Alert archive / Wisconsin / Flash Flood Warnings in 2013

Flash Flood Warning 10, NWS Twin Cities, MN

June 21, 2013Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this flash flood warning at Jun 21, 2013, 8:27 PM CDT for Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin. It was in force for 4 hr. 9 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 21, 2013, 8:27 PM CDT (01:27 UTC)
Expired
Jun 22, 2013, 12:30 AM CDT
In force
4 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

Counties Washington County, MN, Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 69 km from the middle of the area, began a volume at 01:30 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 21, 8:40 PM CDTFLOODOakdale, MN2 FEET WATER ON GRANADA BETWEEN STILLWATER BLVD AND HADLEY.
Jun 21, 8:45 PM CDTHEAVY RAIN 0Hudson, WI6 INCHES WATER 4TH AND LOCUST. SMALL BRANCHES 3 TO 4 INCHES DOWN.
Jun 21, 8:50 PM CDTHEAVY RAIN 2.284 Ese Hudson, WIFELL IN 30 MIN PERIOD.
Jun 21, 8:57 PM CDTHEAVY RAIN 1.48Hudson, WIFELL IN A 40 MINUTE PERIOD.
Jun 21, 8:59 PM CDTHEAVY RAIN 0Baldwin, WI6 INCHES WATER ON ROAD HWY 63 AND HWY 12 N OF TOWN.
Jun 21, 9:13 PM CDTHEAVY RAIN 1.55 S Hammond, WIFELL IN 50 MINUTE PERIOD.
Jun 21, 9:15 PM CDTFLOODOakdale, MNNUMEROUS INTERSECTIONS UNDER WATER.
Jun 21, 9:30 PM CDTFLASH FLOOD2 S Roberts, WIHIGH WATER RESCUES AT EXIT 10 ON I 94. TIME ESTIMATED
Jun 21, 9:30 PM CDTFLASH FLOOD4 Nw Spring Valley, WIROAD WASHED OUT ON CR BB JUST SOUTH OF 30TH AVE.TIME OF EVENT ESTIMATED

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, 1.5 hours before the alert went out and 71 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 2013-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 971 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 2013-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.1939Sfc1 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
971 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

202 
WGUS53 KMPX 220127
FFWMPX
MNC163-WIC093-109-220530-
/O.NEW.KMPX.FF.W.0010.130622T0127Z-130622T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
827 PM CDT FRI JUN 21 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN...
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 1230 AM CDT

* AT 827 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ELLSWORTH...NEW RICHMOND...RIVER FALLS...HUDSON AND STILLWATER.

FLASH FLOODING HAS BEEN OBSERVED  WITH THESE STORMS UPSTREAM ACROSS 
THE TWIN CITIES METRO AREA.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

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 4475 9285 4478 9289 4477 9301 4489 9302
      4490 9298 4512 9298 4513 9302 4517 9302
      4521 9275 4520 9215 4512 9215 4512 9213
      4471 9214

$$

SPD
1 follow-up statement
233 
WGUS73 KMPX 220349
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1049 PM CDT FRI JUN 21 2013

MNC163-WIC093-109-220530-
/O.CON.KMPX.FF.W.0010.000000T0000Z-130622T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON MN-ST. CROIX WI-PIERCE WI-
1049 PM CDT FRI JUN 21 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN PIERCE...ST.
CROIX AND WASHINGTON COUNTIES UNTIL 1230 AM CDT...

AT 1043 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH 
FLOODING WAS OCCURRING ACROSS ST. CROIX COUNTY.  ROADS HAVE BEEN 
WASHED OUT ACROSS THE COUNTY...INCLUDING A BRIDGE. THE EASTBOUND 
LANE OF INTERSTATE 94 JUST SOUTH OF ROBERTS HAS BEEN CLOSED DUE TO 
FLOODING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ELLSWORTH...
NEW RICHMOND...RIVER FALLS...HUDSON AND STILLWATER.

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.

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.

&&

LAT...LON 4475 9285 4478 9289 4477 9301 4489 9302
      4490 9298 4512 9298 4513 9302 4517 9302
      4521 9275 4520 9215 4512 9215 4512 9213
      4471 9214

$$

SPD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:13 PM CDTSevere Thunderstorm WarningMPXHennepin62 min
Jun 21, 7:37 PM CDTFlash Flood WarningMPXAnoka, Dakota, Hennepin, Ramsey3 hr
Jun 21, 7:48 PM CDTSevere Thunderstorm WarningMPXAnoka, Dakota, Ramsey, Washington42 min
Jun 21, 8:04 PM CDTSevere Thunderstorm WarningMPXNicollet41 min
Jun 21, 8:25 PM CDTSevere Thunderstorm WarningMPXDakota, Washington20 min
Jun 21, 8:38 PM CDTSpecial Weather StatementMPXGoodhue67 min
Jun 21, 8:38 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Nicollet52 min
Jun 21, 8:58 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Scott, Sibley47 min
Jun 21, 9:05 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Wright40 min
Jun 21, 9:32 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice43 min
Jun 21, 9:37 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville53 min
Jun 21, 9:51 PM CDTFlash Flood WarningMPXKandiyohi, Redwood, Renville, Yellow Medicine6 hr
Jun 21, 10:33 PM CDTFlash Flood WarningMPXAnoka, Dakota, Hennepin, Ramsey6 hr
Jun 21, 10:51 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley39 min
Jun 21, 10:56 PM CDTFlash Flood WarningMPXBrown, McLeod, Nicollet, Redwood, Renville, Sibley6 hr
Jun 21, 11:09 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Scott, Sibley51 min
Jun 21, 11:35 PM CDTFlash Flood WarningMPXBrown, Martin, Watonwan6 hr
Jun 21, 11:40 PM CDTFlash Flood WarningMPXFaribault, Freeborn6 hr
Jun 22, 12:46 AM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Martin44 min
Jun 22, 1:29 AM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn61 min
Jun 22, 5:11 PM CDTSpecial Weather StatementMPXRice49 min
Jun 22, 6:12 PM CDTFlash Flood WatchMPXAnoka, Blue Earth, Brown, Carver, Chippewa, Douglas and 22 more16 hr
Jun 21, 8:11 PM CDTSevere Thunderstorm WarningMPXPierce, Saint Croix64 min
Jun 21, 8:57 PM CDTSpecial Weather StatementMPXChippewa, Dunn, Eau Claire78 min
Jun 21, 9:02 PM CDTFlash Flood WarningMPXDunn, Saint Croix3 hr
Jun 21, 9:26 PM CDTFlash Flood WarningMPXChippewa, Eau Claire3 hr

Nearby

Flash Flood Warnings in Wisconsin, 2013Flash Flood Warnings in Minnesota, 2013Every flash flood warning in 2013

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.