Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 13, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Jul 23, 2016, 2:57 PM CDT for Crawford County, Wisconsin; Allamakee County, Clayton County, Iowa. It was in force for 3 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
- Jul 23, 2016, 2:57 PM CDT (19:57 UTC)
- Expired
- Jul 23, 2016, 6:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Allamakee County, IA, Clayton County, IA, Crawford County, WI
The radar
The La Crosse radar (KARX), 93 km from the middle of the area, began a volume at 19:58 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
Davenport, (KDVN), launched 12:00Z, 8.0 hours before the alert went out and 162 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
- 2607 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
098
WGUS53 KARX 231957
FFWARX
IAC005-043-WIC023-232300-
/O.NEW.KARX.FF.W.0013.160723T1957Z-160723T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
257 PM CDT SAT JUL 23 2016
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN CLAYTON COUNTY IN NORTHEASTERN IOWA...
SOUTHWESTERN ALLAMAKEE COUNTY IN NORTHEASTERN IOWA...
SOUTHWESTERN CRAWFORD COUNTY IN SOUTHWESTERN WISCONSIN...
* UNTIL 600 PM CDT
* AT 253 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED ROAD WASH
OUTS ACROSS NORTHERN CLAYTON COUNTY. THREE TO FIVE INCHES OF RAIN
HAVE ALREADY FALLEN. AN ADDITIONAL ONE TO TWO INCHES OF RAIN ARE
EXPECTED THROUGH 6 PM. FLASH FLOODING WILL CONTINUE TO OCCUR OR IS
EXPECTED TO BEGIN SHORTLY.
* CAMPERS NEAR RIVERS AND STREAMS SHOULD CONSIDER EVACUATION AS
WATER LEVELS WILL RISE RAPIDLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PRAIRIE DU CHIEN...ELKADER...POSTVILLE...MONONA...MCGREGOR...
MARQUETTE...FARMERSBURG...VOLGA...HARDIN...BRIDGEPORT...WAUZEKA...
LUANA...AND ST. OLAF.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 4282 9161 4320 9160 4310 9081 4308 9085
4306 9091 4306 9094 4303 9097 4300 9106
4300 9113 4299 9116 4298 9129 4274 9128
$$
ROGERS2 follow-up statements
579
WGUS73 KARX 232121
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
421 PM CDT SAT JUL 23 2016
IAC005-043-WIC023-232300-
/O.CON.KARX.FF.W.0013.000000T0000Z-160723T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-ALLAMAKEE IA-CRAWFORD WI-
421 PM CDT SAT JUL 23 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
WESTERN CLAYTON...SOUTHWESTERN ALLAMAKEE AND SOUTHWESTERN CRAWFORD
COUNTIES...
AT 416 PM CDT...DOPPLER RADAR INDICATED THREE TO FIVE INCHES OF RAIN
HAVE ALREADY FALLEN ACROSS THE WARNED AREA. WHILE THE HEAVIEST
RAINFALL HAS NOW MOVED EASTWARD INTO FAR SOUTHWEST WISCONSIN, AN
ADDITIONAL HALF INCH OF RAIN IS POSSIBLE THROUGH 600 PM. FLASH
FLOODING WILL CONTINUE AS WATER MOVES INTO AND THROUGH THE RIVER
SYSTEM.
CAMPERS NEAR RIVERS AND STREAMS SHOULD CONSIDER EVACUATION AS WATER
LEVELS RISE RAPIDLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PRAIRIE DU CHIEN...ELKADER...POSTVILLE...MONONA...MCGREGOR...
MARQUETTE...FARMERSBURG...VOLGA...HARDIN...BRIDGEPORT...AND WAUZEKA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 4282 9161 4320 9160 4310 9081 4308 9085
4306 9091 4306 9094 4303 9097 4300 9106
4300 9113 4299 9116 4298 9129 4274 9128
$$
ROGERS545
WGUS73 KARX 232219
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
519 PM CDT SAT JUL 23 2016
IAC005-043-WIC023-232227-
/O.CAN.KARX.FF.W.0013.000000T0000Z-160723T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-ALLAMAKEE IA-CRAWFORD WI-
519 PM CDT SAT JUL 23 2016
...THE FLASH FLOOD WARNING FOR WESTERN CLAYTON...SOUTHWESTERN
ALLAMAKEE AND SOUTHWESTERN CRAWFORD COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED. AS WATER MOVES INTO AND THROUGH THE RIVER
SYSTEM...CONTINUE TO MONITOR RIVER LEVELS AND BE PREPARED TO SEEK
HIGHER GROUND IF NECESSARY. PLEASE CONTINUE TO HEED ANY REMAINING
ROAD CLOSURES...AS THERE HAVE BEEN REPORTS OF SOME ROAD WASH OUTS
ACROSS PORTIONS OF NORTHEAST IOWA.
LAT...LON 4282 9161 4320 9160 4310 9081 4308 9085
4306 9091 4306 9094 4303 9097 4300 9106
4300 9113 4299 9116 4298 9129 4274 9128
$$
ROGERSThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 8:54 AM CDT | Special Weather Statement | ARX | La Crosse, Vernon | 36 min |
| Jul 23, 10:29 AM CDT | Special Weather Statement | ARX | Buffalo | 61 min |
| Jul 23, 11:32 AM CDT | Special Weather Statement | ARX | Grant | 58 min |
| Jul 23, 12:03 PM CDT | Flash Flood Warning | ARX | Grant | 6 hr |
| Jul 23, 2:51 PM CDT | Special Weather Statement | ARX | La Crosse | 24 min |
| Jul 23, 2:04 PM CDT | Flash Flood Warning | ARX | Chickasaw, Fayette, Howard, Winneshiek | 3 hr |
| Jul 23, 5:08 PM CDT | Special Weather Statement | ARX | Dubuque | 37 min |
Nearby
Flash Flood Warnings in Iowa, 2016Flash Flood Warnings in Wisconsin, 2016Every flash flood warning in 2016
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.