Alert archive / North Dakota / Tornado Warnings in 2020

Tornado Warning 40, NWS Grand Forks, ND

August 14, 2020Ransom County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Aug 14, 2020, 9:00 AM CDT for Ransom County, North Dakota. It was in force for 30 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: Aug 14, 2020, 9:00 AM CDT (14:00 UTC)
Expired: Aug 14, 2020, 9:30 AM CDT
In force: 30 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Ransom County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 123 km from the middle of the area, began a volume at 14:01 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
Aug 14, 9:03 AM CDT	FUNNEL CLOUD	Elliott, ND	POSSIBLE FUNNEL CLOUD NEAR ELLIOTT. DELAYED REPORT.
Aug 14, 9:08 AM CDT	TSTM WND GST 57	2 W Lisbon, ND	NDAWN SITE MEASURED A 57 MPH WIND GUST.
Aug 14, 9:14 AM CDT	HAIL 1	7 N Lisbon, ND
Aug 14, 9:15 AM CDT	TSTM WND DMG	Lisbon, ND	LARGE 3 TO 5 INCH TREE BRANCHES DOWNED ALONG WITH PEA SIZE HAIL.
Aug 14, 9:35 AM CDT	TSTM WND DMG	Lisbon, ND	3 INCH TREEN BRANCHES DOWNED ALONG WITH PEA SIZE HAIL.

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
Aug 14, 6:41 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 2.0 hours before the alert went out and 182 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: 2284 J/kg
Mixed-layer CIN: -273 J/kg
Mixed-layer LCL: 1067 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

522 
WFUS53 KFGF 141400
TORFGF
NDC073-141430-
/O.NEW.KFGF.TO.W.0040.200814T1400Z-200814T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
900 AM CDT Fri Aug 14 2020

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Central Ransom County in southeastern North Dakota...

* Until 930 AM CDT.
    
* At 900 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Elliott, or 33 miles south of Valley City, moving
  east at 40 mph.

  HAZARD...Tornado and half dollar size hail.

  SOURCE...Radar indicated rotation.

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

* This dangerous storm will be near...
  Lisbon around 910 AM CDT.
  Venlo and Anselm around 925 AM CDT.
  McLeod around 930 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4637 9788 4652 9791 4662 9729 4636 9728
TIME...MOT...LOC 1400Z 265DEG 36KT 4646 9781 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Knutsvig

3 follow-up statements

536 
WWUS53 KFGF 141410
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
910 AM CDT Fri Aug 14 2020

NDC073-141430-
/O.CON.KFGF.TO.W.0040.000000T0000Z-200814T1430Z/
Ransom ND-
910 AM CDT Fri Aug 14 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
NORTHEASTERN RANSOM COUNTY...
    
At 910 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Lisbon, or 35 miles southeast of Valley City, moving
east at 40 mph.

HAZARD...TORNADO and half dollar size hail.

SOURCE...Radar indicated rotation.

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

This dangerous storm will be near...
  Anselm around 920 AM CDT.
  Venlo and Sheldon around 925 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4640 9775 4654 9779 4662 9729 4640 9728
TIME...MOT...LOC 1410Z 265DEG 36KT 4647 9766 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Knutsvig

010 
WWUS53 KFGF 141419
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
919 AM CDT Fri Aug 14 2020

NDC073-141430-
/O.CON.KFGF.TO.W.0040.000000T0000Z-200814T1430Z/
Ransom ND-
919 AM CDT Fri Aug 14 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
NORTHEASTERN RANSOM COUNTY...
    
At 919 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Anselm, or 36 miles southeast of Valley City, moving
east at 40 mph.

HAZARD...TORNADO and half dollar size hail.

SOURCE...Radar indicated rotation.

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

This dangerous storm will be near...
  Venlo around 925 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4643 9762 4655 9764 4659 9729 4649 9728
      4642 9728
TIME...MOT...LOC 1419Z 265DEG 34KT 4650 9754 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

Knutsvig

274 
WWUS53 KFGF 141429
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
929 AM CDT Fri Aug 14 2020

NDC073-141438-
/O.EXP.KFGF.TO.W.0040.000000T0000Z-200814T1430Z/
Ransom ND-
929 AM CDT Fri Aug 14 2020

...THE TORNADO WARNING FOR NORTHEASTERN RANSOM COUNTY WILL EXPIRE AT
930 AM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 200 PM CDT for
southeastern North Dakota.

LAT...LON 4643 9762 4655 9764 4659 9729 4649 9728
      4642 9728
TIME...MOT...LOC 1428Z 265DEG 36KT 4651 9742 

$$

Knutsvig

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 10:33 PM CDT	Severe Thunderstorm Warning	FGF	Richland	57 min
Aug 13, 11:28 PM CDT	Special Weather Statement	FGF	Richland	62 min
Aug 14, 1:08 AM CDT	Areal Flood Advisory	FGF	Richland	2 hr
Aug 14, 4:02 AM CDT	Dense Fog Advisory	FGF	Barnes, Benson, Cavalier, Eddy, Grand Forks, Griggs and 7 more	5 hr
Aug 14, 4:04 AM CDT	Severe Thunderstorm Warning	FGF	Richland	56 min
Aug 14, 5:52 AM CDT	Areal Flood Advisory	FGF	Cass, Richland	6 hr
Aug 14, 5:58 AM CDT	Severe Thunderstorm Warning	FGF	Cass	62 min
Aug 14, 6:37 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	53 min
Aug 14, 6:40 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Traill	65 min
Aug 14, 6:57 AM CDT	Special Weather Statement	FGF	Barnes	48 min
Aug 14, 7:16 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Traill	29 min
Aug 14, 7:30 AM CDT	Special Weather Statement	FGF	Steele	30 min
Aug 14, 8:07 AM CDT	Special Weather Statement	FGF	Steele	23 min
Aug 14, 8:17 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Steele, Traill	23 min
Aug 14, 8:29 AM CDT	Special Weather Statement	FGF	LaMoure	31 min
Aug 14, 8:44 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom, Richland, Sargent	61 min
Aug 14, 9:15 AM CDT	Severe Thunderstorm Warning	FGF	Traill	18 min
Aug 14, 9:32 AM CDT	Areal Flood Advisory	FGF	Barnes, Cass, Steele	5 hr
Aug 14, 9:38 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland, Sargent, Traill	52 min
Aug 14, 1:29 PM CDT	River Flood Warning	FGF	Cass	4 days
Aug 14, 1:35 PM CDT	Areal Flood Advisory	FGF	Cass, Traill	6 hr

Nearby

Tornado Warnings in North Dakota, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.