Alert archive / Minnesota / Flash Flood Warnings in 2006

Flash Flood Warning 10, NWS Twin Cities, MN

June 16, 2006Anoka County, Hennepin County, Ramsey County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jun 16, 2006, 7:55 PM CDT for Anoka County, Hennepin County, Ramsey County, Minnesota. It was in force for 6 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 16, 2006, 7:55 PM CDT (00:55 UTC)
Expired
Jun 17, 2006, 1:45 AM CDT
In force
6 hr
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Anoka County, MN, Hennepin County, MN, Ramsey County, MN

The radar

The Minneapolis radar (KMPX), 25 km from the middle of the area, began a volume at 00:57 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.

What was reported inside it

TimeReportWhereRemark
Jun 16, 8:30 PM CDTFLASH FLOODMinneapolis, MNMANHOLE COVERS BLOWN AND WATER OVER SEVERAL ROADWAYS NEAR AND AT 9TH AND MARQUETTE STREETS
Jun 16, 8:42 PM CDTFLASH FLOODOsseo, MNFLOODED ROADS IN TOWN.
Jun 16, 9:35 PM CDTFLASH FLOODSt Paul, MNONE TO TWO FEET OF WATER OVER SEVERAL ROADWAYS ON SOUTH SIDE OF CITY.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.9 hours before the alert went out and 26 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2006-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 576 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2006-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
576 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
946 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KMPX 170055
FFWMPX
MNC003-053-123-170645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
755 PM CDT FRI JUN 16 2006

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 145 AM CDT

* AT 750 PM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY HEAVY
  RAIN ACROSS MUCH OF THE WARNED AREA.  SOME STORMS HAD ALREADY
  MOVED ACROSS THE CENTRAL AND NORTHERN TWIN CITIES AREA...AND MORE
  STORMS TO THE SOUTHWEST WILL CONTINUE MOVING OVER THE METRO
  THROUGH 10 OR 11 PM.  SEVERAL INCHES OF RAIN ARE POSSIBLE FROM
  THE INCOMING STORMS... AND THE WATERS MAY NOT GO DOWN UNTIL A
  COUPLE HOURS AFTER THE RAIN ENDS.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...MINNEAPOLIS... 
  ST PAUL... COLUMBIA HEIGHTS... ROSEVILLE... EDINA... 
  COON RAPIDS...BLOOMINGTON...BROOKLYN CENTER...AND MAPLEWOOD.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER
CAN CARRY AWAY MOST VEHICLES INCLUDING SPORT UTILITY VEHICLES AND
PICKUPS.

LAT...LON 4505 9371 4480 9336 4495 9305 4528 9304

$$

TDK
2 follow-up statements
000 
WGUS73 KMPX 170234
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
930 PM CDT FRI JUN 16 2006

MNC003-053-123-170645-
ANOKA MN-HENNEPIN MN-RAMSEY MN-
930 PM CDT FRI JUN 16 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR
RAMSEY...HENNEPIN AND ANOKA COUNTIES...

AT 930 PM CDT...TRAINED SPOTTERS REPORTED FLOODED ROADS IN THE TOWN 
OF OSSEO IN HENNEPIN COUNTY.

AT 930 PM CDT...THUNDERSTORMS CONTINUED TO MOVE SLOWLY TO THE 
NORTHEAST THROUGH ANOKA...HENNEPIN...AND RAMSEY COUNTIES. ALTHOUGH 
THE RAINFALL RATES HAVE DECREASED DURING THE PAST HOUR...ANY 
ADDITIONAL RAINFALL WILL WORSEN THE FLOODING ALREADY OCCURRING. 
ADDITIONAL THUNDERSTORMS NEAR THE IOWA BORDER WILL ALSO MOVE TOWARD 
THE TWIN CITIES METRO AREA TOWARD MIDNIGHT...WHICH COULD ALSO WORSEN 
THE FLOODING.

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

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER
CAN CARRY AWAY MOST VEHICLES INCLUDING SPORT UTILITY VEHICLES AND
PICKUPS. MOVE TO HIGHER GROUND.

LAT...LON 4505 9371 4480 9336 4495 9305 4528 9304

$$

KAT
000 
WGUS73 KMPX 170346
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1046 PM CDT FRI JUN 16 2006

MNC003-053-123-170356-
ANOKA MN-HENNEPIN MN-RAMSEY MN-
1046 PM CDT FRI JUN 16 2006

...THE FLASH FLOOD WARNING FOR RAMSEY...HENNEPIN AND ANOKA COUNTIES
HAS BEEN CANCELLED...

LOCAL LAW ENFORCEMENT INDICATED THAT WATER LEVELS HAVE RECEDED IN 
THE WARNED AREA. THEREFORE...THE FLASH FLOOD WARNING FOR SCOTT 
COUNTY HAS BEEN CANCELLED. AN ESTIMATED 1 TO 2 INCHES OF RAIN FELL 
ACROSS THE WARNED AREA THIS EVENING.

LAT...LON 4505 9371 4480 9336 4495 9305 4528 9304

$$

KAT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 7:09 PM CDTSevere Thunderstorm WarningMPXMille Lacs24 min
Jun 16, 7:20 PM CDTFlash Flood WarningMPXBlue Earth, Le Sueur, Nicollet6 hr
Jun 16, 8:20 PM CDTFlash Flood WarningMPXScott5 hr

Nearby

Flash Flood Warnings in Minnesota, 2006Every flash flood warning in 2006

Sources

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.