Alert archive / North Dakota / Tornado Warnings in 2018

Tornado Warning 19, NWS Grand Forks, ND

July 4, 20184 counties in North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 4, 2018, 2:26 AM CDT for 4 counties in North Dakota. It was in force for 49 min. 3 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: Jul 4, 2018, 2:26 AM CDT (07:26 UTC)
Expired: Jul 4, 2018, 3:15 AM CDT
In force: 49 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Benson County, ND, Eddy County, ND, Nelson County, ND, Ramsey County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 110 km from the middle of the area, began a volume at 07:30 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
Jul 4, 2:29 AM CDT	TORNADO 2	2 Ssw Warwick, ND	A TORNADO LIKELY INITIATED IN A BOWING SECTION OF A SQUALL LINE AS IN MOVED NORTHEASTWARD THROUGH CENTRAL EDDY TOWNSHIP INTO WARWICK TOWNSHIP. THE TORNADO TRACKED FOR ABOUT 3 MILES TO THE NORTH NORTHEAST, PASSING JUST EAST OF WARWICK TO AROUND 1 NE OF WARWICK
Jul 4, 2:31 AM CDT	TSTM WND DMG	S Warwick, ND	REPORTS WITHIN OR NEAR WARWICK OF A TREE ON A HOUSE, ROOF OFF TRAILER, TREES DOWN IN THE CITY PARK, AND POWER POLES DOWN ALONG HIGHWAY 20 SOUTH OF WARWICK. TIME ESTIMATED BY RADAR.
Jul 4, 2:48 AM CDT	TSTM WND DMG	1 Ese Doyon, ND	SHED TUMBLED, FENCING AND ROOFING TORN UP, HOOP BUILDING DEMOLISHED AT DEVILS LAKE SPEEDWAY. TIME ESTIMATED BASED ON RADAR.

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
Jul 4, 1:34 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 7.4 hours before the alert went out and 203 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: 1282 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1250 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

731 
WFUS53 KFGF 040726
TORFGF
NDC005-027-063-071-040815-
/O.NEW.KFGF.TO.W.0019.180704T0726Z-180704T0815Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Eastern ND/Grand Forks ND
226 AM CDT WED JUL 4 2018

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Southeastern Benson County in northeastern North Dakota...
  Northwestern Nelson County in northeastern North Dakota...
  Southeastern Ramsey County in northeastern North Dakota...
  Northeastern Eddy County in northeastern North Dakota...

* Until 315 AM CDT.
    
* At 225 AM CDT, a severe thunderstorm capable of producing a 
  tornado was located near Warwick, or 18 miles south of Devils 
  Lake, moving northeast at 50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

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

* This dangerous storm will be near...
  Crary and Doyon around 245 AM CDT.
  Bartlett around 250 AM CDT.
  Southam around 255 AM 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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4778 9869 4782 9892 4827 9864 4814 9830
TIME...MOT...LOC 0725Z 207DEG 44KT 4785 9877 

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

$$

JK

3 follow-up statements

510 
WWUS53 KFGF 040739
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
239 AM CDT WED JUL 4 2018

NDC027-040749-
/O.CAN.KFGF.TO.W.0019.000000T0000Z-180704T0815Z/
Eddy ND-
239 AM CDT WED JUL 4 2018

...THE TORNADO WARNING FOR NORTHEASTERN EDDY 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 900 AM CDT for
northeastern North Dakota.

LAT...LON 4787 9859 4795 9883 4827 9864 4814 9830
TIME...MOT...LOC 0739Z 207DEG 44KT 4800 9865 

$$

NDC005-063-071-040815-
/O.CON.KFGF.TO.W.0019.000000T0000Z-180704T0815Z/
Benson ND-Nelson ND-Ramsey ND-
239 AM CDT WED JUL 4 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 AM CDT FOR
SOUTHEASTERN BENSON...NORTHWESTERN NELSON AND SOUTHEASTERN RAMSEY
COUNTIES...
    
At 239 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Crary, or 12 miles southeast of Devils Lake, moving
northeast at 50 mph.

HAZARD...TORNADO.

SOURCE...Radar indicated rotation.

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

This dangerous storm will be near...
  Crary and Doyon around 245 AM CDT.
  Bartlett around 250 AM CDT.
  Southam around 255 AM CDT.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4787 9859 4795 9883 4827 9864 4814 9830
TIME...MOT...LOC 0739Z 207DEG 44KT 4800 9865 

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

$$

JK

766 
WWUS53 KFGF 040751
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
251 AM CDT WED JUL 4 2018

NDC005-040800-
/O.CAN.KFGF.TO.W.0019.000000T0000Z-180704T0815Z/
Benson ND-
251 AM CDT WED JUL 4 2018

...THE TORNADO WARNING FOR SOUTHEASTERN BENSON 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 900 AM CDT for
northeastern North Dakota.

LAT...LON 4804 9841 4810 9871 4827 9864 4814 9830
TIME...MOT...LOC 0750Z 210DEG 48KT 4814 9851 

$$

NDC063-071-040815-
/O.CON.KFGF.TO.W.0019.000000T0000Z-180704T0815Z/
Nelson ND-Ramsey ND-
251 AM CDT WED JUL 4 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 AM CDT FOR
NORTHWESTERN NELSON AND SOUTHEASTERN RAMSEY COUNTIES...
    
At 250 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Southam, or 16 miles east of Devils Lake, moving
northeast at 55 mph.

HAZARD...TORNADO.

SOURCE...Radar indicated rotation.

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

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Nelson and southeastern Ramsey Counties.

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!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4804 9841 4810 9871 4827 9864 4814 9830
TIME...MOT...LOC 0750Z 210DEG 48KT 4814 9851 

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

$$

JK

886 
WWUS53 KFGF 040813
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
313 AM CDT WED JUL 4 2018

NDC063-071-040820-
/O.EXP.KFGF.TO.W.0019.000000T0000Z-180704T0815Z/
Nelson ND-Ramsey ND-
313 AM CDT WED JUL 4 2018

...THE TORNADO WARNING FOR NORTHWESTERN NELSON AND SOUTHEASTERN
RAMSEY COUNTIES WILL EXPIRE AT 315 AM CDT...
    
The Tornado Warning that was previously in effect has been reissued 
for Northeast Ramsey County and western Walsh and southeast Cavalier 
is in effect until 345 AM. Please refer to that bulletin for the 
latest severe weather information.

A Severe Thunderstorm Watch remains in effect until 900 AM CDT for
northeastern North Dakota.

LAT...LON 4804 9841 4810 9871 4827 9864 4814 9830
TIME...MOT...LOC 0810Z 207DEG 44KT 4835 9835 

$$

JK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 2:00 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Griggs, Nelson, Ramsey	45 min
Jul 4, 2:33 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Eddy, Grand Forks, Griggs, Nelson and 2 more	57 min
Jul 4, 2:37 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Grand Forks, Nelson, Ramsey, Towner and 1 more	53 min
Jul 4, 3:09 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland, Sargent	66 min
Jul 4, 3:09 AM CDT	Tornado Warning	FGF	Cavalier, Pembina, Ramsey, Walsh	36 min
Jul 4, 3:24 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Grand Forks, Steele, Traill	66 min
Jul 4, 3:27 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Grand Forks, Pembina, Ramsey, Walsh	63 min
Jul 4, 4:16 AM CDT	Severe Thunderstorm Warning	FGF	Pembina	59 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.