Alert archive / Minnesota / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 2, NWS Twin Cities, MN

May 7, 1988Benton County, Sherburne County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 1988, 5:17 PM CDT for Benton County, Sherburne County, Minnesota. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
May 7, 1988, 5:17 PM CDT (22:17 UTC)
Expired
May 7, 1988, 6:15 PM CDT
In force
58 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Benton County, MN, 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, 10.3 hours before the alert went out and 83 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 1988-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1988-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 348 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2080 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
348 m²/s²
0-3 km storm-relative helicity
360 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTC 072219
SVRSTC
MNC145-009-141-072315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST CLOUD MN
517 PM CDT SAT MAY 7 1988

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF
CENTRAL MINNESOTA:
                  EASTERN STEARNS...WESTERN BENTON
                  WESTERN SHERBURNE
INCLUDING THE CITIES OF
 ST. CLOUD...SAUK RAPIDS...FOLEY AND CLEAR LAKE


AT 512 PM CDT THE STEARNS SHERIFFS OFFICE REPORTED LARGE HAIL AT ST.
JOSEPHS MINNESOTA...5 MILES WEST OF ST. CLOUD. THIS STORM WAS MOVING
NORTH AT 30 MPH.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPBARE
FOR DAMAGING 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.

WDV

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, May 7, 12:41 PM CDT, 4 hours 36 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
1230 PM CDT SAT MAY 7 1988

...TORNADO WATCH FOR WESTERN MINNESOTA IN EFFECT UNTIL 700 PM CDT...

AT 1226 PM...NO SEVERE WEATHER WAS REPORTED OR DETECTED IN MINNESOTA.
HOWEVER...CONDITIONS DO APPEAR FAVORABLE FOR THE DEVELOPMENT OF
SEVERE THUNDERSTORMS AND TORNADOES OVER PARTS OF WESTERN MINNESOTA.
A TORNADO WATCH IS IN EFFECT FOR PARTS OF WESTERN MINNESOTA UNTIL
700 PM CDT THIS EVENING.  PERSONS IN THE AFFECTED AREAS SHOULD LISTEN
FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS AS CONDITIONS DEVELOPE.

LIGHT RAINSHOWERS WERE FALLING OVER SCATTERED SECTIONS OF WEST CENTRAL
WISCONSIN.  THEY WERE IN A 25 0MILE WIDE BAND FROM SPOONER TO BLACK
RIVER FALLS.

MOVEMENT WAS TO THE NORTH AT 30 MILES AN HOUR.
KRAFT
Special weather statement, May 7, 4:39 PM CDT, 38 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN
430 PM CDT SAT MAY 7 1988

...TORNADO WATCH FOR WESTERN MINNESOTA IN EFFECT UNTIL 700 PM CDT...

AT 430 PM...THUNDERSTORMS...SOME WITH HEAVY RAIN...WERE DEVELOPING
RAPIDLY OVER WIDELY SCATTERED SECTIONS OF THE SOUTHWEST HALF OF
MINNESOTA.  THEY WERE MAINLY LOCATED TO THE SOUTH OF A LINE FROM
FARGO TO DETROIT LAKES TO MINNEAPOLIS TO LA CROSSE.  THE STRONGEST
THUNDERSTORMS WERE OVER WEST CENTRAL AND NORTHWEST MINNESOTA...IN
THE FARGO...ALEXANDRIA VICINITY.  SOME OF THESE STORMS MAY PRODUCE
LARGE HAIL...DAMAGING WINDS...DANGEROUS LIGHTNING...AND VERY HEAVY
RAINFALL.

MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTH AT 30 MILES AN HOUR.
PERSONS IN WESTERN MINNESOTA SHOULD CONTINUE TO LISTEN FOR FURTHER
STATEMENTS AND WARNINGS...AND BE PREPARED TO SEEK SAFE SHELTER IF
THREATENING WEATHER APPROACHES.
KRAFT
Special weather statement, May 7, 4:50 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
445 PM CDT SAT MAY 7 1988

...TORNADO WATCH UNTIL 7PM IN WESTERN MINNESOTA...
...THUNDERSTORMS FORMING IN CENTRAL MINNESOTA...

AT 445 PM CDT THUNDERSTORMS WERE FORMING IN CENTRAL MINNESOTA ALONG A
LINE FROM LITTLE FALLS TO ST. CLOUD AND SOUTH TOWARDS LITCHFIELD. NO
SEVERE WEATHER HAS BEEN REPORTED WITH ANY THESE STORMS...HOWEVER THEY
WERE STILL IN THE EARLY STAGES OF DEVELOPMENT AND MAY YET PRODUCE
HAIL...HEAVY RAIN AND STRONG...POSSIBLY DAMAGING WINDS.

MAKE PLANS NOW...AND BE READY TO MOVE QUICKLY TO A PLACE WHERE YOU
WILL BE SAFE IF THESE STORMS SHOULD BECOME SEVERE.

WDV

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 5:17 PM CDTSevere Thunderstorm WarningMPXStearns33 min
May 7, 5:22 PM CDTSevere Thunderstorm WarningMPXFreeborn38 min
May 7, 6:13 PM CDTSevere Thunderstorm WarningMPXRice47 min
May 7, 6:18 PM CDTSevere Thunderstorm WarningMPXDakota, Scott57 min
May 7, 6:40 PM CDTSevere Thunderstorm WarningMPXRamsey, Washington50 min
May 7, 6:44 PM CDTSevere Thunderstorm WarningMPXDodge, Goodhue, Olmsted, Wabasha46 min
May 7, 6:58 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Washington32 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.