Alert archive / North Dakota / Tornado Warnings in 2017

Tornado Warning 18, NWS Grand Forks, ND

June 9, 2017Barnes County, Griggs County, Steele County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 9, 2017, 9:31 PM CDT for Barnes County, Griggs County, Steele County, North Dakota. It was in force for 29 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: Jun 9, 2017, 9:31 PM CDT (02:31 UTC)
Expired: Jun 9, 2017, 10:00 PM CDT
In force: 29 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Barnes County, ND, Griggs County, ND, Steele County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 70 km from the middle of the area, began a volume at 02:30 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
Jun 9, 9:32 PM CDT	TORNADO 0	2 Sw Walum, ND	REPORT OF TOUCHDOWN SOUTHWEST OF WALUM VIEWED BY SPOTTERS NORTHEAST OF WIMBLEDON AND ALSO BY SPOTTERS NORTH OF DAZEY. A PERSISTENT WALLCLOUD STRUCTURE WITH FUNNEL-LIKE APPENDAGE WAS VIEWED FOR SEVERAL MINUTES AS IT PASSED ALONG THE BARNES AND GRIGGS COUNTY LIN
Jun 9, 9:32 PM CDT	TORNADO	2 W Walum, ND	REPORT OF TOUCHDOWN WEST OF WALUM VIEWED BY SPOTTERS NORTHEAST OF WIMBLEDON AND ALSO SPOTTERS NORTH OF DAZEY.
Jun 9, 9:35 PM CDT	HAIL 1.75	Hannaford, ND
Jun 9, 9:40 PM CDT	HAIL 1	2 Ese Hannaford, 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, 2.5 hours before the alert went out and 199 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.

205 
WFUS53 KFGF 100231
TORFGF
NDC003-039-091-100315-
/O.NEW.KFGF.TO.W.0018.170610T0231Z-170610T0315Z/

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

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Southeastern Griggs County in southeastern North Dakota...
  North central Barnes County in southeastern North Dakota...
  Southwestern Steele County in southeastern North Dakota...

* Until 1015 PM CDT.

* At 931 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Hannaford, or 29 miles northwest of Valley City,
  moving east at 55 mph.

  HAZARD...Tornado and golf ball size 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 dangerous storm will be near...
  Luverne and Sibley around 945 PM CDT. 

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 4726 9835 4739 9837 4741 9793 4716 9792
TIME...MOT...LOC 0231Z 265DEG 48KT 4731 9825 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Gust

2 follow-up statements

567 
WWUS53 KFGF 100239
SVSFGF

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

NDC003-039-091-100315-
/O.CON.KFGF.TO.W.0018.000000T0000Z-170610T0315Z/
Griggs ND-Barnes ND-Steele ND-
939 PM CDT FRI JUN 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
SOUTHEASTERN GRIGGS...NORTH CENTRAL BARNES AND SOUTHWESTERN STEELE
COUNTIES...
    
At 932 PM CDT, a confirmed tornado was located west of Walum, or 27 
miles north of Valley City, moving east at 30 mph.

HAZARD...Damaging tornado and golf ball size hail. 

SOURCE...Weather spotters confirmed tornado. 

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 tornado will be near...
  Hannaford and Walum around 940 PM CDT. 
  Luverne and Sibley around 1005 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4726 9835 4738 9835 4741 9793 4716 9792
TIME...MOT...LOC 0238Z 281DEG 26KT 4729 9822 

TORNADO...OBSERVED
HAIL...1.75IN

$$

Gust

473 
WWUS53 KFGF 100300
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
1000 PM CDT FRI JUN 9 2017

NDC003-039-091-100310-
/O.CAN.KFGF.TO.W.0018.000000T0000Z-170610T0315Z/
Griggs ND-Barnes ND-Steele ND-
1000 PM CDT FRI JUN 9 2017

...THE TORNADO WARNING FOR SOUTHEASTERN GRIGGS...NORTH CENTRAL BARNES
AND SOUTHWESTERN STEELE COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

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

LAT...LON 4726 9835 4738 9835 4741 9793 4716 9792
TIME...MOT...LOC 0258Z 265DEG 48KT 4732 9778 

$$

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, 8:16 PM CDT	Tornado Warning	FGF	Eddy, Nelson	44 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, 9:45 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.