Alert archive / Minnesota / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 662

September 1, 200223 counties in Minnesota; 16 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Sep 1, 2002, 12:45 PM CDT for 23 counties in Minnesota; 16 counties in Wisconsin. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Sep 1, 2002, 12:45 PM CDT (17:45 UTC)
Expired
Sep 1, 2002, 7:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 39 counties

Anoka County, MN, Benton County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Chippewa County, WI, Douglas County, WI, Dunn County, WI, Iron County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Taylor County, WI, Washburn County, WI

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Sep 1, 1:10 PM CDTSevere Thunderstorm WarningMPXTodd40 min
Sep 1, 1:32 PM CDTSevere Thunderstorm WarningMPXMille Lacs28 min
Sep 1, 2:07 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd53 min
Sep 1, 2:11 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Pine49 min
Sep 1, 2:39 PM CDTSevere Thunderstorm WarningMPXKanabec51 min
Sep 1, 2:46 PM CDTSevere Thunderstorm WarningMPXStearns44 min
Sep 1, 2:59 PM CDTSevere Thunderstorm WarningMPXMorrison61 min
Sep 1, 3:03 PM CDTSevere Thunderstorm WarningDLHPine27 min
Sep 1, 3:23 PM CDTSevere Thunderstorm WarningDLHBurnett52 min
Sep 1, 3:27 PM CDTSevere Thunderstorm WarningDLHDouglas63 min
Sep 1, 3:28 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns62 min
Sep 1, 3:48 PM CDTSevere Thunderstorm WarningDLHWashburn42 min
Sep 1, 3:49 PM CDTSevere Thunderstorm WarningDLHWashburn41 min
Sep 1, 3:58 PM CDTSevere Thunderstorm WarningMPXMorrison62 min
Sep 1, 4:11 PM CDTSevere Thunderstorm WarningDLHBurnett64 min
Sep 1, 4:26 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley49 min
Sep 1, 4:31 PM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs44 min
Sep 1, 5:14 PM CDTSevere Thunderstorm WarningMPXCarver, Scott, Sibley61 min
Sep 1, 5:17 PM CDTFlash Flood WarningDLHPine3 hr
Sep 1, 5:39 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne51 min
Sep 1, 6:55 PM CDTSevere Thunderstorm WarningMPXDakota50 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 5.8 hours before the alert went out and 110 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 2002-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 319 joules per kilogram.LCLLFCEL10008507005003002001001 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 2002-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 208 square meters per square second.193958Sfc1 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
319 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
208 m²/s²
0-3 km storm-relative helicity
219 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
Aug 31, 7:00 PM CDTSevere Thunderstorm WatchSPCKittson, Marshall, Pennington, Polk, Red Lake, Roseau5 hr
Aug 31, 9:55 PM CDTSevere Thunderstorm WatchSPCClay, Clearwater, Kittson, Lake of the Woods, Mahnomen, Marshall and 6 more6 hr
Sep 1, 3:45 PM CDTSevere Thunderstorm WatchSPCChippewa, Cottonwood, Jackson, Kandiyohi, Lac qui Parle, Lincoln and 9 more5 hr
Sep 1, 5:20 PM CDTSevere Thunderstorm WatchSPCBlue Earth, Brown, Dodge, Faribault, Fillmore, Freeborn and 11 more6 hr
Sep 1, 6:15 PM CDTSevere Thunderstorm WatchSPCPine, Washington6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2002Severe Thunderstorm Watches in Wisconsin, 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.