Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 78, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 9, 1993, 4:08 AM CDT for Pepin County, Wisconsin. It was in force for 52 min.
The area
The counties it named.
The facts
- Issued
- Aug 9, 1993, 4:08 AM CDT (09:08 UTC)
- Expired
- Aug 9, 1993, 5:00 AM CDT
- In force
- 52 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Pepin County, WI
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 9.1 hours before the alert went out and 122 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
- 791 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSP 090911 SVRMSP WIC091-091000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 408 AM CDT MON AUG 9 1993 THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL WISCONSIN ...PEPIN COUNTY AT 400 AM...A SEVERE THUNDERSTORM WAS DETECTED BY RADAR NEAR PLUM CITY O .15 MILES SOUTHWEST OF MENOMONIE. THIS THUNDERSTORM HAS A HISTORY OF LARGE HAIL. THIS STORM WAS MOVING TO HEAST AT 20 MPH. SOME OF THE TOWNS IN THE PATH OF THIS STORM ARE...ARKANS DURAND. 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. RJN/REC
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, Aug 8, 11:40 PM CDT, 4 hours 28 minutes before
WIZ003-006-MNZALL-090545- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 1140 PM CDT SUN AUG 8 1993 ...STRONG THUNDERSTORMS ENTER TWIN CITIES METRO AREA... STRONG THUNDERSTORMS HAD ENTERED THE WESTERN SUBURBS OF THE GREATER TWIN CITIES METRO AREA. AT 1130 PM...THE STRONGEST OF THESE EXTENDED FROM NEAR LAKE WACONIA TO JORDAN...ABOUT 30 MILES WEST THROUGH SOUTHWEST OF DOWNTOWN MINNEAPOLIS. ANOTHER STRONG STORM WAS JUST NORTHWEST OF MINNEAPOLIS FROM NEAR BUFFALO TO DELANO. THESE STORMS ARE CAPABLE OF PRODUCING FREQUENT DEADLY LIGHTNING...SMALL HAIL... GUSTY WINDS TO ABOUT 45 MPH...AND VERY HEAVY RAINFALL. PERSONS ENGAGED IN OUTDOOR ACTIVITIES...SUCH AS BOATING ON AREA LAKES...SHOULD BE READY TO SEEK SAFE SHELTER. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. THESE STORMS ARE JUST REACHING LAKE MINNETONKA AND BOATERS SHOULD HEAD FOR SHORE IMMEDIATELY. OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING FROM WEST CENTRAL THROUGH CENTRAL AND EAST CENTRAL MINNESOTA. THEY WERE MAINLY WEST OF A LINE FROM AITKIN TO STILLWATER TO NEW PRAGUE. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. DLK
Special weather statement, Aug 8, 11:43 PM CDT, 4 hours 25 minutes before
WIZ003-006-MNZALL-090545- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 1140 PM CDT SUN AUG 8 1993 ...STRONG THUNDERSTORMS ENTER TWIN CITIES METRO AREA... STRONG THUNDERSTORMS HAD ENTERED THE WESTERN SUBURBS OF THE GREATER TWIN CITIES METRO AREA. AT 1130 PM...THE STRONGEST OF THESE EXTENDED FROM NEAR LAKE WACONIA TO JORDAN...ABOUT 30 MILES WEST THROUGH SOUTHWEST OF DOWNTOWN MINNEAPOLIS. ANOTHER STRONG STORM WAS JUST NORTHWEST OF MINNEAPOLIS FROM NEAR BUFFALO TO DELANO. THESE STORMS ARE CAPABLE OF PRODUCING FREQUENT DEADLY LIGHTNING...SMALL HAIL... GUSTY WINDS TO ABOUT 45 MPH...AND VERY HEAVY RAINFALL. PERSONS ENGAGED IN OUTDOOR ACTIVITIES...SUCH AS BOATING ON AREA LAKES...SHOULD BE READY TO SEEK SAFE SHELTER. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. THESE STORMS ARE JUST REACHING LAKE MINNETONKA AND BOATERS SHOULD HEAD FOR SHORE IMMEDIATELY. OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING FROM WEST CEYNTRAL THROUGH CENTRAL AND EAST CENTRAL MINNESOTA. THEY WERE MAINLY WEST OF A LINE FROM AITKIN TO STILLWATER TO NEW PRAGUE. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. DLK
Special weather statement, Aug 9, 12:35 AM CDT, 3 hours 33 minutes before
WIZ003-006-MNZALL-090630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 1235 AM CDT MON AUG 9 1993 ...STRONG THUNDERSTORMS MOVING THROUGH TWIN CITIES METRO AREA... STRONG THUNDERSTORMS WERE MOVING THROUGH THE TWIN CITIES METRO AREA AT 1230 AM. THE LEADING EDGE OF THESE THUNDERSTORMS EXTENDED FROM ELK RIVER...JUST NORTHWEST OF THE TWIN CITIES...THROUGH THE INTERNATIONAL AIRPORT AT MINNEAPOLIS...TO ROSEMOUNT...JUST SOUTH OF THE TWIN CITIES. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...THEY ARE STILL CAPABLE OF PRODUCING FREQUENT DEADLY LIGHTNING...SMALL HAIL... AND STRONG GUSTY WINDS...AS WELL AS VERY HEAVY RAINFALL. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SUCH AS BOATING SHOULD SEEK SAFE SHELTER. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. THESE STORMS SHOULD BEGIN MOVING INT0 WESTERN WISCONSIN BY ABOUT 130 AM. SCATTERED THUNDERSHOWERS WERE ALSO OCCURRING OVER THE SOUTHERN TWO-THIRDS OF MINNESOTA AND EXTREME WESTERN WISCONSIN. THEY WERE MAINLY LOCATED TO THE WEST OF A LINE FROM GRAND RAPIDS MINNESOTA TO MOOSE LAKE TO PLUM CITY WISCONSIN TO ROCHESTER MINNESOTA. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. DLK
