Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 12, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Sep 9, 1991, 4:26 PM CDT for La Crosse County, Wisconsin. It was in force for 39 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 9, 1991, 4:26 PM CDT (21:26 UTC)
- Expired
- Sep 9, 1991, 5:05 PM CDT
- In force
- 39 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
County La Crosse County, WI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 9, 4:30 PM CDT | Hail 0.75 | La Crosse, WI | |
| Sep 9, 4:45 PM CDT | Hail 1 | La Crosse, WI |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.4 hours before the alert went out and 249 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.
- Mixed-layer CAPE
- 649 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 824 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Sep 9, 3:30 PM CDT, 56 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Special weather statement, Sep 9, 3:37 PM CDT, 49 minutes before
WIZ010-014-092130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 337 PM CDT MON SEP 9 1991 AT 335 PM...RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM LA CROSSE THROUGH EXTREME SOUTHEAST MINNESOTA...INTO EXTREME NORTHEAST IOWA. ANOTHER THUNDERSTORM WAS LOCATED NEAR BLACK RIVER FALLS ...OR 40 MILES NORTHEAST OF LA CROSSE. ALL THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR AND WILL PRODUCE SOME BRIEF HEAVY RAIN.^..GUSTY WINDS...AND DANGEROUS LIGHTNING. IF A THUNDERSTORM APPROACHES YOUR AREA...MOVE INDOORS. GET OFF AREA LAKES AND RIVERS AND HEAD FOR SHELTER. REMEMBER...LIGHTNING IS A STORMS WORST KILLER. INGRAM
Special weather statement, Sep 9, 3:40 PM CDT, 46 minutes before
WIZ010-014-092130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 340 PM CDT MON SEP 9 1991 AT 335 PM...RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM LA CROSSE THROUGH EXTREME SOUTHEAST MINNESOTA...INTO EXTREME NORTHEAST IOWA. ANOTHER THUNDERSTORM WAS LOCATED NEAR BLACK RIVER FALLS ...OR 40 MILES NORTHEAST OF LA CROSSE. PEA SIZED HAIL WAS REPORTED AT CALEDONIA MINNESOTA AT 335 PM. ALL THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR AND WILL PRODUCE SOME BRIEF HEAVY RAIN...GUSTY WINDS...AND DANGEROUS LIGHTNING...AND SMALL HAIL. IF A THUNDERSTORM APPROACHES YOUR AREA...MOVE INDOORS. GET OFF AREA LAKES AND RIVERS AND HEAD FOR SHELTER. REMEMBER...LIGHTNING IS A STORMS WORST KILLER. INGRAM
Special weather statement, Sep 9, 4:18 PM CDT, 8 minutes before
WIZ010-014-092220- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 417 PM CDT MON SEP 9 1991 AT 415 PM...RADAR INDICATED TWO BANDS OF SHOWERS AND THUNDERSTORMS IN WEST CENTRAL WISCONSIN. THE NORTHERN BAND EXTENDED FROM WHITEHALL...40 MILES NORTH OF LA CROSSE...THEN TO THE NORTHEAST INTO CENTRAL WISCONSIN. THE SECOND BAND EXTENDED FROM NEAR MARSHFIELD TO LA CROSSE THEN INTO EXTREME SOUTHEAST MINNESOTA AND NORTHEAST IOWA. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR AND WILL PRODUCE SOME VERY HEAVY RAIN...GUSTY WINDS...DANGEROUS LIGHTNING...AND SMALL HAIL. IF A THUNDERSTORM APPROACHES YOUR AREA...MOVE INDOORS. GET OFF AREA LAKES AND RIVERS AND HEAD FOR SHELTER. STAY INDOORS UNTIL THE STORM PASSES. REMEMBER...LIGHTNING IS A STORMS WORST KILLER. INGRAM
Special weather statement, Sep 9, 4:26 PM CDT, 0 minutes before
MNZ019-092215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROCHESTER MN 415 PM CDT MON SEP 9 1991 ...A LINE OF STRONG THUNDERSTORMS CONTINUE ACROSS SOUTHEAST MINNESOTA INTO WEST CENTRAL WISCONSIN... AT 405 PM RADAR INDICATED A LINE OF THUNDERSTORMS SOME WITH INTENSE RAIN AND SMALL HAIL FROM 30 MILES SOUTHWEST OF LA CROSSE TO 50 MILES NORTHEAST OF LA CROSSE. OTHER THUNDERSTORMS WERE IN CENTRAL IOWA NEAR WATERLOO AND IN WESTERN WISONSIN NEAR ARCADIA. A NEW THUNDERSTORM HAD ALSO DEVELOPED 30 MILES NORTHWEST OF ROCHESTER NEAR KENYON. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MPH. NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS. DANGEROUS LIGHTNING...POSSIBLE HAIL...AvND VERY HEAVY RAIN CAN BE EXPECTED. PERSONS IN FILMORE COUNTY OF EXTREME SOUTHEAST MINNESOTA AND VERNON...LA CROSSE...AND MONROE COUNTIES OF WEST CENTRAL WISCONSIN SHOULD REMAIN ALERT AS THESE THUNDERSTORMS APPROACH YOUR AREA. KRUSE
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 6:35 PM CDT | Severe Thunderstorm Warning | ARX | Crawford | 55 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.