Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 188, NWS Milwaukee, WI

August 25, 2006Kenosha County, Racine County, Walworth County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 25, 2006, 2:39 PM CDT for Kenosha County, Racine County, Walworth County, Wisconsin. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 25, 2006, 2:39 PM CDT (19:39 UTC)
Expired: Aug 25, 2006, 3:00 PM CDT
In force: 21 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

Counties Kenosha County, WI, Racine County, WI, Walworth County, WI

The radar

The Milwaukee radar (KMKX), 53 km from the middle of the area, began a volume at 19:39 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.7 hours before the alert went out and 203 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 88 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 611 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 25, 2:58 AM CDT, 11 hours 41 minutes earlier.

Area forecast discussion, Aug 25, 2:58 AM CDT, 11 hours 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
258 AM CDT FRI AUG 25 2006

.DISCUSSION...FORECAST FOCUS IS ON CONVECTION TODAY AND
TONIGHT...THEN ON QUIET WEATHER THROUGH WEEKEND.

ATMOSPHERE IS EXPECTED TO REMAIN MOIST AND UNSTABLE TODAY INTO THE
EVENING HOURS. CAPES ARE EXPECTED TO BE AROUND 3K. STRONG MOISTURE
CONVERGENCE FORECAST AHEAD OF CDFNT EXPECTED TO BE APPROACHING
WESTERN WISCONSIN BY AROUND 18Z. PRECIPITABLE WATER CLOSE TO 2
INCHES. MODELS INDICATE H700 OMEGA OVERLAYING STRONG QCONVERGENCE
THIS AFTERNOON THROUGH EVENING HOURS. IN ADDITION...A STRONG
THETA-E RIDGE...QPV AND ISENT LIFT ARE EXPECTED. THE FRONT IS NOT
FORECAST TO EXIT EASTERN CWA UNTIL AFTER 06Z...THEN MID LEVELS DRY
OUT QUICKLY AND THE DYNAMICS DIMINISH. EXPECT CONVECTION TO
DIMINISH EARLY THIS MORNING...THEN REDEVELOP THIS AFTERNOON AS THE
FRONT APPROACHES DURING MAX HEATING. CONVECTION SHOULD
CONTINUE ALONG AND AHEAD OF THE FRONT...ENDING FROM THE WEST EARLY
IN THE EVENING...AND FINALLY ENDING IN THE EAST AFTER MIDNIGHT.

DRY HIGH PRESSURE BUILDS ACROSS WESTERN GREAT LAKES REGION
SATURDAY...AND LINGERS THROUGH AT LEAST WEDNESDAY. A PROLONGED
PERIOD OF QUIET WEATHER IS EXPECTED WITH TEMPERATURES NEAR
SEASONAL NORMALS.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

Hazardous weather outlook, Aug 25, 11:55 AM CDT, 2 hours 44 minutes before

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In the hours before

Local storm report, Aug 25, 9:34 AM CDT, 5 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
934 AM CDT FRI AUG 25 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0927 AM     HAIL             LOGANVILLE              43.44N 90.04W
08/25/2006  E0.75 INCH       SAUK               WI   TRAINED SPOTTER

            WIND GUST TO 40 MPH.

&&

GD

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 25, 5:20 AM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	31 min
Aug 25, 6:51 AM CDT	Special Marine Warning	MKX		84 min
Aug 25, 7:28 AM CDT	Special Marine Warning	MKX		92 min
Aug 25, 8:47 AM CDT	Severe Thunderstorm Warning	MKX	Sauk	58 min
Aug 25, 9:43 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Sauk	77 min
Aug 25, 10:32 AM CDT	Severe Thunderstorm Warning	MKX	Jefferson	43 min
Aug 25, 11:00 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson, Rock	42 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2006 Every severe thunderstorm warning in 2006

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.