Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 108, NWS Twin Cities, MN

July 5, 1994Dakota County, Hennepin County, Ramsey County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 5, 1994, 4:46 AM CDT for Dakota County, Hennepin County, Ramsey County, Minnesota. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Jul 5, 1994, 4:46 AM CDT (09:46 UTC)
Expired
Jul 5, 1994, 5:30 AM CDT
In force
44 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Dakota County, MN, Hennepin County, MN, Ramsey County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 9.8 hours before the alert went out and 31 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 1994-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1005 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1994-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
1005 J/kg
Mixed-layer CIN
-187 J/kg
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 050946
SVRMSP
MNC171-037-053-123-051030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
446 AM CDT TUE JUL 5 1994
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  530 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MINNESOTA
 
   ...WRIGHT COUNTY
 
IN EAST CENTRAL MINNESOTA
 
   ...DAKOTA COUNTY...HENNEPIN COUNTY...RAMSEY COUNTY...SOUTHERN
WASHINGTON...
 
AT 445 SEVERE THUNDERSTOMRS WERE MOVING THROUGH THE TWIN CITIES FROM
NEAR COKATO TO MINNEAPOIS TO HASTINGS AND MOVING NORTHEAST AT 40 MILES
AN HOUR. THESE THUNDERSTOMRS WILL BE AFFECTING THE GREATER
MINNEAPOLIS/ST PAUL AREA THOUGH 530 PM. TREES WERE REPORTED DOWN AT 440
NEAR WATERTOWN IN CARVER COUNTY AND HAIL WAS OCCURING AT THE TWIN CITIES
NOTIONAL AIRPORT.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAlIN.  FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM.  PEOPLE IN MOBILE HOMES SHOULD GO
TO A STORM SHELTER.
 
CARSTENS
 
&

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 5, 3:19 AM CDT, 1 hour 27 minutes before
MNZ042>044-046-048>051-054>058-064-050900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
310 AM CDT TUE JUL 5 1994

...SEVERE THUNDERSTORM WARNING FOR SHERBURNE COUNTY HAS EXPIRED...
...STRONG THUNDERSTORMS OVER CENTRAL MINNESOTA...

AT 300 AM RADAR SHOWED A LINE OF THUNDERSTORMS EXTENDING FROM MILLE
LACS COUNTY SOUTHWEST TO BENSON IN SWIFT COUNTY.  THESE THUNDERSTORMS
WERE MOVING SOUTHEAST AT 20 MPH.

THE STRONGEST STORMS WERE LOCATED IN NORTHEAST KANDIYOHI COUNTY AND
SOUTHEAST SWIFT COUNTY AND WERE PRODUCING VERY HEAVY RAINS.

MINOR STREET FLOODING AND SOME PONDING OF WATER ON ROADWAYS CAN BE
EXPECTED FROM THESE HEAVY RAINS.  DO NOT DRIVE OVER FLOODED AREAS.

FRASER
Special weather statement, Jul 5, 3:49 AM CDT, 57 minutes before
MNZALL-050955-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
350 AM CDT TUE JUL 5 1994

AT 330 AM CDT...STRONG THUNDERSTORMS WERE LOCATED OVER MUCH OF THE
SOUTHERN ONE HALF OF MINNESOTA. THE STRONGEST STORMS WERE LOCATED IN
SOUTH CENTRAL MINNESOTA IN EASTERN NICOLLET COUNTY NEAR NORSELAND...
ABOUT 20 MILES NORTH OF MANKATO. THIS STRONG STORM IS MOVING NORTHEAST
AT 40 MILES AN HOUR AND SHOULD AFFECT THE TOWNS OF RUSH RIVER...LESUEUR
AND HENDERSON THROUGH 415 AM.

ELSEWHERE...THUNDERSTORMS WERE LOCATED WEST OF A LINE FROM ALBERT LEA
NORTH TO ST. PETER...ANOKA AND SANDSTONE.

REMEMBER A SEVERE THUNDERSTORM WATCH REMAINS IN AFFECT FOR MUCH OF THEj
SOUTHERN ONE HALF OF MINNESOTA UNTIL 700 AM. BE PREPARED TO SEEK
SHELTER QUICKLY IF A WARNING IS ISSUED.
ERICKSEN
Special weather statement, Jul 5, 3:50 AM CDT, 56 minutes before
MNZALL-050955-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
350 AM CDT TUE JUL 5 1994

AT 330 AM CDT...STRONG THUNDERSTORMS WERE LOCATED OVER MUCH OF THE
SOUTHERN ONE HALF OF MINNESOTA. THE STRONGEST STORMS WERE LOCATED IN
SOUTH CENTRAL MINNESOTA IN EASTERN NICOLLET COUNTY NEAR NORSELAND...
ABOUT 20 MILES NORTH OF MANKATO. THIS STRONG STORM IS MOVING NORTHEAST
AT 40 MILES AN HOUR AND SHOULD AFFECT THE TOWNS OF RUSH RIVER...LESUEUR
AND HENDERSON THROUGH 415 AM.

