Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 68, NWS Bismarck, ND

June 10, 2021Grant County, Morton County, Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 10, 2021, 11:21 PM MDT for Grant County, Morton County, Sioux County, North Dakota. It was in force for 54 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
Jun 10, 2021, 11:21 PM MDT (05:21 UTC)
Expired
Jun 11, 2021, 12:15 AM MDT
In force
54 min
Issued by
NWS Bismarck, ND
Area
Storm-based polygon
Hail
0.88 in
Wind
70.0 mph

Counties Grant County, ND, Morton County, ND, Sioux County, ND

The radar

The Bismarck radar (KBIS), 84 km from the middle of the area, began a volume at 05:24 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 10, 11:38 PM MDTTSTM WND GST 66New Salem, NDNEW SALEM NDDOT SITE.

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.

IssuedProductOfficeLasted
Jun 10, 8:54 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.4 hours before the alert went out and 88 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, Bismarck Municip, ND at 00:00Z on 2021-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1785 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2021-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.193958Sfc1 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
1785 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2484 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.8

Open this sounding in Storm Lab

The text

As transmitted.

363 
WUUS53 KBIS 110521
SVRBIS
NDC037-059-085-110615-
/O.NEW.KBIS.SV.W.0068.210611T0521Z-210611T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
1221 AM CDT Fri Jun 11 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Western Sioux County in south central North Dakota...
  Central Morton County in south central North Dakota...
  Grant County in south central North Dakota...

* Until 115 AM CDT/1215 AM MDT/.

* At 1221 AM CDT/1121 PM MDT/, severe thunderstorms were located
  along a line extending from 6 miles south of Glen Ullin to Carson
  to Keldron, moving east at 20 mph.

  HAZARD...70 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  Carson around 1125 PM MDT.

Other locations in the path of these severe thunderstorms include
Flasher, Almont and New Salem.

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 4595 10196 4601 10199 4618 10190 4641 10170
      4677 10197 4691 10178 4688 10132 4644 10092
      4594 10121
TIME...MOT...LOC 0521Z 264DEG 18KT 4673 10183 4641 10154 4595 10180 

HAIL...0.88IN
WIND...70MPH
 
$$

ANGLIN
3 follow-up statements
932 
WWUS53 KBIS 110542
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1242 AM CDT Fri Jun 11 2021

NDC037-059-085-110615-
/O.CON.KBIS.SV.W.0068.000000T0000Z-210611T0615Z/
Sioux ND-Morton ND-Grant ND-
1242 AM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM
CDT/1215 AM MDT/ FOR WESTERN SIOUX...CENTRAL MORTON AND GRANT
COUNTIES...

At 1242 AM CDT/1142 PM MDT/, severe thunderstorms were located along
a line extending from 7 miles southeast of Glen Ullin to 7 miles east
of Carson to near Morristown, moving east at 20 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
  Almont, Flasher, New Salem and Fish Creek Dam.

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 4595 10196 4601 10199 4618 10190 4641 10170
      4673 10156 4691 10178 4688 10132 4644 10092
      4594 10121
TIME...MOT...LOC 0542Z 264DEG 18KT 4674 10170 4642 10141 4596 10167 

HAIL...1.00IN
WIND...70MPH
 
$$

ANGLIN
857 
WWUS53 KBIS 110558
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1258 AM CDT Fri Jun 11 2021

NDC037-059-085-110615-
/O.CON.KBIS.SV.W.0068.000000T0000Z-210611T0615Z/
Sioux ND-Morton ND-Grant ND-
1258 AM CDT Fri Jun 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM
CDT/1215 AM MDT/ FOR WESTERN SIOUX...CENTRAL MORTON AND GRANT
COUNTIES...

At 1258 AM CDT/1158 PM MDT/, severe thunderstorms were located along
a line extending from 4 miles northwest of Almont to near Flasher to
near Watauga, moving east at 20 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Carson, Flasher, Fish Creek Dam, Shields, Judson, Lark, Raleigh,
Leith, Heil, St. Gertrude and Porcupine.

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 4595 10196 4601 10199 4618 10190 4641 10170
      4671 10143 4683 10135 4688 10132 4644 10092
      4594 10121
TIME...MOT...LOC 0558Z 264DEG 18KT 4675 10158 4643 10130 4597 10156 

HAIL...1.00IN
WIND...70MPH
 
$$

ANGLIN
148 
WWUS53 KBIS 110612
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
112 AM CDT Fri Jun 11 2021

NDC037-059-085-110622-
/O.EXP.KBIS.SV.W.0068.000000T0000Z-210611T0615Z/
Sioux ND-Morton ND-Grant ND-
112 AM CDT Fri Jun 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN SIOUX...CENTRAL MORTON
AND GRANT COUNTIES WILL EXPIRE AT 115 AM CDT/1215 AM MDT/...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible behind these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT/200 AM
MDT/ for south central North Dakota.

