Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 24, NWS Grand Forks, ND

June 8, 2021Ransom County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 8, 2021, 4:47 AM CDT for Ransom County, North Dakota. It was in force for 58 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: Jun 8, 2021, 4:47 AM CDT (09:47 UTC)
Expired: Jun 8, 2021, 5:45 AM CDT
In force: 58 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

County Ransom County, ND

The radar

The Aberdeen radar (KABR), 118 km from the middle of the area, began a volume at 09:48 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 8, 5:00 AM CDT	HAIL 1	3 W Fort Ransom, ND
Jun 8, 5:30 AM CDT	HAIL 2	Fort Ransom, ND	MEASURED 2.25 INCH DIAMETER HAIL.
Jun 8, 5:30 AM CDT	HAIL 2.25	Fort Ransom, ND

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 9.8 hours before the alert went out and 176 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: 2695 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 2391 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted.

836 
WUUS53 KFGF 080947
SVRFGF
NDC073-081045-
/O.NEW.KFGF.SV.W.0024.210608T0947Z-210608T1045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
447 AM CDT Tue Jun 8 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Western Ransom County in southeastern North Dakota...

* Until 545 AM CDT.

* At 447 AM CDT, a severe thunderstorm was located 7 miles west of
  Fort Ransom, or 26 miles south of Valley City, moving east at 20
  mph.

  HAZARD...Ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect 
           damage to roofs, siding, windows, and vehicles.

* Locations impacted include...
  Lisbon, Enderlin, Fort Ransom, Englevale, Elliott and Little
  Yellowstone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and continuous cloud to ground lightning is occurring 
with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4639 9804 4663 9803 4663 9756 4628 9762
      4628 9772
TIME...MOT...LOC 0947Z 291DEG 18KT 4654 9809 

HAIL...1.50IN
WIND...<50MPH
 
$$

CJ

3 follow-up statements

931 
WWUS53 KFGF 080955
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
455 AM CDT Tue Jun 8 2021

NDC073-081045-
/O.CON.KFGF.SV.W.0024.000000T0000Z-210608T1045Z/
Ransom ND-
455 AM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR WESTERN RANSOM COUNTY...

At 455 AM CDT, a severe thunderstorm was located near Fort Ransom, or
27 miles south of Valley City, moving east at 20 mph.

HAZARD...Two inch hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

Locations impacted include...
Lisbon, Enderlin, Fort Ransom, Englevale, Elliott and Little
Yellowstone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4639 9804 4663 9803 4663 9756 4628 9762
      4628 9772
TIME...MOT...LOC 0955Z 291DEG 18KT 4652 9803 

HAIL...2.00IN
WIND...<50MPH
 
$$

CJ

257 
WWUS53 KFGF 081005 CCA
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
505 AM CDT Tue Jun 8 2021

NDC073-081100-
/O.COR.KFGF.SV.W.0024.000000T0000Z-210608T1045Z/
Ransom ND-
505 AM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR WESTERN RANSOM COUNTY...

At 504 AM CDT, a severe thunderstorm was located over Fort Ransom, or
29 miles south of Valley City, moving east at 20 mph.

This is a very dangerous storm.

HAZARD...Baseball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be severely injured. 
         Expect shattered windows, extensive damage to roofs, 
         siding, and vehicles.

Locations impacted include...
Fort Ransom State Park, Lisbon, Enderlin, Fort Ransom, Englevale, 
Elliott and Little Yellowstone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4639 9804 4663 9803 4663 9756 4628 9762
      4628 9772
TIME...MOT...LOC 0955Z 291DEG 18KT 4652 9803 

HAIL...2.75IN
WIND...<50MPH
 
$$

CJ

184 
WWUS53 KFGF 081034
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
534 AM CDT Tue Jun 8 2021

NDC073-081045-
/O.CON.KFGF.SV.W.0024.000000T0000Z-210608T1045Z/
Ransom ND-
534 AM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR NORTHWESTERN RANSOM COUNTY...

At 533 AM CDT, a severe thunderstorm was located near Elliott, or 34
miles south of Valley City, remaining stationary.

HAZARD...Two inch hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage 
         to roofs, siding, windows, and vehicles.

Locations impacted include...
Fort Ransom and Little Yellowstone. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 4663 9764 4647 9760 4641 9804 4663 9803
TIME...MOT...LOC 1033Z 291DEG 18KT 4645 9777 

HAIL...2.00IN
WIND...<50MPH
 
$$

CJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 8:02 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs, Steele	58 min
Jun 7, 8:12 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	63 min
Jun 7, 9:09 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	66 min
Jun 7, 9:20 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	23 min
Jun 7, 10:03 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Richland	57 min
Jun 7, 10:08 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom, Richland	67 min
Jun 7, 11:08 PM CDT	Special Weather Statement	FGF	Richland	52 min
Jun 8, 1:39 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	66 min
Jun 8, 2:45 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Ransom	60 min
Jun 8, 3:42 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	63 min
Jun 8, 4:12 AM CDT	Areal Flood Advisory	FGF	Barnes	9 hr
Jun 8, 5:00 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	60 min
Jun 8, 5:44 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Ransom	41 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2021 Every severe thunderstorm warning in 2021

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.