Alert archive / North Dakota / Tornado Warnings in 2017

Tornado Warning 6, NWS Grand Forks, ND

June 7, 2017Grand Forks County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 7, 2017, 1:11 PM CDT for Grand Forks County, North Dakota. It was in force for 49 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 7, 2017, 1:11 PM CDT (18:11 UTC)
Expired
Jun 7, 2017, 2:00 PM CDT
In force
49 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 32 km from the middle of the area, began a volume at 18:15 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

TimeReportWhereRemark
Jun 7, 1:18 PM CDTFUNNEL CLOUD7 S Emerado, ND
Jun 7, 1:18 PM CDTTORNADO 07 S Emerado, NDA DEPUTY REPORTED A TOUCHDOWN AROUND 2 MILES SOUTH OF THE INTERSECTION OF GF CR3 AND CR6. THE TORNADO APPEARED TO TRACKED EASTWARD FOR ABOUT A MILE OVER A 2 TO 3 MINUTE SPAN AND ENDED BY 121 PM CDT. THIS TORNADO WAS VIEWED AND REPORTED BY GFAFB OBSERVERS AND W
Jun 7, 1:19 PM CDTFUNNEL CLOUD4 Ne Hatton, NDFUNNEL CLOUD SEEN REFORMING AND MOVING TOWARDS HOLMES. FUNNEL WAS VIEWED AND REPORTED FROM A POINT ABOUT 5 MILES EAST OF NORTHWOOD.
Jun 7, 1:23 PM CDTTORNADO 03 Sw Holmes, NDTHIS TORNADO TRACKED TO THE NORTHEAST FOR ABOUT 2 MILES TO AROUND 1 SSW OF HOLMES BY 130 PM CDT. NO SIGNIFICANT DAMAGE WAS DETECTED. PEAK WINDS ESTIMATED TO 75 MPH. MAXIMUM WIDTH ESTIMATED TO 75 YARDS.

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, 6.2 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2017-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2017-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

173 
WFUS53 KFGF 071811
TORFGF
NDC035-071900-
/O.NEW.KFGF.TO.W.0006.170607T1811Z-170607T1900Z/

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

The National Weather Service in Grand Forks has issued a

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

* Until 200 PM CDT.

* At 110 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Holmes, or 18 miles southwest of Grand Forks,
  moving northeast at 20 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

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

* This dangerous storm will be near...
  Holmes around 115 PM CDT. 
  Thompson around 145 PM CDT. 
  Merrifield around 150 PM CDT. 

This includes Interstate 29 between mile markers 130 and 132.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4790 9715 4777 9705 4767 9740 4780 9749
TIME...MOT...LOC 1810Z 246DEG 19KT 4773 9736 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Voelker
1 follow-up statement
947 
WWUS53 KFGF 071825
SVSFGF

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

NDC035-071900-
/O.CON.KFGF.TO.W.0006.000000T0000Z-170607T1900Z/
Grand Forks ND-
125 PM CDT WED JUN 7 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
SOUTHEASTERN GRAND FORKS COUNTY...
    
At 124 PM CDT, a confirmed tornado was located near Holmes, or 18 
miles southwest of Grand Forks, moving east at 15 mph. Debris had 
been reported with this tornado 5 miles east of Northwood. 

HAZARD...TORNADO. 

SOURCE...Weather spotters confirmed tornado. 

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

This tornado will be near...
  Holmes around 130 PM CDT. 
  Thompson and Merrifield around 200 PM CDT. 

This includes Interstate 29 between mile markers 130 and 132.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4790 9715 4777 9705 4769 9738 4782 9743
TIME...MOT...LOC 1824Z 257DEG 11KT 4772 9733 

TORNADO...OBSERVED
HAIL...<.75IN

$$

Voelker

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 11:48 AM CDTSpecial Weather StatementFGFWalsh57 min
Jun 7, 12:29 PM CDTSpecial Weather StatementFGFWalsh61 min
Jun 7, 1:02 PM CDTTornado Warning Tornado observedFGFGrand Forks43 min
Jun 7, 1:05 PM CDTTornado Warning Tornado observedFGFGrand Forks, Traill25 min
Jun 7, 1:29 PM CDTTornado WarningFGFGrand Forks, Traill46 min
Jun 7, 1:44 PM CDTTornado WarningFGFGrand Forks30 min
Jun 7, 1:56 PM CDTTornado WarningFGFGrand Forks35 min
Jun 7, 1:58 PM CDTTornado WarningFGFGrand Forks, Walsh47 min
Jun 7, 2:13 PM CDTTornado WarningFGFGrand Forks, Traill47 min
Jun 7, 2:39 PM CDTSevere Thunderstorm WarningFGFWalsh20 min

Nearby

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