Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 81, NWS Bismarck, ND

July 3, 2021Foster County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 3, 2021, 7:44 PM CDT for Foster County, North Dakota. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 3, 2021, 7:44 PM CDT (00:44 UTC)
Expired: Jul 3, 2021, 8:30 PM CDT
In force: 46 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Foster County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 108 km from the middle of the area, began a volume at 00:47 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.7 hours before the alert went out and 165 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: 478 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 3383 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

957 
WUUS53 KBIS 040044
SVRBIS
NDC031-040130-
/O.NEW.KBIS.SV.W.0081.210704T0044Z-210704T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
744 PM CDT Sat Jul 3 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Northeastern Foster County in southeastern North Dakota...

* Until 830 PM CDT.

* At 743 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles west of Grace City to 7 miles south of
  Petersburg, moving east at 30 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.

* Locations impacted include...
  Mchenry and Glenfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. 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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4738 9880 4759 9919 4759 9850 4733 9850
TIME...MOT...LOC 0043Z 284DEG 28KT 4755 9898 4791 9806 

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

ANGLIN

2 follow-up statements

171 
WWUS53 KBIS 040105
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
805 PM CDT Sat Jul 3 2021

NDC031-040130-
/O.CON.KBIS.SV.W.0081.000000T0000Z-210704T0130Z/
Foster ND-
805 PM CDT Sat Jul 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR EASTERN FOSTER COUNTY...

At 804 PM CDT, severe thunderstorms were located along a line
extending from near Grace City to 10 miles west of Larimore, moving
east at 30 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.

Locations impacted include...
Glenfield, Grace City, Mchenry and Juanita. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with these storms.
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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4759 9890 4759 9850 4733 9850 4738 9879
TIME...MOT...LOC 0104Z 284DEG 28KT 4751 9876 4787 9784 

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

ANGLIN

689 
WWUS53 KBIS 040126
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
826 PM CDT Sat Jul 3 2021

NDC031-040135-
/O.EXP.KBIS.SV.W.0081.000000T0000Z-210704T0130Z/
Foster ND-
826 PM CDT Sat Jul 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN FOSTER COUNTY WILL
EXPIRE AT 830 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

LAT...LON 4759 9890 4759 9850 4733 9850 4738 9879
TIME...MOT...LOC 0125Z 284DEG 28KT 4748 9860 4784 9768 

$$

ANGLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 7:31 PM CDT	Special Weather Statement	BIS	Foster	14 min
Jul 3, 7:50 PM CDT	Special Weather Statement	BIS	LaMoure	40 min
Jul 3, 8:02 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan	38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.