Alert archive / North Dakota / Tornado Warnings in 2017

Tornado Warning 16, NWS Grand Forks, ND

June 9, 2017Eddy County, Nelson County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 9, 2017, 8:16 PM CDT for Eddy County, Nelson County, North Dakota. It was in force for 44 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 9, 2017, 8:16 PM CDT (01:16 UTC)
Expired: Jun 9, 2017, 9:00 PM CDT
In force: 44 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.0 in

Counties Eddy County, ND, Nelson County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 110 km from the middle of the area, began a volume at 01:17 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 9, 8:29 PM CDT	TORNADO 0	7 Ssw Warwick, ND	A WEAK TORNADO TRACK TO EAST FOR NEARLY 3 MILES ACROSS FAR SOUTHERN EDDY TOWNSHIP ENDING ABOUT 7 SW OF HAMAR BY 833 PM CDT. THIS TORNADO CROSS THE SOUTHERN END ON LAKE WASHINGTON WHERE A CONDENSATION PLUME WAS ONSERVED. LARGE BRANCHES AND LIMBS WERE BROKEN OFF
Jun 9, 8:35 PM CDT	HAIL 1.5	2 S Hamar, ND

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
Jun 9, 4:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.3 hours before the alert went out and 181 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: 1523 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 2862 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

014 
WFUS53 KFGF 100116
TORFGF
NDC027-063-100200-
/O.NEW.KFGF.TO.W.0016.170610T0116Z-170610T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Eastern ND/Grand Forks ND
816 PM CDT FRI JUN 9 2017

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Southwestern Nelson County in northeastern North Dakota...
  Eastern Eddy County in northeastern North Dakota...

* Until 900 PM CDT.

* At 815 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles north of Brantford, or 25 miles south of
  Devils Lake, moving east at 40 mph.

  HAZARD...Tornado and hail up to two inches in diameter. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This tornadic thunderstorm will remain over mainly rural areas of
  southwestern Nelson and eastern Eddy Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4771 9896 4780 9892 4783 9850 4759 9850
TIME...MOT...LOC 0115Z 258DEG 35KT 4774 9885 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Gust

2 follow-up statements

084 
WWUS53 KFGF 100146
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
846 PM CDT FRI JUN 9 2017

NDC063-100155-
/O.CAN.KFGF.TO.W.0016.000000T0000Z-170610T0200Z/
Nelson ND-
846 PM CDT FRI JUN 9 2017

...THE TORNADO WARNING FOR SOUTHWESTERN NELSON COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until midnight CDT for
northeastern North Dakota.

LAT...LON 4783 9853 4778 9852 4773 9853 4775 9864
      4781 9865
TIME...MOT...LOC 0145Z 267DEG 26KT 4779 9856 

$$

NDC027-100200-
/O.CON.KFGF.TO.W.0016.000000T0000Z-170610T0200Z/
Eddy ND-
846 PM CDT FRI JUN 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR EAST
CENTRAL EDDY COUNTY...
    
At 845 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Hamar, or 26 miles southeast of Devils Lake, moving
east at 30 mph.

HAZARD...Tornado and two inch hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This tornadic thunderstorm will remain over mainly rural areas of
east central Eddy County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4783 9853 4778 9852 4773 9853 4775 9864
      4781 9865
TIME...MOT...LOC 0145Z 267DEG 26KT 4779 9856 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Gust

085 
WWUS53 KFGF 100201
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
901 PM CDT FRI JUN 9 2017

NDC027-100211-
/O.EXP.KFGF.TO.W.0016.000000T0000Z-170610T0200Z/
Eddy ND-
901 PM CDT FRI JUN 9 2017

...THE TORNADO WARNING FOR EAST CENTRAL EDDY COUNTY HAS EXPIRED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been allowed to 
expire.

A severe thunderstorm watch remains in effect until midnight CDT for
northeastern North Dakota.

LAT...LON 4783 9853 4778 9852 4773 9853 4775 9864
      4781 9865
TIME...MOT...LOC 0201Z 258DEG 35KT 4782 9835 

$$

!Gust

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:06 PM CDT	Tornado Warning	FGF	Benson	24 min
Jun 9, 7:08 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Pembina, Walsh	52 min
Jun 9, 7:29 PM CDT	Tornado Warning Tornado observed	FGF	Benson, Ramsey	46 min
Jun 9, 7:56 PM CDT	Severe Thunderstorm Warning	FGF	Pembina, Walsh	64 min
Jun 9, 8:15 PM CDT	Tornado Warning	FGF	Nelson, Ramsey, Walsh	45 min
Jun 9, 8:38 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Nelson	38 min
Jun 9, 8:58 PM CDT	Tornado Warning	FGF	Grand Forks, Nelson, Walsh	15 min
Jun 9, 9:00 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs, Steele	60 min
Jun 9, 9:31 PM CDT	Tornado Warning	FGF	Barnes, Griggs, Steele	29 min
Jun 9, 9:45 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Ransom	60 min
Jun 9, 10:03 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Steele, Traill	34 min
Jun 9, 10:45 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	36 min
Jun 9, 11:01 PM CDT	Severe Thunderstorm Warning	FGF	Cass	44 min
Jun 9, 11:15 PM CDT	Severe Thunderstorm Warning	FGF	Cass	31 min
Jun 10, 3:42 AM CDT	Special Weather Statement	FGF	Griggs	48 min
Jun 10, 4:08 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Griggs, Nelson, Steele, Traill	37 min
Jun 10, 4:45 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Steele, Traill	32 min
Jun 10, 5:01 AM CDT	Special Weather Statement	FGF	Benson, Eddy	29 min
Jun 10, 5:40 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Eddy, Grand Forks, Nelson, Ramsey and 2 more	50 min
Jun 10, 6:07 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Grand Forks, Nelson, Pembina, Walsh	38 min
Jun 10, 6:42 AM CDT	Special Weather Statement	FGF	Grand Forks	33 min
Jun 10, 6:49 AM CDT	Special Weather Statement	FGF	Nelson	41 min
Jun 10, 7:26 AM CDT	Special Weather Statement	FGF	Grand Forks	49 min

Nearby

Tornado Warnings in North Dakota, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.