Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 68, NWS Milwaukee, WI

August 3, 2003Rock County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 3, 2003, 4:45 PM CDT for Rock County, Wisconsin. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 3, 2003, 4:45 PM CDT (21:45 UTC)
Expired: Aug 3, 2003, 5:30 PM CDT
In force: 45 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

County Rock County, WI

The radar

The Milwaukee radar (KMKX), 41 km from the middle of the area, began a volume at 21:47 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.8 hours before the alert went out and 179 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: 81 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1225 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

822 
WUUS53 KMKX 032145
SVRMKX
WIC105-032230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
446 PM CDT SUN AUG 3 2003

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ROCK COUNTY IN SOUTH CENTRAL WISCONSIN

* UNTIL 530 PM CDT

* AT 446 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES EAST OF MILTON...MOVING SOUTHWEST AT 5
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MILTON AT 525 PM CDT.
  JANESVILLE AT 530 PM CDT.

HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 60 MILES AN
HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE
UNTIL THE STORM HAS PASSED.

LAT...LON 4251 8888 4269 8917 4283 8890 4285 8882
          4281 8876 4266 8876

$$

DAVIS/HENTZ

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 3, 3:45 PM CDT, 1 hour earlier.

Area forecast discussion, Aug 3, 3:45 PM CDT, 1 hour before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
345 PM CDT SUN AUG 3 2003

DISCUSSION DELAYED DUE TO SEVERE WEATHER.

.MKX...NONE.

Hazardous weather outlook, Aug 3, 11:57 AM CDT, 4 hours 48 minutes before

WIZ046-047-051-052-056>060-062>072-041000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1157 AM CDT SUN AUG 3 2003

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

.DAY ONE...TODAY AND TONIGHT

THERE IS LITTLE OR NO RISK OF SEVERE WEATHER. SCATTERED THUNDERSTORMS
WILL INCREASE IN NUMBER THIS AFTERNOON AND CONTINUE INTO THE EVENING
HOURS. SOME OF THE STRONGER STORMS MAY PRODUCE SMALL HAIL. LOCALLY
HEAVY RAIN WILL ALSO ACCOMPANY THE STRONGER STORMS DUE TO A MOIST
AIRMASS AND SLOW MOVEMENT OF THE STORMS. URBAN AND SMALL STREAM
FLOODING WILL BE POSSIBLE INTO THE EVENING HOURS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A SIMILAR SCENARIO IS EXPECTED AGAIN ON MONDAY. STORM CHANCES
SHOULD THEN GRADUALLY DECREASE AS THE UPPER LOW FINALLY MOVES OFF
TO THE EAST.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER GROUPS WILL PROBABLY NOT BE NEEDED.

TZ

In the hours before

Special weather statement, Aug 3, 2:40 PM CDT, 2 hours 5 minutes before

WIZ046-047-051-056>059-062>065-067>072-032030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
240 PM CDT SUN AUG 3 2003

...SCATTERED THUNDERSTORMS WITH HEAVY RAIN AND HAIL CONTINUE
ACROSS SOUTHERN WISCONSIN...

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE ACROSS
SOUTH CENTRAL AND SOUTHEAST WISCONSIN BETWEEN 230 PM AND 5PM. THE
STORMS ARE SLOW MOVING...AND HAVE A HISTORY OF PRODUCING RAINFALL
RATES OF BETWEEN 1 INCH AND 2 INCHES PER HOUR. THE STRONGEST STORMS
WILL ALSO PRODUCE 1/4 INCH TO 3/4 INCH DIAMETER HAIL.

THE STRONGEST STORMS ARE ALONG A LINE FROM EASTERN FOND DU LAC
COUNTY NEAR MOUNT CALVARY...THROUGH WASHINGTON COUNTY...TO WESTERN
RACINE AND KENOSHA COUNTIES. THE STORMS ARE NEARLY STATIONARY
..OR MOVING SLOWLY TO THE WEST AROUND 5 MPH.

STAY TUNED TO NOAA WEATHER RADIO...AND OTHER MEDIA OUTLETS FOR
UPDATED INFORMATION AND POSSIBLE WARNINGS.

REM

Local storm report, Aug 3, 2:51 PM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
251 PM CDT SUN AUG 03 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0244 PM    1 N WAYNE                 WI   .75 INCH HAIL
08/03/03   WASHINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Aug 3, 2:59 PM CDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
259 PM CDT SUN AUG 03 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0240 PM    WEST BEND                 WI   FLOOD
08/03/03   WASHINGTON                     3 FEET OF WATER ON
                                          ROADWAYS FROM THE NORTH
                                          SIDE OF WEST BEND NORTH
                                          THROUGH  NORTHERN
                                          WASHINGTON COUNTY.
                                          REPORTED BY STORM
                                          SPOTTER.

Local storm report, Aug 3, 3:37 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
337 PM CDT SUN AUG 03 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0326 PM    6 S HARTFORD              WI   1 INCH HAIL
08/03/03   WASHINGTON                     REPORTED BY STORM
                                          SPOTTER.

Local storm report, Aug 3, 4:08 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
408 PM CDT SUN AUG 03 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0358 PM    BURNETT                   WI   .75 INCH HAIL
08/03/03   DODGE                          REPORTED BY STORM
                                          SPOTTER.

Local storm report, Aug 3, 4:12 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
412 PM CDT SUN AUG 03 2003

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0250 PM    UNION GROVE               WI   FLOOD
08/03/03   RACINE                         STREET FLOODING IN THE
                                          CITY OF UNION GROVE.
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 8:31 PM CDT	Severe Thunderstorm Warning	MKX	Columbia	59 min
Aug 2, 9:08 PM CDT	Severe Thunderstorm Warning	MKX	Dodge	67 min
Aug 3, 2:13 PM CDT	Severe Thunderstorm Warning	MKX	Washington	32 min
Aug 3, 2:57 PM CDT	Flash Flood Warning	MKX	Kenosha, Racine	3 hr
Aug 3, 3:05 PM CDT	Severe Thunderstorm Warning	MKX	Dane	25 min
Aug 3, 3:15 PM CDT	Severe Thunderstorm Warning	MKX	Columbia	30 min
Aug 3, 3:23 PM CDT	Severe Thunderstorm Warning	MKX	Washington	37 min
Aug 3, 3:28 PM CDT	Severe Thunderstorm Warning	MKX	Dane	47 min
Aug 3, 3:44 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	61 min
Aug 3, 3:55 PM CDT	Flash Flood Warning	MKX	Jefferson, Waukesha	4 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2003 Every severe thunderstorm warning in 2003

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.