Alert archive / Iowa / Flash Flood Warnings in 2001

Flash Flood Warning 9, NWS Quad Cities, IA

August 3, 2001Van Buren County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Aug 3, 2001, 6:00 AM CDT for Van Buren County, Iowa. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Aug 3, 2001, 6:00 AM CDT (11:00 UTC)
Expired
Aug 3, 2001, 9:00 AM CDT
In force
3 hr
Issued by
NWS Quad Cities, IA
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Van Buren County, IA

The radar

The Quad Cities radar (KDVN), 147 km from the middle of the area, began a volume at 11:02 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.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 11.0 hours before the alert went out and 153 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, Davenport, at 00:00Z on 2001-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 718 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, Davenport, at 00:00Z on 2001-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
718 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
1033 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDVN 031101
FFWDVN
IAC177-031400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
600 AM CDT FRI AUG 3 2001

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN VAN BUREN COUNTY IN SOUTHEAST IOWA

* UNTIL 900 AM CDT

* AT 558 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THAT THE HEAVIEST RAIN HAS SHIFTED FURTHER WEST INTO EASTERN
  DAVIS COUNTY. HOWEVER...THUNDERSTORMS CONTAINING MODERATE TO HEAVY
  RAIN WERE CONTINUING OVER WESTERN VAN BUREN COUNTY. DOPPLER RADAR
  ESTIMATES THAT BETWEEN 3 AND 6 INCHES OF RAIN HAS FALLEN FROM
  BIRMINGHAM TO SOUTH OF LIBERTYVILLE...AND FROM MILTON TO 10 MILES
  NORTHWEST OF MILTON.

* THUNDERSTORMS WERE CONTINUOUSLY REDEVELOPING AND MOVING OVER
  PORTIONS OF THE WARNED AREA. THIS ADDITIONAL HEAVY RAINFALL WILL
  PRODUCE SIGNIFICANT RUNOFF IN SWOLLEN WATERWAYS. THIS WILL
  RESULT IN FLASH FLOODING FROM LEANDO TO MILTON...AFFECTING
  CHEQUEST CREEK...AND LICK CREEK. RAPID RISES WILL ALSO OCCUR ALONG
  THE FOX RIVER AND DES MOINES RIVER.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS WILL BE SUBJECT TO FLASH FLOODING.

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.

REPORT FLASH FLOODING TO YOUR NEAREST LOCAL LCAW ENFORCEMENT AGENCY...
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN THE QUAD CITIES.

LAT...LON 4088 9185 4063 9176 4061 9213 4088 9210

$$

MCCLURE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 1:00 AM CDTFlash Flood WarningDVNJefferson, Van Buren5 hr
Aug 3, 9:08 AM CDTFlash Flood WarningDVNVan Buren3 hr

Nearby

Flash Flood Warnings in Iowa, 2001Every flash flood warning in 2001

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; radar from the NEXRAD Level II archive.