Alert archive / Iowa / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 21, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 9, 1996, 5:55 AM CDT for Decatur County, Iowa. It was in force for 30 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
- May 9, 1996, 5:55 AM CDT (10:55 UTC)
- Expired
- May 9, 1996, 6:25 AM CDT
- In force
- 30 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Decatur County, IA
The radar
The Des Moines radar (KDMX), 111 km from the middle of the area, began a volume at 10:55 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
Omaha, NE (KOAX), launched 00:00Z, 10.9 hours before the alert went out and 226 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
- 1091 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 739 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 091056
SVRDSM
IAC053-091125-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
555 AM CDT THU MAY 9 1996
* SEVERE THUNDERSTORM WARNING FOR
NORTHERN DECATUR COUNTY - SOUTH CENTRAL IOWA
* UNTIL 625 AM CDT
* SOME LOCATIONS AFFECTED
OPEN FARMLAND
* AT 552 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES NORTH
OF LAMONI OR 55 MILES SOUTHWEST OF DES MOINES MOVING EAST AT 40 MPH.
* THE ~STORM WILL BE NEAR MILE MARKER 22 BY 615 AM.
IF YOU ARE NEAR THIS STORM...TAKE COVER...EXPECT HAIL UP TO ONE INCH
IN DIAMETER FROM THIS STORM.
MYERSThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 9:55 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 30 min |
| May 8, 10:19 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Union | 31 min |
| May 8, 10:49 PM CDT | Tornado Warning | DMX | Union | 31 min |
| May 8, 11:16 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 29 min |
| May 8, 11:40 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 35 min |
| May 9, 12:06 AM CDT | Severe Thunderstorm Warning | DMX | Davis | 34 min |
| May 9, 12:53 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 32 min |
| May 9, 6:17 AM CDT | Tornado Warning | DMX | Decatur | 33 min |
| May 9, 6:35 AM CDT | Tornado Warning | DMX | Wayne | 30 min |
| May 9, 10:08 AM CDT | Severe Thunderstorm Warning | DMX | Decatur | 32 min |
| May 9, 10:55 AM CDT | Severe Thunderstorm Warning | DMX | Wayne | 30 min |
| May 9, 11:21 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 34 min |
| May 9, 11:56 AM CDT | Severe Thunderstorm Warning | DMX | Davis | 34 min |
| May 9, 12:39 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 31 min |
| May 9, 1:25 PM CDT | Severe Thunderstorm Warning | DMX | Monroe | 30 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1996Every severe thunderstorm 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; radar from the NEXRAD Level II archive.