Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 72, NWS Sioux Falls, SD

July 8, 1992Union County, South Dakota; Dixon County, Nebraska

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 8, 1992, 12:06 AM CDT for Union County, South Dakota; Dixon County, Nebraska. It was in force for 54 min.

The area

The counties it named.

The facts

Issued: Jul 8, 1992, 12:06 AM CDT (05:06 UTC)
Expired: Jul 8, 1992, 1:00 AM CDT
In force: 54 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Dixon County, NE, Union County, SD

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 5.1 hours before the alert went out and 153 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: 2090 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1219 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSUX 080506
SVRSUX
NEC051-SDC127-080600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SIOUX CITY IA
1206 AM CDT WED JUL 8 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 100 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHEAST PART OF NEBRASKA
      NORTHERN DIXON...

   IN THE SOUTHEAST PART OF SOUTH DAKOTA
      SOUTHERN UNION...

AT 1205 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 40 MILES
NORTHWEST OF SIOUX CITY. THIS STORM HAS PRODUCED LARGE HAIL AT
YANKTON. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR.

THIS STORM WILL PASS THROUGH NEWCASTLE NEBRASKA ADN ELK POINT
SOUTH DAKOTA BY 1230 AM

REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN
QUICKLY FLOOD LOW LYING AREAS. IF YOU ARE IN THE PATH OF THIS STORM
TAKE SHELTER IN A REINFORCED BUILDING IMMEDIATELY.

ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR REPORTS
OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.

 OPTIONAL FREE FORMAT ACTION STATEMENT

DROZD

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 7, 8:22 PM CDT, 3 hours 44 minutes before

IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-080230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
822 PM CDT TUE JUL 7 1992

...THUNDERSTORMS WERE DEVELOPING OVER SOUTHEAST SOUTH DAKOTA...

AT 820 PM CDT A THUNDERSTORM WAS 45 MILES NORTHWEST OF SIOUX CITY
NEAR BERESFORD SOUTH DAKOTA. THIS WAS PART OF A LARGER AREA OF
THUNDERSTORMS WHICH EXTENDED FURTHER WEST. MOVEMENT WAS EAST AT
35 MILES AN HOUR.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING SMALL HAIL AND WIND
GUSTS UP TO 40 MILES AN HOUR. THEY WILL PASS THROUGH AKRON IOWA
AND ELK POINT SOUTH DAKOTA BY 9 PM.

DROZD

Special weather statement, Jul 7, 8:39 PM CDT, 3 hours 27 minutes before

SDZ016-018-020-080245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
836 PM CDT TUE JUL 7 1992

...THUNDERSTORMS RUMBLING ACROSS SOUTH CENTRAL AND SOUTHEAST SOUTH
DAKOTA...

AT 830 PM CDT...A THUNDERSTORM WITH VERY HEAVY RAIN AND SMALL HAIL WAS
MOVING THROUGH SOUTH CENTRAL SOUTH DAKOTA...20 MILES SOUTHWEST OF
CHAMBERLAIN. THIS STORM HAD PREVIOUSLY BEEN AT SEVERE LEVELS. THE STORM
WAS MOVING EAST AT 40 MPH AND WILL MOVE TO NEAR PLANKINTON AND STICKNEY
BY 930 PM.

IN FAR SOUTHEAST SOUTH DAKOTA...THUNDERSTORMS WITH VERY HEAVY
RAINS...SMALL HAIL...AND GUSTY WINDS WERE LOCATED TO THE SOUTH OF A
LINE FROM JUST WEST OF YANKTON TO NEAR LENNOX. THESE STORMS ARE ALSO
MOVING EAST AT 40 MPH AND WILL MOVE INTO WESTERN SIOUX COUNTY OF
NORTHWEST IOWA BY 915 PM.

