Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 26, NWS Grand Forks, ND

June 8, 2021Barnes County, Ransom County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 8, 2021, 5:44 AM CDT for Barnes County, Ransom County, North Dakota. It was in force for 41 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
Jun 8, 2021, 5:44 AM CDT (10:44 UTC)
Expired
Jun 8, 2021, 6:25 AM CDT
In force
41 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Hail
2.0 in
Wind
50.0 mph

Counties Barnes County, ND, Ransom County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 112 km from the middle of the area, began a volume at 10:43 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

TimeReportWhereRemark
Jun 8, 6:00 AM CDTHAIL 1.5Fort Ransom, NDSECOND ROUND OF LARGE HAIL. REPORT AND PHOTO POSTED VIA SOCIAL MEDIA.
Jun 8, 6:00 AM CDTHAIL 1.5Fort Ransom, NDSOCIAL MEDIA REPORT.

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, 10.7 hours before the alert went out and 193 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2021-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2695 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2021-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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.

792 
WUUS53 KFGF 081044
SVRFGF
NDC003-073-081145-
/O.NEW.KFGF.SV.W.0026.210608T1044Z-210608T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
544 AM CDT Tue Jun 8 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Northwestern Ransom County in southeastern North Dakota...
  Southeastern Barnes County in southeastern North Dakota...

* Until 645 AM CDT.

* At 543 AM CDT, a severe thunderstorm was located over Fort Ransom,
  or 26 miles south of Valley City, and is nearly 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, Fort Ransom State Park, Nome 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.

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.

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

&&

LAT...LON 4663 9803 4663 9815 4670 9768 4663 9768
      4663 9767 4649 9766 4642 9803
TIME...MOT...LOC 1043Z 255DEG 3KT 4655 9797 

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

CJ
2 follow-up statements
277 
WWUS53 KFGF 081112
SVSFGF

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

NDC003-073-081145-
/O.CON.KFGF.SV.W.0026.000000T0000Z-210608T1145Z/
Ransom ND-Barnes ND-
612 AM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 AM CDT
FOR NORTHWESTERN RANSOM AND SOUTHEASTERN BARNES COUNTIES...

At 612 AM CDT, a severe thunderstorm was located over Fort Ransom, or
25 miles south of Valley City, and is nearly stationary.

HAZARD...Half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 4663 9803 4663 9815 4670 9768 4663 9768
      4663 9767 4649 9766 4642 9803
TIME...MOT...LOC 1112Z 255DEG 3KT 4656 9794 

HAIL...1.25IN
WIND...<50MPH
 
$$

CJ
081 
WWUS53 KFGF 081125
SVSFGF

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

NDC003-073-081135-
/O.CAN.KFGF.SV.W.0026.000000T0000Z-210608T1145Z/
Ransom ND-Barnes ND-
625 AM CDT Tue Jun 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RANSOM AND
SOUTHEASTERN BARNES COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

Remember, a Severe Thunderstorm Warning still remains in effect for
northeast LaMoure County.

LAT...LON 4663 9803 4663 9815 4670 9768 4663 9768
      4663 9767 4649 9766 4642 9803
TIME...MOT...LOC 1124Z 255DEG 3KT 4656 9792 

$$

CJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 8:02 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass, Griggs, Steele58 min
Jun 7, 8:12 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass63 min
Jun 7, 9:09 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass66 min
Jun 7, 9:20 PM CDTSevere Thunderstorm WarningFGFRansom23 min
Jun 7, 10:03 PM CDTSevere Thunderstorm WarningFGFCass, Richland57 min
Jun 7, 10:08 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass, Ransom, Richland67 min
Jun 7, 11:08 PM CDTSpecial Weather StatementFGFRichland52 min
Jun 8, 1:39 AM CDTSevere Thunderstorm WarningFGFBarnes66 min
Jun 8, 2:45 AM CDTSevere Thunderstorm WarningFGFBarnes, Ransom60 min
Jun 8, 3:42 AM CDTSevere Thunderstorm WarningFGFBarnes63 min
Jun 8, 4:12 AM CDTAreal Flood AdvisoryFGFBarnes9 hr
Jun 8, 4:47 AM CDTSevere Thunderstorm WarningFGFRansom58 min
Jun 8, 5:00 AM CDTSevere Thunderstorm WarningFGFBarnes60 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2021Every 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.