Alert archive / Iowa / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 28, NWS Sioux Falls, SD

June 15, 1992Lyon County, Osceola County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 15, 1992, 10:51 PM CDT for Lyon County, Osceola County, Iowa. It was in force for 54 min.

The area

The counties it named.

The facts

Issued: Jun 15, 1992, 10:51 PM CDT (03:51 UTC)
Expired: Jun 15, 1992, 11:45 PM CDT
In force: 54 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Lyon County, IA, Osceola County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.9 hours before the alert went out and 232 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3614 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 346 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 KFSD 160352
SVRFSD
IAC119-143-160445-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1051 PM CDT MON JUN 15 1992
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1145 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIESS...
 
IN NORTHWEST IOWA
 
   ...EASTERN LYON COUNTY...OSCEOLA COUNTY
 
CITIES THREATENED BY THIS SEVERE STORM INCLUDE GEORGE AND SIBLEY IOWA.
 
AT 1045 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM CENTERED 5 MILES
EAST OF GEORGE IOWA MOVING NORTH EAST AT 35 MPH.
 
 
THIS IS A DANGEROUS STORM.  IF YOR ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR WINDS IN EXCESS OF 55 MPH...DESTRUCTIVE| HAIL...AND
DEADLY LIGHTNING.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.
 
UMLAND

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

Local storm report, Jun 15, 9:56 PM CDT, 55 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX CITY IA
954 PM CDT MON JUN 16 1992

TIME            EVENT AND LOCATION

855 PM CDT     SEVERAL ONE FOOT DIAMETER TREE LIMBS DOWN. SEVERAL
          E     POWER LINES DOWN. ONE HALF TO 3/4 INCH OF RAIN IN
               A SHORT PERIOD. IN AND AROUND DIXON IN DIXON COUNTY
               NEBRASKA.

...TIME IS APPROXIMATE... CORRECTED FOR LOCATION...

J QUINN

Local storm report, Jun 15, 10:09 PM CDT, 42 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX CITY IA
1008 PM CDT MON JUN 16 1992

TIME            EVENT AND LOCATION

945 PM CDT     AN 8 INCH DIAMETER TREE WAS BLOWN DOWN. SOME TREE LIMBS
        [       DOWN. MARBLE SIZE HAIL. HEAVY WIND. HEAVY RAIN. IN
               BERESFORD IN UNION COUNTY SOUTH DAKOTA.

...TIME IS APPROXIMATE...

J QUINN

Special weather statement, Jun 15, 10:10 PM CDT, 41 minutes before

IAZ001-004-005-160400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
1009 PM CDT MON JUN 15 1992

...A TORNADO WATCH IS IN EFFECT FOR THE SIOUXLAND AREA UNTIL 1 AM CDT...

THE STRONGEST THUNDERSTORMS WERE LOCATED 30 MILES SOUTH OF SIOUX
CITY AT 1007 PM.  ELSEWHERE SCATTERED THUNDERSTORMS WERE LOCATED FROM
PENDER NEBRASKA TO 30 MILES NORTHEAST OF SIOUX CITY NEAR STRUBLE IOWA.
MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR.

STRONG STORMS WILL BE POSSIBLE ACROSS THE SIOUXLAND AREA THIS EVENING.
IF THREATENING APPROACHES...YOU SHOULD MOVE TO A SAFE PLACE QUICKLY.

HOPPES

Special weather statement, Jun 15, 10:12 PM CDT, 39 minutes before

SDZ018-020-IAZ01-MNZ17-160330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1012 PM CDT MON JUN 15 1992

...SEVERE THUNDERSTORMS CONTINUE...

A SEVERE THUNDERSTORM WARNING CONTINUED IN EFFECT UNTIL 1045 PM CDT
FOR SIOUX COUNTY IOWA.  THE SEVERE THUNDERSTORM WARNINGS PREVIOUSLY
IN EFFECT FOR EASTERN YANKTON AND CLAY COUNTIES OF SOUTH DAKOTA...
LYON COUNTY IOWA...AND NOBLES COUNTY MINNESOTA HAVE BEEN ALLOWED TO
EXPIRE.

THE WEATHER IS VERY UNSTABLE AND PEOPLE IN SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...AND NORTHWEST IOWA SHOULD BE EXTREMELY
CAUTIOUS THROUGH 1 AM CDT.  A TORNADO WATCH CONTINUED IN EFFECT UNTIL
1 AM CDT FOR EXTREME SOUTHEAST SOUTH DAKOTA AND ADJOINING COUNTIES
OF NORTHWEST IOWA AND NORTHEAST NEBRASKA.

UMLAND

Special weather statement, Jun 15, 10:39 PM CDT, 12 minutes before

SDZ011-012-160440-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE HURON SD
1040 PM CDT MON JUN 15 1992

...TORNADO WATCH FOR SOUTHEAST SOUTH DAKOTA UNTIL 100 AM CDT...

AT 1030 PM CDT...NUMEROUS SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY
RAIN...HAIL AND GUSTY WINDS CONTINUED OVER PARTS OF EASTERN SOUTH DAKOTA.
THE SHOWERS AND STORMS WERE MAINLY NORTH AND EAST OF A LINE FROM NEAR
ABERDEEN...TO DE SMET...TO YANKTON.

THE STRONGEST THUNDERSTORMS WERE FROM 20 MILES NORTH OF BROOKINGS TO
NEAR SIOUX FALLS.

MOVEMENT WAS NORTH AT 30 MILES AN HOUR.

FREDERICK

Special weather statement, Jun 15, 10:46 PM CDT, 5 minutes before

SDZ018-020-IAZ01-MNZ17-160330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1045 PM CDT MON JUN 15 1992

...SEVERE THUNDERSTORMS CONTINUE...

A SEVERE THUNDERSTORM WARNING CONTINUED IN EFFECT UNTIL 1115 PM CDT
FOR JACKSON COUNTY MINNESOTA.  RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM NEAR JACKSON MINNESOTA MOVING NORTH NORTHEAST AT 25 MPH.
WIND GUSTS TO 60 MPH...DANGEROUS LIGHTNING...AND VERY HEAVY RAIN WILL
BE ASSOCIATED WITH THIS SEVERE STORM.  WATCH FOR LOCAL FLOODING OF
ROADS AND STREETS.

A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 11 PM CDT FOR MINNEHAHA
COUNTY OF SOUTHEAST SOUTH DAKOTA INCLUDING SIOUX FALLS. WIND GUSTS AND
DANGEROUS LIGHTNING OCCURRED WxITH THE SEVERE STORM AS IT MOVED THROUGH
SIOUX FALLS.

THE SEVERE THUNDERSTORM WARNING WILL BE REISSUED FOR THE EAST PART OF
THAT COUNTY IN NORTHWEST IOWA AND OSCEOLA COUNTY WILL BE ADDED.

UMLAND

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 9:30 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	45 min
Jun 15, 9:55 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	50 min

Nearby

Severe Thunderstorm Warnings in Iowa, 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.