Alert archive / North Dakota / Tornado Warnings in 2017

Tornado Warning 8, NWS Grand Forks, ND

June 7, 2017Grand Forks County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 7, 2017, 1:44 PM CDT for Grand Forks County, North Dakota. It was in force for 30 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: Jun 7, 2017, 1:44 PM CDT (18:44 UTC)
Expired: Jun 7, 2017, 2:14 PM CDT
In force: 30 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 55 km from the middle of the area, began a volume at 18:45 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 7, 1:50 PM CDT	TSTM WND DMG	8 Nw Manvel, ND	NUMEROUS POPLAR AND ASH TREES BROKEN DOWN IN SHELTER BELTS ACROSS SOUTHERN LEVANT TOWNSHIP.

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, 6.7 hours before the alert went out and 285 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1440 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

887 
WFUS53 KFGF 071844
TORFGF
NDC035-071930-
/O.NEW.KFGF.TO.W.0008.170607T1844Z-170607T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Eastern ND/Grand Forks ND
144 PM CDT WED JUN 7 2017

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  North central Grand Forks County in northeastern North Dakota...

* Until 230 PM CDT.

* At 143 PM CDT, a two severe thunderstorms capable of producing 
  tornadoes were located over Grand Forks AFB, or 16 miles west of 
  Grand Forks, moving northeast at 30 mph.

  HAZARD...Tornado and half dollar size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

* This dangerous storm will be near...
  Grand Forks AFB around 145 PM CDT. 
  Mekinock and Gilby around 150 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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Grand Forks.

&&

LAT...LON 4794 9746 4808 9755 4818 9732 4796 9715
TIME...MOT...LOC 1843Z 236DEG 27KT 4798 9742 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Gust

2 follow-up statements

829 
WWUS53 KFGF 071905
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
205 PM CDT WED JUN 7 2017

NDC035-071930-
/O.CON.KFGF.TO.W.0008.000000T0000Z-170607T1930Z/
Grand Forks ND-
205 PM CDT WED JUN 7 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR NORTH
CENTRAL GRAND FORKS COUNTY...
    
At 204 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Mekinock, or 13 miles northwest of Grand Forks,
moving northeast at 20 mph.

HAZARD...TORNADO and half dollar size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Expect damage to mobile homes, roofs, and vehicles. 

This tornadic thunderstorm will remain over mainly rural areas of
north central Grand Forks 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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4795 9737 4809 9752 4818 9732 4796 9715
TIME...MOT...LOC 1904Z 231DEG 17KT 4805 9728 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

gust

211 
WWUS53 KFGF 071914
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
214 PM CDT WED JUN 7 2017

NDC035-071924-
/O.CAN.KFGF.TO.W.0008.000000T0000Z-170607T1930Z/
Grand Forks ND-
214 PM CDT WED JUN 7 2017

...THE TORNADO WARNING FOR NORTH CENTRAL GRAND FORKS COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A tornado watch remains in effect until 600 PM CDT for northeastern
North Dakota.

LAT...LON 4795 9737 4809 9752 4818 9732 4796 9715
TIME...MOT...LOC 1913Z 236DEG 27KT 4809 9718 

$$

Gust

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 11:48 AM CDT	Special Weather Statement	FGF	Walsh	57 min
Jun 7, 12:29 PM CDT	Special Weather Statement	FGF	Walsh	61 min
Jun 7, 1:02 PM CDT	Tornado Warning Tornado observed	FGF	Grand Forks	43 min
Jun 7, 1:05 PM CDT	Tornado Warning Tornado observed	FGF	Grand Forks, Traill	25 min
Jun 7, 1:11 PM CDT	Tornado Warning	FGF	Grand Forks	49 min
Jun 7, 1:29 PM CDT	Tornado Warning	FGF	Grand Forks, Traill	46 min
Jun 7, 1:56 PM CDT	Tornado Warning	FGF	Grand Forks	35 min
Jun 7, 1:58 PM CDT	Tornado Warning	FGF	Grand Forks, Walsh	47 min
Jun 7, 2:13 PM CDT	Tornado Warning	FGF	Grand Forks, Traill	47 min
Jun 7, 2:39 PM CDT	Severe Thunderstorm Warning	FGF	Walsh	20 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.