Alert archive / Iowa / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 121, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 16, 1996, 7:17 PM CDT for Woodbury County, Iowa. It was in force for 43 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 16, 1996, 7:17 PM CDT (00:17 UTC)
- Expired
- Jul 16, 1996, 8:00 PM CDT
- In force
- 43 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Woodbury County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 7:20 PM CDT | Thunderstorm Wind 70 | Salix, IA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.3 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 170018 SVRFSD IAC193-170100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 717 PM CDT TUE JUL 16 1996 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST IOWA ...WOODBURY COUNTY AT 712 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY SIOUX FALLS DOPPLER RADAR 13 MILES SOUTHWEST OF SIOUX CITY OR 8 MILES SOUTHWEST OF SERGEANT BLUFF MOVING EAST AT 30 MPH. 60 TO 70 MPH WINDS HAVE BEEN REPORTED AT HOMER NEBRASKA AT 711 PM. THIS STORM CAN BE EXPECTED IN THE VICINITY OF... SERGEANT BLUFF AROUND 725 PM CDT SALIX AROUND 725 PM CDT BRONSON AROUND 740 PM CDT HORNICK AROUND 750 PM CDT SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. BLOOM &
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 10:56 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 34 min |
| 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.