NONE OF THESE THUNDERSTORMS ARE CURRENTLY SEVERE. HOWEVER...PERSONS IN
THEIR PATHS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SEEK
SAFE SHELTER IF NECQESSARY. LISTEN TO RADIO OR TV FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

GEELHART

Special weather statement, Jul 7, 9:02 PM CDT, 3 hours 4 minutes before

IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-080240-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
902 PM CDT TUE JUL 7 1992

...STRONG THUNDERSTORMS WERE OVER SOUTHEAST SOUTH DAKOTA...

AT 9 PM CDT THUNDERSTORMS WERE SOUTH OF A LINE FROM CHATASWORTH
IOWA... MILES NORTH OF SIOUX CITY TO JUNCTION CITY SOUTH DAKOTA.
MOVEMENT WAS EAST AT 40 MILES AN HOUR.

THESE THUNDERSTORMS WILL LIKELY PRODUCE SMALL HAIL...WIND GUSTS TO
40 MILE'S AN HOUR AND VERY HEAVY RAIN. THEY WILL AFFECT SPINK...NORA
AND BIG SPRINGS SOUTH DAKOTA THROUGH 930 PM.

DROZD

Special weather statement, Jul 7, 10:20 PM CDT, 1 hour 46 minutes before

SDZ017-019-020-080415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1020 PM CDT TUE JUL 7 1992

AT 1015 A THUNDERSTORM WITH VERY HEAVY RAIN...SMALL HAIL AND POSSIBLY
STRONG GUSTY WINDS LOCATED 50 MILES WEST NORTHWEST OF YANKTON OR JUST
NORTH OF ANDES WAS MOVING SOUTHEAST AT 35 MPH. THIS THUNDERSTORM
WILL CONTINUE TO AFFECT PEOPLE IN EASTERN CHARLES MIX COUNTY INCLUDING
THE CITIES OF WAGNER AND AVON THROUGH 1045 PM.

PERSONS IN THE PATH OF THIS STORM SHOULD SEEK SAFE SHELTER AS THIS
STORM APPROACHES.

BIER
NONE OF THESE THUNDERSTORMS ARE CURRENTLY SEVERE. HOWEVER...PERSONS IN
THEIR PATHS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND SEEK
SAFE SHELTER IF NECESSARY. LISTEN TO RADIO OR TV FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

GEELHART

Local storm report, Jul 7, 10:31 PM CDT, 1 hour 35 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX CITY IA
2232 PM CDT TUE JUL 7 1992

TIME            EVENT AND LOCATION
1015 PM CDT   PLYMOUTH COUNTY SHERIFF REPORTED 3/4 INCH HAIL AT AKRON
              IOWA. NUMEROUS 4 TO 6 INCH DIAMETER TREE LIMBS DOWN IN
              WESTFIELD IOWA.
J. QUINN

Special weather statement, Jul 7, 10:38 PM CDT, 1 hour 28 minutes before

SDZ017-019-020-080415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1035 PM CDT TUE JUL 7 1992

AT 1030 A THUNDERSTORM WITH VERY HEAVY RAIN...SMALL HAIL AND STRONG
GUSTY WINDS LOCATED 35 MILES WEST NORTHWEST OF YANKTON OR JUST SOUTH
OF DELMONT WAS MOVING EAST SOUTHEAST AT 35 MPH. THE STRONGEST PART
OF THIS THUNDERSTORM IS EXPECTED TO MOVE NORTH OF TYNDALL BY AROUND
1045 PM AND POSSIBLY REACH TABOR BY 11 PM CDT.

PERSONS IN THgE PATH OF THIS STORM SHOULD SEEK SAFE SHELTER AS THIS
STORM APPROACHES.

BIER
GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:09 PM CDT	Severe Thunderstorm Warning	FSD	Clay	51 min
Jul 7, 9:31 PM CDT	Severe Thunderstorm Warning	FSD	Union	44 min
Jul 7, 9:52 PM CDT	Tornado Warning	FSD	Clay	25 min
Jul 7, 10:02 PM CDT	Severe Thunderstorm Warning	FSD	Union	28 min
Jul 7, 10:41 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	49 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1992 Severe Thunderstorm Warnings in Nebraska, 1992 Every severe thunderstorm warning in 1992

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.