Alert archive / Wisconsin / Flash Flood Warnings in 2009
Flash Flood Warning 8, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 13, 2009, 9:45 PM CDT for Dunn County, Pepin County, Pierce County, Wisconsin. It was in force for 3 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
- Aug 13, 2009, 9:45 PM CDT (02:45 UTC)
- Expired
- Aug 14, 2009, 12:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Dunn County, WI, Pepin County, WI, Pierce County, WI
The radar
The Minneapolis radar (KMPX), 117 km from the middle of the area, began a volume at 02:45 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 13, 9:55 PM CDT | FLASH FLOOD | 3 W Ellsworth, WI | STANDING WATER IN FARM FIELDS AND ON U.S. HIGHWAY 10. |
| Aug 13, 9:55 PM CDT | HEAVY RAIN 3.5 | 3 W Ellsworth, WI | ALSO REPORTED LOTS OF STANDING WATER IN SURROUNDING FARM FIELDS AND ON US 10 OUT OF ELLSWORTH. |
| Aug 13, 10:30 PM CDT | FLASH FLOOD | 4 Nnw Maiden Rock, WI | MUD SLIDE WAS REPORTED ALONG HIGHWAY A BETWEEN STATE ROAD 35 AND US 10. |
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, 2.8 hours before the alert went out and 120 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
- 68 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 1298 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KMPX 140245
FFWMPX
WIC033-091-093-140530-
/O.NEW.KMPX.FF.W.0008.090814T0245Z-090814T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
945 PM CDT THU AUG 13 2009
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN PEPIN COUNTY IN WEST CENTRAL WISCONSIN
PIERCE COUNTY IN WEST CENTRAL WISCONSIN
SOUTHERN DUNN COUNTY IN WEST CENTRAL WISCONSIN
* UNTIL 1230 AM CDT
* AT 942 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR INDICATES 2 TO 3 INCHES OF RAIN HAS FALLEN IN
THE PAST 2 HOURS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DURAND...ELLSWORTH...ARKANSAW...BAY CITY...BELDENVILLE...
CARYVILLE...EAU GALLE...ELMWOOD...ESDAILE...HAGER CITY...MAIDEN
ROCK...MARTEL...PLUM CITY...PORCUPINE AND ROCK FALLS.
SEVERAL ROADS ACROSS SOUTHERN PIERCE COUNTY HAVE BEEN CLOSED DUE TO
HIGH WATER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN
THE WARNED AREA THROUGH MIDNIGHT.
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 4459 9173 4459 9201 4455 9203 4454 9232
4456 9234 4457 9250 4462 9261 4486 9259
4485 9215 4483 9165 4460 9166
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:38 PM CDT | Special Weather Statement | MPX | Pierce | 37 min |
| Aug 13, 8:40 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 35 min |
| Aug 13, 10:16 PM CDT | Special Weather Statement | MPX | Pepin | 44 min |
| Aug 13, 10:27 PM CDT | Flash Flood Warning | MPX | Chippewa, Eau Claire | 4 hr |
| Aug 13, 11:05 PM CDT | Special Weather Statement | MPX | Chippewa, Eau Claire | 55 min |
| Aug 14, 12:11 AM CDT | Flash Flood Warning | MPX | Dunn, Pepin, Pierce | 6 hr |
| Aug 14, 12:43 AM CDT | Special Weather Statement | MPX | Pepin | 47 min |
Nearby
Flash Flood Warnings in Wisconsin, 2009Every flash flood warning in 2009
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.