Alert archive / Minnesota / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 236

May 8, 200513 counties in Iowa; 25 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2005, 5:30 PM CDT for 13 counties in Iowa; 25 counties in Minnesota. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
May 8, 2005, 5:30 PM CDT (22:30 UTC)
Expired
May 9, 2005, 1:00 AM CDT
In force
8 hr
Issued by
the Storm Prediction Center
All 38 counties

Calhoun County, IA, Emmet County, IA, Franklin County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Webster County, IA, Winnebago County, IA, Wright County, IA, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Jackson County, MN, Kandiyohi County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Waseca County, MN, Watonwan County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 62 km from the middle of the area, began a volume at 22:30 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

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

IssuedProductOfficeCountiesLasted
May 8, 5:34 PM CDTFlash Flood WarningDMXPocahontas4 hr
May 8, 5:40 PM CDTSevere Thunderstorm WarningDMXHumboldt50 min
May 8, 5:45 PM CDTSevere Thunderstorm WarningDMXKossuth45 min
May 8, 5:53 PM CDTSevere Thunderstorm WarningDMXHancock, Wright63 min
May 8, 5:59 PM CDTSevere Thunderstorm WarningFSDCottonwood, Murray33 min
May 8, 6:00 PM CDTFlash Flood WarningDMXKossuth4 hr
May 8, 6:01 PM CDTSevere Thunderstorm WarningDMXWebster44 min
May 8, 6:05 PM CDTSevere Thunderstorm WarningMPXRedwood40 min
May 8, 6:22 PM CDTSevere Thunderstorm WarningDMXWinnebago40 min
May 8, 8:07 PM CDTSevere Thunderstorm WarningMPXAnoka, Carver, Dakota, Hennepin, Ramsey, Scott and 2 more53 min
May 8, 8:12 PM CDTSevere Thunderstorm WarningMPXDouglas, Pope59 min
May 8, 8:33 PM CDTSevere Thunderstorm WarningFSDJackson43 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 60 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 2005-05-08Temperature 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 2005-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1347 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
112 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 7, 7:34 PM CDTMesoscale DiscussionSPCCherokee, Ida, Lyon, Monona, O'Brien, Osceola and 3 more116 min
May 7, 7:55 PM CDTSevere Thunderstorm WatchSPCLyon, Plymouth, Sioux6 hr
May 7, 11:07 PM CDTMesoscale DiscussionSPCDickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux83 min
May 8, 1:10 PM CDTMesoscale DiscussionSPCLyon, Sioux3 hr
May 8, 1:50 PM CDTTornado WatchSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more7 hr
May 8, 2:30 PM CDTSevere Thunderstorm WatchSPCAudubon, Carroll, Crawford, Fremont, Harrison, Mills and 5 more7 hr
May 8, 3:05 PM CDTMesoscale DiscussionSPCBlack Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo and 28 more85 min
May 8, 5:27 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 12 more63 min
May 8, 3:50 PM CDTTornado WatchSPCBecker, Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen and 6 more5 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2005Severe Thunderstorm Watches in Iowa, 2005Every severe thunderstorm watch in 2005

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.