Alert archive / Minnesota / Flash Flood Warnings in 1990
Flash Flood Warning 19, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Jul 27, 1990, 9:28 PM CDT for Blue Earth County, Brown County, Nicollet County, Minnesota. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 27, 1990, 9:28 PM CDT (02:28 UTC)
- Expired
- Jul 27, 1990, 11:30 PM CDT
- In force
- 2 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Blue Earth County, MN, Brown County, MN, Nicollet 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, 2.5 hours before the alert went out and 93 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KRST 280228
FFWRST
MNC015-103-013-280430-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ROCHESTER MN
928 PM CDT FRI JUL 27 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1130 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE SOUTH CENTRAL PART OF MINNESOTA
EASTERN BROWN...NICOLLET...BLUE EARTH
SOME CITIES INCLUDED IN THE WARNING ARE...NEW ULM...LAKE CRYSTAL...
MANKATO...NICOLLET...ST PETER.
AT 9 15 PM...THUNDERSTORMS CONTINUE TO PRODUCE VERY HEAVY...AT TIMES
TORRENTIAL RAINS OVER PARTS OF NICOLLET...BROWN...AND BLUE EARTH
COUNTIES IN SOUTH CENTRAL MINNESOTA. WITH THE GROUND ALREADY
SATURATED...PONDING OF WATER IN LOW-LYING AREAS...AND FLASH FLOODING
ARE LIKELY...AND INDEED OCCURRING IN SOME AREAS ALREADY.
SIX INCHES OF WATER WAS REPORTED OVER HIWAY 68 WEST OF MANKATO...AND
WATER WAS REPORTED OVER THE ROAD 2 MILES EAST OF LAKE CRYSTAL. MANY
AREAS HAVE RECEIVED MORE THAN 3 INCHES OF RAIN...AND STILL RAINING.
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.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, 9:17 PM CDT | Flash Flood Warning | MPX | McLeod, Renville, Sibley | 73 min |
| 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, 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.