Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 2, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Jun 11, 2016, 1:14 AM CDT for Chickasaw County, Floyd County, Iowa. It was in force for 3 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
- Jun 11, 2016, 1:14 AM CDT (06:14 UTC)
- Expired
- Jun 11, 2016, 4:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chickasaw County, IA, Floyd County, IA
The radar
The La Crosse radar (KARX), 143 km from the middle of the area, began a volume at 06:16 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 |
|---|---|---|---|
| Jun 11, 2:00 AM CDT | FLOOD | Charles City, IA | STREET FLOODING REPORTED IN THE CITY. . |
| Jun 11, 3:00 AM CDT | FLASH FLOOD | 5 Ssw Floyd, IA | TIME ESTIMATED. WATER RUNNING OVER HIGHWAY 14. LAW ENFORCEMENT REPORTED THAT IT HAD RECEDED WITHIN THE HOUR. . |
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, 6.2 hours before the alert went out and 210 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
- 1514 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
226 WGUS53 KARX 110614 FFWARX IAC037-067-110915- /O.NEW.KARX.FF.W.0002.160611T0614Z-160611T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 114 AM CDT SAT JUN 11 2016 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * FLASH FLOOD WARNING FOR... WESTERN CHICKASAW COUNTY IN NORTHEASTERN IOWA... EASTERN FLOYD COUNTY IN NORTH CENTRAL IOWA... * UNTIL 415 AM CDT * AT 113 AM 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...NASHUA...FLOYD...IONIA...CHICKASAW...ALTA VISTA...NORTH WASHINGTON...COLWELL...BASSETT...IDLEWILDE STATE PARK AND HOWARDVILLE. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 1.5 INCHES ARE POSSIBLE IN THE WARNED AREA. 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. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING SPOTS. && LAT...LON 4321 9284 4321 9241 4291 9231 4291 9283 $$ 04
3 follow-up statements
094 WGUS73 KARX 110722 FFSARX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 222 AM CDT SAT JUN 11 2016 IAC037-067-110915- /O.CON.KARX.FF.W.0002.000000T0000Z-160611T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHICKASAW IA-FLOYD IA- 222 AM CDT SAT JUN 11 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR WESTERN CHICKASAW AND EASTERN FLOYD COUNTIES... AT 215 AM CDT...RADAR INDICATED THUNDERSTORMS CONTINUING OVER THE FLASH FLOOD WARNING AREA. THIS WILL BRING ANOTHER INCH OF RAIN BY 3 AM TO THE WARNING AREA...WHICH BRINGS THE TOTAL RAINFALL TO AT LEAST 3 INCHES IN SOME AREAS TONIGHT. RADAR ALSO INDICATED THAT NEW STORMS WERE NOT FORMING TO THE NORTHWEST OF THE WARNING AREA...AND THAT THE RAIN MAY END BY 3 AM. LOCAL LAW ENFORCEMENT REPORTED BASEMENT FLOODING AND SOME WATER OVER ROADS JUST AFTER MIDNIGHT. HOWEVER...ANOTHER 2 INCHES OF RAIN HAS FALLEN SINCE THAT TIME. OVERFLOWING CREEKS...WATER OVER ROADS...AND FLOODED BASEMENTS ARE JUST A FEW OF THE OUTCOMES EXPECTED FROM THE RAIN. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CHARLES CITY...NASHUA...FLOYD...IONIA...CHICKASAW...ALTA VISTA...NORTH WASHINGTON...COLWELL...BASSETT...IDLEWILDE STATE PARK...HOWARDVILLE... BUNNS WOODS COUNTY PARK...COUNTY ROADS B 33 AND T 76...CARRVILLE...FLOYD CROSSING...BRADFORD...REPUBLIC...HOWARDS WOOD RECREATIONAL AREA...TWIN PONDS PARK AND DEERFIELD. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOST FLOODING DEATHS OCCUR IN CARS WHEN PEOPLE DRIVE THROUGH FLOWING WATER AND ARE SWEPT AWAY. TURN AROUND AND FIND AN ALTERNATE ROUTE IF WATER IS OVER THE ROAD. && LAT...LON 4321 9284 4321 9241 4291 9231 4291 9283 $$ DAB