ELSEWHERE...THUNDERSTORMS WERE LOCATED WEST OF A LINE FROM ALBERT LEA
NORTH TO ST. PETER...ANOKA AND SANDSTONE.

REMEMBER A SEVERE THUNDERSTORM WATCH REMAINS IN AFFECT FOR MUCH OF THE
SOUTHERN ONE HALF OF MINNESOTA UNTIL 700 AM. BE PREPARED TO SEEK
SHELTER QUICKLY IF A WARNING IS ISSUED.
ERICKSEN
Special weather statement, Jul 5, 4:20 AM CDT, 26 minutes before
MNZ042>044-046-048>051-054>058-064-051030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
420 AM CDT TUE JUL 5 1994

...SEVERE THUNDERSTORM WATCH UNTIL 7 AM FOR SOUTHERN MINNESOTA...

AT 415 AM RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS IN CENTRAL
MINNESOTA GENERALLY SOUTH AND EAST OF A LINE FROM LITTLE FALLS TO
MONTEVIDEO.   THESE THUNDERSTORMS WERE MOVING EAST AT 25 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN...HAIL AND
FREQUENT LIGHTNING STRIKES.

MINOR STREET FLOODING AND SOME PONDING OF WATER ON ROADWAYS CAN BE
EXPECTED FROM THESE HEAVY RAINS.  DO NOT DRIVE OVER FLOODED AREAS.

FRASER
Special weather statement, Jul 5, 4:28 AM CDT, 18 minutes before
MNZ042>044-046-048>051-054>058-064-051030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
420 AM CDT TUE JUL 5 1994

...SEVERE THUNDERSTORM WATCH UNTIL 7 AM FOR SOUTHERN MINNESOTA...

AT 415 AM RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS IN CENTRAL
MINNESOTA GENERALLY SOUTH AND EAST OF A LINE FROM LITTLE FALLS TO
MONTEVIDEO.   THESE THUNDERSTORMS WERE MOVING EAST AT 25 MPH.

THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAIN...HAIL AND
FREQUENT LIGHTNING STRIKES.

MINOR STREET FLOODING AND SOME PONDING OF WATER ON ROADWAYS CAN BE
EXPECTED FROM THESE HEAVY RAINS.  DO NOT DRIVE OVER FLOODED AREAS.

FRASER
Special weather statement, Jul 5, 4:41 AM CDT, 5 minutes before
MNZ038>098-051300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
440 AM CDT TUE JUL 5 1994

...PART OF SEVERE THUNDERSTORM WATCH NO. 560 CANCELLED...

THE NATIONAL WEATHER SERVICE HAS CLEARED MOST OF SOUTHWEST MINNEOSOTA FROM
THE SEVERE THUNDERSTORM WATCH. THE AREA BOUNDED SOUTHWEST OF A LINE FROM
CANBY...TO REDWOOD FALLS...NEW ULM AND FAIRMONT IS NO LONGER INCLUDED IN
THE WATCH.

THE OTHER PORTIONS OF WATCH NO. 560 R^EMAINS IN EFFECT UNTIL 7 AM.
 DWE

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 10:50 PM CDTSevere Thunderstorm WarningMPXPope55 min
Jul 4, 11:46 PM CDTSevere Thunderstorm WarningMPXPope59 min
Jul 5, 12:22 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Swift38 min
Jul 5, 1:07 AM CDTSevere Thunderstorm WarningMPXKandiyohi53 min
Jul 5, 1:30 AM CDTSevere Thunderstorm WarningMPXStearns60 min
Jul 5, 2:00 AM CDTSevere Thunderstorm WarningMPXSherburne60 min
Jul 5, 2:37 AM CDTSevere Thunderstorm WarningMPXMartin, Watonwan53 min
Jul 5, 3:08 AM CDTSevere Thunderstorm WarningMPXBrown, Nicollet37 min
Jul 5, 3:54 AM CDTSevere Thunderstorm WarningMPXSibley34 min
Jul 5, 4:12 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod63 min
Jul 5, 4:15 AM CDTSevere Thunderstorm WarningMPXScott55 min
Jul 5, 4:38 AM CDTSevere Thunderstorm WarningMPXChisago, Washington52 min
Jul 5, 4:46 AM CDTSevere Thunderstorm WarningMPXWright44 min
Jul 5, 4:58 AM CDTSevere Thunderstorm WarningMPXAnoka62 min
Jul 5, 5:15 AM CDTSevere Thunderstorm WarningMPXChisago, Isanti47 min
Jul 5, 5:15 AM CDTSevere Thunderstorm WarningMPXWashington47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994Every 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.