Alert archive / Minnesota / Flash Flood Warnings in 1990

Flash Flood Warning 18, NWS Twin Cities, MN

July 27, 1990McLeod County, Renville County, Sibley County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 27, 1990, 9:17 PM CDT for McLeod County, Renville County, Sibley County, Minnesota. It was in force for 73 min.

The area

The counties it named.

The facts

Issued: Jul 27, 1990, 9:17 PM CDT (02:17 UTC)
Expired: Jul 27, 1990, 10:30 PM CDT
In force: 73 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties McLeod County, MN, Renville County, MN, Sibley 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, 2.3 hours before the alert went out and 71 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: 954 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 280219
FFWMSP
MNC085-129-143-280515-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
917 PM CDT FRI JUL 27 1990
 
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1215 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL MINNESOTA
          ...MCLEOD...RENVILLE...SIBLEY
 
HEAVY RAINFALL IS REPORTED IN RENVILLE COUNTY EASTWARD ACROSS SIBLEY
AND MCLEOD COUNITIES IN MINNESOTA THIS FRIDAY EVENING WITH RAINFALL
RATES REDUCING VISIBILITY TO ZERO AT A NUMBER OF LOCATIONS. 2 TO 3
INCHES OF RAIN HAS BEEN RECEIVED AT GIBBON..FAIRFAX AND WINTHROP
OR..ABOUT 20 TO 40 MILES EAST OF REDWOOD FALLS MINNESOTA.
 
SOME ROADWAYS HAVE 6 TO 8 INCHES OF WATER ON THEM AT BOTH FAIRFAX AND
AND GIBBONS AND WATER WAS PONDING IN LOW LYING AREAS.  A MOTEL WALL
IN GLENCOE IN CENTRAL SIBLEY COUNTY REPORTEDLY COLLAPSED DUE TO THE
HEAVY RAINFALL.. THIS IS ABOUT 50 MILES SOUTHWEST OF DOWNTOWN
MINNEAPOLIS.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.
TOGSTAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 7:27 PM CDT	Flash Flood Warning	MPX	Blue Earth, Brown, Nicollet	2 hr
Jul 27, 9:28 PM CDT	Flash Flood Warning	MPX	Blue Earth, Brown, Nicollet	2 hr
Jul 28, 1:59 AM CDT	Flash Flood Warning	MPX	Fillmore, Houston, Winona	2 hr
Jul 28, 1:59 AM CDT	Flash Flood Warning	MPX	Olmsted	2 hr
Jul 28, 6:19 PM CDT	Severe Thunderstorm Warning	MPX	Brown	41 min
Jul 28, 6:43 PM CDT	Flash Flood Warning	MPX	Dakota, Ramsey, Washington	42 min
Jul 28, 6:53 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Nicollet	37 min

Nearby

Flash Flood Warnings in Minnesota, 1990 Every flash flood 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.