Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 105, NWS Twin Cities, MN

August 26, 1990Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 26, 1990, 12:36 AM CDT for Morrison County, Todd County, Minnesota. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Aug 26, 1990, 12:36 AM CDT (05:36 UTC)
Expired
Aug 26, 1990, 1:30 AM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Morrison County, MN, Todd 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 00:00Z, 5.6 hours before the alert went out and 153 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 00:00Z on 1990-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3299 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1990-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
3299 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1021 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 25, 9:22 PM CDT, 3 hours 14 minutes before
MNZ011-260300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
923 PM CDT SAT AUG 26 1990

...THUNDERSTORM WITH HEAVY RAINS MOVING ACROSS CENTRAL MINNESOTA...

AT 920 PM CDT RADAR LOCATED AN INTENSE THUNDERSTORM WITH HEAVY RAIN
AND SMALL HAIL ABOUT 4 MILES NORTH OF CUSHING MINNESOTA WHICH IS 48
MILES NORTHWEST OF ST CLOUD.

THE THUNDERSTORM WAS MOVING EAST AT 30 MPH AND SHOULD MOVE THROUGH
THE TOWN OF FORT RIPLEY AROUND 945 PM CDT.

VC
Special weather statement, Aug 25, 10:37 PM CDT, 1 hour 59 minutes before
MNZ011-260410-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
1035 PM CDT SAT AUG 26 1990

...THUNDERSTORM WITH HEAVY RAINS MOVING ACROSS CENTRAL MINNESOTA...

AT 1030 PM CDT RADAR INDICATED AN INTENSE THUNDERSTORM WITH HEAVY
RAIN AND SMALL HAIL. THE STORM WAS LOCATED ABOUT 3 MILES EAST OF
LITTLE FALLS MINNESOTA...ABOUT 30 MILES NORTH OF ST CLOUD.

THE THUNDERSTORM WAS MOVING EAST AT 30 MPH AND SHOULD MOVE THROUGH
THE TOWN OF PIERZ AROUND 1050 PM CDT.

PEOPLE IN THE PATH OF THIS STORM SHOULD MOVE INDOORS AND STAY AWAY
FROM WINDOWS. DEADLY LIGHTNING...BRIEF GUSTY WINDS UP TO 40 MPH
AND SMALL HAIL ARE LIKELY TO OCCUR WITH THIS STORM.
VC
Special weather statement, Aug 25, 11:27 PM CDT, 1 hour 9 minutes before
MNZ011-260500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST CLOUD MN
1125 PM CDT SAT AUG 26 1990

...A LINE OF THUNDERSTORMS WERE MOVING ACROSS WEST-CENTRAL
MINNESOTA...

AT 1020 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS WITH HEAVY
RAIN...SMALL HAIL AND GUSTY WIND EXTENDING FROM ALEXANDRIA MINNESOTA
SOUTH TO GRANITE FALLS ALONG THE MINNESOTA RIVER.

THE THUNDERSTORMS WERE MOVING EAST AT 30 TO 35 MPH.

PEOPLE IN 'THE PATH OF THESE STORMS SHOULD MOVE INDOORS AND STAY AWAY
FROM WINDOWS. DEADLY LIGHTNING...BRIEF GUSTY WINDS UP TO 50 MPH
AND SMALL HAIL ARE LIKELY TO OCCUR WITH THESE STORMS.
VC
Special weather statement, Aug 25, 11:28 PM CDT, 1 hour 8 minutes before
MNZ011-260500-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE ST CLOUD MN
1125 PM CDT SAT AUG 26 1990

...A LINE OF THUNDERSTORMS WERE MOVING ACROSS WEST-CENTRAL
MINNESOTA...

AT 1120 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS WITH HEAVY
RAIN...SMALL HAIL AND GUSTY WIND EXTENDING FROM ALEXANDRIA MINNESOTA
SOUTH TO GRANITE FALLS ALONG THE MINNESOTA RIVER.

THE THUNDERSTORMS WERE MOVING EAST AT 30 TO 35 MPH.

PEOPLE IN TH(E PATH OF THESE STORMS SHOULD MOVE INDOORS AND STAY AWAY
FROM WINDOWS. DEADLY LIGHTNING...BRIEF GUSTY WINDS UP TO 50 MPH
AND SMALL HAIL ARE LIKELY TO OCCUR WITH THESE STORMS.
VC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 8:05 PM CDTSevere Thunderstorm WarningMPXTodd55 min
Aug 25, 11:07 PM CDTSevere Thunderstorm WarningMPXMorrison53 min
Aug 25, 11:52 PM CDTSevere Thunderstorm WarningMPXPope38 min
Aug 26, 12:20 AM CDTSevere Thunderstorm WarningMPXStearns55 min
Aug 26, 12:52 AM CDTSevere Thunderstorm WarningMPXBenton38 min
Aug 26, 1:11 AM CDTSevere Thunderstorm WarningMPXMille Lacs, Sherburne64 min
Aug 26, 3:06 AM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin54 min
Aug 26, 5:42 AM CDTSevere Thunderstorm WarningMPXOlmsted, Wabasha63 min
Aug 26, 6:22 AM CDTSevere Thunderstorm WarningMPXWinona53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990Every 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; the sounding from the Mesonet's radiosonde archive.