Alert archive / Iowa / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 129, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 16, 1996, 10:56 PM CDT for Woodbury County, Iowa. It was in force for 34 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
- Jul 16, 1996, 10:56 PM CDT (03:56 UTC)
- Expired
- Jul 16, 1996, 11:30 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Woodbury County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 3.9 hours before the alert went out and 122 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
- 1921 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 979 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 214 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 170357 SVRFSD IAC193-170430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1056 PM CDT TUE JUL 16 1996 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST IOWA ...WOODBURY COUNTY AT 1054 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY SIOUX FALLS DOPPLER RADAR 25 MILES SOUTHEAST OF SIOUX CITY OR 2 MILES SOUTHEAST OF CLIMBING HILL MOVING EAST AT 25 MPH. THIS STORM CAN BE EXPECTED IN THE VICINITY OF... OTO AROUND 1110 PM CDT SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... VDESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. &
What 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
Special weather statement, Jul 16, 10:42 PM CDT, 14 minutes before
TTAA00 KFSD DDHHMM IAZ031-032-170600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1040 PM CDT TUE JUL 17 1996 ...TORNADO WATCH 790 REPLACED BY SEVERE THUNDERSTORM WATCH 791... THE TORNADO WATCH THAT WAS IN IN EFFECT UNTIL 1 AM FOR WOODBURY AND IDA COUNTIES IN IOWA HAS BEEN REPLACED BY A SEVERE THUNDERSTORM WATCH WHICH IS VALID UNTIL 4 AM CDT FOR MUCH OF SOUTHEAST SOUTH DAKOTA... NORTHEAST NEBRASKA...AND NORTHWEST IOWA. CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:17 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 43 min |
| Jul 16, 8:02 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 48 min |
| Jul 16, 10:24 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 31 min |
| Jul 16, 10:48 PM CDT | Flash Flood Warning | FSD | Woodbury | 3 hr |
| Jul 16, 11:36 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 34 min |
| Jul 17, 1:28 AM CDT | Flash Flood Warning | FSD | Woodbury | 3 hr |
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.