Alert archive / Iowa / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 152, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 4, 1996, 10:49 PM CDT for Ida County, Iowa. It was in force for 16 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 4, 1996, 10:49 PM CDT (03:49 UTC)
- Expired
- Aug 4, 1996, 11:05 PM CDT
- In force
- 16 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Ida County, IA
The radar
The Omaha radar (KOAX), 138 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
Omaha, NE (KOAX), launched 00:00Z, 3.8 hours before the alert went out and 138 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
- 4142 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 3.8
- Supercell composite
- 16.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 050350 SVRFSD IAC093-050405- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1049 PM CDT SUN AUG 4 1996 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1105 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST IOWA ...SOUTHERN IDA COUNTY AT 1048 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY SIOUX FALLS DOPPLER RADAR 46 MILES EAST OF SIOUX CITY OR 5 MILES SOUTHWEST OF IDA GROVE MOVING NORTHEAST AT 25 MPH. THIS STORM CAN BE EXPECTED IN THE VICINITY OF... IDA GROVE AROUND 1055 PM CDT ARTHUR AROUND 1105 PM CDT DAMAGING WINDS WILL BE LIKELY WITH THESE STORMS. 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. CHAPMAN
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, Aug 4, 10:02 PM CDT, 47 minutes before
SDZ058-050335- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1001 PM CDT SUN AUG 4 1996 ...SMALL STREAM FLOOD ADVISORY FOR AROURA COUNTY EXPIRES... THE SMALL STREAM FLOOD ADVISORYx FOR AURORA COUNTY HAS EXPIRED. THE STORMS THAT CAUSED HEAVY RAIN OVER AURORA COUNTY HAD MOVED EAST AND WEAKENED. ADDITIONAL THUNDERSTORMS MAY MOVE INTO THE COUNTY BUT ARE NOT EXPECTED TO BE AS INTENSE. HOLMES
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 10:16 PM CDT | Flash Flood Warning | FSD | Ida | 119 min |
| Aug 4, 10:16 PM CDT | Flash Flood Warning | FSD | Ida | 104 min |
| Aug 5, 12:19 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 31 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.