Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 38, NWS Twin Cities, MN

May 30, 1994Olmsted County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 30, 1994, 6:58 PM CDT for Olmsted County, Minnesota. It was in force for 47 min.

The area

The counties it named.

The facts

Issued: May 30, 1994, 6:58 PM CDT (23:58 UTC)
Expired: May 30, 1994, 7:45 PM CDT
In force: 47 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Olmsted County, MN

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 12.0 hours before the alert went out and 134 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1954 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 262 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 302359 RRA
SVRRST
MNC109-310045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
658 PM CDT MON MAY 30 1994
 
THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A
SEVERE THUNDERSTORM WARNING     EFFECTIVE UNTIL  745 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST MINNESOTA
 
   ...OLMSTED COUNTY
 
THIS WARNING INCLUDES THE TOWNS OF ROCHESTER...STEWARTVILLE...AND EYOTA.
 
 
AT 750PM CDT RADAR INDICATED A SEVERE THUNDERSTORMS 15 MILES WEST TO
SOUTHWEST OF ROCHESTER NEAR THE TOWNS OF OSLO AND KASSON. THESE
STORMS WERE MOVING THE EAST AT 30 MPH AND WILL MOVE INTO THE
CITY OF ROCHESTER BY 715 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.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE
OR NO WARNING.  STAY INDOORS...REMAIN CALM AND BE READY TO MOVE
QUICKLY TO THE BASEMENT.
 
 
 
&

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

Local storm report, May 30, 3:15 PM CDT, 3 hours 43 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
315 PM CDT MON MAY 30 1994

TIME          EVENTY

300 PM CDT    GOLF BALL SIZE HAIL NEAR BIG LAKE MN...SHERBURNE COUNTY
              WALL CLOUD NEAR BECKER IN SHERBURNE COUNTY.

300 PM CDT    DIME SIZE HAIL NEAR PRINCETON IN MILLE LACS COUNTY.

FRASER

Local storm report, May 30, 3:34 PM CDT, 3 hours 24 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST CLOUD MN
315 PM CDT MON MAY 30 1994

TIME          EVENTY

300 PM CDT    GOLF BALL SIZE HAIL NEAR BIG LAKE MN...SHERBURNE COUNTY
              WALL CLOUD N>EAR BECKER IN SHERBURNE COUNTY.

300 PM CDT    DIME SIZE HAIL NEAR PRINCETON IN MILLE LACS COUNTY.

FRASER

Special weather statement, May 30, 3:40 PM CDT, 3 hours 18 minutes before

MNZ042>043-046-048>051-054>058-064-302130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
340 PM CDT MON MAY 30 1994

...SEVERE THUNDERSTORM WARNING FOR SHERBURNE COUNTY CANCELLED...

THE SEVERE THUNDERSTORM THAT MOVED THROUGH SOUTHERN SHERBURNE
COUNTY HAS MOVED EAST.

THE STORM PRODUCED GOLF BALL SIZE HAIL NEAR BIG LAKE AND A WALL
CLOUD NEAR BECKER.

PORTIONS OF EAST CENTRAL MINNESOTA REMAIN IN A TORNADO WATCH UNTIL 10
PM. PERSONS IN THE WATCH AREA SHOULD CONTINUE TO BE AWARE OF POSSIBLE
ADVERSE WEATHER CONDTIONS.

PARKIN

Special weather statement, May 30, 3:42 PM CDT, 3 hours 16 minutes before

MNZ042>043-046-048>051-054>058-064-302130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
340 PM CDT MON MAY 30 1994

...SEVERE THUNDERSTORM WARNING FOR SHERBURNE COUNTY CANCELLED...

THE SEVERE THUNDERSTORM THAT MOVED THROUGH SOUTHERN SHERBURNE
COUNTY HAS MOVED EAST.

THE STORM PRODUCED GOLF BALL SIZE HAIL NEAR BIG LAKE AND A WALL
CLOUD NEAR BECKER.

PORTIONS OF EAST CENTRAL MINNESOTA REMAjIN IN A TORNADO WATCH UNTIL 10
PM. PERSONS IN THE WATCH AREA SHOULD CONTINUE TO BE AWARE OF POSSIBLE
ADVERSE WEATHER CONDTIONS.

PARKIN

Special weather statement, May 30, 5:38 PM CDT, 1 hour 20 minutes before

MNZ004>096-310000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
540 PM CDT MON MAY 30 1994

SEVERE THUNDERSTORMS MOVED THROUGH EASTERN MINNESOTA LATE THIS AFTER-
NOON.  CONDITIONS HAVE STABILIZED OVER NORTHEAST MINNESOTA AND ALTHOUGH
THERE MAY BE SOME SHOWERS...SEVERE WEATHER IS NO LONGER EXPECTED NORTH
OF THE TWIN CITIES METRO AREA.  THE TORNADO WATCH THAT WAS IN EFFECT
FOR THIS AREA UNTIL 10 PM HAS BEEN CANCELLED.

THE TORNADO WATCH REMAINED IN EFFECT UNTIL 10 PM FOR SOUTHEAST
MINNESOTA...ROUGHLY BOUNDED BY A MINNEAPOLIS...WASECA...LA CRESCENT
LINE.  THE WATCH CONTINUED TO INCLUDE THE SOUTH TWIN CITES METRO AREA
...RED WING...ROCHESTER AND WINONA.

PEOPLE SHdOULD LISTEN TO WEATHER UPDATES ON THE MEDIA OR YOUR WEATHER
RADIO.
 SCOTT

Special weather statement, May 30, 5:40 PM CDT, 1 hour 18 minutes before

MNZ004>096-310000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
540 PM CDT MON MAY 30 1994

SEVERE THUNDERSTORMS MOVED THROUGH EASTERN MINNESOTA LATE THIS AFTER-
NOON.  CONDITIONS HAVE STABILIZED OVER NORTHEAST MINNESOTA AND ALTHOUGH
THERE MAY BE SOME SHOWERS...SEVERE WEATHER IS NO LONGER EXPECTED NORTH
OF THE TWIN CITIES METRO AREA.  THE TORNADO WATCH THAT WAS IN EFFECT
FOR THIS AREA UNTIL 10 PM HAS BEEN CANCELLED.

THE TORNADO WATCH REMAINED IN EFFECT UNTIL 10 PM FOR SOUTHEAST
MINNESOTA...ROUGHLY BOUNDED BY A MINNEAPOLIS...WASECA...LA CRESCENT
LINE.  THE WATCH CONTINUED TO INCLUDE THE SOUTH TWIN CITES METRO AREA
...RED WING...ROCHESTER AND WINONA.

PEOPLE SHOULD LISTEN TO WEATHER UPDATES ON THE MEDIA OR YOUR WEATHER
RADIO.
 SCOTT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 2:57 PM CDT	Severe Thunderstorm Warning	MPX	Sherburne	48 min
May 30, 3:02 PM CDT	Severe Thunderstorm Warning	MPX	Wright	18 min
May 30, 3:09 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin	51 min
May 30, 3:24 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Isanti	51 min
May 30, 3:53 PM CDT	Tornado Warning	MPX	Hennepin	40 min
May 30, 3:53 PM CDT	Tornado Warning	MPX	Anoka, Ramsey	52 min
May 30, 4:06 PM CDT	Tornado Warning	MPX	Chisago, Washington	54 min
May 30, 4:20 PM CDT	Tornado Warning	MPX	Anoka, Hennepin, Ramsey	25 min
May 30, 6:22 PM CDT	Severe Thunderstorm Warning	MPX	Dodge, Steele	38 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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.