Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 53, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Sep 22, 2016, 3:55 AM CDT for Chickasaw County, Floyd County, Iowa. It was in force for 4 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
- Sep 22, 2016, 3:55 AM CDT (08:55 UTC)
- Expired
- Sep 22, 2016, 8:15 AM CDT
- In force
- 4 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Flood severity
- None
Counties Chickasaw County, IA, Floyd County, IA
The radar
The La Crosse radar (KARX), 151 km from the middle of the area, began a volume at 08:54 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 22, 4:45 AM CDT | HEAVY RAIN 5.28 | 2 Sse Bassett, IA | CO-OP OBSERVER STATION IONIA 2W /IONI4/. THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS. |
| Sep 22, 4:45 AM CDT | HEAVY RAIN 5.28 | 2 Wsw Ionia, IA | CO-OP OBSERVER STATION IONIA 2W /IONI4/. THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS. |
| Sep 22, 4:56 AM CDT | FLASH FLOOD | Nashua, IA | FIRE DEPT PUMPING WATER OUT OF BASEMENTS IN NASHUA. . |
| Sep 22, 6:30 AM CDT | HEAVY RAIN 7.55 | 2 Wsw Nashua, IA | CO-OP OBSERVER STATION NASHUA 2SW /NHUI4/. |
| Sep 22, 6:55 AM CDT | HEAVY RAIN 4.79 | 3 E Charles City, IA | AWOS STATION CHARLES CITY AIRPORT /CCY/. |
| Sep 22, 7:00 AM CDT | HEAVY RAIN 6.35 | 1 Sse Charles City, IA | CO-OP OBSERVER STATION CHARLES CITY /CIYI4/. |
| Sep 22, 7:00 AM CDT | HEAVY RAIN 9.36 | 2 Sse Nora Springs, IA | COCORAHS STATION NORA SPRINGS 2.4 SSE /IA-FL-3/. |
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, 8.9 hours before the alert went out and 206 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
- 144 J/kg
- Mixed-layer CIN
- -361 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 428 m²/s²
- 0-3 km storm-relative helicity
- 596 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.6
The text
As transmitted.
396
WGUS53 KARX 220855
FFWARX
IAC037-067-221315-
/O.NEW.KARX.FF.W.0053.160922T0855Z-160922T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
355 AM CDT THU SEP 22 2016
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN CHICKASAW COUNTY IN NORTHEASTERN IOWA...
FLOYD COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 815 AM CDT
* THIS IS AN EXTENSION OF THE FLASH FLOOD WARNING THAT HAD BEEN IN
EFFECT FOR CHICKASAW. THIS ALSO REPLACES THE FLASH FLOOD EMERGENCY
FOR FLOYD COUNTY.
* AT 349 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT THE
FLOODING SITUATION HAD STABILIZED ACROSS THE COUNTY. WATER
CONTINUES TO RISE AND SANDBAGGING IS ACTIVE. MANY ROADS ARE CLOSED
AND HAVE WATER OVER THEM ACROSS CHICKASAW AND FLOYD COUNTIES.
* FROM 4 TO 9 INCHES OF RAIN FELL OVERNIGHT IN THIS LOCAL AREA.
* RIVERS...STREAMS...AND CREEKS WILL ALL BE RISING OR ARE OUT OF
THEIR BANKS THIS MORNING.
* USE EXTREME CAUTION IS DRIVING IN THE DARKNESS THIS MORNING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4321 9302 4321 9282 4310 9255 4291 9219
4291 9302
$$
DABThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:05 PM CDT | Flash Flood Warning | ARX | Chickasaw | 5 hr |
| Sep 21, 7:11 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 49 min |
| Sep 21, 7:34 PM CDT | Tornado Warning | ARX | Floyd | 41 min |
| Sep 21, 8:11 PM CDT | Flash Flood Warning | ARX | Floyd | 8 hr |
| Sep 21, 8:44 PM CDT | Special Weather Statement | ARX | Allamakee, Winneshiek | 46 min |
| Sep 21, 9:19 PM CDT | Special Weather Statement | ARX | Clayton, Fayette | 56 min |
| Sep 21, 10:13 PM CDT | Special Weather Statement | ARX | Clayton, Fayette | 62 min |
| Sep 22, 12:04 AM CDT | Flash Flood Warning | ARX | Chickasaw | 4 hr |
| Sep 22, 12:13 AM CDT | Special Weather Statement | ARX | Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek | 2 hr |
| Sep 22, 12:48 AM CDT | Flash Flood Warning | ARX | Allamakee | 6 hr |
| Sep 22, 1:00 AM CDT | Flash Flood Warning | ARX | Howard, Mitchell, Winneshiek | 6 hr |
| Sep 22, 2:20 AM CDT | Flash Flood Warning | ARX | Chickasaw, Fayette, Floyd | 6 hr |
| Sep 22, 4:09 AM CDT | Flash Flood Warning | ARX | Clayton | 6 hr |
| Sep 22, 4:53 AM CDT | River Flood Warning | ARX | Mitchell | 3 days |
| Sep 22, 4:53 AM CDT | River Flood Warning | ARX | Floyd | 4 days |
| Sep 22, 5:39 AM CDT | River Flood Warning | ARX | Allamakee | 70 hr |
| Sep 22, 6:51 AM CDT | Flash Flood Warning | ARX | Allamakee | 3 hr |
| Sep 22, 7:00 AM CDT | Areal Flood Warning | ARX | Howard, Mitchell, Winneshiek | 6 hr |
| Sep 22, 8:02 AM CDT | Flash Flood Warning | ARX | Chickasaw, Fayette, Floyd | 5 hr |
| Sep 22, 9:00 AM CDT | River Flood Warning | ARX | Clayton | 5 days |
| Sep 22, 9:00 AM CDT | River Flood Warning | ARX | Clayton | 4 days |
| Sep 22, 9:38 AM CDT | Flash Flood Warning | ARX | Allamakee | 3 hr |
| Sep 22, 10:19 AM CDT | Flash Flood Warning | ARX | Clayton | 3 hr |
| Sep 22, 11:20 AM CDT | River Flood Warning | ARX | Allamakee, Clayton | 10 days |
| Sep 22, 11:20 AM CDT | River Flood Warning | ARX | Clayton | 9 days |
| Sep 22, 12:58 PM CDT | Areal Flood Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 21 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.