Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 124, NWS Bismarck, ND

August 9, 2021Foster County, Wells County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 9, 2021, 6:02 PM CDT for Foster County, Wells County, North Dakota. It was in force for 43 min. 1 report 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 9, 2021, 6:02 PM CDT (23:02 UTC)
Expired: Aug 9, 2021, 6:45 PM CDT
In force: 43 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Damage threat: Destructive
Hail: 2.75 in
Wind: 60.0 mph

Counties Foster County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 143 km from the middle of the area, began a volume at 23:04 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 9, 6:25 PM CDT	HAIL 1.25	1 Wsw Barlow, ND

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 9, 4:01 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 140 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: 851 J/kg
Mixed-layer CIN: -361 J/kg
Mixed-layer LCL: 1736 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

549 
WUUS53 KBIS 092302
SVRBIS
NDC031-103-092345-
/O.NEW.KBIS.SV.W.0124.210809T2302Z-210809T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
602 PM CDT Mon Aug 9 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Eastern Wells County in south central North Dakota...
  Northwestern Foster County in southeastern North Dakota...

* Until 645 PM CDT.

* At 601 PM CDT, a severe thunderstorm was located over Cathay, or 16
  miles west of Carrington, moving northeast at 40 mph.

  THIS IS A DESTRUCTIVE STORM FOR eastern Wells County and 
northwestern Foster County.

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

  SOURCE...Law enforcement reported baseball sized hail in Fessenden 
           at approximately 540 pm CDT .

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

* This severe thunderstorm will be near...
  Cathay around 605 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4737 9950 4750 9971 4785 9959 4785 9930
      4784 9929 4767 9930 4767 9927 4759 9927
      4759 9897 4745 9895
TIME...MOT...LOC 2301Z 223DEG 35KT 4753 9945 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TELKEN

2 follow-up statements

684 
WWUS53 KBIS 092317
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
617 PM CDT Mon Aug 9 2021

NDC031-103-092345-
/O.CON.KBIS.SV.W.0124.000000T0000Z-210809T2345Z/
Wells ND-Foster ND-
617 PM CDT Mon Aug 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHEASTERN WELLS AND NORTHWESTERN FOSTER COUNTIES...

At 616 PM CDT, a severe thunderstorm was located 7 miles northeast of
Cathay, or 15 miles northwest of Carrington, moving northeast at 40
mph.

THIS IS A DESTRUCTIVE STORM FOR eastern Wells County and 
northwestern Foster County.

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

SOURCE...Law enforcement reported baseball sized hail in Fessenden 
         at approximately 540 pm CDT.

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

This severe thunderstorm will remain over mainly rural areas of
northeastern Wells and northwestern Foster Counties, including the
following locations... Hamberg, Emrick, Bremen, Barlow and Sykeston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4740 9933 4756 9951 4785 9955 4785 9930
      4784 9929 4767 9930 4767 9927 4759 9927
      4759 9897 4745 9895
TIME...MOT...LOC 2316Z 223DEG 35KT 4764 9930 

THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TELKEN

248 
WWUS53 KBIS 092329
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
629 PM CDT Mon Aug 9 2021

NDC031-103-092345-
/O.CON.KBIS.SV.W.0124.000000T0000Z-210809T2345Z/
Wells ND-Foster ND-
629 PM CDT Mon Aug 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EAST CENTRAL WELLS AND NORTHWESTERN FOSTER COUNTIES...

At 629 PM CDT, a severe thunderstorm was located near New Rockford,
or 19 miles north of Carrington, moving northeast at 40 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Law enforcement.

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

Locations impacted include...
Barlow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4746 9926 4759 9935 4767 9930 4767 9927
      4759 9927 4759 9897 4747 9895
TIME...MOT...LOC 2329Z 223DEG 35KT 4773 9917 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TELKEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 10:10 PM CDT	Special Weather Statement	BIS	Golden Valley, Slope	50 min
Aug 9, 3:55 AM CDT	Fire Weather Watch	BIS	Adams, Bowman, Hettinger, Slope	24 hr
Aug 9, 2:15 PM CDT	Special Weather Statement	BIS	Ward	45 min
Aug 9, 2:49 PM CDT	Special Weather Statement	BIS	Renville	41 min
Aug 9, 5:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Wells	52 min
Aug 9, 5:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Kidder, Wells	46 min
Aug 9, 5:53 PM CDT	Special Weather Statement	BIS	Rolette	37 min
Aug 9, 6:10 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, Pierce	35 min
Aug 9, 6:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Foster	47 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.