Alert archive / Iowa / Flash Flood Warnings in 2004

Flash Flood Warning 18, NWS Sioux Falls, SD

June 16, 2004Ida County, Iowa

NWS Sioux Falls, SD issued this flash flood warning at Jun 16, 2004, 12:58 PM CDT for Ida County, Iowa. It was in force for 92 min. 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 16, 2004, 12:58 PM CDT (17:58 UTC)
Expired
Jun 16, 2004, 2:30 PM CDT
In force
92 min
Issued by
NWS Sioux Falls, SD
Area
Counties, with a storm outline in the text

County Ida County, IA

The radar

The Omaha radar (KOAX), 140 km from the middle of the area, began a volume at 17:59 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 16, 1:57 PM CDTFLASH FLOODBattle Creek, IABATTLE CREEK OUT OF ITS BANKS IN A FEW PLACES. CREEK LEVEL IS JUST A FEW INCHES BELOW SOME OF THE BRIDGES...DEBRIS BUMPS THE UNDERSIDE OF BRIDGES WHEN PASSING UNDER. STREETS STILL FLOODED. SEVERAL COUNTY ROADS ARE UNDER WATER.
Jun 16, 1:57 PM CDTFLASH FLOODBattle Creek, IABATTLE CREEK OUT OF ITS BANKS IN A FEW PLACES. CREEK LEVEL IS JUST A FEW INCHES BELOW SOME OF THE BRIDGES...DEBRIS BUMPS THE UNDERSIDE OF BRIDGES WHEN PASSING UNDER. STREETS STILL FLOODED. SEVERAL COUNTY ROADS ARE UNDER WATER.

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, 6.0 hours before the alert went out and 140 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 2004-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 338 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2004-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 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
338 J/kg
Mixed-layer CIN
-410 J/kg
Mixed-layer LCL
1794 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KFSD 161802
FFWFSD
IAC093-161930-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1258 PM CDT WED JUN 16 2004

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  IDA COUNTY IN NORTHWEST IOWA

* UNTIL 230 PM CDT

* AT 1255 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED VERY   
HEAVY RAIN FROM THUNDERSTORMS WERE CAUSING WIDE SPREAD STREET 
FLOODING IN IDA GROVE AND BATTLE CREEK. THE STORMS WERE MOVING 
NORTHEAST AT 20 MPH.

LEVELS ON BATTLE CREEK...ODEBOLT CREEK...THE MAPLE RIVER ARE LIKELY 
TO CONTINUE TO RISE AS RESULT OF THE EXCESSIVE RUNOFF. BETWEEN NOON 
AND NEAR 100 PM OVER 3 INCHES OF RAINFALL WAS MEASURED IN BATTLE 
CREEK.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CONTINUE TO CAUSE FLOODING 
OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND 
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS 
THROUGHOUT THE COUNTY UNTIL MID AFTERNOON.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 4254 9566 4223 9567 4223 9536 4256 9535

$$

DEMORIN/PS
2 follow-up statements
000 
WGUS73 KFSD 161856
FFSFSD
IAC093-161930-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
151 PM CDT WED JUN 16 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 230 PM CDT FOR IDA COUNTY...

AT 147 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED LEVELS 
RISING ON THE ODEBOLT CREEK AND BATTLE CREEK...AS WELL AS THE MAPLE 
RIVER IN IDA COUNTY. STREET FLOODING ALSO CONTINUES IN TOWNS AND 
CITIES...ESPECIALLY IDA GROVE AND BATTLE CREEK.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL CONTINUES TO CAUSE FLOODING OF 
SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 

ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE ALSO FLOODING. 
SEVERAL COUNTY ROADS ARE UNDER WATER.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 4254 9566 4223 9567 4223 9536 4256 9535

$$

DEMORIN/PS
000 
WGUS73 KFSD 161932
FFSFSD
IAC093-162000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
235 PM CDT WED JUN 16 2004

...THE FLASH FLOOD WARNING FOR IDA COUNTY HAS EXPIRED...

THE HEAVY RAIN HAS ENDED ACROSS IDA COUNTY AND HEAVY RAIN IS NOT 
EXPECTED TO RESUME THE REMAINDER OF THE AFTERNOON.  THEREFORE...THE 
FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.  ALTHOUGH WATER HAS 
RECEDED IN MOST LOCATIONS...SOME LOW-LYING ROADWAY...ROAD SIDE 
DITCHES...AND SMALL STREAMS MAY STILL BE FULL OF RAPIDLY MOVING 
WATER.  DO NOT ATTEMPT TO WALK THROUGH WATER WHICH IS FLOWING 
RAPIDLY.

LAT...LON 4254 9566 4223 9567 4223 9536 4256 9535

$$

PS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 10:21 AM CDTSevere Thunderstorm WarningFSDIda24 min
Jun 16, 10:37 AM CDTFlash Flood WarningFSDWoodbury113 min
Jun 16, 10:41 AM CDTSevere Thunderstorm WarningFSDIda34 min
Jun 16, 11:00 AM CDTFlash Flood WarningFSDIda2 hr

Nearby

Flash Flood Warnings in Iowa, 2004Every flash flood warning in 2004

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.