Alert archive / Minnesota / Tornado Warnings in 2014

Tornado Warning 44, NWS Sioux Falls, SD

June 18, 2014Lyon County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jun 18, 2014, 10:28 PM CDT for Lyon County, Minnesota. It was in force for 32 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: Jun 18, 2014, 10:28 PM CDT (03:28 UTC)
Expired: Jun 18, 2014, 11:00 PM CDT
In force: 32 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Observed
Hail: 1.25 in

County Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 137 km from the middle of the area, began a volume at 03:31 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.

Issued	Product	Office	Lasted
Jun 18, 10:09 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.5 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: 47 J/kg
Mixed-layer CIN: -493 J/kg
Mixed-layer LCL: 1291 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 186 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.

353 
WFUS53 KFSD 190328
TORFSD
MNC083-190400-
/O.NEW.KFSD.TO.W.0044.140619T0328Z-140619T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1028 PM CDT WED JUN 18 2014

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN LYON COUNTY IN SOUTHWEST MINNESOTA...

* UNTIL 1100 PM CDT

* AT 1026 PM CDT...A CONFIRMED TORNADO WAS LOCATED 3 MILES NORTHEAST
  OF MARSHALL...AND MOVING NORTHEAST AT 10 MPH.

  HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR CONFIRMED TORNADO.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
           LIKELY.

* THE TORNADO WILL BE NEAR...
  COTTONWOOD AROUND 1050 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.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4462 9560 4454 9558 4445 9558 4442 9560
      4443 9584 4463 9578 4464 9577 4463 9561
TIME...MOT...LOC 0329Z 239DEG 10KT 4450 9568

TORNADO...OBSERVED
HAIL...1.25IN

$$

WEISSER

1 follow-up statement

418 
WWUS53 KFSD 190356
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1056 PM CDT WED JUN 18 2014

MNC083-190406-
/O.EXP.KFSD.TO.W.0044.000000T0000Z-140619T0400Z/
LYON MN-
1056 PM CDT WED JUN 18 2014

...THE TORNADO WARNING FOR NORTHEASTERN LYON COUNTY WILL EXPIRE AT
1100 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.  HOWEVER...GUSTY WINDS TO AROUND 40 MPH ARE STILL POSSIBLE 
WITH THIS THUNDERSTORM.

LAT...LON 4462 9560 4454 9558 4445 9558 4442 9560
      4443 9584 4463 9578 4464 9577 4463 9561
TIME...MOT...LOC 0356Z 239DEG 10KT 4458 9559

$$

WEISSER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 9:49 PM CDT	Tornado Warning	FSD	Lyon	41 min
Jun 18, 10:30 PM CDT	Tornado Warning	FSD	Lyon	30 min
Jun 18, 10:33 PM CDT	Flash Flood Warning	FSD	Lyon	10 hr
Jun 19, 8:27 AM CDT	Areal Flood Warning	FSD	Lyon	12 hr

Nearby

Tornado Warnings in Minnesota, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.