Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 51, NWS Twin Cities, MN

June 12, 1990Le Sueur County, Rice County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 12, 1990, 8:51 PM CDT for Le Sueur County, Rice County, Minnesota. It was in force for 54 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 12, 1990, 8:51 PM CDT (01:51 UTC)
Expired: Jun 12, 1990, 9:45 PM CDT
In force: 54 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Le Sueur County, MN, Rice County, MN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Jun 12, 9:11 PM CDT	Hail 1.75	Rice, MN
Jun 12, 9:38 PM CDT	Hail 1.75	Rice, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 1.9 hours before the alert went out and 55 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: 1326 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: -0.4
Supercell composite: -2.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KRST 130152
SVRRST
MNC079-131-130245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
851 PM CDT TUE JUN 12 1990
 
THE NATIONAL WEATHER SERVICE IN ROCHESTER HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL MINNESOTA
          ...EASTERN LE SUEUR...NORTHWESTERN RICE
 
...THIS WARNING ALSO INCLUDES THE TOWNS OF NORTHFIELD...LONSDALE...AND
FARIBAULT MN...
 
AT 845 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 18 MILES EAST OF
MANKATO MN.  THIS SEVERE THUNDERSTORM IS MOVING NORTHEAST AT 40 MPH
AND SHOULD BE IN THE NORTHFIELD VICINITY BY 930 PM.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT	 STAY AWAY FROM WINDOWS.

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, Jun 12, 3:44 PM CDT, 5 hours 7 minutes before

MNZALL-WIZ003-006-122100-

SPECIAL WEATHER STATEMENT AND PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
345 PM CDT TUE JUN 12 1990

...TORNADAO WATCH IN EFFECT FOR SOUTHEAST MINNESOTA.. WESTERN AND
   NORTHERN WISCONSIN UNTIL 8 PM CDT...
A STRONG THUNDERSTORM DEVELOPED AND MOVED FROM SCOTT COUNTY INTO
HENNEPIN COUNTY SINCE 230 PM CDT. THIS STORM PRODUCED SMALL HAIL
NEAR JORDAN AROUND 330 PM CDT. THE STORM WAS MOVING TO THE NORTHEAST
AT 45 MPH. VERY HEAVY RAINS AND SMALL HAIL ARE POSSIBLE WITH THIS
STORM AS IT MOVES INTO RAMSEY AND WASHINGTON COUNTIES OF THE TWIN
CITIES METRO AREA.

THUNDERSTORMS WERE ALSO DEVELOPING BACK TO THE SOUTHWEST OF THE METRO
AREA INTO SCOTT COUNTY AND WILL MOVE OVER THE SAME AREA AGAIN THROUGH
430 PM.

SCATTERED SHOWERS AND THUNDERSHOWERS WERE LOCATED AROUND HAYWARD...
RICE LAKE AND BLAIR OF WESTERN WISCONSIN. MOVEMENT WAS NORTHEAST
AT 45 MPH.
 JHM

Local storm report, Jun 12, 8:04 PM CDT, 47 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS, MN
803 PM CDT TUE JUN 12 1990
      ...ATTN SELS A MSP...

 530 PM  PRIOR LAKE....SCOTT COUNTY MN...DIME SIZE HAIL
 540PM   60 MPH WIND..BLOOMINGTON MN...S HENNEPIN COUNTY
 535PM   SAVAGE...SCOTT COUNTY MN...DIME SIZE HAIL
 625PM   DIME HAIL..RIVER FALLS...ST CROIX COUNTY..WI
 635PM   PRESCOTT...ST CROIX COUNTY WI...EST 60 MPH PLUS WINDS..
         SHERIFF SAID "IF HIS CAR HAD WINGS IT WOULD HAVE FLOWN"
 705PM   NEAR WILSON..ST CROIX COUNTY..60 TO 70 MPH WINDS
 700 PM  BALDWIN..WILSON AREA OF ST CROIX COUNTY WI...STRUCTURAL
         DAMAGE...LARGE TREES DOWN..NMRS POWER OUTAGES.
 735 TO  REPORTS OF 70 MPH PLUS WINDS IN BLOOMER AND CHIPPEWA FALLS
 755PM   IN CHIPPWA COUNTY..WI
 745 PM  GOLFBALL HAIL IN EAU CLAIRE IN EAU CLAIRE CO..WI
         PAULSON

Local storm report, Jun 12, 8:23 PM CDT, 28 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE MINNEAPOLIS, MN
825 PM CDT TUE JUN 12 1990
      ...ATTN SELS A MSP...

 720PM   DUNN COUNTY...WI.  WHEELER AREA.  EXTENSIVE WIND DAMAGE...
         AT LEAST TWO HOMES SEVERELY DAMAGED....MANY TREES AND POWER
         POLES SNAPPED....KXJ-88 NOAA WEATHER RADIO IN WHEELER WI OTS.
         REPORT CAME FROM TECHNICIAN ATTEMPTING TO REPAIR NWR.

PAULSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 8:13 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet	32 min
Jun 12, 9:43 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	47 min
Jun 12, 11:09 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville, Sibley	51 min
Jun 12, 11:25 PM CDT	Tornado Warning	MPX	Sibley	35 min
Jun 13, 12:21 AM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Scott	69 min
Jun 13, 12:21 AM CDT	Severe Thunderstorm Warning	MPX	Dakota	69 min
Jun 13, 1:20 AM CDT	Flash Flood Warning	MPX	Dodge, Goodhue, Olmsted, Wabasha	115 min
Jun 13, 2:05 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn	25 min
Jun 13, 2:30 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Mower	45 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990 Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.