Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 89, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Sep 14, 1992, 2:19 AM CDT for Lyon County, Iowa; Lincoln County, South Dakota. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Sep 14, 1992, 2:19 AM CDT (07:19 UTC)
- Expired
- Sep 14, 1992, 3:00 AM CDT
- In force
- 41 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
Counties Lyon County, IA, Lincoln County, SD
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 7.3 hours before the alert went out and 224 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
- 2491 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1434 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 6.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 140719 SVRFSD IAC119-SDC083-140800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 219 AM CDT MON SEP 14 1992 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES... IN NORTHWEST IOWA ...WESTERN LYON COUNTY IN SOUTHEAST SOUTH DAKOTA ...NORTHEASTERN LINCOLN COUNTY AT 219 AM CDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS WHICH EXTENDED FROM 20 MILES SOUTHEAST OF SIOUX FALLS...NEAR LESTER IOWA... TO 20 MILES SOUTH OF SIOUX FALLS IN LINCOLN COUNTY. STORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR. THE TOWNS OF CANTON IN SOUTH DAKOTA AND INWOOD IN IOWA ARE IN THE PATH OF THESE STORMS. IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGH6TNING...AND HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA. MENTZER
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, Sep 14, 12:23 AM CDT, 1 hour 56 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-131730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 1225 AM CDT MON SEP 14 1992 ...STRONG THUNDERSTORMS WERE DEVELOPING ACROSS THE SIOUXLAND AREA... AT 1218 AM CDT RADAR INDICATED A STRONG THUNDERSTORM OVER CHEROKEE IOWA...48 MILES EAST OF SIOUX CITY. THIS STORM WILL LIKELY PRODUCE HEAVY RAIN...SMALL HAIL AND DANGEROUS LIGHTNING AS IT MOVES NORTHEAST AT 30 MILES AN HOUR. THERE dWILL REMAIN A CHANCE OF MORE THUNDERSTORMS TO DEVELOP ACROSS THE SIOUXLAND AREA TONIGHT. TANNER
Special weather statement, Sep 14, 1:10 AM CDT, 1 hour 9 minutes before
SDZ017-019-020>-140730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 110 AM CDT MON SEP 14 1992 ...THUNDERSTORMS DEVELOP ACROSS SOUTHEAST SOUTH DAKOTA... AT 1 AM CDT WEATHER RADAR INDICATED STRONG THUNDERSTORMS ACROSS BON HOMME AND WESTERN YANKTON COUNTIES OF SOUTHEAST SOUTH DAKOTA. THE STRONGEST STORM WAS LOCATED NEAR LESTERVILLE...OR ABOUT 15 MILES NORTHWEST OF YANKTON. STORMS WERE MOVING TOWARD THE NORTHEAST AT 30 MILES AN HOUR. FREQUENT...AND DANGEROUS...LIGHTNING WILL ACCOMPANY THESE STORMS. SMALL HAIL...BRIEF HEAVY RAIN...AND GUSTY WINDS WILL ALSO OCCUR. IF A THUNDERSTORM MOVES NEAR YOUR AREA...SEEK SHELTER IMMEDIATELY. MENTZER
Special weather statement, Sep 14, 2:07 AM CDT, 12 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-131730- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 205 AM CDT MON SEP 14 1992 ...STRONG THUNDERSTORMS WERE MOVING TOWARD THE SIOUXLAND AREA... AT 2 AM CDT RADAR INDICATED A LINE OF STRONG THUNDERSTORMS FROM 15 MILES NORTH OF BERESFORD SOUTH DAKOTA...65 MILES NORTHWEST OF SIOUX CITY TO YANKTON SOUTH DAKOTA...60 MILES NORTHWEST OF SIOUX CITY. THIS LINE OF THUNDERSTORMS CONTAINS VERY HEAVY RAIN...GUSTY WINDS... DEADLY LIGHTNING AND POSSIBLY SOME SMALL HALL. THE THUNDERSTORMS ARE MOVING NORTHEAST AT 30 MILES AN HOUR AND WILL ENTER THE TOWNS OF BERESFORD AND VERMILLION SOUTH DAKOTA AROUND 3 AM CDT. IF A THUNDERSTORM MOVES $NEAR YOUR AREA...SEEK SHELTER IMMEDIATELY. DO NOT USE ELECTRICAL EQUIPMENT OR THE TELEPHONE DURGING A THUNDERSTORM. TANNER
Nearby
Severe Thunderstorm Warnings in Iowa, 1992Severe Thunderstorm Warnings in South Dakota, 1992Every 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.