07 AM CDT for Douglas County, Minnesota. It was in force for 38 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 12, 2002, 12:07 AM CDT (05:07 UTC)
Expired
Aug 12, 2002, 12:45 AM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Douglas County, MN

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.1 hours before the alert went out and 181 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 2002-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1443 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 00:00Z on 2002-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
1443 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
1692 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

997 
WUUS53 KMPX 120507
SVRMSP
MNC041-120545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1205 AM CDT MON AUG 12 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 1245 AM CDT

* AT 1205 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH
  LARGE HAIL 5 TO 10 MILES NORTHWEST OF ALEXANDRIA...NEAR BRANDON.
  THE STORM WAS MOVING EAST AT 25 MPH. NICKEL SIZE HAIL IS POSSIBLE.
  OTHER STORMS MAY ALSO DEVELOP AROUND ALEXANDRIA OR GARFIELD.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ALEXANDRIA.
  CARLOS.
  MILTONA.
  NELSON.
  MILLERVILLE.
  LEAF VALLEY.

THIS IS A DANGEROUS STORM WITH LARGE HAIL...STAY INDOORS AWAY FROM
WINDOWS.

LAT...LON 4595 9550 4578 9543 4577 9515 4608 9520

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 9:59 PM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine61 min
Aug 11, 11:16 PM CDTSevere Thunderstorm WarningMPXPope, Stevens, Swift59 min
Aug 11, 11:53 PM CDTSevere Thunderstorm WarningMPXRedwood, Yellow Medicine37 min
Aug 12, 12:23 AM CDTSevere Thunderstorm WarningMPXMartin, Watonwan52 min
Aug 12, 12:55 AM CDTSevere Thunderstorm WarningMPXFaribault50 min
Aug 12, 2:14 AM CDTSevere Thunderstorm WarningMPXRamsey31 min
Aug 12, 2:27 AM CDTSevere Thunderstorm WarningMPXAnoka, Washington48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002Every severe thunderstorm warning in 2002

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.