Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 245, NWS Twin Cities, MN

August 3, 2012Douglas County, Pope County, Stevens County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 3, 2012, 8:26 PM CDT for Douglas County, Pope County, Stevens County, Minnesota. It was in force for 49 min. 1 report 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 3, 2012, 8:26 PM CDT (01:26 UTC)
Expired: Aug 3, 2012, 9:15 PM CDT
In force: 49 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Douglas County, MN, Pope County, MN, Stevens County, MN

The radar

The Aberdeen radar (KABR), 203 km from the middle of the area, began a volume at 01:30 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 3, 9:15 PM CDT	TSTM WND DMG	3 S Glenwood, MN	FEW TREES DOWN NEAR THE SOUTHEAST SIDE OF LAKE MINNEWASKA.

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 3, 7:33 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 201 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: 576 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1840 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

389 
WUUS53 KMPX 040126
SVRMPX
MNC041-121-149-040215-
/O.NEW.KMPX.SV.W.0245.120804T0126Z-120804T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
826 PM CDT FRI AUG 3 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 915 PM CDT

* AT 824 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 8 MILES NORTHEAST OF ELBOW LAKE
  TO 7 MILES NORTHWEST OF DONNELLY TO ALBERTA TO 8 MILES EAST OF
  ARTICHOKE...AND MOVING EAST AT 50 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MORRIS...
  GLENWOOD...
  ALEXANDRIA...
  CHOKIO...
  ALBERTA...
  DONNELLY...
  HANCOCK...
  EVANSVILLE...
  CYRUS...
  MILLERVILLE...
  KENSINGTON...
  BRANDON...
  STARBUCK...
  GARFIELD...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4576 9624 4577 9577 4597 9578 4612 9576
      4612 9518 4573 9518 4541 9534 4540 9619
      4542 9625 4573 9626
TIME...MOT...LOC 0126Z 253DEG 45KT 4611 9587 4577 9608
          4556 9607 4538 9596
WIND...HAIL 60MPH <.75IN

$$
SPD/DE

1 follow-up statement

591 
WWUS53 KMPX 040209
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
909 PM CDT FRI AUG 3 2012

MNC149-040223-
/O.CAN.KMPX.SV.W.0245.000000T0000Z-120804T0215Z/
STEVENS MN-
909 PM CDT FRI AUG 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR STEVENS COUNTY IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4612 9519 4574 9518 4541 9534 4544 9574
      4597 9578 4612 9576
TIME...MOT...LOC 0208Z 253DEG 45KT 4626 9514 4592 9536
          4571 9535 4553 9524

$$

MNC041-121-040215-
/O.CON.KMPX.SV.W.0245.000000T0000Z-120804T0215Z/
DOUGLAS MN-POPE MN-
909 PM CDT FRI AUG 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR POPE AND
DOUGLAS COUNTIES UNTIL 915 PM CDT...

AT 905 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES WEST OF
BERTHA TO ALEXANDRIA TO GLENWOOD TO SEDAN...MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  CARLOS...VILLARD...NELSON AND BELLE RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4612 9519 4574 9518 4541 9534 4544 9574
      4597 9578 4612 9576
TIME...MOT...LOC 0208Z 253DEG 45KT 4626 9514 4592 9536
          4571 9535 4553 9524
WIND...HAIL 60MPH <.75IN

$$
SPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 7:14 PM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Swift, Yellow Medicine	46 min
Aug 3, 7:37 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	53 min
Aug 3, 8:20 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Renville, Swift, Yellow Medicine	55 min
Aug 3, 9:01 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood, Renville, Yellow Medicine	59 min
Aug 3, 9:07 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Meeker, Pope, Renville, Stearns and 2 more	53 min
Aug 3, 9:47 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, McLeod, Nicollet, Redwood, Renville and 1 more	58 min
Aug 3, 9:52 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Renville, Sherburne, Stearns, Wright	38 min
Aug 3, 10:25 PM CDT	Special Weather Statement	MPX	Anoka, Carver, Hennepin, McLeod, Sherburne, Wright	65 min
Aug 3, 10:29 PM CDT	Special Weather Statement	MPX	Le Sueur, Nicollet, Rice, Scott	61 min
Aug 3, 10:39 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin	36 min
Aug 3, 10:44 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Benton, Isanti, Mille Lacs, Sherburne, Wright	46 min
Aug 3, 10:54 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Carver, Hennepin, Sherburne, Wright	25 min
Aug 3, 11:01 PM CDT	Special Weather Statement	MPX	Blue Earth, Faribault, Freeborn, Martin, Steele, Waseca	44 min
Aug 3, 11:06 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Carver, Chisago, Dakota, Hennepin, Ramsey and 2 more	39 min
Aug 3, 11:12 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Isanti	33 min
Aug 3, 11:18 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice, Scott, Washington	42 min
Aug 3, 11:38 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	67 min
Aug 3, 11:44 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	61 min
Aug 4, 12:19 AM CDT	Special Weather Statement	MPX	Brown	26 min
Aug 4, 1:13 AM CDT	Special Weather Statement	MPX	Martin	47 min
Aug 4, 1:25 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	65 min
Aug 4, 4:28 AM CDT	Special Weather Statement	MPX	Faribault	47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning in 2012

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.