Alert archive / North Dakota / Tornado Warnings in 2018

Tornado Warning 11, NWS Grand Forks, ND

June 14, 2018Cavalier County, Towner County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 14, 2018, 9:17 PM CDT for Cavalier County, Towner County, North Dakota. It was in force for 43 min. 6 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 14, 2018, 9:17 PM CDT (02:17 UTC)
Expired: Jun 14, 2018, 10:00 PM CDT
In force: 43 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Observed
Hail: 1.75 in

Counties Cavalier County, ND, Towner County, ND

The radar

The Minot AFB radar (KMBX), 128 km from the middle of the area, began a volume at 02:20 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 14, 9:18 PM CDT	TORNADO 1	5 Wsw Amourdale, ND	A PARTIALLY RAIN WRAPPED TORNADO LIKELY TRACKED INTERMITTENTLY TO THE SOUTHEAST FOR ABOUT 3 MILES, ENDING ABOUT 4 SSW OF AMOURDALE BY 924 PM CDT. AT LEAST ONE POWER POLE WAS CRACKED AND POWER LINES WERE TORN DOWN IN CENTRAL MOUNTAIN VIEW TOWNSHIP. PEAK WINDS E
Jun 14, 9:35 PM CDT	TSTM WND DMG	1 W Rocklake, ND	2 HOPPER BOTTOMED GRAIN BINS AND A GRAIN DRYER WERE BLOWN OVER AT A SITE JUST WEST OF THE LAKE. A 5K BUSHEL STEEL GRAIN BIN WAS DENTED IN NEAT THE ROOF LINE. TIME ESTIMATED BASED ON RADAR.
Jun 14, 9:35 PM CDT	TSTM WND DMG	1 W Rocklake, ND	STEEL GRAIN BINS BLOWN DOWN ALONG WEST SIDE OF LAKE. TIME ESTIMATED BASED ON RADAR.
Jun 14, 9:37 PM CDT	TSTM WND DMG	Rocklake, ND	REPORT OF TREES BLOWN DOWN AROUND TOWN. TIME ESTIMATED BASED ON RADAR.
Jun 14, 9:37 PM CDT	TSTM WND DMG	Rocklake, ND	REPORT OF TREES BLOWN DOWN AROUND TOWN. TIME ESTIMATED BASED ON RADAR. A STORM SURVEY ALSO FOUND THAT SOME STEEL SIDING HAD BEEN TORN OFF THE SIDES OF A GRAIN CLEANING FACILITY.
Jun 14, 9:45 PM CDT	TORNADO 1	4 Ssw Rocklake, ND	A PARTIALLY RAIN WRAPPED TORNADO LIKELY TRACKED EASTWARD FOR ROUGHLY 4 MILES ACROSS SOUTHERN VIRGINIA TOWNSHIP, ENDING ABOUT 6 NNW OF EGELAND BY 956 PM CDT. THE TORNADO PICKED AND TOSSED A HOPPER BOTTOM GRAIN BIN ABOUT 40 YARDS TO THE SOUTHWEST, BLEW DOWN CATT

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 14, 8:32 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.3 hours before the alert went out and 251 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: 2531 J/kg
Mixed-layer CIN: -283 J/kg
Mixed-layer LCL: 1747 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

371 
WFUS53 KFGF 150217
TORFGF
NDC019-095-150300-
/O.NEW.KFGF.TO.W.0011.180615T0217Z-180615T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Eastern ND/Grand Forks ND
917 PM CDT THU JUN 14 2018

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Central Towner County in northeastern North Dakota...
  Southwestern Cavalier County in northeastern North Dakota...

* Until 1000 PM CDT.

* At 916 PM CDT, a confirmed tornado was located near Amourdale, or
  46 miles east of Bottineau, moving east at 30 mph.

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

  SOURCE...Law enforcement confirmed tornado. Tornado confirmed just 
           east of Rolla by local law enforcement at 913 PM CDT.

  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.

* The tornado will be near...
  Rocklake around 935 PM CDT.
  Munich, Clyde and Calio around 1000 PM CDT.

