Alert archive / South Dakota / Tornado Warnings in 1993

Tornado Warning 22, NWS Aberdeen, SD

July 22, 1993Buffalo County, Lyman County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 22, 1993, 6:33 PM CDT for Buffalo County, Lyman County, South Dakota. It was in force for 27 min.

The area

The counties it named.

The facts

Issued: Jul 22, 1993, 6:33 PM CDT (23:33 UTC)
Expired: Jul 22, 1993, 7:00 PM CDT
In force: 27 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Buffalo County, SD, Lyman County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 11.6 hours before the alert went out and 135 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 19 J/kg
Mixed-layer CIN: -234 J/kg
Mixed-layer LCL: 568 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KHON 222333
TORHON
SDC017-085-230000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE HURON SD 
633 PM CDT THU JUL 22 1993

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE CENTRAL PART OF SOUTH DAKOTA
      SOUTHWEST BUFFALO...EXTREME EASTERN LYMAN

THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER.

AT 625 PM CDT  RADAR INDICATED A POSSIBLE TORNADO JUST SOUTHWEST OF
FORT THOMPSON MOVING SOUTHEAST AT 35 MILES AN HOUR.

 ON ITS PROJECTED PATH...THE TORNADO IS EXPECTED TO CROSS THE
MISSOURI RIVER ABOUT 10 MILES SOUTH OF FORT THOMPSON.

IF YOU ARE IN THE PATH OF THIS TORNADO...YOU SHOULD GO TO A BASEMENT
SHELTER IF AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE
LOWEST FLOOR POSSIBLE. ABANDON CARS AND MOBILE HOMES IN FAVOR OF A
REINFORCED BUILDING.

 JS/DPM

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

Local storm report, Jul 22, 4:23 PM CDT, 2 hours 10 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
423 PM CDT THU JUL 22 1993

STORM DATA FOR JULY 22 1993

 TIME            COUNTY..LOCATION           CHARACTER OF STORM..DAMAGE
.......................................................................

 414 PM CDT     POTTER...7 MILES           FUNNEL CLOUD SPOTTED BY THE
                SW OF GETTYSBURG.          POTTER COUNTY SHERIFFS
                                           OFFICE.

GILLESPIE

Local storm report, Jul 22, 4:24 PM CDT, 2 hours 9 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
423 PM CDT THU JUL 22 1993

STORM DATA FOR JULY 22 1993

 TIME            COUNTY..LOCATION           CHARACTER OF STORM..DAMAGE
.......................................................................

 414 PM CDT     POTTER...7 MILES           FUNNEL CLOUD SPOTTED BY THE
                SW OF GETTYSBURG.          POTTER COUNTY SHERIFFS
                                           OFFICE.

GILLESPIRE

Special weather statement, Jul 22, 5:34 PM CDT, 59 minutes before

SDZ003-004-005-240100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
534 PM CDT THU JUL 22 1993

...TORNADO WATCH ISSUED FOR PARTS OF NORTHCENTRAL AND NORTHEAST SOUTH
    DAKOTA UNIL 9 PM CDT...

A TORNADO WATCH HAS BEEN ISSUED FOR NORTHCENTRAL SOUTH DAKOTA EAST OF
LAKE OAHE AND FOR BROWN AND SPINK COUNTIES OF NORTHEAST SOUTH DAKOTA
UNTIL 9 PM CDT. TORNADOES...LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING
THUNDERSTORMS WINDS ARE POSSILE IN THE WATCH AREA.

AT 530 PM CDT STRONG THUNDERSTORMS WITH HEAVY RAIN AND DEADLY LIGHTNING
WERE IN SOUTHEAST POTTER COUNTY 15 MILES EAST OF GETTYSBURG. THESE
THUNDERSTORMS WERE MOVING EAST AT 15 MILES AN HOUR AND SHOULD BE INTO
SOUTHWEST FAULK COUNTY BY 545 PM CDT. RESIDENTS IN SOUTHEAST POTTER AND
SOUTHWEST FAULK COUNTIES SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO SEEK SAFE SHELTER.
<
GILLESPIE

Special weather statement, Jul 22, 5:34 PM CDT, 59 minutes before

SDZ003-004-005-240100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
534 PM CDT THU JUL 22 1993

...TORNADO WATCH ISSUED FOR PARTS OF NORTHCENTRAL AND NORTHEAST SOUTH
    DAKOTA UNIL 9 PM CDT...

A TORNADO WATCH HAS BEEN ISSUED FOR NORTHCENTRAL SOUTH DAKOTA EAST OF
LAKE OAHE AND FOR BROWN AND SPINK COUNTIES OF NORTHEAST SOUTH DAKOTA
UNTIL 9 PM CDT. TORNADOES...LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING
THUNDERSTORMS WINDS ARE POSSILE IN THE WATCH AREA.

AT 530 PM CDT STRONG THUNDERSTORMS WITH HEAVY RAIN AND DEADLY LIGHTNING
WERE IN SOUTHEAST POTTER COUNTY 15 MILES EAST OF GETTYSBURG. THESE
THUNDERSTORMS WERE MOVING EAST AT 15 MILES AN HOUR AND SHOULD BE INTO
SOUTHWEST FAULK COUNTY BY 545 PM CDT. RESIDENTS IN SOUTHEAST POTTER AND
SOUTHWEST FAULK COUNTIES SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO SEEK SAFE SHELTER.
<
GILLESPIE

Local storm report, Jul 22, 5:50 PM CDT, 43 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
550 PM CDT THU JUL 22 1993

STORM DATA FOR JULY 22 1993

 TIME            COUNTY..LOCATION           CHARACTER OF STORM..DAMAGE
.......................................................................

 453 PM CDT     POTTER...4 MILES           60 MPH WINDS RPTD BY POTTER
                S OF GETTYSBURG.           COUNTY SHERIFFS OFFICE.

GILLESPIE

Local storm report, Jul 22, 5:50 PM CDT, 43 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
550 PM CDT THU JUL 22 1993

STORM DATA FOR JULY 22 1993

 TIME            COUNTY..LOCATION           CHARACTER OF STORM..DAMAGE
.......................................................................

 453 PM CDT     POTTER...4 MILES           60 MPH WINDS RPTD BY POTTER
                S OF GETTYSBURG.           COUNTY SHERIFFS OFFICE.

GILLESPIE

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 4:17 PM CDT	Tornado Warning	ABR	Potter	28 min
Jul 22, 4:47 PM CDT	Tornado Warning	ABR	Potter	28 min
Jul 22, 6:04 PM CDT	Tornado Warning	ABR	Buffalo, Lyman	26 min
Jul 22, 6:04 PM CDT	Tornado Warning	ABR	Hughes	26 min
Jul 22, 6:16 PM CDT	Tornado Warning	ABR	Campbell, Walworth	29 min

Nearby

Tornado Warnings in South Dakota, 1993 Every tornado warning in 1993 Tornadoes 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.