Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 52, NWS Grand Forks, ND

July 2, 20124 counties in Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 2, 2012, 7:27 PM CDT for 4 counties in Minnesota. It was in force for 63 min. 4 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: Jul 2, 2012, 7:27 PM CDT (00:27 UTC)
Expired: Jul 2, 2012, 8:30 PM CDT
In force: 63 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Becker County, MN, Hubbard County, MN, Otter Tail County, MN, Wadena County, MN

The radar

The Duluth radar (KDLH), 204 km from the middle of the area, began a volume at 00:28 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
Jul 2, 7:30 PM CDT	HAIL 1	Menahga, MN
Jul 2, 7:31 PM CDT	TSTM WND GST 58	Park Rapids, MN
Jul 2, 7:37 PM CDT	TSTM WND GST 58	Park Rapids, MN
Jul 2, 7:55 PM CDT	HAIL 0.88	Menahga, MN

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
Jul 2, 6:54 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 228 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: 2216 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 2064 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.5

Open this sounding in Storm Lab

The text

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

139 
WUUS53 KFGF 030027
SVRFGF
MNC005-057-111-159-030130-
/O.NEW.KFGF.SV.W.0052.120703T0027Z-120703T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
727 PM CDT MON JUL 2 2012

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BECKER COUNTY IN NORTHWEST MINNESOTA...
  SOUTHERN HUBBARD COUNTY IN NORTH CENTRAL MINNESOTA...
  NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA...
  WADENA COUNTY IN CENTRAL MINNESOTA...

* UNTIL 830 PM CDT

* AT 721 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 70 MPH. THE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 2 MILES SOUTH OF LAPORTE TO
  6 MILES EAST OF PERHAM...MOVING TO THE EAST AT 30 MPH. THESE
  STORMS PRODUCED WIDESPREAD DAMAGE TO TREES AND POWER LINES IN THE 
  BEMIDJI AREA AND ONE INCH HAIL NEAR SNELLMAN.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NEW YORK MILLS...DORSET AND BENEDICT AROUND 735 PM CDT.
  HILLVIEW AROUND 740 PM CDT.
  NEVIS AND HUBBARD AROUND 745 PM CDT.
  MENAHGA AROUND 750 PM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORMS
INCLUDE AKELEY...BLUFFTON...SEBEKA...WADENA AND VERNDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

THE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!

&&

LAT...LON 4680 9477 4640 9477 4638 9472 4636 9473
      4636 9508 4658 9575 4726 9488 4725 9465
      4681 9465
TIME...MOT...LOC 0025Z 277DEG 16KT 4718 9472 4663 9543
WIND...HAIL 70MPH 1.00IN

$$

HOPKINS

2 follow-up statements

251 
WWUS53 KFGF 030101
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
801 PM CDT MON JUL 2 2012

MNC005-111-030109-
/O.CAN.KFGF.SV.W.0052.000000T0000Z-120703T0130Z/
OTTER TAIL MN-BECKER MN-
801 PM CDT MON JUL 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BECKER COUNTY IN
NORTHWEST MINNESOTA...AND NORTHEASTERN OTTER TAIL COUNTY IN WEST
CENTRAL MINNESOTA IS CANCELLED...

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

LAT...LON 4680 9477 4640 9477 4638 9472 4636 9473
      4636 9508 4638 9514 4650 9515 4678 9515
      4703 9488 4703 9465 4681 9465
TIME...MOT...LOC 0059Z 277DEG 16KT 4695 9460 4658 9511

$$

MNC057-159-030130-
/O.CON.KFGF.SV.W.0052.000000T0000Z-120703T0130Z/
HUBBARD MN-WADENA MN-
801 PM CDT MON JUL 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WADENA COUNTY
IN CENTRAL MINNESOTA...AND SOUTHEASTERN HUBBARD COUNTY IN NORTH
CENTRAL MINNESOTA UNTIL 830 PM CDT...

AT 758 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 4 MILES WEST OF HACKENSACK TO 4 
MILES SOUTHWEST OF SEBEKA...MOVING TO THE EAST AT 20 MPH. THE STORM 
HAS PRODUCED QUARTER SIZED HAIL IN MENAHGA AND 58 MPH WINDS IN PARK 
RAPIDS.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BLUE GRASS AROUND 815 PM CDT.
  VERNDALE AND NIMROD AROUND 820 PM CDT.
  STAPLES AIRPORT...OYLEN AND ALDRICH AROUND 830 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

THE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4680 9477 4640 9477 4638 9472 4636 9473
      4636 9508 4638 9514 4650 9515 4678 9515
      4703 9488 4703 9465 4681 9465
TIME...MOT...LOC 0059Z 277DEG 16KT 4695 9460 4658 9511
WIND...HAIL 60MPH 1.00IN

$$

HOPKINS

574 
WWUS53 KFGF 030127
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
827 PM CDT MON JUL 2 2012

MNC057-159-030136-
/O.EXP.KFGF.SV.W.0052.000000T0000Z-120703T0130Z/
HUBBARD MN-WADENA MN-
827 PM CDT MON JUL 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR WADENA COUNTY IN CENTRAL
MINNESOTA...AND SOUTHEASTERN HUBBARD COUNTY IN NORTH CENTRAL
MINNESOTA WILL EXPIRE AT 830 PM CDT...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT.

LAT...LON 4680 9477 4640 9477 4638 9472 4636 9473
      4636 9508 4638 9514 4650 9515 4678 9515
      4703 9488 4703 9465 4681 9465
TIME...MOT...LOC 0126Z 277DEG 16KT 4693 9442 4657 9494

$$

HOPKINS

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 7:19 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Beltrami, Clearwater, Hubbard	56 min
Jul 2, 10:42 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Otter Tail, Wilkin	48 min
Jul 2, 11:06 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail, Wadena	39 min
Jul 2, 11:26 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	49 min
Jul 3, 12:02 AM CDT	Severe Thunderstorm Warning	FGF	Otter Tail, Wadena	58 min
Jul 3, 4:17 AM CDT	Heat Advisory	FGF	Grant, Otter Tail, Wadena, Wilkin	15 hr

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.