Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 210, NWS Twin Cities, MN

August 1, 2011Benton County, Kandiyohi County, Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 1, 2011, 10:53 AM CDT for Benton County, Kandiyohi County, Stearns County, Minnesota. It was in force for 67 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 1, 2011, 10:53 AM CDT (15:53 UTC)
Expired: Aug 1, 2011, 12:00 PM CDT
In force: 67 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Benton County, MN, Kandiyohi County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 99 km from the middle of the area, began a volume at 15:53 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 1, 4:57 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 3.9 hours before the alert went out and 97 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: 2974 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 898 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

906 
WUUS53 KMPX 011553
SVRMPX
MNC009-067-145-011700-
/O.NEW.KMPX.SV.W.0210.110801T1553Z-110801T1700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1053 AM CDT MON AUG 1 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BENTON COUNTY IN CENTRAL MINNESOTA...
  NORTHERN KANDIYOHI COUNTY IN CENTRAL MINNESOTA...
  STEARNS COUNTY IN CENTRAL MINNESOTA...

* UNTIL NOON CDT

* AT 1048 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM ST ROSA TO ELROSA
  TO BELGRADE...AND MOVING EAST AT 40 MPH.  PENNY SIZE HAIL MAY ALSO
  ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IN THE WARNING INCLUDE...
  ST CLOUD...
  FREEPORT...
  NEW MUNICH...
  BELGRADE...
  ST ROSA...
  MELROSE...
  GEORGEVILLE...
  LAKE HENRY...
  ALBANY...
  HOLDINGFORD...
  FARMING...
  PAYNESVILLE...
  AVON...
  ROSCOE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL. SEEK SHELTER NOW INSIDE
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4579 9382 4556 9393 4556 9414 4550 9414
      4545 9408 4532 9427 4536 9523 4555 9493
      4577 9472
TIME...MOT...LOC 1553Z 270DEG 36KT 4576 9461 4555 9478
          4542 9498
WIND...HAIL 60MPH 0.75IN

$$

1 follow-up statement

096 
WWUS53 KMPX 011623
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1123 AM CDT MON AUG 1 2011

MNC009-067-145-011700-
/O.CON.KMPX.SV.W.0210.000000T0000Z-110801T1700Z/
BENTON MN-KANDIYOHI MN-STEARNS MN-
1123 AM CDT MON AUG 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR STEARNS...
NORTHEASTERN KANDIYOHI AND BENTON COUNTIES UNTIL NOON CDT...

AT 1120 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM ST STEPHEN TO COLD SPRING TO MANANNAH...
MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  ST CLOUD...SARTELL...ST NICHOLAS...PLEASANT LAKE...WAITE PARK...
  SAUK RAPIDS...MAYHEW...LUXEMBURG...GILMAN...ST AUGUSTA...PARENT...
  FOLEY...ROCKVILLE AND DUELM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4556 9393 4556 9414 4554 9414 4553 9415
      4550 9414 4545 9408 4532 9427 4536 9502
      4576 9454 4579 9382
TIME...MOT...LOC 1622Z 290DEG 36KT 4569 9421 4549 9440
          4535 9458
WIND...HAIL 70MPH 1.00IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 6:25 AM CDT	Areal Flood Advisory	MPX	Douglas, Pope, Stevens	6 hr
Aug 1, 6:45 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens, Todd	45 min
Aug 1, 7:13 AM CDT	Tornado Warning	MPX	Douglas, Pope	47 min
Aug 1, 7:27 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Kandiyohi, Morrison, Pope, Stearns, Todd	63 min
Aug 1, 8:13 AM CDT	Areal Flood Advisory	MPX	Kandiyohi, Meeker, Pope, Stearns	3 hr
Aug 1, 9:00 AM CDT	Special Weather Statement	MPX	Benton, Sherburne, Stearns, Wright	60 min
Aug 1, 9:39 AM CDT	Flash Flood Warning	MPX	Douglas, Pope	3 hr
Aug 1, 9:44 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	46 min
Aug 1, 11:09 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	66 min
Aug 1, 11:53 AM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Stearns, Wright	67 min
Aug 1, 12:03 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Meeker, Renville, Sibley	57 min
Aug 1, 12:45 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin	45 min
Aug 1, 1:01 PM CDT	Areal Flood Advisory	MPX	Carver, Dakota, Hennepin, Ramsey, Scott	3 hr
Aug 1, 1:18 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Le Sueur, Rice, Scott, Sibley	57 min
Aug 1, 1:25 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey, Washington	65 min
Aug 1, 2:02 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Le Sueur, Rice, Steele, Waseca	58 min
Aug 1, 3:04 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	37 min
Aug 1, 3:54 PM CDT	Special Weather Statement	MPX	Anoka, Chisago, Isanti, Mille Lacs	51 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning 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.