Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 33, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Sep 9, 2016, 3:16 PM CDT for 5 counties in Iowa. 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
- Sep 9, 2016, 3:16 PM CDT (20:16 UTC)
- Expired
- Sep 9, 2016, 6:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chickasaw County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Winneshiek County, IA
The radar
The La Crosse radar (KARX), 119 km from the middle of the area, began a volume at 20:17 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 9, 4:18 PM CDT | HEAVY RAIN 3.85 | 1 Ne Floyd, IA | STORM TOTAL. REPORT RELAYED BY MEDIA. |
| Sep 9, 4:20 PM CDT | HEAVY RAIN 3.4 | 6 E Elma, IA | |
| Sep 9, 4:35 PM CDT | HEAVY RAIN 2.9 | 5 Nnw Decorah, IA | STORM TOTAL SO FAR. |
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 12:00Z, 8.3 hours before the alert went out and 215 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1205 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
810
WGUS53 KARX 092016
FFWARX
IAC037-065-067-089-191-092315-
/O.NEW.KARX.FF.W.0033.160909T2016Z-160909T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
316 PM CDT FRI SEP 9 2016
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWESTERN FAYETTE COUNTY IN NORTHEASTERN IOWA...
CHICKASAW COUNTY IN NORTHEASTERN IOWA...
SOUTHERN HOWARD COUNTY IN NORTHEASTERN IOWA...
WINNESHIEK COUNTY IN NORTHEASTERN IOWA...
FLOYD COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 615 PM CDT
* THIS IS A CONTINUATION OF THE FLASH FLOOD WARNING.
* AT 310 PM CDT...LAW ENFORCEMENT OFFICIALS CONTINUED TO REPORT
WATER WAS RISING ON CREEKS AND STREAMS...AND OVER ROADS. EXTREME
CAUTION SHOULD BE TAKEN IF TRAVELING THIS AFTERNOON IN NORTHEAST
IOWA.
* RIVER GAGES IN THE AREA ALSO CONFIRM MANY RIVERS OR CREEKS ARE
MODERATELY FLOODING AND STILL RISING.
* CREEKS AND STREAMS WILL CONTINUE TO RISE INTO THE EVENING. THOSE
TRAVELING SHOULD BE AWARE THAT ROADS MAY BE CLOSED.
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES OF THE:
TURKEY RIVER... CEDAR RIVER... LITTLE WAPSIPINICON RIVER...
AND WAPSIPINICON RIVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4321 9261 4321 9256 4324 9255 4346 9201
4339 9171 4306 9173 4288 9208 4291 9208
4291 9280 4307 9295
$$
BAUMGARDT1 follow-up statement
797
WGUS73 KARX 092312
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
612 PM CDT FRI SEP 9 2016
IAC037-065-067-089-191-092317-
/O.EXP.KARX.FF.W.0033.000000T0000Z-160909T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE IA-CHICKASAW IA-HOWARD IA-WINNESHIEK IA-FLOYD IA-
612 PM CDT FRI SEP 9 2016
...THE FLASH FLOOD WARNING FOR NORTHWESTERN FAYETTE...CHICKASAW...
SOUTHERN HOWARD...WINNESHIEK AND FLOYD COUNTIES WILL EXPIRE AT 615 PM
CDT...
THE HEAVY RAIN HAS ENDED, ALLOWING THE FLASH FLOOD WARNING TO EXPIRE
AT 615 PM. HOWEVER, WATER WILL CONTINUE TO MOVE INTO THE LOCAL RIVER
SYSTEM THIS EVENING AND OVERNIGHT, RESULTING IN ELEVATED WATER
LEVELS AND POSSIBLE ROAD CLOSURES. THE FLASH FLOOD WARNING WILL BE
REPLACED WITH AN AREAL FLOOD WARNING. REMAIN ALERT FOR HIGH CREEKS
AND STREAMS ACROSS THE AREA IF TRAVELING TONIGHT.
LAT...LON 4321 9261 4321 9256 4324 9255 4346 9201
4339 9171 4306 9173 4288 9208 4291 9208
4291 9280 4307 9295
$$
ROGERSThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 11:08 AM CDT | Areal Flood Advisory | ARX | Allamakee, Chickasaw, Fayette, Floyd, Howard, Mitchell and 1 more | 3 hr |
| Sep 9, 11:41 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 7 hr |
| Sep 9, 12:28 PM CDT | Flash Flood Warning | ARX | Chickasaw, Fayette, Floyd, Howard, Winneshiek | 3 hr |
| Sep 9, 1:02 PM CDT | Flash Flood Warning | ARX | Allamakee, Winneshiek | 3 hr |
| Sep 9, 2:35 PM CDT | River Flood Warning | ARX | Allamakee | 67 hr |
| Sep 9, 2:39 PM CDT | River Flood Warning | ARX | Clayton | 4 days |
| Sep 9, 2:39 PM CDT | River Flood Warning | ARX | Clayton | 64 hr |
| Sep 9, 6:17 PM CDT | Areal Flood Warning | ARX | Chickasaw, Fayette, Howard, Winneshiek | 50 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.