Alert archive / Minnesota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 34, NWS Sioux Falls, SD

June 5, 1996Lyon County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 5, 1996, 5:48 PM CDT for Lyon County, Minnesota. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 5, 1996, 5:48 PM CDT (22:48 UTC)
Expired: Jun 5, 1996, 6:20 PM CDT
In force: 32 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 22:51 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.

What was reported inside it

Time	Report	Where	Remark
Jun 5, 6:30 PM CDT	Hail 1.75	Florence, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 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-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: 1263 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 191 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 052249
SVRFSD
MNC083-052320-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
548 PM CDT WED JUN 5 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 620 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWEST MINNESOTA

   ...NORTHEASTERN LYON COUNTY
 
AT 546 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY SIOUX FALLS
DOPPLER RADAR 9 MILES NORTH OF MARSHALL  OR 3 MILES NORTH OF GREEN
VALLEY MOVING EAST AT 35 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
GREEN VALLEY             AROUND 545 PM CDT
COTTONWOOD               AROUND 550 PM CDT
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG...REINFORCED BUILDING.  DO NOT STAND BY WINDOWS.  DO NOT USE
TELEPHONES UNLESS IT IS AN EMERGENCY OR ELECTRICAL APPLIANCES UNTIL
THE STORM HAS PASSED.  MOTORISTS SHOULD AVOID FLOODED ROADWAYS.

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

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, Jun 5, 11:50 AM CDT, 5 hours 58 minutes before

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-089-090-097-
098-NEZ013-014-SDZ040-055-056-059>062-065>071-052255-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1149 AM CDT WED JUN 5 1996

...SEVERE WEATHER OUTLOOK FOR PARTS OF EASTERN SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND EXTREME NORTHEAST
NEBRASKA...

WEATHER PARAMETERS APPEAR TO BE COMING TOGETHER FOR POSSIBLE SEVERE
WEATHER ACROSS THE AREA THIS AFTERNOON AND EVENING.

LOW PRESSURE AND A COLD FRONT WILL CONTINUE TO MOVE ACROSS THE
NORTHERN PLAINS THIS AFTERNOON AND TONIGHT. SUFFICIENT LOW LEVEL
MOISTURE...GOOD HEATING...AND A STRONG UPPER AIR DISTURBANCE WILL
ALL COME TOGETHER THIS AFTERNOON AND EVENING. SEVERE THUNDERSTORMS
WITH VERY LARGE HAIL...DAMAGING WINDS...AND A FEW TORNADOES ARE
POSSIBLE WITH THIS SYSTEM.

FOR ADDITIONAL INFORMATION KEEP TUNED TO NOAA WEATHER RADIO...YOUR
LOCAL RADIO AND TV AS THE AFTERNOON AND EVENING PROGRESSES FOR
POSSIBLE WATCHES AND WARNINGS.

BR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 5:31 PM CDT	Tornado Warning	FSD	Lincoln	49 min
Jun 5, 6:10 PM CDT	Severe Thunderstorm Warning	FSD	Murray	65 min
Jun 5, 6:34 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	31 min
Jun 5, 6:38 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Murray	47 min
Jun 5, 6:50 PM CDT	Tornado Warning	FSD	Pipestone	35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1996 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.