Alert archive / Iowa / Flash Flood Warnings in 1997

Flash Flood Warning 13, NWS Quad Cities, IA

June 15, 1997Jackson County, Jones County, Iowa

NWS Quad Cities, IA issued this flash flood warning at Jun 15, 1997, 10:46 PM CDT for Jackson County, Jones 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 15, 1997, 10:46 PM CDT (03:46 UTC)
Expired
Jun 16, 1997, 1:45 AM CDT
In force
3 hr
Issued by
NWS Quad Cities, IA
Area
Whole counties

Counties Jackson County, IA, Jones County, IA

The radar

The Quad Cities radar (KDVN), 64 km from the middle of the area, began a volume at 03:49 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, 3.8 hours before the alert went out and 65 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 1997-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 654 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 1997-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
654 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1426 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLI 160346
FFWMLI
IAC097-105-160645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1046 PM CDT SUN JUN 15 1997

* FLASH FLOOD WARNING FOR
  JACKSON COUNTY - EAST CENTRAL IOWA
  JONES COUNTY - EAST CENTRAL IOWA

* UNTIL 145 AM CDT
 
* SOME STREAMS AFFECTED
  BEAR CREEK
  FARMER/S CREEK
  NORTH FORK OF MAQUOKETA RIVER
  STREAMS FEEDING THE MAQUOKETA RIVER

* SINCE 1000 PM CDT...NWS DOPPLER RADAR ESIMATED 2 TO 3 INCHES OF
  RAIN FELL OVER NORTHERN JONES AND ALL OF JACKSON COUNTY.

* FORECAST CONDITIONS
    TORRENTIAL RAIN PRODUCING THUNDERSTORMS WILL CONTINUE THROUGH AT
    LEAST 1230 AM CDT. THIS WILL MAKE THE FLASH FLOOD DANGER
    INCREASE MORE T8HAN IT ALREADY IS.

LEAVE FLOOD PRONE OR LOW LYING AREAS IMMEDIATELY.

HELGESON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 7:33 PM CDTTornado WarningDVNBenton47 min
Jun 15, 7:58 PM CDTTornado WarningDVNLinn62 min
Jun 15, 9:03 PM CDTSevere Thunderstorm WarningDVNBuchanan, Delaware47 min
Jun 15, 9:24 PM CDTSevere Thunderstorm WarningDVNDelaware, Jones, Linn31 min
Jun 15, 9:31 PM CDTSevere Thunderstorm WarningDVNLinn49 min
Jun 15, 9:44 PM CDTSevere Thunderstorm WarningDVNDubuque, Jones46 min
Jun 15, 9:53 PM CDTSevere Thunderstorm WarningDVNDubuque, Jackson47 min
Jun 15, 10:29 PM CDTSevere Thunderstorm WarningDVNJones36 min
Jun 15, 10:34 PM CDTSevere Thunderstorm WarningDVNClinton61 min
Jun 15, 10:38 PM CDTSevere Thunderstorm WarningDVNJackson47 min
Jun 16, 12:35 AM CDTFlash Flood WarningDVNJackson, Jones3 hr
Jun 16, 12:35 AM CDTFlash Flood WarningDVNJackson5 hr
Jun 16, 12:35 AM CDTFlash Flood WarningDVNJones5 hr
Jun 16, 12:46 AM CDTFlash Flood WarningDVNDes Moines, Henry, Lee, Van Buren5 hr
Jun 16, 12:46 AM CDTFlash Flood WarningDVNJefferson5 hr

Nearby

Flash Flood Warnings in Iowa, 1997Every flash flood warning in 1997

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.