Alert archive / North Dakota / Tornado Warnings in 2018

Tornado Warning 21, NWS Grand Forks, ND

July 8, 2018Ransom County, Richland County, Sargent County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 8, 2018, 6:37 PM CDT for Ransom County, Richland County, Sargent County, North Dakota. It was in force for 38 min. 5 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, 2018, 6:37 PM CDT (23:37 UTC)
Expired: Jul 8, 2018, 7:15 PM CDT
In force: 38 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.0 in

Counties Ransom County, ND, Richland County, ND, Sargent County, ND

The radar

The Aberdeen radar (KABR), 117 km from the middle of the area, began a volume at 23:37 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, 6:45 PM CDT	HAIL 1	2 N Milnor, ND
Jul 8, 6:46 PM CDT	TORNADO 1	Milnor, ND	PARTIALLY RAIN WRAPPED TORNADO TRACKED ACROSS MILNOR TOWNSHIP. TORNADO BROKE NUMEROUS SMALL BRANCHES AND A TREE TRUNK IN THE TOWN OF MILNOR. FURTHER EAST, LARGE TREE LIMBS WERE BROKEN DOWN JUST SOUTH OF COUNTY ROAD 13 AND THE ROOF OF A LARGE FARM SHED WAS DAMA
Jul 8, 6:50 PM CDT	HAIL 1.75	Milnor, ND
Jul 8, 6:53 PM CDT	TSTM WND DMG	2 Se Milnor, ND	WHEAT FIELD WITH SCATTERED DAMAGE.
Jul 8, 6:58 PM CDT	FUNNEL CLOUD	3 E Milnor, ND	WITNESSED AT LEAST 3 FUNNELS.

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, 3:52 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.6 hours before the alert went out and 167 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: 1150 J/kg
Mixed-layer CIN: -332 J/kg
Mixed-layer LCL: 1241 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

831 
WFUS53 KFGF 082337
TORFGF
NDC073-077-081-090015-
/O.NEW.KFGF.TO.W.0021.180708T2337Z-180709T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Eastern ND/Grand Forks ND
637 PM CDT SUN JUL 8 2018

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Southeastern Ransom County in southeastern North Dakota...
  West central Richland County in southeastern North Dakota...
  Northeastern Sargent County in southeastern North Dakota...

* Until 715 PM CDT.
    
* At 636 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Milnor, or 39 miles west of Wahpeton, moving east
  at 25 mph.

  HAZARD...Tornado and hail up to two inches in diameter.

  SOURCE...Radar indicated rotation.

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

* This dangerous storm will be near...
  De Lamere around 650 PM CDT.
  Hamlin around 700 PM CDT.
  Wyndmere around 710 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 4623 9759 4632 9752 4626 9700 4608 9717
TIME...MOT...LOC 2336Z 289DEG 20KT 4626 9744 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

NC/DJR

2 follow-up statements

181 
WWUS53 KFGF 090002
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
702 PM CDT SUN JUL 8 2018

NDC073-090012-
/O.CAN.KFGF.TO.W.0021.000000T0000Z-180709T0015Z/
Ransom ND-
702 PM CDT SUN JUL 8 2018

...THE TORNADO WARNING FOR SOUTHEASTERN RANSOM 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 1100 PM CDT for
southeastern North Dakota.

LAT...LON 4621 9742 4628 9736 4626 9700 4608 9717
TIME...MOT...LOC 0002Z 289DEG 20KT 4621 9724 

$$

NDC077-081-090015-
/O.CON.KFGF.TO.W.0021.000000T0000Z-180709T0015Z/
Richland ND-Sargent ND-
702 PM CDT SUN JUL 8 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR WEST
CENTRAL RICHLAND AND NORTHEASTERN SARGENT COUNTIES...
    
At 702 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Hamlin, or 30 miles west of Wahpeton, moving east at
25 mph.

HAZARD...TORNADO and two inch hail.

SOURCE...Radar indicated rotation.

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

This dangerous storm will be near...
  Wyndmere around 710 PM 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.

&&

LAT...LON 4621 9742 4628 9736 4626 9700 4608 9717
TIME...MOT...LOC 0002Z 289DEG 20KT 4621 9724 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

NC

954 
WWUS53 KFGF 090015
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
715 PM CDT SUN JUL 8 2018

NDC077-081-090024-
/O.EXP.KFGF.TO.W.0021.000000T0000Z-180709T0015Z/
Richland ND-Sargent ND-
715 PM CDT SUN JUL 8 2018

...THE TORNADO WARNING FOR WEST CENTRAL RICHLAND AND NORTHEASTERN
SARGENT COUNTIES WILL EXPIRE AT 715 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.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern North Dakota.

Remember, a Severe Thunderstorm Warning still remains in effect for
Richland and Sargent County until 730PM.

LAT...LON 4621 9742 4628 9736 4626 9700 4608 9717
TIME...MOT...LOC 0014Z 289DEG 20KT 4619 9715 

$$

NC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 3:18 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Grand Forks, Griggs, Nelson, Ramsey and 1 more	57 min
Jul 8, 4:13 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Grand Forks, Griggs, Nelson, Ramsey and 2 more	62 min
Jul 8, 4:19 AM CDT	Special Weather Statement	FGF	Ramsey	56 min
Jul 8, 4:52 AM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Steele	53 min
Jul 8, 5:35 AM CDT	Areal Flood Advisory	FGF	Grand Forks	85 min
Jul 8, 6:27 PM CDT	Severe Thunderstorm Warning	FGF	Ransom, Richland, Sargent	52 min
Jul 8, 6:41 PM CDT	Tornado Warning	FGF	Sargent	49 min
Jul 8, 6:56 PM CDT	Special Weather Statement	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.