Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 128, NWS Twin Cities, MN

June 24, 20024 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 24, 2002, 3:37 PM CDT for 4 counties in Minnesota. It was in force for 38 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 24, 2002, 3:37 PM CDT (20:37 UTC)
Expired
Jun 24, 2002, 4:15 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Anoka County, MN, Hennepin County, MN, Ramsey County, MN, Washington County, MN

What was reported inside it

TimeReportWhereRemark
Jun 24, 3:39 PM CDTHail 1Coon Rapids, MN
Jun 24, 3:40 PM CDTHail 0.75Brooklyn Center, MN
Jun 24, 3:47 PM CDTHail 1.75Blaine, 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, 8.6 hours before the alert went out and 47 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 2002-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 278 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 2002-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 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
278 J/kg
Mixed-layer CIN
-322 J/kg
Mixed-layer LCL
1573 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
127 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 242037
SVRMSP
MNC003-053-123-163-242115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
337 PM CDT MON JUN 24 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA
  EASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 415 PM CDT

* AT 337 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL 2 MILES NORTHEAST OF BROOKLYN PARK...OR ABOUT 12 MILES NORTH
  OF MINNEAPOLIS...MOVING EAST AT 30 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  BLAINE.
  BROOKLYN PARK.
  COON RAPIDS.
  STILLWATER.

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

LAT...LON 4523 9342 4505 9344 4496 9277 4522 9278

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 4:10 PM CDTSevere Thunderstorm WarningMPXStearns35 min
Jun 24, 5:02 PM CDTFlash Flood WarningMPXBenton, Sherburne, Stearns118 min
Jun 24, 5:09 PM CDTSevere Thunderstorm WarningMPXSherburne, Wright51 min
Jun 24, 5:23 PM CDTFlash Flood WarningMPXChisago, Isanti97 min
Jun 24, 5:47 PM CDTSevere Thunderstorm WarningMPXAnoka43 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.