Alert archive / Minnesota / Tornado Warnings in 2011

Tornado Warning 37, NWS Sioux Falls, SD

July 1, 2011Lincoln County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jul 1, 2011, 3:53 PM CDT for Lincoln County, Minnesota. It was in force for 21 min. 3 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 1, 2011, 3:53 PM CDT (20:53 UTC)
Expired: Jul 1, 2011, 4:14 PM CDT
In force: 21 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon

County Lincoln County, MN

The radar

The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 20:53 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 1, 3:57 PM CDT	TORNADO	Tyler, MN
Jul 1, 3:59 PM CDT	HAIL 1.75	Tyler, MN
Jul 1, 4:00 PM CDT	TSTM WND GST 70	Tyler, MN	LOTS OF TREE DAMAGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 1, 2:08 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.9 hours before the alert went out and 188 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: 407 J/kg
Mixed-layer CIN: -374 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: -270 m²/s²
0-3 km storm-relative helicity: -229 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

833 
WFUS53 KFSD 012053
TORFSD
MNC081-012130-
/O.NEW.KFSD.TO.W.0037.110701T2053Z-110701T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
353 PM CDT FRI JUL 1 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN LINCOLN COUNTY IN SOUTHWEST MINNESOTA...

* UNTIL 430 PM CDT

* AT 354 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
  DANGEROUS STORM WAS LOCATED NEAR LAKE BENTON...OR 18 MILES NORTH OF
  PIPESTONE...AND MOVING EAST AT 60 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  LAKE BENTON AROUND 405 PM CDT...
  TYLER AROUND 400 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4427 9607 4425 9608 4421 9638 4432 9643
      4441 9609
TIME...MOT...LOC 2054Z 255DEG 50KT 4426 9625

$$

WEISSER

1 follow-up statement

283 
WWUS53 KFSD 012114
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
414 PM CDT FRI JUL 1 2011

MNC081-012124-
/O.CAN.KFSD.TO.W.0037.000000T0000Z-110701T2130Z/
LINCOLN MN-
414 PM CDT FRI JUL 1 2011

...THE TORNADO WARNING FOR SOUTHERN LINCOLN COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA...HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THIS THUNDERSTORM.

LAT...LON 4427 9607 4425 9608 4421 9638 4432 9643
      4441 9609
TIME...MOT...LOC 2114Z 239DEG 51KT 4439 9590

$$

WEISSER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 3:13 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	62 min
Jul 1, 3:31 PM CDT	Tornado Warning	FSD	Lincoln, Pipestone	29 min
Jul 1, 3:41 PM CDT	Flash Flood Warning	FSD	Lincoln, Pipestone	100 min
Jul 1, 3:51 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon, Murray	39 min
Jul 1, 4:02 PM CDT	Flash Flood Warning	FSD	Lyon, Murray	3 hr
Jul 1, 4:13 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	32 min
Jul 1, 5:05 PM CDT	Severe Thunderstorm Warning	FSD	Murray, Nobles, Pipestone, Rock	25 min
Jul 1, 5:44 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson, Murray, Nobles	46 min
Jul 1, 6:27 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood	16 min

Nearby

Tornado Warnings in Minnesota, 2011 Every tornado warning in 2011 Tornadoes in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.