Alert archive / Iowa / Flash Flood Warnings in 2004

Flash Flood Warning 9, NWS Quad Cities, IA

May 24, 2004Benton County, Buchanan County, Iowa

NWS Quad Cities, IA issued this flash flood warning at May 24, 2004, 8:28 PM CDT for Benton County, Buchanan County, Iowa. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 24, 2004, 8:28 PM CDT (01:28 UTC)
Expired
May 25, 2004, 5:00 AM CDT
In force
9 hr
Issued by
NWS Quad Cities, IA
Area
Counties, with a storm outline in the text

Counties Benton County, IA, Buchanan County, IA

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.5 hours before the alert went out and 318 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, Minneapolis, MN at 00:00Z on 2004-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 00:00Z on 2004-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1187 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
355 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 KDVN 250130
FFWDVN
IAC011-019-251000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
828 PM CDT MON MAY 24 2004

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BUCHANAN COUNTY IN NORTHEAST IOWA
  BENTON COUNTY IN EAST CENTRAL IOWA

* UNTIL 5 AM CDT

* AT 825 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN FROM THUNDERSTORMS MOVING NORTHEAST ACROSS BUCHANAN 
AND BENTON COUNTIES.  APPROXIMATELY 1 TO 1 1/2 INCHES OF RAIN HAS 
FALLEN IN THE PAST HOUR IN THE VICINITY OF THUNDERSTORMS.

* LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... 
VINTON...VAN HORNE...URBANA... STANLEY...SHELLSBURG... 
NORWAY...NEWHALL... LAMONT... INDEPENDENCE...HAZLETON... 
BRANDON...BLAIRSTOWN...BELLE PLAINE.

ADDITIONAL RAINFALL OF AROUND AN INCH IS EXPECTED OVERNIGHT...WITH
LOCALLY HIGHER AMOUNTS IN THUNDERSTORMS.  

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING...ESPECIALLY WHILE DRIVING.

LAT...LON 4188 9228 4188 9186 4231 9187 4230 9162
          4263 9163 4264 9205 4229 9205 4229 9229

$$

REA
2 follow-up statements
000 
WGUS73 KDVN 250608
FFSDVN
IAC011-019-251000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
108 AM CDT TUE MAY 25 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 500 AM CDT FOR BUCHANAN 
COUNTY IN NORTHEAST IOWA...BUT HAS BEEN CANCELLED FOR BENTON COUNTY 
IN EAST CENTRAL IOWA...

AT 1 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED RAIN 
HAS ENDED ACROSS AREA.  RAINFALL AMOUNTS IN BENTON COUNTY AVERAGED 
LESS THAN 1 INCH...SO THE THREAT OF FLOODING THERE IS MINIMAL.  

RAINFALL AMOUNTS REPORTED BY THE BUCHANAN COUNTY EMERGENCY MANAGER 
AVERAGED BETWEEN THREE-FOURTHS AND ONE AND ONE-QUARTER INCHES.  THUS 
THE FLASH FLOOD THREAT CONTINUES THERE.  THE WAPSIPINCON RIVER HAS 
ALREADY STARTED TO RISE IN RESPONSE TO THESE RAINS.

IF YOU ARE TRAVELING TONIGHT...BE ESPECIALLY CAUTIOUS BECAUSE IT IS 
HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. 

DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE WATER MAY
BE TOO DEEP TO CROSS SAFELY OR THE ROAD COULD BE WASHED OUT. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

$$

WOLF
000 
WGUS73 KDVN 250949
FFSDVN
IAC019-251045-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
447 AM CDT TUE MAY 25 2004

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT UNTIL 5 AM CDT 
FOR...BUCHANAN COUNTY IN NORTHEAST IOWA...WILL BE ALLOWED TO 
EXPIRE...

THE RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS HAVE 
RECEDED OR WERE BEGINNING TO RECEDE...ENDING ANY FLOOD THREAT. EVEN 
THOUGH STREAMS AND CREEKS WERE RECEDING...SOME ROADWAYS MAY STILL BE 
COVERED WITH WATER. MOTORISTS ARE ADVISED TO AVOID DRIVING THROUGH 
FLOODED ROADWAYS.

DLF

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 24, 8:28 PM CDTTornado WarningDVNLee62 min
May 24, 8:36 PM CDTSevere Thunderstorm WarningDVNKeokuk54 min

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; the sounding from the Mesonet's radiosonde archive.