Alert archive / Iowa / Tornado Warnings in 1993
Tornado Warning 19, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jul 1, 1993, 6:45 PM CDT for Lyon County, Iowa. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 1, 1993, 6:45 PM CDT (23:45 UTC)
- Expired
- Jul 1, 1993, 7:15 PM CDT
- In force
- 30 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Lyon County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.8 hours before the alert went out and 230 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
- 124 J/kg
- Mixed-layer CIN
- -283 J/kg
- Mixed-layer LCL
- 582 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 012346 TORFSD IAC119-020015- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 645 PM CDT THU JUL 1 1993 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST IOWA ...SOUTHERN LYON COUNTY AT 645 PM CDT RADAR INDICATED A TORNADO ABOUT 5 MILES SOUTH OF GEORGE IOWA...OR ABOUT 30 MILES SOUTHWEST OF WORTHINGTON MINNESOTA. THE STORM WAS MOVING EAST AT 20 MILES AN HOUR. PEOPLE LIVING SOUTH OF GEORGE ARE IN THE PATH OF THIS STORM...AND SHOULD SEEK SHELTER IMMEDIATELY. DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT. MENTZER
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 1, 3:13 PM CDT, 3 hours 32 minutes before
SDZ016-017-019-012115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 310 PM CDT THU JUL 1 1993 AT 305 PM CDT A STRONG THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED OVER NORTH CENTRAL BRULE COUNTY OR 15 MILES NORTHEAST OF CHAMBERLAIN SOUTH DAKOTA. ALSO ANOTHER STRONG STORM WAS LOCATED OVER CHARLES MIX COUNTY OR ABOUT 3 MILES NORTH OF PICKSTOWN SOUTH DAKOTA. THE STORMS WERE MOVING EAST AT 30 MPH AND ARE EXPECTED TO EFFECT THE NORTHEAST PART OF BRULE COUNTY AND NORTHERN AURORA COUNTY AND THE STORM NEAR PICKSTOWN IS EXPECTED TO EFFECT THE SOUTH PART OF CHARLES MIX COUNTY AND WILL LIKELY EFFECT THE CITIES OF WAGNER AND LAKE ANDES BETWEEN 310 PM AND 410 PM CDT. THE STORMS WILL CAUSE LOCALLY HEAVY DOWNPOURS OF RAIN AND POSSIBLE SMALL HAIL. MARBLE SIZE HAIL WAS REPORTED AT LAKE ANDES AT 310 PM. KOSCIELSKI
Special weather statement, Jul 1, 5:49 PM CDT, 56 minutes before
SDZ015-016-017-019-012330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 547 PM CDT THU JUL 1 1993 ...TORNADO WATCH CANCELED FOR ALL OF SOUTH DAKOTA... TORNADO WATCH...561...HAS BEEN CANCELED FOR ALL OF SOUTH DAKOTA. THE WATCH COVERED PARTS OF SOUTH CENTRAL AND SOUTHEAST SOUTH DAKOTA. AT 545 PM STRONG THUNDERSTORMS CONTINUE SCATTERED OVER PARTS OF EASTERN SOUTH DAKOTA BUT THE THREAT OF TORNADOS HAS DECREASED. SOME OF THE THUNDERSTORMS MAY PRODUCE SMALL HAIL...HEAVY RAINS AND DEADLY LIGHTNING AS THEY MOVE FROM EASTERN SOUTH DAKOTA INTO WESTERN MINNESOTA AND NORTHWEST IOWA. DIRCKSEN
Special weather statement, Jul 1, 5:52 PM CDT, 53 minutes before
SDZ018-012350- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 548 PM CDT THU JUL 1 1993 AT 545 PM CDT A STRONG THUNDERSTORM WITH VERY HEAVY RAIN AND POSSIBLE SMALL HAIL WAS LOCATED OVER CENTRAL LAKE COUNTY 5 MILES EAST OF MADISON SOUTH DAKOTA. THE STORM WAS MOVING EAST AT 40 MPH AND WILL EFFECT THE NORTH PART OF MOODY COUNTY AND THE CITY OF FLANDREAU BETWEEN 550 PM AND 630 PM CDT. IF YOU RECEIVE HAIL UP TO 3/4 INCH OR LARGER AND WINDS OF 50 MPH OR NORE PLEASE CONTACT YOUR NEAREST LAW INFORCEMENT AGENCY. KOSCIELSKI
Local storm report, Jul 1, 6:05 PM CDT, 40 minutes before
STORM REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 610 PM CDT TUE JUL 1 1993 TIME COUNTY...LOCATION AND STATE CHARACTER OF STORM...DAMAGE ....................................................................... 318 PM CDT CHARLES MIX LAKE ANDES MARBLE HAIL 415 PM CDT HUTCHINSON OLIVET GOLF BALL HAIL 425 PM CDT HUTCHINSON MENNO TENNIS BALL HAIL 500 PM CDT TURNER 5 S PARKER B MARBLE HAIL 515 PM CDT BROOKINGS NEAR WHITE FUNNEL CLOUD KOSCIELSKI
Local storm report, Jul 1, 6:10 PM CDT, 35 minutes before
STORM REPORT NATIONAL WEATHER SERVICE SIOUX FALLS SD 610 PM CDT TUE JUL 1 1993 TIME COUNTY...LOCATION AND STATE CHARACTER OF STORM...DAMAGE ....................................................................... 318 PM CDT CHARLES MIX LAKE ANDES MARBLE HAIL 415 PM CDT HUTCHINSON OLIVET GOLF BALL HAIL 425 PM CDT HUTCHINSON MENNO TENNIS BALL HAIL 500 PM CDT TURNER 5 S PARKER MARBLE HAIL 515 PM CDT BROOKINGS NEAR WHITE FUNNEL CLOUD KOSCIELSKI
Special weather statement, Jul 1, 6:39 PM CDT, 6 minutes before
MNZ017-020000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 640 PM CDT THU JUL 1 1993 ...STRONG THUNDERSTORM MOVES ACROSS LYON COUNTY MINNESOTA... AT 635 PM CDT A STRONG THUNDERSTORM HAD MOVED ACROSS NORTHERN LYON COUNTY. THIS STORM HAS ALREADY PRODUCED HEAVY RAIN AND HAIL. THE STORM WAS LOCATED ABOUT 5 MILES WEST OF COTTONWOOD...OR ABOUT 10 MILES NORTH OF MARSHALL. PEOPLE IN LYON COUNTY SHOULD SEEK SHELTER INSIDE A REINFORCED BUILDING IF THIS THUNDERSTORM APPROACHES YOUR AREA. MENTZER
Nearby
Tornado Warnings in Iowa, 1993Every tornado warning in 1993Tornadoes in 1993
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.