Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 35, NWS La Crosse, WI

July 4, 2003Fillmore County, Olmsted County, Minnesota; Fayette County, Winneshiek County, Iowa

NWS La Crosse, WI issued this severe thunderstorm warning at Jul 4, 2003, 2:49 AM CDT for Fillmore County, Olmsted County, Minnesota; Fayette County, Winneshiek County, Iowa. It was in force for 56 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, 2:49 AM CDT (07:49 UTC)
Expired
Jul 4, 2003, 3:45 AM CDT
In force
56 min
Issued by
NWS La Crosse, WI
Area
Counties, with a storm outline in the text

Counties Fayette County, IA, Winneshiek County, IA, Fillmore County, MN, Olmsted County, MN

The radar

The La Crosse radar (KARX), 85 km from the middle of the area, began a volume at 08:00 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.

IssuedProductOfficeLasted
Jul 4, 1:15 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.8 hours before the alert went out and 176 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2003-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 151 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2003-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
151 J/kg
Mixed-layer CIN
-708 J/kg
Mixed-layer LCL
1300 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

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

720 
WUUS53 KARX 040749
SVRARX
IAC065-191-MNC045-109-040845-

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

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WINNESHIEK COUNTY IN NORTHEAST IOWA
  FAYETTE COUNTY IN NORTHEAST IOWA
  OLMSTED COUNTY IN SOUTHEAST MINNESOTA
  FILLMORE COUNTY IN SOUTHEAST MINNESOTA

* UNTIL 345 AM CDT

* AT 249 AM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A LINE OF
  SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS FROM 15 MILES
  NORTHWEST OF DODGE CENTER TO 16 MILES SOUTH OF CHARLES CITY...
  MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORMS ARE EXPECTED TO BE...
  NEAR OSTRANDER AT 300 AM CDT...
  NEAR YORK...AND SPRING VALLEY AT 305 AM CDT...
  NEAR WASHINGTON...AND GREENLEAFTON AT 310 AM CDT...
  NEAR WYKOFF...AND WAUCOMA AT 315 AM CDT...
  NEAR ST. LUCAS...AND SPILLVILLE AT 320 AM CDT...

DAMAGING WIND GUSTS ARE THE MAIN THREAT FROM THESE STORMS. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

LAT...LON 4417 9270 4383 9243 4352 9244 4353 9207
          4293 9205 4292 9164 4341 9164 4410 9225

$$

KRC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 1:52 AM CDTSevere Thunderstorm WarningARXMower68 min
Jul 4, 2:27 AM CDTSevere Thunderstorm WarningARXDodge63 min
Jul 4, 3:20 AM CDTSevere Thunderstorm WarningARXHouston, Wabasha, Winona55 min
Jul 4, 2:17 AM CDTSevere Thunderstorm WarningARXChickasaw, Howard58 min
Jul 4, 3:28 AM CDTSevere Thunderstorm WarningARXAllamakee, Clayton47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2003Severe Thunderstorm Warnings in Iowa, 2003Every 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.