Alert archive / Minnesota / Tornado Warnings in 2012

Tornado Warning 8, NWS Grand Forks, ND

July 4, 2012Wadena County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 4, 2012, 8:55 PM CDT for Wadena County, Minnesota. It was in force for 50 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: Jul 4, 2012, 8:55 PM CDT (01:55 UTC)
Expired: Jul 4, 2012, 9:45 PM CDT
In force: 50 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon

County Wadena County, MN

The radar

The Duluth radar (KDLH), 208 km from the middle of the area, began a volume at 01:57 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
Jul 4, 8:55 PM CDT	TSTM WND DMG	Sebeka, MN	POWER LINES DOWN...AT LEAST ONE TREE AND MULTIPLE BRANCHES BLOWN DOWN.

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 4, 7:31 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.9 hours before the alert went out and 212 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: 2542 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1972 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

811 
WFUS53 KFGF 050155
TORFGF
MNC159-050245-
/O.NEW.KFGF.TO.W.0008.120705T0155Z-120705T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
855 PM CDT WED JUL 4 2012

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  WADENA COUNTY IN CENTRAL MINNESOTA...

* UNTIL 945 PM CDT

* AT 850 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
  LOCATED NEAR SEBEKA...OR 38 MILES EAST OF DETROIT LAKES...MOVING TO
  THE SOUTHEAST AT 25 MPH.

  IN ADDITION...AT 840 PM GOLFBALL SIZED HAIL WAS REPORTED IN MENAHGA 
  WITH THIS STORM.

* THE TORNADIC STORM WILL BE NEAR...
  BLUE GRASS AROUND 905 PM CDT.
  NIMROD AROUND 910 PM CDT.
  OYLEN AROUND 925 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4636 9487 4657 9516 4681 9504 4667 9478
      4656 9477 4640 9477
TIME...MOT...LOC 0154Z 305DEG 21KT 4663 9504

$$

JR

3 follow-up statements

727 
WWUS53 KFGF 050212
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
912 PM CDT WED JUL 4 2012

MNC159-050245-
/O.CON.KFGF.TO.W.0008.000000T0000Z-120705T0245Z/
WADENA MN-
912 PM CDT WED JUL 4 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR WADENA COUNTY IN CENTRAL
MINNESOTA UNTIL 945 PM CDT...

AT 909 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES EAST OF
BLUE GRASS...OR 46 MILES SOUTHEAST OF DETROIT LAKES...MOVING TO THE
SOUTHEAST AT 15 MPH.

THE TORNADIC STORM WILL BE NEAR...
  OYLEN AROUND 930 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4636 9487 4653 9511 4677 9497 4667 9478
      4656 9477 4640 9477
TIME...MOT...LOC 0212Z 298DEG 14KT 4655 9494

$$

JAR

943 
WWUS53 KFGF 050234
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
934 PM CDT WED JUL 4 2012

MNC159-050245-
/O.CON.KFGF.TO.W.0008.000000T0000Z-120705T0245Z/
WADENA MN-
934 PM CDT WED JUL 4 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN WADENA COUNTY IN
CENTRAL MINNESOTA UNTIL 945 PM CDT...

AT 927 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES SOUTHWEST
OF OYLEN...OR 50 MILES SOUTHEAST OF DETROIT LAKES...MOVING TO THE 
SOUTHEAST AT 15 MPH.  THE STORM APPEARS TO HAVE TWO 
CIRCULATIONS...ONE SOUTHWEST OF OYLEN AND ANOTHER 7 MILES NORTH OF 
STAPLES AIRPORT.  

THE TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN WADENA
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4636 9487 4649 9499 4672 9487 4667 9478
      4656 9477 4640 9477
TIME...MOT...LOC 0230Z 298DEG 14KT 4652 9485

$$

JAR

369 
WWUS53 KFGF 050243
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
943 PM CDT WED JUL 4 2012

MNC159-050253-
/O.EXP.KFGF.TO.W.0008.000000T0000Z-120705T0245Z/
WADENA MN-
943 PM CDT WED JUL 4 2012

...THE TORNADO WARNING FOR EASTERN WADENA COUNTY IN CENTRAL MINNESOTA
WILL EXPIRE AT 945 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 2 AM CDT.

LAT...LON 4636 9487 4649 9499 4672 9487 4667 9478
      4656 9477 4640 9477
TIME...MOT...LOC 0243Z 296DEG 33KT 4647 9471

$$

JAR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:52 PM CDT	Special Weather Statement	FGF	Hubbard	38 min
Jul 4, 8:12 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Hubbard, Wadena	63 min

Nearby

Tornado Warnings in Minnesota, 2012 Every tornado warning in 2012 Tornadoes 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.