Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 49, NWS Milwaukee, WI

July 31, 2003Fond du Lac County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 31, 2003, 2:31 PM CDT for Fond du Lac County, Wisconsin. It was in force for 74 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: Jul 31, 2003, 2:31 PM CDT (19:31 UTC)
Expired: Jul 31, 2003, 3:45 PM CDT
In force: 74 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

County Fond du Lac County, WI

The radar

The Green Bay radar (KGRB), 88 km from the middle of the area, began a volume at 19:33 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 31, 12:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.5 hours before the alert went out and 86 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: 502 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 856 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 135 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.

169 
WUUS53 KMKX 311931
SVRMKX
WIC039-312045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
231 PM CDT THU JUL 31 2003

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FOND DU LAC COUNTY IN EAST CENTRAL WISCONSIN

* UNTIL 345 PM CDT

* AT 231 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR BRANDON...OR ABOUT 7 MILES SOUTHEAST OF
  RIPON...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OAKFIELD AT 255 PM CDT.
  NORTH FOND DU LAC AT 300 PM CDT.
  FOND DU LAC AT 310 PM CDT.
  EDEN AT 320 PM CDT.

HAIL UP TO 3/4 OF AN INCH IN DIAMETER AND WINDS GREATER THAN 60 MILES
AN HOUR ARE EXPECTED FROM THIS STORM. IF YOU ARE IN THE STORMS
PATH...SEEK SHELTER INDOORS.

THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL...WHICH MAY FLOOD
LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS
AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT.

LAT...LON 4387 8888 4368 8887 4363 8818 4391 8819

$$

DAVIS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 12:44 PM CDT	Severe Thunderstorm Warning	MKX	Marquette	76 min
Jul 31, 1:26 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Sauk	79 min
Jul 31, 2:05 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	55 min
Jul 31, 2:36 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee	54 min
Jul 31, 2:58 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green	77 min
Jul 31, 3:58 PM CDT	Severe Thunderstorm Warning	MKX	Rock	62 min
Jul 31, 4:18 PM CDT	Severe Thunderstorm Warning	MKX	Dane	42 min
Jul 31, 4:20 PM CDT	Special Marine Warning	MKX		85 min
Jul 31, 4:20 PM CDT	Special Marine Warning	MKX		85 min
Jul 31, 5:40 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Waukesha	50 min

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.