Alert archive / Iowa / Flash Flood Warnings in 2000

Flash Flood Warning 7, NWS Quad Cities, IA

June 13, 2000Iowa County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jun 13, 2000, 9:55 PM CDT for Iowa County, Iowa. It was in force for 4 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: Jun 13, 2000, 9:55 PM CDT (02:55 UTC)
Expired: Jun 14, 2000, 2:00 AM CDT
In force: 4 hr
Issued by: NWS Quad Cities, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Iowa County, IA

The radar

The Quad Cities radar (KDVN), 121 km from the middle of the area, began a volume at 02:55 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, 2.9 hours before the alert went out and 127 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: 306 J/kg
Mixed-layer CIN: -209 J/kg
Mixed-layer LCL: 1177 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDVN 140257
FFWDVN
IAC095-140700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
955 PM CDT TUE JUN 13 2000

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  IOWA COUNTY IN EAST CENTRAL IOWA

* UNTIL 200 AM CDT

* AT 955 PM CDT...LAW ENFORCEMENT REPORTED FLOODING IN IOWA
  COUNTY...ESPECIALLY IN SOUTHEAST IOWA COUNTY ALONG OLD MAN CREEK
  AND F52 TRAIL.

* THE GROUND HAS ALREADY BEEN SATURATED BY RECENT RAINFALL...
  ADDITIONAL HEAVY RAIN HAS RESULTED IN EXCESSIVE RUNOFF...LEADING
  THE LIKELIHOOD OF FLASH FLOODING IN THE WARNED AREA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 4184 9185 4152 9188 4152 9227 4185 9229

JAZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:03 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan	27 min
Jun 13, 8:30 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Linn	45 min
Jun 13, 8:30 PM CDT	Severe Thunderstorm Warning	DVN	Benton	45 min
Jun 13, 9:16 PM CDT	Severe Thunderstorm Warning	DVN	Keokuk, Washington	44 min
Jun 13, 10:01 PM CDT	Severe Thunderstorm Warning	DVN	Jones	29 min
Jun 13, 10:40 PM CDT	Flash Flood Warning	DVN	Johnson	4 hr
Jun 13, 10:44 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	31 min
Jun 13, 11:10 PM CDT	Flash Flood Warning	DVN	Cedar	4 hr
Jun 13, 11:24 PM CDT	Flash Flood Warning	DVN	Scott	4 hr

Nearby

Flash Flood Warnings in Iowa, 2000 Every flash flood warning in 2000

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.