Alert archive / Wisconsin / Flash Flood Warnings in 2011
Flash Flood Warning 16, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 16, 2011, 8:50 PM CDT for 6 counties in Wisconsin. 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
- Aug 16, 2011, 8:50 PM CDT (01:50 UTC)
- Expired
- Aug 17, 2011, 1:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Saint Croix County, WI
The radar
The La Crosse radar (KARX), 121 km from the middle of the area, began a volume at 01:52 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 00:00Z, 1.8 hours before the alert went out and 136 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.
- Mixed-layer CAPE
- 522 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
597
WGUS53 KMPX 170150
FFWMPX
WIC017-033-035-091-093-109-170600-
/O.NEW.KMPX.FF.W.0016.110817T0150Z-110817T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
850 PM CDT TUE AUG 16 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN...
DUNN COUNTY IN WEST CENTRAL WISCONSIN...
EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...
PEPIN COUNTY IN WEST CENTRAL WISCONSIN...
PIERCE COUNTY IN WEST CENTRAL WISCONSIN...
ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 100 AM CDT
* AT 847 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RAINFALL RATES OF 2 TO 3 INCHES PER HOUR ARE LIKELY
WITH THESE STORMS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHIPPEWA FALLS...DURAND...EAU CLAIRE...ELLSWORTH...MENOMONIE...NEW
RICHMOND...RIVER FALLS...ALTOONA...ARKANSAW...BALDWIN...BATEMAN...
BAY CITY...BELDENVILLE...BLOOMER...BOYCEVILLE...BOYD...BRACKETT...
BURKHARDT...CADOTT...CARYVILLE...COLFAX...CONNORSVILLE...CORNELL...
CYLON...DEER PARK...EAGLETON...EAU GALLE...ELK MOUND...ELLA AND
ELMWOOD.
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 4460 9093 4460 9202 4441 9209 4451 9230
4456 9233 4455 9240 4474 9278 4520 9274
4520 9157 4529 9154 4529 9092
$$1 follow-up statement
589
WGUS73 KMPX 170424
FFSMPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1124 PM CDT TUE AUG 16 2011
WIC017-109-170437-
/O.CAN.KMPX.FF.W.0016.000000T0000Z-110817T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHIPPEWA WI-ST. CROIX WI-
1124 PM CDT TUE AUG 16 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR ST. CROIX AND
CHIPPEWA COUNTIES IS CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 4460 9094 4460 9201 4442 9210 4450 9228
4456 9233 4456 9243 4475 9279 4485 9273
4484 9092
$$
WIC033-035-091-093-170600-
/O.CON.KMPX.FF.W.0016.000000T0000Z-110817T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUNN WI-EAU CLAIRE WI-PEPIN WI-PIERCE WI-
1124 PM CDT TUE AUG 16 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR PIERCE...PEPIN...EAU
CLAIRE AND SOUTHERN DUNN COUNTIES IN WEST CENTRAL WISCONSIN UNTIL 100
AM CDT...
AT 1122 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
RAINFALL RATES OF 2 TO 3 INCHES AN HOUR ARE POSSIBLE AS THE STORMS
MOVE THROUGH.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DURAND...EAU CLAIRE...ELLSWORTH...ALTOONA...ARKANSAW...BAY CITY...
BELDENVILLE...BRACKETT...CARYVILLE...EAU GALLE...ELLA...ELMWOOD...
ESDAILE...FAIRCHILD...FALL CREEK...FOSTER...LUDINGTON...MAIDEN
ROCK...MARTEL...PEPIN...PLUM CITY...PORCUPINE...ROCK FALLS AND SPRING
VALLEY.
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 4460 9094 4460 9201 4442 9210 4450 9228
4456 9233 4456 9243 4475 9279 4485 9273
4484 9092
$$Nearby
Flash Flood Warnings in Wisconsin, 2011Every flash flood warning in 2011
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.