Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 51, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Sep 22, 2016, 1:00 AM CDT for Howard County, Mitchell County, Winneshiek County, Iowa. It was in force for 6 hr. 18 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, 1:00 AM CDT (06:00 UTC)
- Expired
- Sep 22, 2016, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Howard County, IA, Mitchell County, IA, Winneshiek County, IA
The radar
The La Crosse radar (KARX), 110 km from the middle of the area, began a volume at 06:03 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, 1:32 AM CDT | HEAVY RAIN 2.16 | 4 Ne Riceville, IA | MESONET STATION 3 NE RICEVILLE /E4652/. |
| Sep 22, 1:47 AM CDT | HEAVY RAIN 2.42 | 4 Ne Riceville, IA | MESONET STATION 3 NE RICEVILLE /E4652/. |
| Sep 22, 1:47 AM CDT | HEAVY RAIN 2.42 | 4 Ne Riceville, IA | MESONET STATION 3 NE RICEVILLE /E4652/. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR. |
| Sep 22, 2:05 AM CDT | FLASH FLOOD | Decorah, IA | CITY STREETS FLOODED. |
| Sep 22, 2:07 AM CDT | FLASH FLOOD | Bluffton, IA | WATER OVER THE ROAD IN THE BLUFFTON AREA. |
| Sep 22, 4:39 AM CDT | FLASH FLOOD | Carpenter, IA | WATER OVER ROADS IN CARPENTER. |
| Sep 22, 6:30 AM CDT | HEAVY RAIN 3.64 | Saint Ansgar, IA | CO-OP OBSERVER STATION ST ANSGAR /SANI4/. |
| Sep 22, 6:34 AM CDT | FLOOD | 3 Wnw Vernon Springs, IA | A FEW LOCATIONS OUT OF TOWN WITH WATER OVER THEM STILL. |
| Sep 22, 6:34 AM CDT | FLOOD | 4 W Cresco, IA | A FEW LOCATIONS OUT OF TOWN WITH WATER OVER THEM STILL |
| Sep 22, 6:34 AM CDT | FLASH FLOOD | Carpenter, IA | WATER OVER ROADS NEAR TOWN. 3 OTHER SECONDARY ROADS NEARBY ALSO STILL UNDER WATER. |
| Sep 22, 6:34 AM CDT | FLASH FLOOD | Stacyville, IA | WATER OVER ROADS NEAR TOWN |
| Sep 22, 6:34 AM CDT | FLASH FLOOD | Stacyville, IA | WATER OVER ROADS NEAR TOWN. |
| Sep 22, 7:00 AM CDT | HEAVY RAIN 3.23 | Calmar, IA | CO-OP OBSERVER STATION CALMAR NE /CMRI4/. |
| Sep 22, 7:00 AM CDT | HEAVY RAIN 3.34 | Elma, IA | CO-OP OBSERVER STATION ELMA /ELMI4/. |
| Sep 22, 7:00 AM CDT | HEAVY RAIN 3.4 | Fort Atkinson, IA | COCORAHS STATION FORT ATKINSON /IA-WH-4/. |
| Sep 22, 7:00 AM CDT | HEAVY RAIN 3.44 | Osage, IA | CO-OP OBSERVER STATION OSAGE /OSAI4/. |
| Sep 22, 7:03 AM CDT | HEAVY RAIN 3.4 | Osage, IA | . |
| Sep 22, 7:04 AM CDT | HEAVY RAIN 3 | Saint Ansgar, IA | . |
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, 6.0 hours before the alert went out and 199 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.
563
WGUS53 KARX 220600
FFWARX
IAC089-131-191-221200-
/O.NEW.KARX.FF.W.0051.160922T0600Z-160922T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
100 AM CDT THU SEP 22 2016
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
HOWARD COUNTY IN NORTHEASTERN IOWA...
MITCHELL COUNTY IN NORTH CENTRAL IOWA...
WINNESHIEK COUNTY IN NORTHEASTERN IOWA...
* UNTIL 700 AM CDT THURSDAY
* AT 1256 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.
* THIS COULD TURN INTO A DANGEROUS SITUATION.
* THUNDERSTORMS NOW OVER NORTHEAST IOWA AND THE WARNED AREA PRODUCED
2 INCH PER HOUR RAINFALL RATES IN MINNESOTA. IF THIS LINE OF
STORMS SLOWS AT ALL...3-5 INCHES OF RAIN COULD FALL RAPIDLY.
* SOILS ARE EXTREMELY SATURATED AND WATER WILL RUNOFF INTO RIVERS
CREEKS AND STREAMS.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DECORAH...CRESCO...OSAGE...ST. ANSGAR...CALMAR...OSSIAN...
RICEVILLE...LYLE...ELMA...LIME SPRINGS...STACYVILLE...SPILLVILLE.
