Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 67, NWS Twin Cities, MN

May 5, 2002Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 5, 2002, 6:52 PM CDT for Redwood County, Minnesota. It was in force for 53 min. 5 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, 6:52 PM CDT (23:52 UTC)
Expired: May 5, 2002, 7:45 PM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Redwood County, MN

The radar

The Sioux Falls radar (KFSD), 129 km from the middle of the area, began a volume at 23:55 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
May 5, 6:55 PM CDT	Hail 2.5	Amiret, MN
May 5, 6:55 PM CDT	Thunderstorm Wind 52 E	Amiret, MN
May 5, 7:00 PM CDT	Hail 1.25	Milroy, MN
May 5, 7:05 PM CDT	Hail 0.75	Amiret, MN
May 5, 7:20 PM CDT	Hail 1	Lucan, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 5, 6:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.9 hours before the alert went out and 161 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 052352
SVRMSP
MNC127-060045-

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  REDWOOD COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 745 PM CDT

* AT 650 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES 
WEST OF WALNUT GROVE...OR ABOUT 14 MILES SOUTHEAST OF  MARSHALL... 
MOVING EAST AT 40 MPH.  THIS STORM COULD PRODUCE DAMAGING WINDS AS 
WELL AS LARGE HAIL.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
MILROY
WALNUT GROVE
REVERE

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

LAT...LON 4435 9575 4418 9573 4422 9513 4455 9513

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, 5:47 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Redwood, Sherburne, Yellow Medicine	43 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

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.