Alert archive / Iowa / Flash Flood Warnings in 2016

Flash Flood Warning 3, NWS La Crosse, WI

June 14, 2016Floyd County, Howard County, Mitchell County, Iowa

NWS La Crosse, WI issued this flash flood warning at Jun 14, 2016, 5:24 PM CDT for Floyd County, Howard County, Mitchell County, Iowa. It was in force for 3 hr. 10 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 14, 2016, 5:24 PM CDT (22:24 UTC)
Expired: Jun 14, 2016, 8:15 PM CDT
In force: 3 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: None

Counties Floyd County, IA, Howard County, IA, Mitchell County, IA

The radar

The La Crosse radar (KARX), 143 km from the middle of the area, began a volume at 22:23 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 14, 6:02 PM CDT	FLASH FLOOD	2 Ene Orchard, IA	WATER OVER HIGHWAY 218 AT 330TH.
Jun 14, 6:02 PM CDT	FLASH FLOOD	2 Nnw New Haven, IA	WATER OVER HIGHWAY 9 BETWEEN 370TH AND 380TH.
Jun 14, 6:02 PM CDT	FLASH FLOOD	2 N Riceville, IA	WATER OVER ROAD AT 8586 ADDISON AVENUE.
Jun 14, 6:15 PM CDT	FLOOD	2 Se Orchard, IA	SLOUGH CREEK FLOODING ACCORDING TO RIVER GAUGE
Jun 14, 6:15 PM CDT	FLOOD	2 Se Orchard, IA	SLOUGH CREEK FLOODING ACCORDING TO RIVER GAUGE.
Jun 14, 6:59 PM CDT	FLASH FLOOD	4 E Osage, IA	WATER OVER HIGHWAY 9 EAST OF INTERSECTION WITH 218.
Jun 14, 7:06 PM CDT	FLASH FLOOD	3 Nw Saratoga, IA	HIGH WATER REPORTED IN VARIOUS AREAS OF THE COUNTY.
Jun 14, 7:06 PM CDT	FLASH FLOOD	6 Ene Riceville, IA	HIGH WATER REPORTED IN VARIOUS AREAS OF THE COUNTY
Jun 14, 7:33 PM CDT	FLASH FLOOD	Rudd, IA	WASHED OUT ROADS AND WATER OVER ROADS IN SEVERAL LOCATIONS FROM MARBLE ROCK TO RUDD TO NORTH OF FLOYD.
Jun 14, 8:00 PM CDT	FLASH FLOOD	Orchard, IA	RAILROAD TRACKS UNDERCUT BY FLASH FLOOD NEAR ORCHARD. TIME ESTIMATED.

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, 10.4 hours before the alert went out and 194 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 7 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 566 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

107 
WGUS53 KARX 142224
FFWARX
IAC067-089-131-150115-
/O.NEW.KARX.FF.W.0003.160614T2224Z-160615T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
524 PM CDT TUE JUN 14 2016

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN HOWARD COUNTY IN NORTHEASTERN IOWA...
  SOUTHERN MITCHELL COUNTY IN NORTH CENTRAL IOWA...
  FLOYD COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 815 PM CDT

* AT 522 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. 1 TO 3 INCHES OF RAIN HAVE
  ALREADY FALLEN...HIGHEST FROM NORA SPRINGS TO NEW HAVEN AND
  RICEVILLE. AN ADDITIONAL 1 TO 2 INCHES IS POSSIBLE BY 7 PM. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  OSAGE...NORA SPRINGS...ROCKFORD...RICEVILLE...LIME SPRINGS...
  RUDD...FLOYD...MARBLE ROCK...MITCHELL...CHESTER...MCINTIRE...
  BROWNVILLE AND NEW HAVEN..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 4326 9302 4350 9245 4350 9223 4314 9267
      4291 9287 4291 9303

$$

AJ

2 follow-up statements

761 
WGUS73 KARX 142333
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
633 PM CDT TUE JUN 14 2016

IAC067-089-131-150115-
/O.CON.KARX.FF.W.0003.000000T0000Z-160615T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOWARD IA-MITCHELL IA-FLOYD IA-
633 PM CDT TUE JUN 14 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHWESTERN HOWARD...SOUTHERN MITCHELL AND FLOYD COUNTIES...

