Alert archive / Iowa / Flash Flood Warnings in 1996

Flash Flood Warning 4, NWS Des Moines, IA

June 16, 1996Fayette County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 16, 1996, 11:13 PM CDT for Fayette 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 counties it named.

The facts

Issued
Jun 16, 1996, 11:13 PM CDT (04:13 UTC)
Expired
Jun 17, 1996, 2:15 AM CDT
In force
3 hr
Issued by
NWS Des Moines, IA
Area
Whole counties

County Fayette County, IA

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.2 hours before the alert went out and 177 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 1996-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 955 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, Davenport, at 00:00Z on 1996-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939Sfc1 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
955 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KALO 170409
FFWALO
IAC065-170715-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WATERLOO IA
1113 PM CDT SUN JUN 16 1996
 
THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  215 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST IOWA
 
   ...FAYETTE COUNTY
 
AT 1110 PM...LOCAL LAW ENFORCEMENT IN FAYETTE COUNTY REPORTED MANY
STREAMS AND CREEKS TO BE OVERFLOWING THEIR BANKS. IN ADDITION... MANY
SHOULDERS ALONG HIGHWAYS AND SECONDARY ROADS HAVE BEEN WASHED OUT OR
DAMAGED BY QUICKLY FLOWING WATER. HEAVY RAINFALL FROM EARLIER TODAY
ALONG WITH MORE THAN 2 INCHES OF RAIN IN THE PAST 2 HOURS HAVE PRODUCED
THE FLOODING CONDITIONS.
 
HEAVY RAINFALL IS EXPECTED TO CONTINUE OVER THE NEXT FEW HOURS WITH
ADDITIONAL HEAVY RAINS LIKELY.
 
DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  IT IS HARDER TO
RECOGNIZE6 THE DANGERS OF FLOODS AND FLASH FLOODS AT NIGHT.
 
COGIL

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 8:21 PM CDTFlash Flood WarningDMXBoone, Hamilton3 hr
Jun 16, 8:48 PM CDTFlash Flood WarningDMXStory3 hr
Jun 16, 9:47 PM CDTFlash Flood WarningDMXHardin2 hr
Jun 16, 11:14 PM CDTFlash Flood WarningDMXStory6 hr
Jun 16, 11:29 PM CDTFlash Flood WarningDMXHamilton, Hardin2 hr
Jun 16, 11:29 PM CDTFlash Flood WarningDMXBoone2 hr

Nearby

Flash Flood Warnings in Iowa, 1996Every flash flood warning in 1996

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.