Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 76, NWS Twin Cities, MN

May 8, 2002Blue Earth County, Le Sueur County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 8, 2002, 2:15 PM CDT for Blue Earth County, Le Sueur County, Nicollet County, Minnesota. It was in force for 45 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: May 8, 2002, 2:15 PM CDT (19:15 UTC)
Expired: May 8, 2002, 3:00 PM CDT
In force: 45 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Blue Earth County, MN, Le Sueur County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 94 km from the middle of the area, began a volume at 19:18 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 8, 2:43 PM CDT	Hail 1.25	Mankato, 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, 7.3 hours before the alert went out and 93 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: 565 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 401 m²/s²
0-3 km storm-relative helicity: 393 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 081915
SVRMSP
MNC013-079-103-082000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
215 PM CDT WED MAY 8 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA
  NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA
  BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 300 PM CDT

* AT 215 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL 5 MILES SOUTH OF LAKE CRYSTAL...MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  EAGLE LAKE.
  LAKE CRYSTAL.
  MANKATO.
  NORTH MANKATO.
  ST PETER.

THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 4404 9442 4391 9424 4420 9380 4442 9399

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 11:50 AM CDT	Severe Thunderstorm Warning	MPX	Redwood	55 min
May 8, 12:07 PM CDT	Flash Flood Warning	MPX	Brown, Chippewa, Lac qui Parle, Redwood, Renville, Yellow Medicine	3 hr
May 8, 12:17 PM CDT	Flash Flood Warning	MPX	Brown, Chippewa, Lac qui Parle, Redwood, Renville, Yellow Medicine	3 hr
May 8, 2:48 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	42 min
May 8, 2:54 PM CDT	Severe Thunderstorm Warning	MPX	Scott	36 min
May 8, 2:59 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur	31 min
May 8, 3:04 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice	41 min
May 8, 3:42 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice	48 min
May 8, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	47 min
May 8, 5:16 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	29 min
May 8, 5:24 PM CDT	Tornado Warning	MPX	Goodhue	36 min
May 8, 5:45 PM CDT	Severe Thunderstorm Warning	MPX	Carver	30 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.