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 4350 9303 4350 9161 4308 9161 4308 9208
4321 9208 4321 9302
$$
DAB3 follow-up statements
847
WGUS73 KARX 220643
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
143 AM CDT THU SEP 22 2016
IAC089-131-191-221200-
/O.CON.KARX.FF.W.0051.000000T0000Z-160922T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOWARD IA-MITCHELL IA-WINNESHIEK IA-
143 AM CDT THU SEP 22 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT FOR
HOWARD...MITCHELL AND WINNESHIEK COUNTIES...
AT 138 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS HAD BECOME
STATIONARY OVER EXTREME NORTHERN IOWA ALONG A LINE FROM OSAGE TO
DECORAH. THESE STORMS ARE PRODUCING 2 INCHES OF RAIN PER HOUR. THIS
IS A DANGEROUS SITUATION FOR FLASH FLOODING.
* BECAUSE OF THE STALLED STORMS...FLASH FLOODING IS EXPECTED TO
RAPIDLY INCREASE THROUGH 3 AM.
* THIS IS A DANGEROUS SITUATION...TRAVEL IS NOT ADVISED TONIGHT.
* BASEMENTS WILL BE FLOODED AND ROADS WASHED OUT. MANY ROADS
WILL BE WATER COVERED WITHIN A FEW HOURS.
* CREEKS AND STREAMS WILL RISE RAPIDLY OUT OF THEIR BANKS...AND
POSSIBLY OVER ROADS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DECORAH...CRESCO...OSAGE...ST. ANSGAR...CALMAR...OSSIAN...
RICEVILLE...LYLE...ELMA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. DRIVE SLOW!
&&
LAT...LON 4350 9303 4350 9161 4308 9161 4308 9208
4321 9208 4321 9302
$$
BAUMGARDT076
WGUS73 KARX 220947
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
447 AM CDT THU SEP 22 2016
IAC089-131-191-221200-
/O.CON.KARX.FF.W.0051.000000T0000Z-160922T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOWARD IA-MITCHELL IA-WINNESHIEK IA-
447 AM CDT THU SEP 22 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT FOR
HOWARD...MITCHELL AND WINNESHIEK COUNTIES...
AT 440 AM CDT...DOPPLER RADAR INDICATED A LIGHTER RAIN CONTINUED
ACROSS FAR NORTHERN IOWA. 1 TO 4 INCHES OF RAIN HAS FALLEN
OVERNIGHT.
* SOME IMPROVEMENT HAS BEEN OCCURRING OVER THE PAST HOURS AND URBAN
WATER LEVELS ARE RECEDING.
* LAW ENFORCEMENT REPORTS SOME ROADS DO HAVE WATER OVER THEM.
* RIVERS CREEKS AND STREAMS ARE ALL RISING. SOME MAY BE FLOODING.
* THE CEDAR RIVER AT OSAGE IS EXPECTED TO REACH A RECORD CREST
LEVEL.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DECORAH...CRESCO...OSAGE...ST. ANSGAR...CALMAR...OSSIAN...
RICEVILLE...LYLE...ELMA...LIME SPRINGS...STACYVILLE...SPILLVILLE...
FORT ATKINSON...RIDGEWAY...PROTIVIN...CASTALIA...MITCHELL...
CHESTER...MCINTIRE AND CARPENTER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4350 9303 4350 9161 4308 9161 4308 9208
4321 9208 4321 9302
$$
DAB655
WGUS73 KARX 221140
FFSARX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
640 AM CDT THU SEP 22 2016
IAC089-131-191-221200-
/O.CON.KARX.FF.W.0051.000000T0000Z-160922T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOWARD IA-MITCHELL IA-WINNESHIEK IA-
640 AM CDT THU SEP 22 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT FOR
HOWARD...MITCHELL AND WINNESHIEK COUNTIES...
AT 630 AM...LOCAL LAW ENFORCEMENT REPORTED SEVERAL ROADS STILL
UNDERWATER NEAR SOME COMMUNITIES AND IN RURAL AREAS AROUND THE
COUNTIES.
IN MITCHELL COUNTY THE WORST WAS NEAR STACYVILLE AND CARPENTER...
WHILE HOWARD COUNTY STILL HAD A FEW LOCATIONS UNDER WATER.
AS THE HEAVIEST RAIN SHIFTS OUT OF THIS AREA...THE FLASH FLOOD
WARNING WILL BE CONVERTED TO AN AREAL FLOOD WARNING WHEN IT EXPIRES
AT THE TOP OF THE HOUR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST
FLOOD DEATHS OCCUR IN VEHICLES. EXPECT SOME ROAD CLOSURES AND IMPACT
TO YOUR MORNING DRIVE. USE EXTREME CAUTION.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4350 9303 4350 9161 4308 9161 4308 9208
4321 9208 4321 9302
$$
SHEAThe 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, 2:20 AM CDT | Flash Flood Warning | ARX | Chickasaw, Fayette, Floyd | 6 hr |
| Sep 22, 3:55 AM CDT | Flash Flood Warning | ARX | Chickasaw, Floyd | 4 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.