Alert archive / Iowa / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 102, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 1, 1996, 5:42 PM CDT for Plymouth County, Iowa; Union County, South Dakota. It was in force for 43 min. 2 reports 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 1, 1996, 5:42 PM CDT (22:42 UTC)
- Expired
- Jul 1, 1996, 6:25 PM CDT
- In force
- 43 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Plymouth County, IA, Union County, SD
The radar
The Sioux Falls radar (KFSD), 92 km from the middle of the area, began a volume at 22:44 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 1, 6:07 PM CDT | Hail 1 | Spink, SD | |
| Jul 1, 6:21 PM CDT | Hail 1.75 | Jefferson, SD |
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 12:00Z, 10.7 hours before the alert went out and 163 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2113 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 012243 SVRFSD IAC149-SDC127-012325- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 542 PM CDT MON JUL 1 1996 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 625 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST SOUTH DAKOTA ...CENTRAL AND SOUTHERN UNION COUNTY IN NORTHWEST IOWA ...WESTERN PLYMOUTH COUNTY AT 537 PM CDT...SEVERE THUNDERSTORMS WERE INDICATED BY SIOUX FALLS DOPPLER RADAR 20 MILES NORTHWEST OF SIOUX CITY NEAR WESTFIELD AND 25 MILES NORTHWEST OF SIOUX CITY 5 MILES NORTHWEST OF ELK POINT MOVING EAST AT 15 MPH. THESE STORMS CAN BE EXPECTED IN THE VICINITY OF... ELK POINT AROUND 545 PM ADAVILLE AROUND 615 PM SEVERE THUNDERSTORMS CAN AND DO PRODUCE TORNADOES WITH LITTLE OR NO WARNING. 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. JCV
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 1, 5:15 PM CDT, 27 minutes before
SDZ056-061-062-065>070-020000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 515 PM CDT MON JUL 1 1996 ...TORNADO WATCH CANCELLED FOR MOST OF SOUTHEAST SOUTH DAKOTA EXCEPT UNION COUNTY... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE TORNADO WATCH FOR MOST OF SOUTHEAST SOUTH DAKOTA EXCEPT FOR UNION COUNTY IN THE EXTREME SOUTHEAST. THE COUNTIES NO LONGER AFFECTED BY THE TORNADO WATCH INCLUDE... MINNEHAHA...MOODY...BON HOMM E...CLAY...HUTCHINSON...LINCOLN...MCCOOK... TURNER...AND YANKTON. THE THREAT OF SEVERE WEATHER HAS MOVED TO THE SOUTHEAST OF THESE AREAS INTO MINNESOTA...IOWA...NEBRASKA...AND UNION COUNTY SOUTH DAKOTA. RYRHOLM
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:55 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 45 min |
| Jul 1, 4:07 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 33 min |
| Jul 1, 4:31 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 49 min |
| Jul 1, 5:09 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 31 min |
| Jul 1, 5:25 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 45 min |
| Jul 1, 6:16 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 44 min |
| Jul 1, 6:23 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 52 min |
| Jul 1, 3:49 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 31 min |
| Jul 1, 4:20 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 30 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1996Severe Thunderstorm Warnings in South Dakota, 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; radar from the NEXRAD Level II archive.