Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 332, NWS Twin Cities, MN

September 5, 2002Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 5, 2002, 10:44 PM CDT for Wright County, Minnesota. It was in force for 46 min. 1 report 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: Sep 5, 2002, 10:44 PM CDT (03:44 UTC)
Expired: Sep 5, 2002, 11:30 PM CDT
In force: 46 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Wright County, MN

The radar

The Minneapolis radar (KMPX), 65 km from the middle of the area, began a volume at 03:46 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.

What was reported inside it

Time	Report	Where	Remark
Sep 5, 11:24 PM CDT	Hail 0.88	Annandale, 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 00:00Z, 3.7 hours before the alert went out and 63 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1089 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1122 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

751 
WUUS53 KMPX 060344
SVRMSP
MNC171-060430-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1045 PM CDT THU SEP 5 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 1130 PM CDT

* AT 1042 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL 5 MILES WEST OF ANNANDALE...OR ABOUT 18 MILES NORTHEAST OF
  LITCHFIELD. IT WAS MOVING NORTHEAST AT 25 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ANNANDALE.
  SOUTH HAVEN.
  CLEARWATER.
  MAPLE LAKE.
  SILVER CREEK.
  HASTY.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER 
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

ALSO...THIS WARNING REPLACES THE TORNADO WARNING THAT HAD BEEN IN 
EFFECT UNTIL 1045 PM.  THAT STORM...WHICH WAS NEAR COKATO AND HOWARD 
LAKE...HAD WEAKENED CONSIDERABLY.


LAT...LON 4526 9426 4510 9425 4530 9380 4541 9405
          4532 9413

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 5, 9:08 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	37 min
Sep 5, 9:40 PM CDT	Severe Thunderstorm Warning	MPX	Todd	50 min
Sep 5, 9:43 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	62 min
Sep 5, 9:57 PM CDT	Tornado Warning	MPX	Wright	48 min
Sep 5, 10:59 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne, Stearns	46 min
Sep 6, 3:23 AM CDT	Flash Flood Warning	MPX	Hennepin, Wright	4 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002 Every 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; radar from the NEXRAD Level II archive.