Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 145, NWS Twin Cities, MN

June 25, 2002Isanti County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 25, 2002, 6:40 PM CDT for Isanti County, Minnesota. It was in force for 50 min. 3 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
Jun 25, 2002, 6:40 PM CDT (23:40 UTC)
Expired
Jun 25, 2002, 7:30 PM CDT
In force
50 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

County Isanti County, MN

What was reported inside it

TimeReportWhereRemark
Jun 25, 7:00 PM CDTHail 1.5Cambridge, MN
Jun 25, 7:15 PM CDTHail 0.75Cambridge, MN
Jun 25, 7:21 PM CDTHail 1.75Isanti, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 85 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 2002-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 520 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 2002-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
520 J/kg
Mixed-layer CIN
-599 J/kg
Mixed-layer LCL
2109 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 252340
SVRMSP
MNC059-260030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
640 PM CDT TUE JUN 25 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ISANTI COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 730 PM CDT

* AT 640 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL 18 MILES WEST OF CAMBRIDGE...OR ABOUT 2 MILES NORTH OF
  PRINCETON...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  CAMBRIDGE.
  ISANTI.

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

LAT...LON 4569 9349 4549 9351 4547 9320 4565 9318

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 7:17 PM CDTSevere Thunderstorm WarningMPXWright58 min
Jun 24, 7:42 PM CDTSevere Thunderstorm WarningMPXWright33 min
Jun 24, 7:51 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker39 min
Jun 24, 8:30 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Wright60 min
Jun 24, 8:57 PM CDTFlash Flood WarningMPXCarver, Hennepin, McLeod, Wright3 hr
Jun 24, 10:26 PM CDTSevere Thunderstorm WarningMPXLac qui Parle49 min
Jun 24, 10:33 PM CDTSevere Thunderstorm WarningMPXWright42 min
Jun 24, 10:55 PM CDTTornado WarningMPXCarver, Wright35 min
Jun 24, 11:11 PM CDTFlash Flood WarningMPXMeeker5 hr
Jun 24, 11:23 PM CDTSevere Thunderstorm WarningMPXChippewa52 min
Jun 24, 11:48 PM CDTFlash Flood WarningMPXHennepin, Meeker, Wright4 hr
Jun 25, 12:46 AM CDTSevere Thunderstorm WarningMPXMeeker44 min
Jun 25, 1:37 AM CDTFlash Flood WarningMPXCarver, McLeod2 hr
Jun 25, 5:03 PM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine57 min
Jun 25, 5:50 PM CDTSevere Thunderstorm WarningMPXKanabec40 min
Jun 25, 6:17 PM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs43 min
Jun 25, 6:28 PM CDTSevere Thunderstorm WarningMPXKanabec47 min
Jun 25, 6:41 PM CDTSevere Thunderstorm WarningMPXLac qui Parle64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.