LAT...LON 4595 10196 4601 10199 4618 10190 4641 10170
      4671 10143 4683 10135 4688 10132 4644 10092
      4594 10121
TIME...MOT...LOC 0612Z 264DEG 18KT 4676 10151 4644 10123 4598 10149 

$$

ANGLIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 6:10 PM MDTSevere Thunderstorm WarningBISMcKenzie, Williams65 min
Jun 10, 6:17 PM MDTSevere Thunderstorm WarningBISGolden Valley, McKenzie58 min
Jun 10, 6:30 PM MDTAreal Flood AdvisoryBISMcKenzie3 hr
Jun 10, 6:47 PM MDTSevere Thunderstorm WarningBISBurke, Divide, Williams43 min
Jun 10, 6:49 PM MDTTornado WarningBISMcKenzie26 min
Jun 10, 7:12 PM MDTTornado Warning Tornado observedConsiderable damage threatBISMcKenzie33 min
Jun 10, 7:23 PM MDTSevere Thunderstorm WarningBISBurke, Divide, Mountrail, Williams52 min
Jun 10, 7:45 PM MDTSevere Thunderstorm WarningBISMcKenzie, Williams45 min
Jun 10, 8:28 PM MDTSevere Thunderstorm WarningBISDivide, McKenzie, Williams62 min
Jun 10, 8:49 PM MDTTornado WarningBISWilliams26 min
Jun 10, 8:53 PM MDTSevere Thunderstorm WarningBISBurke, Mountrail52 min
Jun 10, 9:23 PM MDTSevere Thunderstorm WarningBISMcKenzie, Williams52 min
Jun 10, 9:28 PM MDTFlash Flood WarningBISMcKenzie, Williams4 hr
Jun 10, 9:29 PM MDTSevere Thunderstorm WarningBISBurke, Divide, Mountrail, Williams61 min
Jun 10, 9:35 PM MDTSevere Thunderstorm WarningBISBillings, Golden Valley, McKenzie, Williams40 min
Jun 10, 9:40 PM MDTSpecial Weather StatementBISRenville50 min
Jun 10, 9:57 PM MDTSevere Thunderstorm WarningBISBurke, Renville, Ward39 min
Jun 10, 10:01 PM MDTSevere Thunderstorm WarningBISBillings, Golden Valley, Slope59 min
Jun 10, 10:14 PM MDTSevere Thunderstorm WarningBISDivide, McKenzie, Williams46 min
Jun 10, 10:29 PM MDTSevere Thunderstorm WarningBISBurke, Divide, Mountrail, Williams61 min
Jun 10, 10:45 PM MDTSevere Thunderstorm WarningBISBurke, Divide, McKenzie, Mountrail, Williams45 min
Jun 10, 10:51 PM MDTSevere Thunderstorm WarningBISDunn, Grant, Hettinger, Mercer, Morton, Stark54 min
Jun 10, 11:30 PM MDTSevere Thunderstorm WarningBISBottineau, Burke, McKenzie, McLean, Mountrail, Renville and 2 more60 min
Jun 10, 11:37 PM MDTSevere Thunderstorm WarningBISDunn, Mercer, Morton, Oliver, Stark38 min
Jun 10, 11:55 PM MDTSevere Thunderstorm WarningBISBurleigh, Morton, Oliver35 min
Jun 11, 12:11 AM MDTSevere Thunderstorm WarningBISEmmons, Grant, Morton, Sioux34 min
Jun 11, 12:26 AM MDTSevere Thunderstorm WarningBISBottineau, McHenry, McLean, Renville, Rolette, Sheridan and 1 more64 min
Jun 11, 12:27 AM MDTSevere Thunderstorm WarningBISBurleigh, McLean, Morton, Oliver, Sheridan33 min
Jun 11, 1:00 AM MDTSevere Thunderstorm WarningBISBurleigh, Emmons, Kidder45 min
Jun 11, 1:26 AM MDTSevere Thunderstorm WarningBISBottineau, McHenry, Pierce, Renville, Rolette, Ward64 min
Jun 11, 1:33 AM MDTSevere Thunderstorm WarningBISEmmons, Kidder, Logan, Stutsman57 min
Jun 11, 2:31 AM MDTSpecial Weather StatementBISDickey, Foster, LaMoure, Logan, McIntosh, Stutsman29 min
Jun 11, 2:43 AM MDTSevere Thunderstorm WarningBISDickey, Foster, LaMoure, Logan, McIntosh, Stutsman47 min
Jun 11, 4:19 AM MDTWind AdvisoryBISAdams, Billings, Bottineau, Bowman, Burke, Divide and 19 more16 hr

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.