Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 59, NWS Twin Cities, MN

July 27, 1993Eau Claire County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 1993, 5:53 PM CDT for Eau Claire County, Wisconsin. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1993, 5:53 PM CDT (22:53 UTC)
Expired
Jul 27, 1993, 6:45 PM CDT
In force
52 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Eau Claire County, WI

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.9 hours before the alert went out and 183 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 12:00Z on 1993-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1993-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
895 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
237 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.

000 
TTAA00 KMSP 272254
SVRMSP
WIC035-272345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
553 PM CDT TUE JUL 27 1993
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  645 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL WISCONSIN
 
   ...EAU CLAIRE COUNTY
 
AT 552 PM CDT WEATHER RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 20
MILES SOUTHWEST OF EAU CLAIRE...SOUTH OF ROCK FALLS. THIS STORM WAS
MOVING EAST AT 20 MILES AN HOUR AND WILL MOVE ACROSS EAU CLAIRE
COUNTY...NEAR OR JUST SOUTH OF EAU CLAIRE BETWEEN 600 PM AND 630 PM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM.  PEOPLE IN MOBILE HOMES SHOULD GO
TO A STORM SHELTER.
EDWARDS

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, Jul 27, 5:16 PM CDT, 37 minutes before
WIZ003-006-272315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
513 PM CDT TUE JUL 27 1993

AT 510 PM A STRONG THUNDERSTORM WAS LOCATED OVER PEPIN COUNTY NEAR THE
TOWN OF DURAND...WHICH IS 25 MILES SOUTHWEST OF EAU CLAIRE.

THE STORM WAS MOVING TO THE NORTHEAST AT 30 MILES AN HOUR...AND WILL MOVINTO SOUTHERN DUNN COUNTY SHORTLY.  TOWNS IN SOUTHERN DUNN COUNTY WHICH
THIS STORM IS APPROACHING INCLUDE ROCK FALLS AND DOWNSVILLET.

IF YOU ARE IN PEPIN COUNTY OR SOUTHERN DUNN COUNTY EXPECT HEAVY RAIN...
SMALL HAIL...AND GUSTY WINDS FROM THIS STORM.

DRB/KME
Special weather statement, Jul 27, 5:37 PM CDT, 16 minutes before
WIZ003-006-272345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
536 PM CDT TUE JUL 27 1993

AT 530 PM CDT...A STRONG THUNDERSTORM CONTINUED OVER PEPIN COUNTY IN
WEST CENTRAL WISCONSIN NEAR THE TOWN OF DURAND...WHICH IS ABOUT 25 MILES
SOUTHWEST OF EAU CLAIRE. THE STORM APPEARED TO HAVE RECENTLY SLOWED IN
SPEED TO THE NORTHEAST AT ABOUT 10 TO 15 MILES AN HOUR.

TOWNS IN SOUTHERN DUNN COUNTY WHICH WOULD BE IN THE PATH OF THE STRONG
THUNDERSTORM INCLUDE ROCK FALLS AND DOWNSVILLE.

PERSONS IN PEPIN COUNTY AS WELL AS SOUTHERN DUNN COUNTY SHOULD EXPECT
HEAVY RAINS...POSSIBLE HAIL...AND GUSTY WINDS AS THIS STORM PASSES
THROUGH.
KME

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1993Every severe thunderstorm warning in 1993

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.