AT 629 PM CDT...SHOWERS AND THUNDERSTORMS CONTINUE TO IMPACT THE
WARNED AREA. DOPPLER RADAR ESTIMATES RAINFALL AMOUNTS OF 2 TO 4
INCHES ALREADY...WHICH HAS RESULTED IN STREET FLOODING IN CHARLES
CITY...AS WELL AS WATER OVER ROADS NEAR NEW HAVEN...ORCHARD AND
RICEVILLE. 

UP TO AN ADDITIONAL 1 INCH IS POSSIBLE BY 815 PM...RESULTING IN
ADDITIONAL FLASH FLOODING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OSAGE...NORA SPRINGS...ROCKFORD...RICEVILLE...LIME SPRINGS...RUDD...
FLOYD...MARBLE ROCK...MITCHELL...CHESTER...MCINTIRE...ORCHARD...
DOUGHERTY...BROWNVILLE...SARATOGA AND NEW HAVEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 4326 9302 4350 9245 4350 9223 4314 9267
      4291 9287 4291 9303

$$

AJ

799 
WGUS73 KARX 150029
FFSARX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
729 PM CDT TUE JUN 14 2016

IAC067-089-131-150115-
/O.CON.KARX.FF.W.0003.000000T0000Z-160615T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOWARD IA-MITCHELL IA-FLOYD IA-
729 PM CDT TUE JUN 14 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHWESTERN HOWARD...SOUTHERN MITCHELL AND FLOYD COUNTIES...

AT 724 PM CDT...NUMEROUS REPORTS HAVE BEEN RECEIVED OF WATER OVER
ROADS BETWEEN ORCHARD AND RICEVILLE...INCLUDING IMPACTING HIGHWAY 9
IN THE RICEVILLE AREA. RAIN HAS DIMINISHED IN INTENSITY...AND ONLY
UP TO AN ADDITIONAL HALF INCH IS POSSIBLE BY 815 PM. HOWEVER...WITH
RECENT RAINFALL OF 2 TO 4 INCHES AND SOME LOCATIONS NEARING 5 INCHES
PER RADAR ESTIMATES...EXPECT FLASH FLOODING TO CONTINUE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OSAGE...NORA SPRINGS...ROCKFORD...RICEVILLE...LIME SPRINGS...RUDD...
FLOYD...MARBLE ROCK...MITCHELL...CHESTER...MCINTIRE...ORCHARD...
DOUGHERTY...BROWNVILLE...SARATOGA AND NEW HAVEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 4326 9302 4350 9245 4350 9223 4314 9267
      4291 9287 4291 9303

$$

AJ

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 13, 7:32 PM CDT	Special Weather Statement	ARX	Clayton	58 min
Jun 14, 10:41 AM CDT	Flash Flood Watch	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	12 hr
Jun 14, 1:15 PM CDT	Special Weather Statement	ARX	Mitchell	30 min
Jun 14, 1:45 PM CDT	Special Weather Statement	ARX	Howard, Winneshiek	30 min
Jun 14, 1:55 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Howard, Mitchell	21 min
Jun 14, 2:38 PM CDT	Special Weather Statement	ARX	Floyd	22 min
Jun 14, 3:35 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton	25 min
Jun 14, 4:26 PM CDT	Special Weather Statement	ARX	Floyd, Mitchell	64 min
Jun 14, 4:30 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw	30 min
Jun 14, 4:45 PM CDT	Special Weather Statement	ARX	Howard	30 min
Jun 14, 5:13 PM CDT	Special Weather Statement	ARX	Floyd, Mitchell	47 min
Jun 14, 6:03 PM CDT	Special Weather Statement	ARX	Chickasaw, Floyd, Howard, Mitchell	42 min
Jun 14, 6:26 PM CDT	Flash Flood Warning	ARX	Allamakee, Clayton, Fayette	3 hr

Nearby

Flash Flood Warnings in Iowa, 2016 Every 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.