Alert archive / Iowa / Flash Flood Warnings in 2016

Flash Flood Warning 10, NWS Sioux Falls, SD

June 14, 20168 counties in Iowa

NWS Sioux Falls, SD issued this flash flood warning at Jun 14, 2016, 2:42 PM CDT for 8 counties in Iowa. It was in force for 2 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
Jun 14, 2016, 2:42 PM CDT (19:42 UTC)
Expired
Jun 14, 2016, 4:45 PM CDT
In force
2 hr
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Flood severity
None

Counties Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, O'Brien County, IA, Osceola County, IA, Woodbury County, IA

The radar

The Sioux Falls radar (KFSD), 146 km from the middle of the area, began a volume at 19:43 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

TimeReportWhereRemark
Jun 14, 2:45 PM CDTHEAVY RAIN 1.633 Sw Spencer, IA30 MINUTE RAINFALL TOTAL.
Jun 14, 3:30 PM CDTHEAVY RAIN 1.77Linn Grove, IA1 HOUR RAINFALL TOTAL.
Jun 14, 3:50 PM CDTFLASH FLOODSpirit Lake, IASTREET FLOODING AROUND TOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 7.7 hours before the alert went out and 176 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2016-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 852 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2016-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
852 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1164 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

902 
WGUS53 KFSD 141942
FFWFSD
IAC021-035-041-059-093-141-143-193-142145-
/O.NEW.KFSD.FF.W.0010.160614T1942Z-160614T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
242 PM CDT TUE JUN 14 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN CHEROKEE COUNTY IN NORTHWESTERN IOWA...
  SOUTHEASTERN WOODBURY COUNTY IN WEST CENTRAL IOWA...
  IDA COUNTY IN WEST CENTRAL IOWA...
  EASTERN OSCEOLA COUNTY IN NORTHWESTERN IOWA...
  EASTERN O'BRIEN COUNTY IN NORTHWESTERN IOWA...
  BUENA VISTA COUNTY IN NORTHWESTERN IOWA...
  CLAY COUNTY IN NORTHWESTERN IOWA...
  DICKINSON COUNTY IN NORTHWESTERN IOWA...

* UNTIL 445 PM CDT

* AT 241 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

ADDITIONAL RAINFALL AMOUNTS OF 2 INCHES ARE POSSIBLE IN THE WARNED
AREA ALONG WITH RAINFALL RATES OF 1 INCH OR MORE IN 30 MINUTES OR
LESS.

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...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4350 9541 4350 9491 4256 9491 4256 9539
      4248 9539 4247 9532 4221 9533 4221 9583
      4222 9583

$$

GILLISPIE
2 follow-up statements
480 
WGUS73 KFSD 142032
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
332 PM CDT TUE JUN 14 2016

IAC021-035-041-059-093-141-143-193-142145-
/O.CON.KFSD.FF.W.0010.000000T0000Z-160614T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE IA-WOODBURY IA-IDA IA-OSCEOLA IA-O'BRIEN IA-BUENA VISTA IA-
CLAY IA-DICKINSON IA-
332 PM CDT TUE JUN 14 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
EASTERN CHEROKEE...SOUTHEASTERN WOODBURY...IDA...EASTERN OSCEOLA...
EASTERN O'BRIEN...BUENA VISTA...CLAY AND DICKINSON COUNTIES...

AT 330 PM CDT...DOPPLER RADAR INDICATED ADDITIONAL THUNDERSTORMS
PRODUCING HEAVY RAIN MOVING INTO THE WARNED AREA. TWO TO THREE
INCHES OF RAIN HAVE ALREADY FALLEN IN SOME AREAS. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 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.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4350 9541 4350 9491 4256 9491 4256 9539
      4248 9539 4247 9532 4221 9533 4221 9583
      4222 9583

$$

GILLISPIE
604 
WGUS73 KFSD 142136
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
436 PM CDT TUE JUN 14 2016

IAC021-035-041-059-093-141-143-193-142146-
/O.EXP.KFSD.FF.W.0010.000000T0000Z-160614T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE IA-WOODBURY IA-IDA IA-OSCEOLA IA-O'BRIEN IA-BUENA VISTA IA-
CLAY IA-DICKINSON IA-
436 PM CDT TUE JUN 14 2016

...THE FLASH FLOOD WARNING FOR EASTERN CHEROKEE...SOUTHEASTERN
WOODBURY...IDA...EASTERN OSCEOLA...EASTERN O'BRIEN...BUENA VISTA...
CLAY AND DICKINSON COUNTIES WILL EXPIRE AT 445 PM CDT...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4350 9541 4350 9491 4256 9491 4256 9539
      4248 9539 4247 9532 4221 9533 4221 9583
      4222 9583

$$

GILLISPIE

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 9:31 AM CDTRiver Flood WarningFSDClay13 days
Jun 14, 9:31 AM CDTRiver Flood WarningFSDBuena Vista, Clay12 days
Jun 14, 10:25 AM CDTFlash Flood WatchFSDClay, Dickinson, O'Brien, Osceola6 hr
Jun 14, 12:27 PM CDTFlash Flood WarningFSDPlymouth, Sioux, Woodbury3 hr
Jun 14, 1:48 PM CDTFlash Flood WarningFSDCherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux and 1 more3 hr
Jun 14, 1:56 PM CDTTornado WarningFSDOsceola34 min
Jun 14, 2:11 PM CDTFlash Flood WarningFSDBuena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 2 more34 min
Jun 14, 2:14 PM CDTTornado WarningFSDOsceola31 min
Jun 14, 2:23 PM CDTSevere Thunderstorm WarningFSDClay, Dickinson37 min
Jun 14, 2:30 PM CDTTornado WarningFSDDickinson30 min
Jun 14, 2:48 PM CDTSevere Thunderstorm WarningFSDClay, Dickinson27 min
Jun 14, 3:10 PM CDTRiver Flood WarningFSDClay4 days
Jun 14, 3:10 PM CDTRiver Flood WarningFSDClay, Dickinson4 days
Jun 14, 4:49 PM CDTRiver Flood WarningFSDClay, Dickinson43 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.