Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 14, NWS Grand Forks, ND

June 7, 2021Ransom County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 7, 2021, 9:20 PM CDT for Ransom County, North Dakota. It was in force for 23 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 7, 2021, 9:20 PM CDT (02:20 UTC)
Expired: Jun 7, 2021, 9:43 PM CDT
In force: 23 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Ransom County, ND

The radar

The Aberdeen radar (KABR), 123 km from the middle of the area, began a volume at 02:21 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 7, 9:40 PM CDT	TSTM WND DMG	2 Sw Sheldon, ND	SEVERAL LARGE 4 TO 6 INCH DIAMETER TREE BRANCHES BROKEN DOWN AT A FARMSTEAD.
Jun 7, 9:40 PM CDT	TSTM WND DMG	2 Sw Sheldon, ND	SEVERAL LARGE 4 TO 6 INCH DOAMTER TREE BRANCHES BROKEN DOWN AT A FARMSTEAD.

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
Jun 7, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.3 hours before the alert went out and 179 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.

496 
WUUS53 KFGF 080220
SVRFGF
NDC073-080315-
/O.NEW.KFGF.SV.W.0014.210608T0220Z-210608T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
920 PM CDT Mon Jun 7 2021

The National Weather Service in Grand Forks has issued a

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

* Until 1015 PM CDT.

* At 920 PM CDT, a severe thunderstorm was located near Elliott, or
  39 miles south of Valley City, moving northeast at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Elliott around 930 PM CDT.

Other locations in the path of this severe thunderstorm include
Lisbon, Anselm, Venlo and Sheldon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9796 4663 9758 4663 9753 4634 9728
      4631 9728 4628 9791
TIME...MOT...LOC 0220Z 230DEG 15KT 4636 9785 

HAIL...1.00IN
WIND...60MPH
 
$$
jr

1 follow-up statement

851 
WWUS53 KFGF 080243
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
943 PM CDT Mon Jun 7 2021

NDC073-080253-
/O.CAN.KFGF.SV.W.0014.000000T0000Z-210608T0315Z/
Ransom ND-
943 PM CDT Mon Jun 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL RANSOM COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds are still possible with this
thunderstorm.

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

LAT...LON 4637 9796 4663 9758 4663 9753 4634 9728
      4631 9728 4628 9791
TIME...MOT...LOC 0242Z 230DEG 15KT 4642 9774 

$$

jr

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, 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, 4:47 AM CDT	Severe Thunderstorm Warning	FGF	Ransom	58 min
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.