Alert archive / Minnesota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 231

May 5, 20027 counties in Iowa; 36 counties in Minnesota; 12 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at May 5, 2002, 6:00 PM CDT for 7 counties in Iowa; 36 counties in Minnesota; 12 counties in Wisconsin. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 5, 2002, 6:00 PM CDT (23:00 UTC)
Expired
May 6, 2002, 12:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 55 counties

Dickinson County, IA, Emmet County, IA, Howard County, IA, Lyon County, IA, Osceola County, IA, Winnebago County, IA, Worth County, IA, Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Mower County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Olmsted County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI

The radar

The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 23:04 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.

Warnings issued inside it

14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 5, 6:04 PM CDTSevere Thunderstorm WarningMPXHennepin, Ramsey, Washington56 min
May 5, 6:26 PM CDTSevere Thunderstorm WarningMPXRenville64 min
May 5, 6:45 PM CDTSevere Thunderstorm WarningMPXSaint Croix45 min
May 5, 6:52 PM CDTSevere Thunderstorm WarningMPXRedwood53 min
May 5, 7:07 PM CDTSevere Thunderstorm WarningMPXSibley53 min
May 5, 7:16 PM CDTSevere Thunderstorm WarningMPXRamsey, Washington29 min
May 5, 7:20 PM CDTSevere Thunderstorm WarningMPXDunn40 min
May 5, 7:33 PM CDTSevere Thunderstorm WarningFSDDickinson, Ida, Osceola27 min
May 5, 7:34 PM CDTSevere Thunderstorm WarningMPXSaint Croix41 min
May 5, 7:54 PM CDTSevere Thunderstorm WarningFSDDickinson21 min
May 5, 7:54 PM CDTSevere Thunderstorm WarningMPXMcLeod51 min
May 5, 8:02 PM CDTSevere Thunderstorm WarningMPXScott, Sibley58 min
May 5, 8:06 PM CDTSevere Thunderstorm WarningDMXEmmet39 min
May 5, 9:51 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Waseca39 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.0 hours before the alert went out and 71 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 2002-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2002-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939587897Sfc1 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
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

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 5, 4:30 PM CDTTornado WatchSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 14 more7 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in Wisconsin, 2002Severe Thunderstorm Watches in Iowa, 2002Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.