Alert archive / Minnesota / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 40, NWS Twin Cities, MN

August 2, 1988Sherburne County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 2, 1988, 3:30 PM CDT for Sherburne County, Minnesota. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1988, 3:30 PM CDT (20:30 UTC)
Expired
Aug 2, 1988, 4:00 PM CDT
In force
30 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Sherburne County, MN

The radar

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

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 8.5 hours before the alert went out and 67 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 1988-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 328 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 12:00Z on 1988-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 square meters per square second.193958Sfc1 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
328 J/kg
Mixed-layer CIN
-209 J/kg
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTC 022030
SVRSTC
MNC141-022130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
330 PM CDT TUE AUG 2 1988

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 430 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF
CENTRAL MINNESOTA:

                   SHERBURNE

INCLUDING THE CITIES OF

BIG LAKE...BECKER..CLEAR LAKE...ELK RIVER AND ZIMMERMAN.


AT 325 PM CDT RADAR WAS SHOWING A SEVERE THUNDERSTORM BETWEEN BUFFALO
AND MONTICELLO IN WRIGHT COUNTY...30 MILES NORTHWEST OF MINNEAPOLIS.
THIS SERVERE THUNDERSTORM WAS MOVING NORTHEAST AT 30 MPH.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAM_AGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING.  BOATERS SHOULD MOVE OFF LAKES TO NEARBY SHELTER. PEOPLE
OUTSIDE SHOULD MOVE INSIDE STRONG BUILDINGS BUT STAY AWAY FROM
WINDOWS.

NISTLER

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 2, 3:01 PM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
250 PM CDT TUE AUG 2 1988

...THUNDERSTORMS WITH HEAVY RAIN AND GUSTY WINDS DEVELOPNG WEST OF THE
   TWIN CITIES...

AT 230 THIS AFTERNOON THUNDERSTORMS WERE INCREASING RAPIDLY WEST OF
THE TWIN CITIES METROPOLITATN AREA FROM HUTCHINSON SOUTHWEST THROUGH
REDWOOD FALLS AND WORTHINGTON IN SOUTHWEST MINNESOTA. THESE
THUNDERSTORMS PRODUCED VERY HEAVY RAIN AND GUSTY WINDS JUST NORTHWEST
OF HUTCHINSON ABOUT 50 MILES WEST OF DOWNTOWN MINNEAPOLIS.

THESE THUNDERSTORMS ARE MOVING NORTHEAST AND ARE CECPECTED TO SPREAD
THROUGH CARVER AND WRIGHT COUNTIES BETWEEN 30 AND 400 PM THEN EVENTUALLY
OVER HENNEPIN AND THE REST OF THE METROPOLITAN AREA DURING THE REMAINDER
OF THIS AFERNOON.

THESE THUNDERSTORMS MAY PRODUCE DOWNPOURS..GUSTY WINDS AND HAIL.
THOSE ON AREA LAKES ARE URGED TO ALLOW PLENTY OF TIME TO REACH A PLACE
OF SAFETY.  IT THREATENING WEATHERF APPRAOCHED BE PREPARED TO SEEK
SHELTER.
WJH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 12:25 AM CDTSevere Thunderstorm WarningMPXTodd50 min
Aug 2, 12:43 AM CDTSevere Thunderstorm WarningMPXMorrison47 min
Aug 2, 3:08 PM CDTTornado WarningMPXCarver, Hennepin52 min
Aug 2, 3:32 PM CDTTornado WarningMPXAnoka, Hennepin28 min
Aug 2, 3:49 PM CDTTornado WarningMPXAnoka, Ramsey, Washington41 min
Aug 2, 4:30 PM CDTSevere Thunderstorm WarningMPXWashington15 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1988Every severe thunderstorm warning in 1988

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.