Alert archive / Iowa / Flash Flood Warnings in 1990

Flash Flood Warning 7, NWS Des Moines, IA

June 16, 1990Marion County, Warren County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 16, 1990, 9:16 AM CDT for Marion County, Warren County, Iowa. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 16, 1990, 9:16 AM CDT (14:16 UTC)
Expired
Jun 16, 1990, 12:00 PM CDT
In force
3 hr
Issued by
NWS Des Moines, IA
Area
Whole counties

Counties Marion County, IA, Warren County, IA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 2.3 hours before the alert went out and 254 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 1990-06-16Temperature 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, Omaha, NE at 12:00Z on 1990-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 241 square meters per square second.19395878Sfc1 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
3656 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
241 m²/s²
0-3 km storm-relative helicity
237 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 
TTAA00 KDSM 161434
FFWDSM
IAC125-179-161700-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
916 AM CDT SAT JUN 16 1990
 
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1200 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL IOWA
          ...MARION...WARREN
 
BETWEEN 7 AND 9 AM...EXTREMELY HEAVY RAINS HAVE BEEN FALLING
THROUGHOUT WARREN AND MARION COUNTIES. THESE AREAS ARE SOME 10 TO 25
MILES SOUTH AND SOUTHEAST OF DES MOINES.
 
UP TO 9 AM..RAIN OF 2 TO 3.5 INCHES HAVE BEEN RECORDED THROUGHOUT MANY
LOCATIONS IN WARREN AND MARION COUNTIES.  IN WARREN COUNTY...SOME
FLOODING HAS BEEN REPORTED ON SMALL CREEKS.
 
IN ADDITION...RADAR INDICATES THAT THE RAINS HAVE BECOME STATIONARY
OVER SOUTHERN WARREN AND MARION COUNTIES...AND THESE ADDITIONAL RAINS
WILL ADD TO THE FLOOD THREAT.
 
THIS WARNING INCLUDES THE CITIES OF INDIANOLA...KNOXVILLE...AND
PLEASANTIVILLE.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING5 THREATENING RAINS.
 
TRUETT/WEINBRECHT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 6:13 AM CDTSevere Thunderstorm WarningDMXDallas, Polk62 min
Jun 16, 6:17 AM CDTTornado WarningDMXPolk43 min
Jun 16, 6:41 AM CDTFlash Flood WarningDMXPolk3 hr
Jun 16, 7:12 AM CDTTornado WarningDMXJasper33 min
Jun 16, 7:22 AM CDTFlash Flood WarningDMXDallas4 hr
Jun 16, 9:48 AM CDTFlash Flood WarningDMXJohnson3 hr
Jun 16, 1:36 PM CDTFlash Flood WarningDMXUnion114 min
Jun 16, 1:36 PM CDTTornado WarningDMXMahaska54 min
Jun 16, 1:36 PM CDTTornado WarningDMXKeokuk, Wapello44 min
Jun 16, 2:16 PM CDTSevere Thunderstorm WarningDMXDavis, Jefferson, Van Buren44 min
Jun 16, 4:51 PM CDTSevere Thunderstorm WarningDMXAdair39 min
Jun 16, 5:15 PM CDTSevere Thunderstorm WarningDMXMadison, Union30 min
Jun 16, 5:49 PM CDTSevere Thunderstorm WarningDMXWapello26 min
Jun 16, 5:49 PM CDTSevere Thunderstorm WarningDMXMadison26 min
Jun 16, 6:16 PM CDTSevere Thunderstorm WarningDMXClarke29 min

Nearby

Flash Flood Warnings in Iowa, 1990Every flash flood warning in 1990

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.