Alert archive / Minnesota / Flash Flood Warnings in 1990
Flash Flood Warning 22, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Jul 28, 1990, 6:43 PM CDT for Dakota County, Ramsey County, Washington County, Minnesota. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Jul 28, 1990, 6:43 PM CDT (23:43 UTC)
- Expired
- Jul 28, 1990, 7:25 PM CDT
- In force
- 42 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Dakota County, MN, Ramsey County, MN, Washington 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, 11.7 hours before the alert went out and 46 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
- 31 J/kg
- Mixed-layer CIN
- -254 J/kg
- Mixed-layer LCL
- 668 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 282345
FFWMSP
MNC037-123-163-290145-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MINNEAPOLIS MN
643 PM CDT SAT JUL 28 1990
THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 845 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN EAST CENTRAL MINNESOTA
...NORTHERN DAKOTA...EASTERN RAMSEY...SOUTHERN WASHINGTON
A NEARLY STATIONARY THUNDERSTORM IS DUMPING HEAVY RAIN OVER INVER
GROVE HEIGHTS..EAGAN AND APPLE VALLEY IN DAKOTA COUNTY THIS SATURDAY
EVENING. ALTHOUGH NO REPORTS HAVE BEEN RECEIVED..RADAR INTENSITY
SUGGESTS 1 TO 2 INCH PER HOUR RAINFALL RATES WHICH WILL FLOOD ROADWAYS
UNDERPASSES AND OTHER LOW LYING AREAS.
THIS IS A DANGEROUS SITUATION AS LITTLE INDICATION OF THUNDERSTORM
MOVEMENT CAN BE DETECTED. THE POTENTIAL FOR 3 TO 6 INCHES OF RAIN
EXITS OVER THE NEXT 2 TO 3 HOURS IF CONDITIONS PERSIST.
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.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
TOGSTADThe 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 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, 6:53 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.