Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 59, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Sep 23, 2016, 12:00 AM CDT for 4 counties in Iowa. It was in force for 5 hr. 2 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
- Sep 23, 2016, 12:00 AM CDT (05:00 UTC)
- Expired
- Sep 23, 2016, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA
The radar
The La Crosse radar (KARX), 125 km from the middle of the area, began a volume at 05:02 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 |
|---|---|---|---|
| Sep 23, 12:23 AM CDT | FLASH FLOOD | 1 Wnw Oelwein, IA | STREET FLOODING ON CHARLES ST W BETWEEN 6TH AND 7TH AVENUES. OTTER CREEK ALSO RISING IN RED GATE PARK. |
| Sep 23, 1:19 AM CDT | FLASH FLOOD | 1 Ene Oelwein, IA | ROAD WASHOUT NEAR OUTER ROAD AND 6TH ST. NE. STREET FLOODING IN THE CITY OF OELWEIN AND FLOODING IN THE CITY PARKS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 5.0 hours before the alert went out and 187 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
- 580 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 1227 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
080
WGUS53 KARX 230500
FFWARX
IAC037-043-065-067-231000-
/O.NEW.KARX.FF.W.0059.160923T0500Z-160923T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
1200 AM CDT FRI SEP 23 2016
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CLAYTON COUNTY IN NORTHEASTERN IOWA...
FAYETTE COUNTY IN NORTHEASTERN IOWA...
SOUTHERN CHICKASAW COUNTY IN NORTHEASTERN IOWA...
SOUTHERN FLOYD COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 500 AM CDT
* AT 1158 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHARLES CITY...OELWEIN...NEW HAMPTON...GUTTENBERG...ELKADER...
NASHUA...STRAWBERRY POINT...FREDERICKSBURG...ROCKFORD...
GARNAVILLO...ELGIN...CLERMONT...MAYNARD...HAWKEYE...ARLINGTON...
MARBLE ROCK...IONIA AND VOLGA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4305 9302 4305 9183 4286 9110 4274 9105
4265 9090 4265 9208 4291 9208 4291 9302
$$
043 follow-up statements
871
WGUS73 KARX 230633
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
133 AM CDT FRI SEP 23 2016
IAC037-043-065-067-231000-
/O.CON.KARX.FF.W.0059.000000T0000Z-160923T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-FAYETTE IA-CHICKASAW IA-FLOYD IA-
133 AM CDT FRI SEP 23 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR
CLAYTON...FAYETTE...SOUTHERN CHICKASAW AND SOUTHERN FLOYD COUNTIES...
AT 131 AM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING IN
OELWEIN. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH
FLOODING IS ALREADY OCCURRING.
A ROAD WASHOUT OCCURRED NEAR OUTER ROAD AND 6TH STREET NE. STREET
FLOODING WAS ALSO OCCURRING IN OELWEIN ALONG WITH FLOODING IN THE
CITY PARKS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHARLES CITY...OELWEIN...NEW HAMPTON...WEST UNION...GUTTENBERG...
ELKADER...NASHUA...STRAWBERRY POINT...FREDERICKSBURG...ROCKFORD...
GARNAVILLO...ELGIN...CLERMONT...MAYNARD...HAWKEYE...ARLINGTON...
MARBLE ROCK...IONIA AND VOLGA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4305 9302 4305 9183 4286 9110 4274 9105
4265 9090 4265 9208 4291 9208 4291 9302
$$
04839
WGUS73 KARX 230815
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
315 AM CDT FRI SEP 23 2016
IAC037-043-065-067-231000-
/O.CON.KARX.FF.W.0059.000000T0000Z-160923T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-FAYETTE IA-CHICKASAW IA-FLOYD IA-
315 AM CDT FRI SEP 23 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR
CLAYTON...FAYETTE...SOUTHERN CHICKASAW AND SOUTHERN FLOYD COUNTIES...
AT 308 AM CDT...RADAR ESTIMATED RAINFALL OF 1 TO LOCALLY 3 INCHES OF
RAIN HAS FALLEN ACROSS THE AREA. LOCAL LAW ENFORCEMENT REPORTED THAT
SOME CREEKS WERE OUT OF THEIR BANKS ALONG WITH SOME FLOODED
BASEMENTS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHARLES CITY...OELWEIN...NEW HAMPTON...WEST UNION...GUTTENBERG...
ELKADER...NASHUA...FAYETTE...STRAWBERRY POINT...FREDERICKSBURG...
ROCKFORD...GARNAVILLO...ELGIN...CLERMONT...MAYNARD...HAWKEYE...
ARLINGTON...MARBLE ROCK...IONIA AND VOLGA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
NEVER TRY TO DRIVE THROUGH FLOODED ROADWAYS. TURN AROUND...DON'T
DROWN!
&&
LAT...LON 4305 9302 4305 9183 4286 9110 4274 9105
4265 9090 4265 9208 4291 9208 4291 9302
$$
DAS391
WGUS73 KARX 230952
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
452 AM CDT FRI SEP 23 2016
IAC037-043-065-067-231001-
/O.EXP.KARX.FF.W.0059.000000T0000Z-160923T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLAYTON IA-FAYETTE IA-CHICKASAW IA-FLOYD IA-
452 AM CDT FRI SEP 23 2016
...THE FLASH FLOOD WARNING FOR CLAYTON...FAYETTE...SOUTHERN CHICKASAW
AND SOUTHERN FLOYD COUNTIES WILL EXPIRE AT 500 AM CDT...
THE HEAVY RAIN HAS PUSHED OUT OF THE AREA AND IS NO LONGER EXPECTED
TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES.
LAT...LON 4305 9302 4305 9183 4286 9110 4274 9105
4265 9090 4265 9208 4291 9208 4291 9302
$$
DASThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 10:01 AM CDT | Areal Flood Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 12 hr |
Nearby
Flash Flood Warnings in Iowa, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.