Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 41, NWS La Crosse, WI

July 4, 2003Richland County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jul 4, 2003, 4:38 AM CDT for Richland County, Wisconsin. It was in force for 37 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 4, 2003, 4:38 AM CDT (09:38 UTC)
Expired: Jul 4, 2003, 5:15 AM CDT
In force: 37 min
Issued by: NWS La Crosse, WI
Area: Counties, with a storm outline in the text

County Richland County, WI

The radar

The La Crosse radar (KARX), 87 km from the middle of the area, began a volume at 09:40 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 4, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 9.6 hours before the alert went out and 199 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: 1426 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1629 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

185 
WUUS53 KARX 040938
SVRARX
WIC103-041015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
439 AM CDT FRI JUL 4 2003

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RICHLAND COUNTY IN SOUTHWEST WISCONSIN

* UNTIL 515 AM CDT

* AT 439 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE
  THUNDERSTORM 4 MILES NORTHEAST OF BOAZ...OR ABOUT 4 MILES WEST OF
  RICHLAND CENTER...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM IS EXPECTED TO BE...
  NEAR ITHACA...AND ROCKBRIDGE AT 445 AM CDT...
  NEAR LOYD...AND NEPTUNE AT 450 AM CDT...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR
YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

LAT...LON 4343 9056 4326 9051 4334 8984 4356 8990

$$

KRC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 3:53 AM CDT	Severe Thunderstorm Warning	ARX	Buffalo, La Crosse, Trempealeau	67 min
Jul 4, 4:02 AM CDT	Severe Thunderstorm Warning	ARX	Vernon	43 min
Jul 4, 4:22 AM CDT	Severe Thunderstorm Warning	ARX	Jackson, Monroe	68 min
Jul 4, 4:49 AM CDT	Severe Thunderstorm Warning	ARX	Juneau	56 min
Jul 4, 5:09 AM CDT	Severe Thunderstorm Warning	ARX	Adams	66 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.