Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 100, NWS Milwaukee, WI

August 27, 2004Kenosha County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 27, 2004, 2:07 AM CDT for Kenosha County, Wisconsin. It was in force for 53 min. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 27, 2004, 2:07 AM CDT (07:07 UTC)
Expired: Aug 27, 2004, 3:00 AM CDT
In force: 53 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

County Kenosha County, WI

The radar

The Milwaukee radar (KMKX), 68 km from the middle of the area, began a volume at 07:10 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.

What was reported inside it

Time	Report	Where	Remark
Aug 27, 2:08 AM CDT	TSTM WND GST 55	2 Ssw Silver Lake, WI
Aug 27, 2:08 AM CDT	TSTM WND GST 55	2 Ssw Silver Lake, WI
Aug 27, 2:20 AM CDT	TSTM WND GST 58	4 S Salem, WI	MEASURED AT THE TREVOR VOLUNTEER FIRE DEPARTMENT WEATHERNET STATION.
Aug 27, 2:20 AM CDT	TSTM WND GST 58	4 S Salem, WI	MEASURED AT THE TREVOR VOLUNTEER FIRE DEPARTMENT WEATHERNET STATION.
Aug 27, 2:20 AM CDT	TSTM WND GST 58	4 S Salem, WI	MEASURED AT THE TREVOR VOLUNTEER FIRE DEPARTMENT WEATHERNET STATION.
Aug 27, 2:20 AM CDT	TSTM WND GST 70	Salem, WI	WIDESPREAD TREE DAMAGE ACROSS MOST OF KENOSHA COUNTY...ESPECIALLY NEAR SALEM.
Aug 27, 2:20 AM CDT	TSTM WND GST 70	Salem, WI	WIDESPREAD TREE DAMAGE ACROSS MOST OF KENOSHA COUNTY...ESPECIALLY NEAR SALEM.
Aug 27, 2:20 AM CDT	TSTM WND GST 70	Salem, WI	WIDESPREAD TREE DAMAGE ACROSS MOST OF KENOSHA COUNTY...ESPECIALLY NEAR SALEM.
Aug 27, 2:28 AM CDT	TSTM WND GST 54	Kenosha, WI
Aug 27, 2:28 AM CDT	TSTM WND GST 54	Kenosha, WI

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 13 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 27, 1:25 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.1 hours before the alert went out and 210 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: 2194 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1006 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMKX 270707
SVRMKX
WIC059-270800-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
206 AM CDT FRI AUG 27 2004

THE NATIONAL WEATHER SERVICE IN MILWAUKEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENOSHA COUNTY IN SOUTHEAST WISCONSIN

* UNTIL 300 AM CDT

* AT 202 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR TWIN LAKES...AND MOVING
  EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KENOSHA... AND PLEASANT PRAIRIE AROUND 225 AM CDT...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4259 8830 4241 8826 4261 8726 4277 8733

$$

DAVIS

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 26, 2:45 PM CDT, 11 hours 22 minutes earlier.

Area forecast discussion, Aug 26, 2:45 PM CDT, 11 hours 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
245 PM CDT THU AUG 26 2004

.DISCUSSION...FORECAST FOCUS IS ON TSTM CHCS AND INTENSITY TNGT...
THEN ON TIMING OF CDFNT AND RN CHC EXIT FM CWA TMRW OR SAT.

IN THE SHORT TERM...STLT WV LOOP CONTINUES TO SHW MAIN JET AND CNDN
VORT CNTR LIFTING NWD THRU MN AND DAKS. LO CLDS HV BEEN SLOW TO LV
PARTS OF CWA TDA...LIMITING OR DELAYING DE-STABILIZATION. CNVTV
ACTVTY ALG BDRY OVR NW IA HAS BEEN SLOW TO GET GOING. SO BARRING NEW
DVLPT RIGHT OVER US...LOOKS LIKE IT WL BE A LTL WHILE BEFORE ANY REAL
STG STUFF SPRDS INTO CWA. WL DLA HIER POPS UNTIL LATER AND FOLLOW SPC
GUID ON POTENTIAL SEVERITY.

OTR MAIN CHG IN FCST SCENARIO INVOLVES MOVMT OF CDFNT AND ASSOCD
PCPN. ETA IS NOT PUSHING FNT OUT OF THE STATE TIL TMRW NGT...GFS A
LTL SOONER. THIS IS REASONABLE IN LIGHT OF CRNT PSN AND UPR FEATURES
STILL LIFTING NWD AS PREV MENTIONED. BOT LINE IS WE NEED TO KP PCPN
CHC IN THE FCST AT LEAST INTO TMRW NGT.

STILL HOPING FOR DECENT WEEKEND WITH FNT FINALLY EXITING AREA...BUT
MAY HV TO HOLD ON TO CLDS/PCPN CHC ERLY.

