Flash Flood Warning 5, NWS Twin Cities, MN

Issued

May 27, 2012, 9:46 PM CDT (02:46 UTC)

Expired

May 28, 2012, 3:30 AM CDT

In force

6 hr

Issued by

NWS Twin Cities, MN

Area

Storm-based polygon

Flood severity

None

Counties Anoka County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Ramsey County, MN, Scott County, MN

The Minneapolis radar (KMPX), 24 km from the middle of the area, began a volume at 02:48 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.

731 
WGUS53 KMPX 280246
FFWMPX
MNC003-019-025-037-053-059-123-139-280830-
/O.NEW.KMPX.FF.W.0005.120528T0246Z-120528T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
946 PM CDT SUN MAY 27 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  CARVER COUNTY IN EAST CENTRAL MINNESOTA...
  HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHWESTERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...
  SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
  WESTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 330 AM CDT

* AT 939 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUE TO     
  DEVELOP AND MOVE ACROSS THE WARNED AREA. DOPPLER RADAR RAINFALL    
  RATES ARE RANGING FROM 1 TO 2 INCHES AN HOUR.  ADDITIONAL RAINFALL 
  THROUGH 6 AM MONDAY COULD EXCEED 2 INCHES IN SOME AREAS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CAMBRIDGE...MINNEAPOLIS...NORTH BRANCH...PLYMOUTH...ST PAUL...
  ANDOVER...ANOKA...APPLE VALLEY...ARDEN HILLS...BELLE PLAINE...
  BLAINE...BLOOMINGTON...BODUM...BRAHAM...BRANCH...BROOKLYN CENTER...
  BROOKLYN PARK...BURNSVILLE...CARVER...CEDAR...CENTERVILLE...
  CHAMPLIN...CHANHASSEN...CHASKA...CHISAGO CITY...CIRCLE PINES...
  COATES...COLOGNE...COLUMBIA HEIGHTS AND COON RAPIDS.

URBAN AREAS WILL BE PARTICULARLY PRONE TO FLASH FLOODING AS SEWERS 
WILL BECOME OVERWHELMED. WATER WILL POOL IN LOW LYING AREAS... 
HIGHWAY UNDERPASSES AS WELL AS ROAD CONSTRUCTION AREAS. MUDSLIDES 
ARE ALSO POSSIBLE ESPECIALLY IN AREAS OF CONSTRUCTION. SMALL CREEKS 
AND STREAMS WILL RISE QUICKLY DUE TO THE INTENSE RAINFALL.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4572 9286 4530 9290 4529 9302 4513 9302
      4510 9297 4473 9301 4454 9325 4454 9389
      4463 9385 4463 9377 4467 9376 4473 9400
      4497 9401 4497 9377 4523 9352 4574 9352

$$

DFC/DWE

715 
WGUS73 KMPX 280649
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
149 AM CDT MON MAY 28 2012

MNC003-019-025-037-053-059-123-139-280830-
/O.CON.KMPX.FF.W.0005.000000T0000Z-120528T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ANOKA MN-CARVER MN-CHISAGO MN-DAKOTA MN-HENNEPIN MN-ISANTI MN-
RAMSEY MN-SCOTT MN-
149 AM CDT MON MAY 28 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SCOTT...RAMSEY...
ISANTI...HENNEPIN...NORTHWESTERN DAKOTA...WESTERN CHISAGO...CARVER
AND ANOKA COUNTIES UNTIL 330 AM CDT...

AT 146 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE MAIN AREA OF INTENSE THUNDERSTORMS WITH VERY HEAVY RAINFALL 
HAD MOVED NORTHEAST OF THE TWIN CITIES METRO. HOWEVER ANOTHER AREA 
OF RAIN WITH SOME MODERATE RAINFALL OF RAIN RATES UP TO A HALF AN 
INCH IN AN HOUR WILL MOVE ACROSS THIS AREA THROUGH THE EARLY MORNING 
HOURS. THIS COMBINED WITH THE BROAD AREA OF 0.75 TO 1.75 INCHES OF 
RAIN RECEIVED EARLIER THIS EVENING WILL CONTINUE TO AGGRAVATE 
FLOODING PROBLEMS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING 
INCLUDE...CAMBRIDGE...MINNEAPOLIS...NORTH BRANCH...PLYMOUTH...ST 
PAUL...ANDOVER...ANOKA...APPLE VALLEY...ARDEN HILLS...BELLE PLAINE...
BLAINE...BLOOMINGTON...BODUM...BRAHAM...BRANCH...BROOKLYN 
CENTER...BROOKLYN PARK...BURNSVILLE...CARVER...CEDAR...CENTERVILLE...
CHAMPLIN...CHANHASSEN...CHASKA...CIRCLE 
PINES...COATES...COLOGNE...COLUMBIA HEIGHTS...COON RAPIDS AND 
CORCORAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...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 4572 9286 4530 9290 4529 9302 4513 9302
      4510 9297 4473 9301 4454 9325 4454 9389
      4463 9385 4463 9377 4467 9376 4473 9400
      4497 9401 4497 9377 4523 9352 4574 9352

$$

DFC

Flash Flood Warnings in Minnesota, 2012Every flash flood warning in 2012

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.