Alert archive / North Dakota / Tornado Warnings in 2015

Tornado Warning 5, NWS Bismarck, ND

June 20, 2015McHenry County, Pierce County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jun 20, 2015, 8:49 PM CDT for McHenry County, Pierce County, North Dakota. It was in force for 26 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: Jun 20, 2015, 8:49 PM CDT (01:49 UTC)
Expired: Jun 20, 2015, 9:15 PM CDT
In force: 26 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties McHenry County, ND, Pierce County, ND

The radar

The Minot AFB radar (KMBX), 56 km from the middle of the area, began a volume at 01:49 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, 1.8 hours before the alert went out and 161 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: 16 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 2184 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

091 
WFUS53 KBIS 210149
TORBIS
NDC049-069-210215-
/O.NEW.KBIS.TO.W.0005.150621T0149Z-150621T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
849 PM CDT SAT JUN 20 2015

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL MCHENRY COUNTY IN NORTH CENTRAL NORTH DAKOTA...
  WEST CENTRAL PIERCE COUNTY IN NORTH CENTRAL NORTH DAKOTA...

* UNTIL 915 PM CDT
    
* AT 848 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 10 MILES NORTHWEST OF BALTA...OR 13 MILES
  SOUTHWEST OF RUGBY...MOVING SOUTHEAST AT 35 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

  SOURCE...RADAR AND SPOTTER INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...BALTA AROUND 905 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE ORRIN
AND SILVA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4822 10040 4835 10021 4820 9990 4807 9997
      4801 10017
TIME...MOT...LOC 0148Z 312DEG 32KT 4824 10023 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

SIMOSKO

1 follow-up statement

907 
WWUS53 KBIS 210204
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
904 PM CDT SAT JUN 20 2015

NDC049-210213-
/O.CAN.KBIS.TO.W.0005.000000T0000Z-150621T0215Z/
MCHENRY ND-
904 PM CDT SAT JUN 20 2015

...THE TORNADO WARNING FOR EAST CENTRAL MCHENRY COUNTY IS
CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. 

LAT...LON 4820 9990 4807 9997 4801 10017 4807 10024
      4833 10024 4835 10021
TIME...MOT...LOC 0203Z 345DEG 25KT 4814 10018 

$$

NDC069-210215-
/O.CON.KBIS.TO.W.0005.000000T0000Z-150621T0215Z/
PIERCE ND-
904 PM CDT SAT JUN 20 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR WEST
CENTRAL PIERCE COUNTY...
    
AT 903 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 6 MILES WEST OF BALTA...OR 18 MILES SOUTHWEST OF RUGBY...
MOVING SOUTH AT 30 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
WEST CENTRAL PIERCE COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
ORRIN AND SILVA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4820 9990 4807 9997 4801 10017 4807 10024
      4833 10024 4835 10021
TIME...MOT...LOC 0203Z 345DEG 25KT 4814 10018 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

SIMOSKO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 7:00 PM CDT	Special Weather Statement	BIS	Bottineau	30 min
Jun 20, 7:33 PM CDT	Special Weather Statement	BIS	Bottineau	27 min
Jun 20, 8:05 PM CDT	Special Weather Statement	BIS	McHenry	25 min
Jun 20, 8:09 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, Pierce	66 min
Jun 20, 8:27 PM CDT	Tornado Warning	BIS	McHenry, Pierce	33 min
Jun 20, 9:16 PM CDT	Severe Thunderstorm Warning	BIS	Pierce, Sheridan, Wells	59 min
Jun 20, 10:17 PM CDT	Severe Thunderstorm Warning	BIS	Wells	43 min
Jun 20, 11:00 PM CDT	Special Weather Statement	BIS	Wells	30 min
Jun 21, 2:26 PM CDT	Special Weather Statement	BIS	Divide	49 min
Jun 21, 2:51 PM CDT	Severe Thunderstorm Warning	BIS	Divide, Williams	54 min
Jun 21, 3:14 PM CDT	Special Weather Statement	BIS	Burke	31 min
Jun 21, 3:54 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail, Ward	51 min
Jun 21, 4:47 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail, Renville, Ward	30 min
Jun 21, 5:31 PM CDT	Special Weather Statement	BIS	Bottineau	29 min
Jun 21, 5:35 PM CDT	Severe Thunderstorm Warning	BIS	Bowman	55 min
Jun 21, 6:23 PM CDT	Special Weather Statement	BIS	Ward	37 min
Jun 21, 6:28 PM CDT	Severe Thunderstorm Warning	BIS	Bowman	62 min
Jun 21, 6:41 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger, Slope	64 min
Jun 21, 6:58 PM CDT	Special Weather Statement	BIS	Pierce	32 min

Nearby

Tornado Warnings in North Dakota, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.