Alert archive / Wisconsin / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 659

August 7, 200022 counties in Iowa; 10 counties in Minnesota; 24 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2000, 11:15 PM CDT for 22 counties in Iowa; 10 counties in Minnesota; 24 counties in Wisconsin. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 7, 2000, 11:15 PM CDT (04:15 UTC)
Expired
Aug 8, 2000, 5:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 56 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hardin County, IA, Howard County, IA, Jackson County, IA, Jones County, IA, Mitchell County, IA, Winneshiek County, IA, Worth County, IA, Dodge County, MN, Fillmore County, MN, Goodhue County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Steele County, MN, Wabasha County, MN, Washington County, MN, Winona County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Lincoln County, WI, Marathon County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Richland County, WI, Rusk County, WI, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 75 km from the middle of the area, began a volume at 04:16 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

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

IssuedProductOfficeCountiesLasted
Aug 8, 12:05 AM CDTSevere Thunderstorm WarningDMXWorth40 min
Aug 8, 12:17 AM CDTSevere Thunderstorm WarningARXBuffalo28 min
Aug 8, 12:18 AM CDTSevere Thunderstorm WarningARXMitchell57 min
Aug 8, 12:31 AM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix44 min
Aug 8, 12:52 AM CDTSevere Thunderstorm WarningARXClark38 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.3 hours before the alert went out and 195 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 00:00Z on 2000-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1134 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 00:00Z on 2000-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
1134 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1449 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
258 m²/s²
Significant tornado parameter
0.3
Supercell composite
6.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 4:15 PM CDTSevere Thunderstorm WatchSPCAshland, Bayfield, Brown, Calumet, Chippewa, Clark and 22 more6 hr

Nearby

Severe Thunderstorm Watches in Wisconsin, 2000Severe Thunderstorm Watches in Iowa, 2000Severe Thunderstorm Watches in Minnesota, 2000Every severe thunderstorm watch in 2000

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.