Alert archive / Minnesota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 23, NWS Sioux Falls, SD

May 18, 1996Lyon County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 18, 1996, 11:57 PM CDT for Lyon County, Minnesota. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 18, 1996, 11:57 PM CDT (04:57 UTC)
Expired
May 19, 1996, 12:25 AM CDT
In force
28 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 116 km from the middle of the area, began a volume at 04:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.0 hours before the alert went out and 184 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1996-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1996-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
9 J/kg
Mixed-layer CIN
-231 J/kg
Mixed-layer LCL
2274 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
86 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 KFSD 190458
SVRFSD
IAC167-MNC083-SDC083-190525-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1157 PM CDT SAT MAY 18 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1225 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEAST SOUTH DAKOTA

   ...SOUTHERN LINCOLN COUNTY

IN SOUTHWEST MINNESOTA

   ...WESTERN LYON COUNTY

IN NORTHWEST IOWA

   ...WESTERN SIOUX COUNTY
 
AT 1155 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS DETECTED BY
SIOUX FALLS DOPPLER RADAR FROM 10 MILES EAST OF SIOUX FALLS TO 30
MILES SOUTH OF SIOUX FALLS...OR FROM NEAR ROWENA...TO WORTHING...TO
BERESFORD.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
CANTON                   AROUND 1200 AM CDT
FAIRVIEW                 AROUND 1205 AM CDT
HUDSON                   AROUND 1205 AM CDT
INWOOD                   AROUND 1210 AM CDT
LEBANON                  AROUND 1215 AM CDT

THE PRIMARY THREAT WILL BE DAMAGING THUNDERSTORM WINDS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

SEVERE THUNDERSTORMS CAN AND OFTEN DO PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING.  

CHAPMAN

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, May 18, 11:00 PM CDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1100 PM CDT SAT MAY 18 1996

TIME CDT     .....CITY LOCATION.....    STATE      ...EVENT/REMARKS...
             ....COUNTY LOCATION....

830 PM       CHAMBERLAIN                SD         1.75 INCH HAIL
5/18/96      BRULE                                 60 MPH WINDS

900 PM       CHAMBERLAIN                SD         1.00 INCH HAIL
5/18/96      BRULE

908 PM       KIMBALL                    SD         PEA/SIZE HAIL
5/18/96      BRULE

920 PM       WEST OF WHITE LAKE         SD         0.5 INCH HAIL
5/18/96      AURORA

930 PM       NORTHEAST OF HETLAND       SD         0.5 INCH HAIL
5/18/96      KINGSBURY

930 PM       3S HOWARD                  SD         TORNADO OVERTURNED
5/18/96      MINER                                 CARS...DOWNED LARGE
                                                   TREES...CAUSED FIRES

955 PM       1S HOWARD                  SD         55 MPH WINDS
5/18/96      MINER

1038 PM      4SE BROOKINGS              SD         TORNADO REPORTED
5/18/96                                            BY PUBLIC

RSR

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 9:31 PM CDTSevere Thunderstorm WarningFSDLincoln29 min
May 18, 11:16 PM CDTSevere Thunderstorm WarningFSDLyon, Murray, Pipestone29 min
May 18, 11:51 PM CDTSevere Thunderstorm WarningFSDNobles, Rock29 min
May 19, 12:40 AM CDTSevere Thunderstorm WarningFSDJackson30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.