Alert archive / Minnesota / Tornado Warnings in 2015

Tornado Warning 33, NWS Twin Cities, MN

August 6, 2015Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 6, 2015, 5:23 PM CDT for Yellow Medicine County, Minnesota. It was in force for 37 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
Aug 6, 2015, 5:23 PM CDT (22:23 UTC)
Expired
Aug 6, 2015, 6:00 PM CDT
In force
37 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 131 km from the middle of the area, began a volume at 22:25 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
Aug 6, 3:23 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 177 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 2015-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 638 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 2015-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.193958Sfc1 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
638 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
25 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.

729 
WFUS53 KMPX 062223
TORMPX
MNC173-062300-
/O.NEW.KMPX.TO.W.0033.150806T2223Z-150806T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
523 PM CDT THU AUG 6 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 600 PM CDT
    
* AT 523 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER PORTER...OR 23 MILES EAST OF CLEAR LAKE...
  MOVING EAST AT 35 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  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. 

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  SOUTHWESTERN YELLOW MEDICINE COUNTY...INCLUDING THE FOLLOWING
  LOCATIONS...ST. LEO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4473 9632 4475 9598 4463 9596 4463 9629
TIME...MOT...LOC 2223Z 265DEG 31KT 4467 9621 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

CLF
1 follow-up statement
095 
WWUS53 KMPX 062254
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
554 PM CDT THU AUG 6 2015

MNC173-062304-
/O.EXP.KMPX.TO.W.0033.000000T0000Z-150806T2300Z/
YELLOW MEDICINE MN-
554 PM CDT THU AUG 6 2015

...THE TORNADO WARNING FOR SOUTHWESTERN YELLOW MEDICINE COUNTY WILL
EXPIRE AT 600 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
WEST CENTRAL MINNESOTA.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
A LARGE PORTION OF YELLOW MEDICINE COUNTY.

LAT...LON 4473 9632 4475 9598 4463 9596 4463 9629
TIME...MOT...LOC 2251Z 265DEG 31KT 4467 9621 

$$

CLF

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 3:16 PM CDTSpecial Weather StatementMPXDouglas, Pope, Todd59 min
Aug 6, 4:07 PM CDTSpecial Weather StatementMPXLac qui Parle53 min
Aug 6, 4:09 PM CDTTornado Warning Tornado observedMPXKandiyohi, Swift36 min
Aug 6, 4:18 PM CDTSpecial Weather StatementMPXTodd42 min
Aug 6, 4:44 PM CDTTornado WarningMPXKandiyohi31 min
Aug 6, 4:54 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd30 min
Aug 6, 5:13 PM CDTSevere Thunderstorm WarningMPXYellow Medicine32 min
Aug 6, 5:14 PM CDTTornado Warning Tornado observedMPXKandiyohi31 min
Aug 6, 5:29 PM CDTFlash Flood WarningMPXKandiyohi3 hr
Aug 6, 5:45 PM CDTTornado WarningMPXKandiyohi30 min
Aug 6, 5:46 PM CDTSevere Thunderstorm WarningMPXYellow Medicine44 min
Aug 6, 6:10 PM CDTTornado Warning Tornado observedMPXMeeker, Stearns23 min
Aug 6, 6:33 PM CDTSpecial Weather StatementMPXRedwood, Renville57 min

Nearby

Tornado Warnings in Minnesota, 2015Every tornado warning in 2015Tornadoes in 2015

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.