&&

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

NJ

Hazardous weather outlook, Aug 26, 4:50 AM CDT, 21 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
450 AM CDT THU AUG 26 2004

WIZ046-047-051-052-056>060-062>072-271000-
COLUMBIA-DANE-DODGE-FOND DU LAC-GREEN-GREEN LAKE-IOWA-JEFFERSON-
KENOSHA-LAFAYETTE-MARQUETTE-MILWAUKEE-OZAUKEE-RACINE-ROCK-SAUK-
SHEBOYGAN-WALWORTH-WASHINGTON-WAUKESHA-

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL AND SOUTHEAST
WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...MAINLY TONIGHT.
THE TIME PERIOD OF GREATEST CONCERN IS FROM ABOUT 10 PM TO 4 AM WITH
THE PRIMARY THREAT HAIL AND HIGH WINDS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

DAVIS

In the hours before

Local storm report, Aug 27, 12:37 AM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1237 AM CDT FRI AUG 27 2004

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

1230 AM     TSTM WND DMG     DEFOREST                43.25N 89.35W
08/27/2004                   DANE               WI   TRAINED SPOTTER

            TREES REPORTED DOWN IN DE FOREST.

&&

DAVIS/BORGHOFF

Local storm report, Aug 27, 12:48 AM CDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1248 AM CDT FRI AUG 27 2004

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

1205 AM     HEAVY RAIN       1 NE BARABOO            43.48N 89.73W
08/27/2004  1.34 INCH        SAUK               WI   AMATEUR RADIO

            1.34 INCHES OF RAIN WAS REPORTED BETWEEN 1105 PM AND 1205
            AM...WITH A PEAK HOURLY RAIN RATE OF 4.96 INCHES AT 1148
            PM.

1215 AM     HEAVY RAIN       1 E REEDSBURG           43.53N 89.98W
08/27/2004  1.61 INCH        SAUK               WI   AMATEUR RADIO

            1.61 INCHES OF RAIN WAS REPORTED BETWEEN 1115 PM AND 1215
            AM...WITH PEAK HOURLY RAINFALL RATES OF 5.35 INCHES AT
            1118 PM.

&&

DAVIS/BORGHOFF

Local storm report, Aug 27, 12:55 AM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1255 AM CDT FRI AUG 27 2004

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

1250 AM     TSTM WND DMG     3 NW FOX LAKE           43.60N 88.95W
08/27/2004                   DODGE              WI   LAW ENFORCEMENT

            TWO LARGE TREES WERE REPORTED DOWN ON A HOUSE.

1210 AM     TSTM WND DMG     PARDEEVILLE             43.53N 89.30W
08/27/2004                   COLUMBIA           WI   AMATEUR RADIO

            ONE FOOT DIAMETER TREES UPROOTED WITH 3 TO 6 BROKEN.

&&

DAVIS/BORGHOFF

Local storm report, Aug 27, 12:59 AM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1259 AM CDT FRI AUG 27 2004

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

1250 AM     TSTM WND GST     2 W JANESVILLE          42.68N 89.06W
08/27/2004  50 MPH           ROCK               WI   AMATEUR RADIO

&&

DAVIS/BORGHOFF

Local storm report, Aug 27, 1:03 AM CDT, 1 hour 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
103 AM CDT FRI AUG 27 2004

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

1245 AM     TSTM WND DMG     BROWNTOWN               42.58N 89.79W
08/27/2004                   GREEN              WI   TRAINED SPOTTER

            TREES DOWN.

&&

DAVIS/BORGHOFF

Local storm report, Aug 27, 1:14 AM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
114 AM CDT FRI AUG 27 2004

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

0107 AM     TSTM WND DMG     FOND DU LAC             43.77N 88.45W
08/27/2004                   FOND DU LAC        WI   LAW ENFORCEMENT

            TREES AND POWER LINES REPORTED DOWN.

0105 AM     TSTM WND DMG     RIPON                   43.85N 88.84W
08/27/2004                   FOND DU LAC        WI   LAW ENFORCEMENT

            LARGE TREES REPORTED DOWN IN THE RIPON AREA.

&&

DAVIS/BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 11:22 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Lafayette	53 min
Aug 26, 11:46 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	44 min
Aug 27, 12:26 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Fond du Lac, Green Lake	64 min
Aug 27, 12:42 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson, Rock, Walworth	63 min
Aug 27, 12:56 AM CDT	Special Marine Warning	MKX		3 hr
Aug 27, 12:56 AM CDT	Special Marine Warning	MKX		3 hr
Aug 27, 1:09 AM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	66 min
Aug 27, 1:48 AM CDT	Severe Thunderstorm Warning	MKX	Walworth	42 min
Aug 27, 2:22 AM CDT	Severe Thunderstorm Warning	MKX	Racine	38 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2004 Every severe thunderstorm warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.