Alert archive / Minnesota / Flash Flood Warnings in 2010

Flash Flood Warning 2, NWS Twin Cities, MN

March 16, 2010Morrison County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Mar 16, 2010, 5:29 PM CDT for Morrison County, Minnesota. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 16, 2010, 5:29 PM CDT (22:29 UTC)
Expired: Mar 16, 2010, 9:58 PM CDT
In force: 4 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 180 km from the middle of the area, began a volume at 22:32 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 179 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 454 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 39 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.

671 
WGUS53 KMPX 162229
FFWMPX
MNC097-170430-
/O.NEW.KMPX.FF.W.0002.100316T2229Z-100317T0430Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
529 PM CDT TUE MAR 16 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR AN ICE JAM AND SNOW MELT IN...
  EXTREME NORTHWESTERN MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 1130 PM CDT

* AT 522 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH   
  FLOODING ALONG THE CROW WING RIVER...ABOUT 2 MILES EAST OF MOTLEY.
  ONE RESIDENT WAS RESCUED FROM HER HOME ON AZALEA ROAD OR COUNTY
  HIGHWAY 28. AN OFFICER REPORTED WATER WAS RISING QUICKLY AND WATER 
  WAS MOVING AROUND THE ICE JAM. PEOPLE ALONG AND UPSTREAM OF LAKE
  PLACID ARE ENCOURAGED TO MONITOR WATER LEVELS FOR ANY DRAMATIC
  CHANGES...AND EVACUATE AS NECESSARY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...MOTLEY AND 
  RURAL AREAS AROUND LAKE PLACID.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN THE
TWIN CITIES.

&&

LAT...LON 4632 9458 4630 9454 4631 9451 4629 9449
      4626 9451 4627 9465 4634 9465 4634 9464

$$

JPR/DFC

1 follow-up statement

500 
WGUS73 KMPX 170258
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
958 PM CDT TUE MAR 16 2010

MNC097-170254-
/O.CAN.KMPX.FF.W.0002.000000T0000Z-100317T0430Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORRISON MN-
958 PM CDT TUE MAR 16 2010

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT EXTREME NORTHWESTERN
MORRISON COUNTY IS CANCELLED...

AT 930 PM...LOCAL LAW ENFORCEMENT OFFICIALS REPORT THAT HIGH WATER
HAS RECEDED AROUND THE AREA OF THE EVACUATION...THAT TOOK PLACE LATE 
THIS AFTERNOON. ICE DEBRIS WAS SCATTERED AROUND THE AREA WHERE THE 
WATER RECEDED...THUS IT APPEARS THAT THE ICE JAM HAS BROKEN UP. 

EVEN THOUGH THE IMMEDIATE THREAT HAS ENDED...THERE ARE STILL REPORTS 
OF ICE IN THE CROW WING RIVER SYSTEM. ADDITIONAL ICE JAMS COULD 
STILL OCCUR.   

LAT...LON 4632 9458 4630 9454 4631 9451 4629 9449
      4626 9451 4627 9465 4634 9465 4634 9464

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 2:01 PM CDT	River Flood Warning	MPX	Blue Earth, Nicollet	13 days

Nearby

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

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; radar from the NEXRAD Level II archive.