Alert archive / Minnesota / Tornado Warnings in 2002

Tornado Warning 14, NWS Sioux Falls, SD

July 28, 2002Lincoln County, Lyon County, Murray County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jul 28, 2002, 3:16 PM CDT for Lincoln County, Lyon County, Murray County, Minnesota. It was in force for 34 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 28, 2002, 3:16 PM CDT (20:16 UTC)
Expired: Jul 28, 2002, 3:50 PM CDT
In force: 34 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

Counties Lincoln County, MN, Lyon County, MN, Murray County, MN

The radar

The Sioux Falls radar (KFSD), 96 km from the middle of the area, began a volume at 20:17 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
Jul 28, 3:19 PM CDT	Hail 2.75	Florence, MN	Large hail caused damage to vehicles, windows, and crops, The amount of damage was not known.
Jul 28, 3:28 PM CDT	Hail 1.75	Balaton, MN
Jul 28, 3:45 PM CDT	Thunderstorm Wind 52 E	Currant Lake, MN
Jul 28, 3:45 PM CDT	Hail 0.75	Currant Lake, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 28, 1:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 200 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: 1056 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1511 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

245 
WFUS53 KFSD 282016
TORFSD
MNC081-083-101-282050-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
316 PM CDT SUN JUL 28 2002

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEAST LINCOLN COUNTY IN SOUTHWEST MINNESOTA
  SOUTHERN LYON COUNTY IN SOUTHWEST MINNESOTA
  NORTHERN MURRAY COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 350 PM CDT

* AT 316 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADIC THUNDERSTORM OVER TYLER...OR ABOUT 19 MILES NORTHEAST OF
  PIPESTONE...MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED...
  FLORENCE AROUND 325 PM CDT
  RUSSELL AROUND 330 PM CDT
  BALATON AROUND 340 PM CDT

THIS STORM HAS PRODUCED A TORNADO. IF YOU ARE IN THE PATH OF THIS
STORM...TAKE COVER IMMEDIATELY.

THIS THUNDERSTORM CAN PRODUCE A TORNADO AT ANY TIME. TAKE SHELTER
NOW.

LAT...LON 4436 9623 4421 9611 4411 9570 4428 9567

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 2:44 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	31 min
Jul 28, 2:52 PM CDT	Tornado Warning	FSD	Lincoln	23 min
Jul 28, 2:54 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	36 min
Jul 28, 3:14 PM CDT	Severe Thunderstorm Warning	FSD	Murray	46 min
Jul 28, 3:22 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	23 min
Jul 28, 3:45 PM CDT	Severe Thunderstorm Warning	FSD	Rock	45 min
Jul 28, 3:51 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Murray	39 min
Jul 28, 4:08 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood	52 min

Nearby

Tornado Warnings in Minnesota, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.