Alert archive / Minnesota / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 2, NWS Twin Cities, MN

March 31, 1986Anoka County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 31, 1986, 3:52 PM CST for Anoka County, Minnesota. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Mar 31, 1986, 3:52 PM CST (21:52 UTC)
Expired
Mar 31, 1986, 4:45 PM CST
In force
53 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Anoka 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, 9.9 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 1986-03-31Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1986-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 389 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1364 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
389 m²/s²
0-3 km storm-relative helicity
416 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 KMSP 312152
SVRMSP
MNC019-053-003-139-123-037-312245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
352 PM CST MON MAR 31 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 445 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF


EAST CENTRAL MINNESOTA...EASTERN CARVER...EASTERN HENNEPIN...
 SOUTHERN ANOKA...SCOTT...RAMSEY AND WESTERN DAKOTA

AT 345 PM A LINE OF SEVERE THUNDERSTORMS WAS INDICATED BY
RADAR FROM NEAR ANOKA...ABOUT 30 MILES NORTH OF THE TWIN CITIES
...THROUGH HENNEPIN AND CARVER TO SCOTT COUNTIES OF THE
GREATER TWIN CITIES METRO AREA.  GOLF BALL SIZED HAIL WAS
REPORTED AT EXCELSIOR AND DEEPHAVEN.  MOVEMENT OF THIS SEVERE
THUNDERSTORM WAS TO THE EAST AT 45 MILES AN HOUR.  MOST OF
THE TWIN CITIES METRO AREA SHOULD BE AFFECTED BY THESE STORMS
BY ABOUT 430 PM.

REMEMBER SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE
HDAIL AND FREQUENT LIGHTNING STRIKES. ALSO SEVERE THUNDERSTORMS CAN
AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE
WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A PLACE OF
SAFETY IF ONE IS SPOTTED.

MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 3:52 PM CSTSevere Thunderstorm WarningMPXDakota, Hennepin, Ramsey, Scott53 min
Mar 31, 3:52 PM CSTSevere Thunderstorm WarningMPXCarver53 min
Mar 31, 4:44 PM CSTSevere Thunderstorm WarningMPXWashington61 min
Mar 31, 4:44 PM CSTSevere Thunderstorm WarningMPXDakota61 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1986Every severe thunderstorm warning in 1986

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.