Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 63, NWS Twin Cities, MN

May 5, 20024 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 5, 2002, 5:47 PM CDT for 4 counties in Minnesota. It was in force for 43 min. 2 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: May 5, 2002, 5:47 PM CDT (22:47 UTC)
Expired: May 5, 2002, 6:30 PM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Anoka County, MN, Redwood County, MN, Sherburne County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 145 km from the middle of the area, began a volume at 22:49 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
May 5, 5:55 PM CDT	Hail 1	Echo, MN
May 5, 6:20 PM CDT	Hail 1.75	Vesta, MN	Hail broke several windows.

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, 10.8 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1967 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 145 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 052247
SVRMSP
MNC003-141-052330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
547 PM CDT SUN MAY 5 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 630 PM CDT

* AT 547 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 6 MILES WEST OF ANDOVER...OR ABOUT OVER
  RAMSEY...MOVING EAST AT 40 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  ANDOVER.
  EAST BETHEL.
  ELK RIVER.
  HAM LAKE.
  ST FRANCIS.

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

LAT...LON 4542 9353 4532 9358 4515 9308 4538 9306

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 4:15 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	45 min
May 5, 4:44 PM CDT	Severe Thunderstorm Warning	MPX	Renville	31 min
May 5, 4:57 PM CDT	Severe Thunderstorm Warning	MPX	Wright	33 min
May 5, 5:18 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, McLeod	42 min
May 5, 5:30 PM CDT	Severe Thunderstorm Warning	MPX	Wright	60 min
May 5, 5:42 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	48 min
May 5, 6:04 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Ramsey, Washington	56 min
May 5, 6:26 PM CDT	Severe Thunderstorm Warning	MPX	Renville	64 min
May 5, 6:52 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	53 min

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.