Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 119, NWS Bismarck, ND

July 23, 2021Emmons County, Logan County, McIntosh County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 23, 2021, 9:30 PM CDT for Emmons County, Logan County, McIntosh County, North Dakota. It was in force for 60 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: Jul 23, 2021, 9:30 PM CDT (02:30 UTC)
Expired: Jul 23, 2021, 10:30 PM CDT
In force: 60 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Emmons County, ND, Logan County, ND, McIntosh County, ND

The radar

The Bismarck radar (KBIS), 109 km from the middle of the area, began a volume at 02:30 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
Jul 23, 9:50 PM CDT	TSTM WND GST 70	Green Lake, ND	A LARGE COTTONWOOD TREE BROKE OVER ONTO A ROAD. TIME ESTIMATED FROM RADAR.
Jul 23, 10:15 PM CDT	TSTM WND GST 60	10 E Ashley, 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
Jul 23, 7:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.5 hours before the alert went out and 105 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: 568 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 2719 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

589 
WUUS53 KBIS 240230
SVRBIS
NDC029-047-051-240330-
/O.NEW.KBIS.SV.W.0119.210724T0230Z-210724T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
930 PM CDT Fri Jul 23 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Logan County in southeastern North Dakota...
  McIntosh County in southeastern North Dakota...
  Eastern Emmons County in south central North Dakota...

* Until 1030 PM CDT.

* At 930 PM CDT, severe thunderstorms were located along a line
  extending from 11 miles southwest of Napoleon to near Hague, moving
  east at 45 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...
  Venturia, Lehr and Ashley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4599 10013 4644 10017 4664 9976 4663 9904
      4629 9904 4628 9900 4594 9901 4594 9986
TIME...MOT...LOC 0230Z 265DEG 37KT 4636 9991 4603 9993 

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

Telken

2 follow-up statements

906 
WWUS53 KBIS 240306
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1006 PM CDT Fri Jul 23 2021

NDC029-240315-
/O.CAN.KBIS.SV.W.0119.000000T0000Z-210724T0330Z/
Emmons ND-
1006 PM CDT Fri Jul 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN EMMONS COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
south central and southeastern North Dakota.

LAT...LON 4594 9988 4628 9988 4629 9992 4656 9992
      4664 9977 4663 9904 4629 9904 4628 9900
      4594 9901
TIME...MOT...LOC 0305Z 265DEG 37KT 4639 9941 4606 9943 

$$

NDC047-051-240330-
/O.CON.KBIS.SV.W.0119.000000T0000Z-210724T0330Z/
Logan ND-McIntosh ND-
1006 PM CDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR LOGAN AND MCINTOSH COUNTIES...

At 1005 PM CDT, severe thunderstorms were located along a line
extending from 8 miles north of Lehr to near Ashley, moving east at
45 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Napoleon, Ashley, Wishek, Gackle, Zeeland, Lehr, Venturia, Fredonia,
Burnstad, Danzig, Green Lake and Beaver Lake State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4594 9988 4628 9988 4629 9992 4656 9992
      4664 9977 4663 9904 4629 9904 4628 9900
      4594 9901
TIME...MOT...LOC 0305Z 265DEG 37KT 4639 9941 4606 9943 

HAIL...0.88IN
WIND...60MPH
 
$$

Telken

222 
WWUS53 KBIS 240326
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1026 PM CDT Fri Jul 23 2021

NDC047-051-240335-
/O.EXP.KBIS.SV.W.0119.000000T0000Z-210724T0330Z/
Logan ND-McIntosh ND-
1026 PM CDT Fri Jul 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR LOGAN AND MCINTOSH COUNTIES
WILL EXPIRE AT 1030 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
south central and southeastern North Dakota.

LAT...LON 4594 9988 4628 9988 4629 9992 4656 9992
      4664 9977 4663 9904 4629 9904 4628 9900
      4594 9901
TIME...MOT...LOC 0325Z 265DEG 37KT 4641 9913 4608 9915 

$$

Telken

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 7:26 PM CDT	Special Weather Statement	BIS	Grant	49 min
Jul 23, 7:31 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	32 min
Jul 23, 7:40 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton, Sioux	35 min
Jul 23, 8:20 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Sioux	55 min
Jul 23, 8:33 PM CDT	Special Weather Statement	BIS	Emmons	42 min
Jul 23, 9:10 PM CDT	Special Weather Statement	BIS	Emmons, Logan, McIntosh	65 min
Jul 23, 10:09 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	66 min
Jul 23, 11:22 PM CDT	Special Weather Statement	BIS	Dickey	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.