Alert archive / North Dakota / Tornado Warnings in 2019

Tornado Warning 6, NWS Grand Forks, ND

July 8, 2019Cavalier County, Ramsey County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 8, 2019, 4:22 PM CDT for Cavalier County, Ramsey County, North Dakota. It was in force for 38 min. 2 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 8, 2019, 4:22 PM CDT (21:22 UTC)
Expired: Jul 8, 2019, 5:00 PM CDT
In force: 38 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Cavalier County, ND, Ramsey County, ND

The radar

The Minot AFB radar (KMBX), 150 km from the middle of the area, began a volume at 21:23 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 8, 4:32 PM CDT	TORNADO 0	5 S Calio, ND	A TORNADO WAS LIKELY WRAPPED IN DOWNBURST WINDS AND HAIL ACROSS A PORTIONS OF SOUTHWEST SEIVERT TOWNSHIP. MORE EXTREME CROP AND TREE DAMAGE INDICATED THE TORNADO TRACKED FOR ABOUT A MILES TO AROUND 4 SSE OF CALIO BY 4 35 PM CDT. PEAK WINDS ESTIMATED TO 85 MPH
Jul 8, 4:35 PM CDT	TSTM WND DMG	5 S Calio, ND	CROPS WERE LAID FLAT OVER ACROSS SOUTHERN SEIVERT TOWNSHIP A MUTIPLE ROUNDS OF LARGE HAIL, STRONG WINDS AND HEAVY RAINS BETWEEN 430 AND 5 PM CDT.

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 8, 1:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.4 hours before the alert went out and 242 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: 1630 J/kg
Mixed-layer CIN: -203 J/kg
Mixed-layer LCL: 1099 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

261 
WFUS53 KFGF 082122
TORFGF
NDC019-071-082200-
/O.NEW.KFGF.TO.W.0006.190708T2122Z-190708T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
422 PM CDT Mon Jul 8 2019

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Southwestern Cavalier County in northeastern North Dakota...
  North central Ramsey County in northeastern North Dakota...

* Until 500 PM CDT.
    
* At 422 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Calio, or 29 miles north of Devils Lake, moving
  east at 15 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

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

* Locations impacted include...
  Hampden and Alsen. 

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4857 9897 4869 9867 4852 9855 4845 9895
      4850 9897
TIME...MOT...LOC 2122Z 262DEG 11KT 4854 9893 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Lee

1 follow-up statement

404 
WWUS53 KFGF 082156
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
456 PM CDT Mon Jul 8 2019

NDC019-071-082206-
/O.EXP.KFGF.TO.W.0006.000000T0000Z-190708T2200Z/
Cavalier ND-Ramsey ND-
456 PM CDT Mon Jul 8 2019

...THE TORNADO WARNING FOR SOUTHWESTERN CAVALIER AND NORTH CENTRAL
RAMSEY COUNTIES WILL EXPIRE AT 500 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

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

LAT...LON 4857 9897 4869 9867 4852 9855 4845 9895
      4850 9897
TIME...MOT...LOC 2156Z 262DEG 11KT 4855 9878 

$$

Lee

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 2:41 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Towner	34 min
Jul 8, 2:53 PM CDT	Flash Flood Watch	FGF	Benson, Cavalier, Eddy, Nelson, Pembina, Ramsey and 2 more	5 hr
Jul 8, 3:09 PM CDT	Special Weather Statement	FGF	Towner	51 min
Jul 8, 3:13 PM CDT	Special Weather Statement	FGF	Cavalier	62 min
Jul 8, 3:22 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Towner	53 min
Jul 8, 4:04 PM CDT	Areal Flood Advisory	FGF	Towner	4 hr
Jul 8, 4:07 PM CDT	Severe Thunderstorm Warning	FGF	Benson	53 min
Jul 8, 4:11 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Towner	49 min
Jul 8, 5:02 PM CDT	Areal Flood Advisory	FGF	Cavalier, Ramsey, Towner	5 hr
Jul 8, 5:11 PM CDT	Special Weather Statement	FGF	Cavalier	49 min
Jul 8, 5:39 PM CDT	Special Weather Statement	FGF	Eddy	66 min
Jul 8, 5:41 PM CDT	Severe Thunderstorm Warning	FGF	Nelson, Ramsey, Walsh	49 min
Jul 8, 5:49 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy	56 min
Jul 8, 6:15 PM CDT	Special Weather Statement	FGF	Griggs, Nelson	60 min
Jul 8, 6:19 PM CDT	Severe Thunderstorm Warning	FGF	Pembina	56 min
Jul 8, 6:29 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Griggs, Nelson, Steele	61 min
Jul 8, 6:52 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs, Steele, Traill	38 min

Nearby

Tornado Warnings in North Dakota, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.