Alert archive / Iowa / Tornado Warnings in 1994
Tornado Warning 14, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jul 5, 1994, 10:16 PM CDT for Woodbury County, Iowa. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1994, 10:16 PM CDT (03:16 UTC)
- Expired
- Jul 5, 1994, 10:45 PM CDT
- In force
- 29 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, 3.3 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
- 3368 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1281 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 8.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSUX 060316 TORSUX IAC193-060345- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX CITY IA 1016 PM CDT TUE JUL 5 1994 THE NATIONAL WEATHER SERVICE IN SIOUX CITY HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 1045 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN WEST CENTRAL IOWA ...SOUTHWESTERN WOODBURY COUNTY AT 1014 PM CDT A FUNNEL CLOUD WAS REPORTED 2 MILES NORTH OF HORNICK. LITTLE MOVEMENT WAS INDICATED WITH THIS FUNNEL CLOUD. THIS STORM WILL CONTINUE TO AFFECT THE TOWNS OF LUTON...SALIX...SLOAN AND HORNICK. THIS IS A DANGEROUS STORM!! TAKE COVER IMMEDIATELY. IF YOU ARE IN A STRONG BUILDING GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR DEPRESSION...COVER YOUR HEAD WITH YOUR HANDS. HUMPHREY &
What forecasters said that day
The local office's own words before this tornado 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 5, 10:06 PM CDT, 10 minutes before
SDZ068>070-060405- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1004 PM CDT TUE JUL 5 1994 ...A SEVERE THUNDERSTORM WATCH CONTINUED IN EFFECT UNTIL 2 AM CDT FOR THE EXTREME SOUTHEAST SOUTH DAKOTA COUNTIES ALONG THE MISSOURI RIVER... THUNDERSTORMS WERE MOVING NORTHEAST ACROSS UNION COUNTY SOUTH DAKOTA WITH THE POTENTIAL FOR SEVERE WEATHER. NO THUNDERSTORMS WERE OCCURRING FROM TYNDALL IN BON HOMME COUNTY ACROSS YANKTON COUNTY TO VERMILLION IN CLAY COUNTY. THE MOVEMENT OF THE STORMS MAKES IT APPEAR PROBABLE THAT THUNDERSTORMS WILL PASS THEM BY...BUT THE SEVERE THUNDERSTORM WATCH CONTINUES FOR NOW. UMLAND
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 7:59 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 46 min |
| Jul 5, 8:37 PM CDT | Tornado Warning | FSD | Woodbury | 38 min |
| Jul 5, 8:42 PM CDT | Tornado Warning | FSD | Woodbury | 33 min |
| Jul 5, 9:18 PM CDT | Tornado Warning | FSD | Woodbury | 27 min |
| Jul 5, 9:41 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 64 min |
| Jul 5, 9:47 PM CDT | Tornado Warning | FSD | Woodbury | 28 min |
| Jul 5, 10:43 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 47 min |
| Jul 5, 11:21 PM CDT | Severe Thunderstorm Warning | FSD | Monona, Woodbury | 54 min |
| Jul 6, 12:14 AM CDT | Severe Thunderstorm Warning | FSD | Monona | 46 min |
Nearby
Tornado Warnings in Iowa, 1994Every tornado warning in 1994Tornadoes in 1994
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.