Alert archive / Wisconsin / Flash Flood Warnings in 2009
Flash Flood Warning 10, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 14, 2009, 12:11 AM CDT for Dunn County, Pepin County, Pierce County, Wisconsin. It was in force for 6 hr. 7 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 14, 2009, 12:11 AM CDT (05:11 UTC)
- Expired
- Aug 14, 2009, 6:00 AM CDT
- In force
- 6 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), 115 km from the middle of the area, began a volume at 05:13 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 14, 1:30 AM CDT | FLASH FLOOD | Arkansaw, WI | NUMEROUS ROAD CLOSURES IN TOWN. AN EXPERIMENTAL FARM REPORTED 6.5 INCHES OF RAIN WITHIN TWO HOURS. |
| Aug 14, 2:00 AM CDT | FLASH FLOOD | Plum City, WI | RAINFALL OF 5.50 INCHES |
| Aug 14, 2:00 AM CDT | HEAVY RAIN 5.5 | Plum City, WI | |
| Aug 14, 3:00 AM CDT | FLASH FLOOD | 3 Nnw Maiden Rock, WI | 4.50 INCHES...TOTAL RAINFALL |
| Aug 14, 3:00 AM CDT | FLASH FLOOD | 3 S Arkansaw, WI | ROADS WASHED OUT IN FRANKFORT TOWNSHIP. |
| Aug 14, 3:00 AM CDT | HEAVY RAIN 4.5 | 3 Nnw Maiden Rock, WI | |
| Aug 14, 6:10 AM CDT | HEAVY RAIN 7.34 | 4 Nw Arkansaw, WI | MEASURED BY COCORAHS OBSERVER. |
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, 5.2 hours before the alert went out and 118 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 140511
FFWMPX
WIC033-091-093-141100-
/O.NEW.KMPX.FF.W.0010.090814T0511Z-090814T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1211 AM CDT FRI AUG 14 2009
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN PEPIN COUNTY IN WEST CENTRAL WISCONSIN
PIERCE COUNTY IN WEST CENTRAL WISCONSIN
SOUTHERN DUNN COUNTY IN WEST CENTRAL WISCONSIN
* UNTIL 600 AM CDT
* AT MIDNIGHT CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR ESTIMATED STORM TOTAL RAINFALL OF 5 TO 7 INCHES
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DURAND...ELLSWORTH...BAY CITY...ARKANSAW..CARYVILLE...EAU GALLE...
ELMWOOD...ESDAILE...MAIDEN ROCK...MARTEL...PLUM CITY...PORCUPINE
AND ROCK FALLS.
SEVERAL REPORTS OF PONDING OF WATER ON ROADWAYS HAVE BEEN RECEIVED ACROSS
THE WARNED AREA...ALONG WITH A MUDSLIDE NORTHWEST OF MAIDEN ROCK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
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 9166 4459 9201 4455 9203 4454 9232
4456 9234 4457 9250 4462 9261 4486 9259
4483 9165
$$1 follow-up statement
000
WGUS73 KMPX 140650
FFSMPX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
150 AM CDT FRI AUG 14 2009
WIC093-140701-
/O.CAN.KMPX.FF.W.0010.000000T0000Z-090814T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIERCE WI-
150 AM CDT FRI AUG 14 2009
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR PIERCE COUNTY IS
CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. IF
FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
LAT...LON 4460 9196 4458 9202 4455 9203 4456 9214
4484 9213 4484 9184 4483 9184 4483 9165
4461 9166
$$
WIC033-091-141100-
/O.CON.KMPX.FF.W.0010.000000T0000Z-090814T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUNN WI-PEPIN WI-
150 AM CDT FRI AUG 14 2009
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN PEPIN AND
SOUTHERN DUNN COUNTIES UNTIL 600 AM CDT...
AT 142 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
DOPPLER RADAR BETWEEN FOUR TO SEVEN INCHES OF RAIN HAD FALLEN SINCE
10 PM. ADDITIONAL RAINFALL AMOUNT THROUGH 330 AM COULD EXCEED OVER
TWO INCHES.
SLOW MOVING THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL IN THE
WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
INCLUDE...DURAND...ARKANSAW...CARYVILLE...EAU GALLE...PORCUPINE AND
ROCK FALLS.
AT 145 AM...LAW ENFORCEMENT OFFICER REPORTED NUMEROUS ROADS HAD BEEN
WASHED OUT OVER PARTS OF SOUTHERN PEPIN COUNTY.
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 4460 9196 4458 9202 4455 9203 4456 9214
4484 9213 4484 9184 4483 9184 4483 9165
4461 9166
$$
JVMThe 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, 9:45 PM CDT | Flash Flood Warning | MPX | Dunn, Pepin, Pierce | 3 hr |
| 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, 12:43 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.