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 4892 9952 4884 9876 4858 9886 4873 9953
TIME...MOT...LOC 0216Z 283DEG 26KT 4881 9942 

TORNADO...OBSERVED
HAIL...1.75IN

$$

BP

3 follow-up statements

063 
WWUS53 KFGF 150236
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
936 PM CDT THU JUN 14 2018

NDC019-095-150300-
/O.CON.KFGF.TO.W.0011.000000T0000Z-180615T0300Z/
Towner ND-Cavalier ND-
936 PM CDT THU JUN 14 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR CENTRAL
TOWNER AND SOUTHWESTERN CAVALIER COUNTIES...
    
At 936 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Rocklake, or 38 miles west of Langdon, moving east
at 30 mph.

HAZARD...Tornado and ping pong 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...
  Munich, Clyde and Calio around 1000 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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 4890 9933 4884 9876 4858 9886 4871 9945
TIME...MOT...LOC 0236Z 287DEG 26KT 4876 9922 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

BP

066 
WWUS53 KFGF 150253
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
953 PM CDT THU JUN 14 2018

NDC019-095-150300-
/O.CON.KFGF.TO.W.0011.000000T0000Z-180615T0300Z/
Towner ND-Cavalier ND-
953 PM CDT THU JUN 14 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR EAST
CENTRAL TOWNER AND SOUTHWESTERN CAVALIER COUNTIES...
    
At 953 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Clyde, or 30 miles west of Langdon, moving east at
30 mph.

HAZARD...Tornado and ping pong 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...
  Munich, Clyde and Calio around 1000 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

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 4885 9916 4884 9876 4858 9886 4868 9930
TIME...MOT...LOC 0253Z 283DEG 26KT 4873 9903 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

BP

855 
WWUS53 KFGF 150258
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
958 PM CDT THU JUN 14 2018

NDC019-095-150308-
/O.EXP.KFGF.TO.W.0011.000000T0000Z-180615T0300Z/
Towner ND-Cavalier ND-
958 PM CDT THU JUN 14 2018

...THE TORNADO WARNING FOR EAST CENTRAL TOWNER AND SOUTHWESTERN
CAVALIER COUNTIES WILL EXPIRE AT 1000 PM CDT...
    
The Tornado Warning that was previously in effect has been reissued 
for eastern Towner and western Towner counties and is in effect 
until 1045 PM CDT. Please refer to that bulletin for the latest 
severe weather information.

A Tornado Watch remains in effect until 200 AM CDT for northeastern
North Dakota.

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

LAT...LON 4885 9916 4884 9876 4858 9886 4868 9930
TIME...MOT...LOC 0258Z 283DEG 26KT 4872 9899 

$$

BP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 8:54 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Towner	66 min
Jun 14, 9:51 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey, Towner	39 min
Jun 14, 9:56 PM CDT	Tornado Warning	FGF	Cavalier, Ramsey, Towner	49 min
Jun 14, 10:29 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Towner	46 min
Jun 14, 10:42 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey	33 min
Jun 14, 11:06 PM CDT	Special Weather Statement	FGF	Pembina	24 min
Jun 14, 11:11 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey	49 min
Jun 14, 11:15 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Pembina, Ramsey, Walsh	45 min
Jun 14, 11:34 PM CDT	Special Weather Statement	FGF	Pembina	56 min
Jun 14, 11:57 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Nelson, Ramsey, Walsh	48 min
Jun 14, 11:59 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Pembina, Ramsey, Walsh	46 min
Jun 15, 12:17 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom	28 min
Jun 15, 12:35 AM CDT	Special Weather Statement	FGF	Pembina	40 min
Jun 15, 12:40 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Pembina, Ramsey, Walsh	42 min
Jun 15, 12:44 AM CDT	Special Weather Statement	FGF	Cass	31 min
Jun 15, 1:01 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland, Sargent	44 min
Jun 15, 1:17 AM CDT	Special Weather Statement	FGF	Cass	43 min
Jun 15, 1:21 AM CDT	Special Weather Statement	FGF	Walsh	54 min
Jun 15, 1:55 AM CDT	Severe Thunderstorm Warning	FGF	Cass	34 min

Nearby

Tornado Warnings in North Dakota, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.