Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 17, NWS Sioux Falls, SD

April 16, 2002Lincoln County, Minnesota; Brookings County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 16, 2002, 6:41 PM CDT for Lincoln County, Minnesota; Brookings County, South Dakota. It was in force for 34 min. 1 report 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: Apr 16, 2002, 6:41 PM CDT (23:41 UTC)
Expired: Apr 16, 2002, 7:15 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, Brookings County, SD

The radar

The Sioux Falls radar (KFSD), 90 km from the middle of the area, began a volume at 23:42 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
Apr 16, 7:10 PM CDT	Hail 0.75	Ivanhoe, 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
Apr 16, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.7 hours before the alert went out and 166 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: 1618 J/kg
Mixed-layer CIN: -461 J/kg
Mixed-layer LCL: 817 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 440 m²/s²
0-3 km storm-relative helicity: 427 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 
WUUS53 KFSD 162341
SVRFSD
MNC081-SDC011-170015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
641 PM CDT TUE APR 16 2002

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA
  WESTERN LINCOLN COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 715 PM CDT

* AT 641 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF ELKTON...OR ABOUT 10 MILES
  NORTHEAST OF FLANDREAU...MOVING NORTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ELKTON AROUND 645 PM CDT
  HENDRICKS AROUND 700 PM CDT
  IVANHOE AROUND 705 PM CDT

THIS STORM WILL PRODUCE LARGE HAIL AND DAMAGING WIND. GO INSIDE A
STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4420 9663 4420 9637 4462 9614 4462 9642

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 6:58 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	32 min
Apr 16, 5:23 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Minnehaha, Moody, Turner	22 min
Apr 16, 5:45 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	45 min
Apr 16, 5:46 PM CDT	Severe Thunderstorm Warning	FSD	Turner	29 min
Apr 16, 5:52 PM CDT	Severe Thunderstorm Warning	FSD	Lake	23 min
Apr 16, 5:54 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	36 min
Apr 16, 5:56 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	34 min
Apr 16, 6:27 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	33 min
Apr 16, 6:28 PM CDT	Severe Thunderstorm Warning	FSD	Union	47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002 Severe Thunderstorm Warnings in South Dakota, 2002 Every severe thunderstorm warning 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.