919 WGUS73 KARX 110813 FFSARX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 313 AM CDT SAT JUN 11 2016 IAC037-067-110915- /O.CON.KARX.FF.W.0002.000000T0000Z-160611T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHICKASAW IA-FLOYD IA- 313 AM CDT SAT JUN 11 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR WESTERN CHICKASAW AND EASTERN FLOYD COUNTIES... AT 305 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS WERE FINALLY EXITING FLOYD AND CHICKASAW COUNTIES. RADAR INDICATES ABOUT 3 TO 4 INCHES OF RAIN MAY HAVE FALLEN ACROSS THE WARNING AREA. SPOTTERS IN THE CHARLES CITY AREA REPORTED PONDING WATER ON ROADS. EARLIER REPORTS OF BASEMENT FLOODING WERE ALSO RECEIVED IN NASHUA. FLASH FLOODING IS STILL A THREAT ACROSS THE WARNING AREA. OVER THE NEXT HOURS...THE THREAT WILL SLOWLY DIMINISH AS HEAVY RAINS MOVE OUT. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CHARLES CITY...NASHUA...FLOYD...IONIA...CHICKASAW...ALTA VISTA...NORTH WASHINGTON...COLWELL...BASSETT...IDLEWILDE STATE PARK...HOWARDVILLE... BUNNS WOODS COUNTY PARK...COUNTY ROADS B 33 AND T 76...CARRVILLE...HOWARDS WOOD RECREATIONAL AREA...TWIN PONDS PARK AND DEERFIELD. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 4321 9284 4321 9241 4291 9231 4291 9283 $$ DAB
126 WGUS73 KARX 110918 FFSARX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 418 AM CDT SAT JUN 11 2016 IAC037-067-110927- /O.EXP.KARX.FF.W.0002.000000T0000Z-160611T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CHICKASAW IA-FLOYD IA- 418 AM CDT SAT JUN 11 2016 ...THE FLASH FLOOD WARNING FOR WESTERN CHICKASAW AND EASTERN FLOYD COUNTIES HAS EXPIRED... AT 415 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN HAD MOVED WELL SOUTH OF THE WARNING AREA. LAW ENFORCEMENT REPORTED SOME MINOR PROBLEMS FROM THE RAIN ACROSS THE COUNTIES AFFECTED. ANY WATER ISSUES SHOULD CONTINUE TO IMPROVE. THEREFORE THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE AT 415AM. USE CAUTION THIS MORNING WILL TRAVELING. CREEKS WILL BE RUNNING HIGHER OR RISING THROUGH THE MORNING AS WELL. LAT...LON 4321 9284 4321 9241 4291 9231 4291 9283 $$ DAB
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 7:35 PM CDT | Special Weather Statement | ARX | Allamakee, Clayton | 85 min |
| Jun 10, 7:53 PM CDT | Special Weather Statement | ARX | Allamakee, Clayton, Fayette | 82 min |
| Jun 10, 8:56 PM CDT | Special Weather Statement | ARX | Chickasaw, Floyd | 94 min |
| Jun 10, 10:40 PM CDT | Special Weather Statement | ARX | Chickasaw, Clayton, Fayette | 65 min |
| Jun 10, 11:47 PM CDT | Areal Flood Advisory | ARX | Chickasaw, Floyd, Mitchell | 118 min |
| Jun 11, 2:32 AM CDT | Special Weather Statement | ARX | Floyd | 28 min |
| Jun 11, 2:41 AM CDT | Severe Thunderstorm Warning | ARX | Floyd | 34 min |
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.