Special weather statement, Aug 9, 12:36 AM CDT, 3 hours 32 minutes before
WIZ003-006-MNZALL-090630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 1235 AM CDT MON AUG 9 1993 ...STRONG THUNDERSTORMS MOVING THROUGH TWIN CITIES METRO AREA... STRONG THUNDERSTORMS WERE MOVING THROUGH THE TWIN CITIES METRO AREA AT 1230 AM. THE LEADING EDGE OF THESE THUNDERSTORMS EXTENDED FROM ELK RIVER...JUST NORTHWEST OF THE TWIN CITIES...THROUGH THE INTERNATIONAL AIRPORT AT MINNEAPOLIS...TO ROSEMOUNT...JUST SOUTH OF THE TWIN CITIES. WHILE NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...THEY ARE STILL CAPABLE OF PRODUCING FREQUENT DEADLY LIGHTNING...SMALL HAIL... AND STRONG GUSTY WINDS...AS WELL AS VERY HEAVY RAINFALL. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SUCH AS BOATING SHOULD SEEK SAFE SHELTER. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. THESE STORMS SHOULD BEGIN MOVING INT0 WESTERN WISCONSIN BY ABOUT 130 AM. SCATTERED THUNDERSHOWERS WERE ALSO OCCURRING OVER THE SOUTHERN TWO-THIRDS OF MINNESOTA AND EXTREME WESTERN WISCONSIN. THEY WERE MAINLY LOCATED TO THE WEST OF A LINE FROM GRAND RAPIDS MINNESOTA TO MOOSE LAKE TO PLUM CITY WISCONSIN TO ROCHESTER MINNESOTA. MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR. DLK
Special weather statement, Aug 9, 1:50 AM CDT, 2 hours 18 minutes before
WIZ003-006-MNZALL-090730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 150 AM CDT MON AUG 9 1993 ...STRONG THUNDERSTORMS CONTINUING IN TWIN CITIES METRO AREA... STRONG THUNDERSTORMS CONTINUED TO RE/DEVELOP OVER THE TWIN CITY METRO AREA AT 130 AM. THE LEADING EDGE OF THESE THUNDERSTORMS WENT FROM...WYOMING JUST NORTH OF THE TWIN CITIES...DOWN THROUGH THE INTERNATIONAL AIRPORT TO HASTINGS. NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS. THEY ARE STILL CAPABLE OF PRODUCING FREQUENT DEADLY LIGHTNING...SMALL HAIL...AND STRONG GUSTY WINDS... AS WELL AS VERY HEAVY RAINFALL. ONE UNUSUAL FEATURE WITH THESE THUNDERSTORM/S IS...THAT THEY ARE REDEVELOPING RIGHT ACROSS THE TWIN CITY METRO AREA AND THEN...WEAKENING AS THEY MOVE INTO WISCONSIN. THESE THUNDERSTORMS ARE PART OF A WIDE AREA OF RAIN THAT WAS DETECTED BY RADAR OVER MOST OF CENTRAL AND EAST CENTRAL MINNESOTA AND ACROSS WEST CENTRAL AND NORTHWEST WISCONSIN. THE LEADING EDGE OF THE RAIN WENT FROM...BLACK RIVER FALLS TO EAU CLAIRE AND HAYWARD WISCONSIN. THE TRAILING EDGE WENT FROM ALEAXNDRIA TO ST CLOUD DOWN TO LITCHFIELD...GLENCOE...OWATONNA AND ROCHESTER MINNESOTA. MOVEMENT OF THE RAIN WAS TO THE EAST AT 20 MILES AN HOUR. CARLYON
Special weather statement, Aug 9, 1:53 AM CDT, 2 hours 15 minutes before
WIZ003-006-MNZALL-090730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 150 AM CDT MON AUG 9 1993 ...STRONG THUNDERSTORMS CONTINUING IN TWIN CITIES METRO AREA... STRONG THUNDERSTORMS CONTINUED TO RE/DEVELOP OVER THE TWIN CITY METRO AREA AT 130 AM. THE LEADING EDGE OF THESE THUNDERSTORMS WENT FROM...WYOMING JUST NORTH OF THE TWIN CITIES...DOWN THROUGH THE INTERNATIONAL AIRPORT TO HASTINGS. NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS. THEY ARE STILL CAPABLE OF PRODUCING FREQUENT DEADLY LIGHTNING...SMALL HAIL...AND STRONG GUSTY WINDS... AS WELL AS VERY HEAVY RAINFALL. ONE UNUSUAL FEATURE WITH THESE THUNDERSTORM/S IS...THAT THEY ARE REDEVELOPING RIGHT ACROSS THE TWIN CITY METRO AREA AND THEN...WEAKENING AS THEY MOVE INTO WISCONSIN. THESE THUNDERSTORMS ARE PART OF A WIDE AREA OF RAIN THAT WAS DETECTED BY RADAR OVER MOST OF CENTRAL AND EAST CENTRAL MINNESOTA AND ACROSS WEST CENTRAL AND NORTHWEST WISCONSIN. THE LEADING EDGE OF THE RAIN WENT FROM...BLACK RIVER FALLS TO EAU CLAIRE AND HAYWARD WISCONSIN. THE TRAILING EDGE WENT FROM ALEAXNDRIA TO ST CLOUD DOWN TO LITCHFIELD...GLENCOE...OWATONNA AND ROCHESTER MINNESOTA. MOVEMENT OF THE RAIN WAS TO THE EAST AT 20 MILES AN HOUR. CARLYON
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.