Alert archive / Iowa / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 111, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Aug 24, 1997, 11:47 PM CDT for Ringgold County, Iowa. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 24, 1997, 11:47 PM CDT (04:47 UTC)
- Expired
- Aug 25, 1997, 12:05 AM CDT
- In force
- 18 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Ringgold County, IA
The radar
The Des Moines radar (KDMX), 119 km from the middle of the area, began a volume at 04:50 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
Omaha, NE (KOAX), launched 00:00Z, 4.8 hours before the alert went out and 190 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.
- Mixed-layer CAPE
- 4736 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1163 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 250446 RRA
SVRDSM
IAC159-250505-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1147 PM CDT SUN AUG 24 1997
* SEVERE THUNDERSTORM WARNING FOR
SOUTHERN RINGGOLD COUNTY - SOUTH CENTRAL IOWA
* UNTIL 1205 AM CDT
* SOME AREAS AFFECTED
RURAL AREAS
MALOY
BENTON
DELPHOS
READING
* AT 1143 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST SOUTH OF MT
AYR OR 65 MILES SOUTHWEST OF DES MOINES MOVING SOUTH AT 20 MPH.
* THE STORM WILL BE OUT OF THE COUNTY BY MIDNIGHT.
THIS IS A DANGEROUS STORM. DO NOT GO OUTDOORS.
FORSTER/SMITHWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Aug 24, 11:15 PM CDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1115 PM CDT SUN AUG 24 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1033 PM 3 NW DECATUR CITY IA 60 MPH WINDS
08/24/97 DECATUR
1103 PM KELLERTON IA 65 MPH WINDS
08/24/97 RINGOLD WITH TREES DOWNED
SMITHLocal storm report, Aug 24, 11:15 PM CDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE DES MOINES IA
1115 PM CDT SUN AUG 24 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1033 PM 3 NW DECATUR CITY IA 60 MPH TSTM GUST
08/24/97 DECATUR
1103 PM KELLERTON IA 65 MPH TSTM GUST
08/24/97 RINGOLD WITH TREES DOWNED
SMITHLocal storm report, Aug 24, 11:18 PM CDT, 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1115 PM CDT SUN AUG 24 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1033 PM 3 NW DECATUR CITY IA 60 MPH WINDS
08/24/97 DECATUR
1103 PM KELLERTON IA 65 MPH WINDS
08/24/97 RINGOLD WITH TREES DOWNED
SMITHLocal storm report, Aug 24, 11:32 PM CDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1132 PM CDT SUN AUG 24 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1125 PM MOUNT AYR IA 60 MPH TSTM GUST WITH
08/24/97 RINGOLD POWER LINES DOWNED
SMITHLocal storm report, Aug 24, 11:33 PM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1132 PM CDT SUN AUG 24 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1125 PM MOUNT AYR IA 60 MPH TSTM GUST WITH
08/24/97 RINGOLD POWER LINES DOWNED
SMITHLocal storm report, Aug 24, 11:34 PM CDT, 13 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE DES MOINES IA
1115 PM CDT SUN AUG 24 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1033 PM 3 NW DECATUR CITY IA 60 MPH TSTM GUST
08/24/97 DECATUR
1103 PM KELLERTON IA 65 MPH TSTM GUST
08/24/97 RINGOLD WITH TREES DOWNED
SMITHThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 10:05 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 35 min |
| Aug 24, 10:38 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 32 min |
| Aug 24, 10:46 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 34 min |
| Aug 24, 11:22 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 18 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1997Every severe thunderstorm 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.