Alert archive / Minnesota / Tornado Warnings in 2011

Tornado Warning 36, NWS Sioux Falls, SD

July 1, 2011Moody County, South Dakota; Lincoln County, Pipestone County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jul 1, 2011, 3:31 PM CDT for Moody County, South Dakota; Lincoln County, Pipestone County, Minnesota. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 1, 2011, 3:31 PM CDT (20:31 UTC)
Expired
Jul 1, 2011, 4:00 PM CDT
In force
29 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon

Counties Lincoln County, MN, Pipestone County, MN, Moody County, SD

The radar

The Sioux Falls radar (KFSD), 69 km from the middle of the area, began a volume at 20:33 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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 1, 2:08 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.5 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, Aberdeen, SD at 12:00Z on 2011-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 407 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2011-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -270 square meters per square second.19395878Sfc1 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
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.

483 
WFUS53 KFSD 012031
TORFSD
MNC081-117-SDC101-012100-
/O.NEW.KFSD.TO.W.0036.110701T2031Z-110701T2100Z/

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

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN LINCOLN COUNTY IN SOUTHWEST MINNESOTA...
  NORTHERN PIPESTONE COUNTY IN SOUTHWEST MINNESOTA...
  NORTHEASTERN MOODY COUNTY IN EAST CENTRAL SOUTH DAKOTA...

* UNTIL 400 PM CDT

* AT 331 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
  DANGEROUS STORM WAS LOCATED NEAR FLANDREAU...OR 16 MILES WEST OF
  PIPESTONE...AND MOVING EAST AT 45 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  WARD AROUND 340 PM CDT...
  HOLLAND AROUND 355 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 4424 9621 4404 9611 4401 9654 4417 9664
TIME...MOT...LOC 2031Z 258DEG 39KT 4408 9657

$$

WEISSER
1 follow-up statement
404 
WWUS53 KFSD 012059
SVSFSD

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

MNC081-117-SDC101-012109-
/O.EXP.KFSD.TO.W.0036.000000T0000Z-110701T2100Z/
LINCOLN MN-PIPESTONE MN-MOODY SD-
359 PM CDT FRI JUL 1 2011

...THE TORNADO WARNING FOR NORTHEASTERN MOODY...NORTHERN PIPESTONE
AND SOUTHWESTERN LINCOLN COUNTIES WILL EXPIRE AT 400 PM CDT...

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 4424 9621 4404 9611 4401 9654 4417 9664
TIME...MOT...LOC 2059Z 258DEG 39KT 4414 9616

$$

WEISSER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 10:07 PM CDTSevere Thunderstorm WarningFSDBrule, Charles Mix, Gregory38 min
Jun 30, 10:47 PM CDTSevere Thunderstorm WarningFSDBrule43 min
Jun 30, 11:38 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Douglas, Gregory37 min
Jul 1, 12:10 PM CDTSevere Thunderstorm WarningFSDBeadle, Jerauld35 min
Jul 1, 12:40 PM CDTSevere Thunderstorm WarningFSDBeadle35 min
Jul 1, 1:11 PM CDTSevere Thunderstorm WarningFSDBeadle, Jerauld49 min
Jul 1, 2:14 PM CDTSevere Thunderstorm WarningFSDLake, McCook, Miner46 min
Jul 1, 2:18 PM CDTSevere Thunderstorm WarningFSDHutchinson, McCook, Turner42 min
Jul 1, 2:42 PM CDTSevere Thunderstorm WarningFSDLake, McCook, Minnehaha, Moody63 min
Jul 1, 3:13 PM CDTSevere Thunderstorm WarningFSDBrookings, Minnehaha, Moody62 min
Jul 1, 3:18 PM CDTTornado WarningFSDMoody27 min
Jul 1, 3:41 PM CDTFlash Flood WarningFSDBrookings, Moody100 min
Jul 1, 3:51 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon, Murray39 min
Jul 1, 3:53 PM CDTTornado WarningFSDLincoln21 min
Jul 1, 4:02 PM CDTFlash Flood WarningFSDLyon, Murray3 hr
Jul 1, 4:13 PM CDTSevere Thunderstorm WarningFSDLyon32 min
Jul 1, 5:05 PM CDTSevere Thunderstorm WarningFSDMurray, Nobles, Pipestone, Rock25 min
Jul 1, 5:44 PM CDTSevere Thunderstorm WarningFSDCottonwood, Jackson, Murray, Nobles46 min
Jul 1, 6:27 PM CDTSevere Thunderstorm WarningFSDCottonwood16 min

Nearby

Tornado Warnings in Minnesota, 2011Tornado Warnings in South Dakota, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.