Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 32, NWS La Crosse, WI

September 13, 1994Vernon County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Sep 13, 1994, 8:10 PM CDT for Vernon County, Wisconsin. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: Sep 13, 1994, 8:10 PM CDT (01:10 UTC)
Expired: Sep 13, 1994, 8:45 PM CDT
In force: 35 min
Issued by: NWS La Crosse, WI
Area: Whole counties

County Vernon County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.2 hours before the alert went out and 261 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: 334 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: -108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 13, 6:18 PM CDT, 1 hour 52 minutes before

MNZALL-140015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCHESTER MN
618 PM CDT TUE SEP 13 1994

...THUNDERSTORMS CONTINUE TO DEVELOP OVER SOUTHERN MINNESOTA...

AT 615 PM...RADAR INDICATED STRONG THUNDERSTORMS OVER SOUTHERN
MINNESOTA. THE STRONGEST STORMS WERE LOCATED JUST NORTH OF
NORTHFIELD...AND IN THE NEW RICHLAND AREA. THESE STORMS WERE MOVING EAST
SOUTHEAST AT 35 MPH AND WILL BE AFFECTING THE CITY OF CANNON
FALLS BY 630 PM...AND BLOOMING PRAIRIE BY 700 PM.

THESE STORMS ARE CAPABLE OF PRODUCING HEAVY RAIN...DEADLY
LIGHTNING...AND SMALL HAIL. IF IN THE PATH OF THESE STORMS...TAKE
SHELTER UNTIL THEY PASS.

TEAL

Special weather statement, Sep 13, 6:20 PM CDT, 1 hour 50 minutes before

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Local storm report, Sep 13, 7:27 PM CDT, 43 minutes before

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Local storm report, Sep 13, 7:30 PM CDT, 40 minutes before

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Special weather statement, Sep 13, 7:45 PM CDT, 25 minutes before

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Special weather statement, Sep 13, 7:50 PM CDT, 20 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 14, 4:51 AM CDT	Flash Flood Warning	ARX	Trempealeau	3 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1994 Every severe thunderstorm warning in 1994

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.