Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 155, NWS Twin Cities, MN

August 31, 2013Benton County, Sherburne County, Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 2013, 5:47 PM CDT for Benton County, Sherburne County, Stearns County, Minnesota. It was in force for 28 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 31, 2013, 5:47 PM CDT (22:47 UTC)
Expired: Aug 31, 2013, 6:15 PM CDT
In force: 28 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Benton County, MN, Sherburne County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 98 km from the middle of the area, began a volume at 22:50 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
Aug 31, 2:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 96 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.

107 
WUUS53 KMPX 312247
SVRMPX
MNC009-141-145-312315-
/O.NEW.KMPX.SV.W.0155.130831T2247Z-130831T2315Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN BENTON COUNTY IN CENTRAL MINNESOTA...
  NORTHWESTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...
  STEARNS COUNTY IN CENTRAL MINNESOTA...

* UNTIL 615 PM CDT

* AT 546 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 12 MILES NORTH OF ALBANY TO ALBANY TO PAYNESVILLE...
  AND MOVING EAST AT 55 MPH.

  HAZARD...70 MPH WIND GUSTS.

  SOURCE...TRAINED WEATHER SPOTTERS.

  IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO
           MOBILE HOMES...ROOFS AND OUTBUILDINGS.

* LOCATIONS IMPACTED INCLUDE...
  ST CLOUD...PAYNESVILLE...ALBANY...SAUK RAPIDS...FARMING...ROSCOE...
  HOLDINGFORD...AVON...RICHMOND...EDEN VALLEY...COLLEGEVILLE...
  OPOLE...COLD SPRING...ST JOSEPH...ST NICHOLAS...ST STEPHEN...
  ROCKVILLE...PLEASANT LAKE...RICE AND WAITE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

WIND DAMAGE WITH THESE STORMS WILL OCCUR BEFORE ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4557 9395 4542 9404 4538 9409 4534 9409
      4532 9413 4533 9476 4541 9477 4542 9489
      4559 9478 4578 9477 4577 9428 4582 9435
      4582 9391
TIME...MOT...LOC 2247Z 272DEG 50KT 4580 9462 4559 9462
          4541 9473

HAIL...<.75IN
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, 4:55 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	35 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, 5:53 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.