Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 150, NWS Twin Cities, MN

August 31, 2013Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 2013, 4:55 PM CDT for Douglas County, Minnesota. It was in force for 35 min. 2 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: Aug 31, 2013, 4:55 PM CDT (21:55 UTC)
Expired: Aug 31, 2013, 5:30 PM CDT
In force: 35 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 189 km from the middle of the area, began a volume at 21:55 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
Aug 31, 5:07 PM CDT	TSTM WND DMG	Millerville, MN	TREES BEING TWISTED BY WIND
Aug 31, 5:07 PM CDT	TSTM WND GST 0	Millerville, MN	TREES BEING TWISTED BY WIND

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
Aug 31, 2:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.9 hours before the alert went out and 186 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: 75 J/kg
Mixed-layer CIN: -389 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 54 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.

280 
WUUS53 KMPX 312155
SVRMPX
MNC041-312230-
/O.NEW.KMPX.SV.W.0150.130831T2155Z-130831T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
455 PM CDT SAT AUG 31 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 530 PM CDT

* AT 452 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 9 MILES SOUTHEAST OF BATTLE LAKE TO 9 MILES
  NORTHEAST OF HOFFMAN TO 8 MILES SOUTHEAST OF HOFFMAN...AND MOVING
  EAST AT 35 MPH.

  HAZARD...QUARTER SIZE HAIL AND 70 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED. A 70 MPH WIND GUST WAS REPORTED IN 
           EVANSVILLE AT 450 PM CDT.            

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
           ROOFS AND OUTBUILDINGS.

* LOCATIONS IMPACTED INCLUDE...
  ALEXANDRIA...LAKE CARLOS STATE PARK...BRANDON...MILLERVILLE...
  HOLMES...GARFIELD...LEAF VALLEY...ALEXANDRIA AP...FORADA...
  MILTONA...CARLOS...NELSON...BELLE RIVER...ROSE CITY AND OSAKIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4611 9515 4576 9514 4576 9563 4577 9566
      4590 9562 4611 9563
TIME...MOT...LOC 2155Z 270DEG 31KT 4617 9560 4593 9563
          4575 9564

HAIL...1.00IN
WIND...70MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 4:07 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	38 min
Aug 31, 4:32 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope	43 min
Aug 31, 4:34 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle	41 min
Aug 31, 4:43 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stevens, Swift	47 min
Aug 31, 4:47 PM CDT	Severe Thunderstorm Warning	MPX	Swift	43 min
Aug 31, 5:12 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Renville, Swift	48 min
Aug 31, 5:20 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns, Todd	55 min
Aug 31, 5:30 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns, Swift	45 min
Aug 31, 5:41 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	19 min
Aug 31, 5:47 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne, Stearns	28 min
Aug 31, 5:53 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Redwood, Renville, Yellow Medicine	37 min
Aug 31, 5:58 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	47 min
Aug 31, 6:06 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Renville	39 min
Aug 31, 6:22 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	38 min
Aug 31, 6:53 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Redwood, Renville	52 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.