Alert archive / Minnesota / Flash Flood Warnings in 1990

Flash Flood Warning 10, NWS Twin Cities, MN

July 18, 1990Faribault County, Martin County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 18, 1990, 9:47 PM CDT for Faribault County, Martin County, Minnesota. It was in force for 88 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1990, 9:47 PM CDT (02:47 UTC)
Expired
Jul 18, 1990, 11:15 PM CDT
In force
88 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Faribault County, MN, Martin 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, 2.8 hours before the alert went out and 141 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 1990-07-19Temperature 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 00:00Z on 1990-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
2179 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
176 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 KRST 190247
FFWRST
MNC091-043-190415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE ROCHESTER MN
947 PM CDT WED JUL 18 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 1115 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE SOUTH CENTRAL PART OF MINNESOTA
      MARTIN...FARIBAULT

AT 9 00 PM...WEATHER SERVICE RADAR DETECTED TORRENTIAL RAINS ACROSS
PARTS OF MARTIN AND FARIBAULT COUNTIES IN SOUTH CENTRAL MINNESOTA.
VERY HEAVY RAINS HAVE CAUSED SOME STREET FLOODING AND WATER IN
BUILDINGS IN THE CITY OF FAIRMONT.  THESE THUNDERSTORMS WERE MOVING
SLOWLY TO THE EAST ACOSS FARIBAULT COUNTY...AND...ADDITIONAL
THUNDERSTORMS WILL MOVE ACROSS MARTIN AND FARIBAULT COUNTIES UNTIL
ABOUT 11 00 PM.

CAMPERS AND OTHERS IN LOW LYING AREAS SHOULD MOVE TO HIGHER GROUND
IMMEDIATELY.  MOTORISTS SHOULD NEVER ATTEMPT TO CROSS WATER OVER
ROADS AS SWIFT CURRENTS MAY WASH THEN AND THEIR CARS AWAY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER
TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH
FLOODING IS OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD
WATERS.  DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER
BEGINS RISING.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.
DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER
COVERS THE ROADWAY.

DOM/FOXO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 11:21 PM CDTFlash Flood WarningMPXFaribault, Martin3 hr

Nearby

Flash Flood Warnings in Minnesota, 1990Every 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.