Alert archive / North Dakota / Tornado Warnings in 2012
Tornado Warning 7, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jun 20, 2012, 6:56 PM CDT for Grand Forks County, North Dakota. It was in force for 34 min. 2 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
- Jun 20, 2012, 6:56 PM CDT (23:56 UTC)
- Expired
- Jun 20, 2012, 7:30 PM CDT
- In force
- 34 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
County Grand Forks County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 36 km from the middle of the area, began a volume at 23:56 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 |
|---|---|---|---|
| Jun 20, 7:02 PM CDT | TORNADO 1 | 7 Ene Northwood, ND | THIS ROPE LIKE TORNADO LASTED FOR OVER 4 MINUTES AND TRACKED DUE EAST FOR NEARLY TWO MILE IN THE FAR NORTHWEST CORNER OF UNION TOWNSHIP. SEVERAL TREE TOPS WERE SNAPPED IN FIELD SHELTER BELTS AND AT LEAST ONE TREE WAS UPROOTED NEAR A FARMSTEAD SHELTERBELT. MAXI |
| Jun 20, 7:25 PM CDT | HAIL 0.75 | 2 N Thompson, ND | ABOUT FOUR MINUTES OF PEA TO PENNY SIZED HAIL ALONG WITH VERY STRONG WINDS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.9 hours before the alert went out and 293 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.
- Mixed-layer CAPE
- 9 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1176 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
937
WFUS53 KFGF 202356
TORFGF
NDC035-210030-
/O.NEW.KFGF.TO.W.0007.120620T2356Z-120621T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
656 PM CDT WED JUN 20 2012
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA...
* UNTIL 730 PM CDT
* AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
LOCATED 4 MILES SOUTHEAST OF ARVILLA...OR 18 MILES WEST OF GRAND
FORKS...MOVING TO THE EAST AT 25 MPH. NUMEROUS REPORTS OF FUNNELS
HAVE BEEN RECEIVED FROM THIS STORM.VG
* THE TORNADIC STORM WILL BE NEAR...
THOMPSON AROUND 730 PM CDT.
FOR MOTORISTS ON INTERSTATE 29...THE TORNADIC STORM WILL BE
BETWEEN...MILE MARKER 138 AROUND 725 PM CDT...AND MILE MARKER 124
AROUND 730 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 4789 9702 4787 9702 4787 9700 4779 9696
4767 9701 4767 9704 4777 9758 4797 9752
TIME...MOT...LOC 2356Z 282DEG 23KT 4786 9741
$$
VG2 follow-up statements
144
WWUS53 KFGF 210009
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
709 PM CDT WED JUN 20 2012
NDC035-210030-
/O.CON.KFGF.TO.W.0007.000000T0000Z-120621T0030Z/
GRAND FORKS ND-
709 PM CDT WED JUN 20 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN GRAND FORKS
COUNTY IN NORTHEAST NORTH DAKOTA UNTIL 730 PM CDT...
AT 705 PM CDT...WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 5 MILES
SOUTH OF EMERADO...OR 13 MILES SOUTHWEST OF GRAND FORKS...MOVING TO
THE EAST AT 25 MPH.
THE DEVELOPING TORNADO WILL BE NEAR...
THOMPSON AROUND 730 PM CDT.
FOR MOTORISTS ON INTERSTATE 29...THE DEVELOPING TORNADO WILL BE
BETWEEN...MILE MARKERS 130 AND 136 AROUND 730 PM CDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.
&&
LAT...LON 4794 9728 4789 9702 4787 9702 4787 9700
4786 9699 4779 9696 4767 9701 4774 9740
4795 9741
TIME...MOT...LOC 0008Z 282DEG 23KT 4784 9730
$$
VG825
WWUS53 KFGF 210030
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
730 PM CDT WED JUN 20 2012
NDC035-210040-
/O.EXP.KFGF.TO.W.0007.000000T0000Z-120621T0030Z/
GRAND FORKS ND-
730 PM CDT WED JUN 20 2012
...THE TORNADO WARNING FOR SOUTHEASTERN GRAND FORKS COUNTY IN
NORTHEAST NORTH DAKOTA HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.
LAT...LON 4794 9728 4789 9702 4787 9702 4787 9700
4786 9699 4779 9696 4767 9701 4774 9740
4795 9741
TIME...MOT...LOC 0030Z 282DEG 23KT 4781 9710
$$
VGThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 3:26 PM CDT | Special Weather Statement | FGF | Ramsey | 64 min |
| Jun 20, 3:40 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey, Towner | 65 min |
| Jun 20, 5:42 PM CDT | Special Weather Statement | FGF | Nelson | 63 min |
Nearby
Tornado Warnings in North Dakota, 2012Every tornado warning in 2012Tornadoes 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.