Alert archive / Minnesota / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 772

September 5, 200539 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at Sep 5, 2005, 10:20 PM CDT for 39 counties in Minnesota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Sep 5, 2005, 10:20 PM CDT (03:20 UTC)
Expired
Sep 6, 2005, 3:20 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 39 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Kandiyohi County, MN, Le Sueur County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Swift County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 03:20 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

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

IssuedProductOfficeCountiesLasted
Sep 5, 10:43 PM CDTSevere Thunderstorm WarningMPXYellow Medicine62 min
Sep 5, 10:58 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Renville62 min
Sep 5, 11:12 PM CDTSevere Thunderstorm WarningMPXMeeker63 min
Sep 5, 11:49 PM CDTSevere Thunderstorm WarningFSDMurray, Pipestone, Rock41 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

Aberdeen, SD (KABR), launched 00:00Z, 3.3 hours before the alert went out and 294 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, Aberdeen, SD at 00:00Z on 2005-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 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, Aberdeen, SD at 00:00Z on 2005-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.19395878Sfc1 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
239 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1970 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
-14 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
Sep 5, 7:13 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Clay, Clearwater, Grant and 16 more2 hr
Sep 5, 8:30 PM CDTSevere Thunderstorm WatchSPCAitkin, Carlton, Cass, Crow Wing, Douglas, Hubbard and 9 more6 hr
Sep 5, 10:10 PM CDTMesoscale DiscussionSPCAnoka, Benton, Brown, Carver, Chisago, Hennepin and 13 more65 min
Sep 5, 11:18 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 44 more87 min
Sep 5, 11:40 PM CDTSevere Thunderstorm WatchSPCJackson, Nobles, Rock4 hr
Sep 6, 2:52 AM CDTMesoscale DiscussionSPCFillmore, Freeborn, Mower, Olmsted, Wabasha83 min

Nearby

Severe Thunderstorm Watches in Minnesota, 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.