Flash Flood Warning 22, NWS Twin Cities, MN

Issued

Sep 22, 2010, 7:44 PM CDT (00:44 UTC)

Expired

Sep 23, 2010, 1:30 AM CDT

In force

6 hr

Issued by

NWS Twin Cities, MN

Area

Storm-based polygon

Flood severity

None

Counties Brown County, MN, Redwood County, MN

The Minneapolis radar (KMPX), 140 km from the middle of the area, began a volume at 00:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

569 
WGUS53 KMPX 230044
FFWMPX
MNC015-127-230630-
/O.NEW.KMPX.FF.W.0022.100923T0044Z-100923T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
744 PM CDT WED SEP 22 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BROWN COUNTY IN SOUTH CENTRAL MINNESOTA
  REDWOOD COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 130 AM CDT

* AT 741 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.     
  BETWEEN 1 AND 3 INCHES OF RAIN HAS FALLEN SINCE 6 PM CDT... AND    
  INDICATIONS ARE THAT ANOTHER 1 TO 3 INCHES OF RAIN COULD OCCUR     
  THROUGH 10 PM CDT AS ADDITIONAL STORMS MOVE OVER THE SAME AREAS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLEMENTS...EVAN...HANSKA...LAMBERTON...LUCAN...REVERE...SANBORN...
  SEAFORTH...SLEEPY EYE...SPRINGFIELD AND WABASSO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 4450 9559 4448 9517 4433 9462 4411 9444
      4411 9511 4419 9512 4419 9557

$$

TRH

131 
WGUS73 KMPX 230140
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
840 PM CDT WED SEP 22 2010

MNC015-127-230630-
/O.CON.KMPX.FF.W.0022.000000T0000Z-100923T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
REDWOOD MN-BROWN MN-
840 PM CDT WED SEP 22 2010

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WESTERN BROWN AND 
SOUTHERN REDWOOD COUNTIES UNTIL 130 AM CDT...

IN ADDITION... A FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1230 AM CDT 
FOR THE REMAINDER OF REDWOOD AND BROWN COUNTIES.

AT 833 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
DOPPLER RADAR AND SURFACE OBSERVATIONS INDICATED THAT BETWEEN 2 AND 
3 INCHES OF RAIN HAS FALLEN OVER THE WARNED AREA SINCE 6 PM CDT... 
WITH LOCAL AMOUNTS NEAR 4 INCHES. AN ADDITIONAL INCH OR MORE OF RAIN 
IS POSSIBLE THROUGH THE REMAINDER OF THE EVENING.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO 
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...WALNUT 
GROVE...REVERE...LAMBERTON... SPRINGFIELD...COBDEN... SLEEPY EYE... 
AND LEAVENWORTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4450 9559 4448 9517 4433 9462 4411 9444
      4411 9511 4419 9512 4419 9557

$$

Flash Flood Warnings in Minnesota, 2010Every flash flood warning in 2010

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.