Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 16, NWS Bismarck, ND

June 20, 2011McLean County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jun 20, 2011, 2:31 PM CDT for McLean County, North Dakota. It was in force for 29 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, 2011, 2:31 PM CDT (19:31 UTC)
Expired: Jun 20, 2011, 3:00 PM CDT
In force: 29 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

County McLean County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.5 hours before the alert went out and 142 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: 17 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1023 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 76 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.

982 
WFUS53 KBIS 201931
TORBIS
NDC055-202000-
/O.NEW.KBIS.TO.W.0016.110620T1931Z-110620T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
231 PM CDT MON JUN 20 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN MCLEAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 300 PM CDT

* AT 228 PM CDT...THE PUBLIC REPORTED A TORNADO NEAR INDIAN HILLS
  RECREATION AREA...OR 55 MILES SOUTHWEST OF MINOT. DOPPLER RADAR
  SHOWED THIS TORNADO MOVING WEST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  INDIAN HILLS RECREATION AREA...RAUB AND DEEP WATER CREEK           
  RECREATION AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

IF ON OR NEAR A LAKE OR RIVER...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH
TO BE STRUCK BY LIGHTNING. IN ADDITION...THUNDERSTORMS CAN PRODUCE
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO DOCK
AND SEEK SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A
THUNDERSTORM.

&&

LAT...LON 4777 10198 4753 10187 4756 10203 4758 10204
      4757 10205 4759 10221 4784 10228
TIME...MOT...LOC 1929Z 104DEG 11KT 4760 10203

$$

HW

2 follow-up statements

134 
WWUS53 KBIS 201951
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
251 PM CDT MON JUN 20 2011

NDC055-202000-
/O.CON.KBIS.TO.W.0016.000000T0000Z-110620T2000Z/
MCLEAN ND-
251 PM CDT MON JUN 20 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN MCLEAN COUNTY
UNTIL 300 PM CDT...

AT 246 PM CDT...THE RADAR CONTINUES TO INDICATE CIRCULATION OVER 
SOUTHWEST MCLEAN COUNTY...NEAR INDIAN HILLS RECREATION AREA...OR 57 
MILES SOUTHWEST OF MINOT...MOVING SOUTHWEST AT 15 MPH. A BRIEF 
TORNADO TOUCHDOWN WAS REPORTED EARLIER WITH THIS STORM. THE STORM 
HAS MOVED OVER LAKE SAKAKAWEA. 

LOCATIONS IMPACTED INCLUDE...
  DEEP WATER CREEK RECREATION AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN WESTERN MCLEAN COUNTY STAY IN A SAVE SHELTER UNTIL THE 
STORMS HAVE PASSED. 

&&

LAT...LON 4777 10198 4753 10187 4756 10203 4758 10204
      4757 10205 4759 10221 4784 10228
TIME...MOT...LOC 1948Z 104DEG 11KT 4761 10211

$$

WETZEL

936 
WWUS53 KBIS 201959
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
259 PM CDT MON JUN 20 2011

NDC055-202008-
/O.EXP.KBIS.TO.W.0016.000000T0000Z-110620T2000Z/
MCLEAN ND-
259 PM CDT MON JUN 20 2011

...THE TORNADO WARNING FOR NORTHWESTERN MCLEAN COUNTY WILL EXPIRE AT
300 PM CDT/200 PM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE 
LIMITS. HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4777 10198 4753 10187 4756 10203 4758 10204
      4757 10205 4759 10221 4784 10228
TIME...MOT...LOC 1958Z 180DEG 0KT 4761 10210

$$

WETZEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 7:36 PM CDT	Tornado Warning	BIS	Golden Valley	24 min
Jun 19, 8:26 PM CDT	Flash Flood Warning	BIS	Golden Valley	3 hr
Jun 19, 11:15 PM CDT	Areal Flood Warning	BIS	Mountrail	17 hr
Jun 20, 1:04 AM CDT	Areal Flood Advisory	BIS	Stutsman	5 hr
Jun 20, 5:58 AM CDT	Areal Flood Advisory	BIS	Foster, Stutsman	25 min
Jun 20, 6:19 AM CDT	Flash Flood Warning	BIS	Foster, Stutsman	6 hr
Jun 20, 2:12 PM CDT	Tornado Warning	BIS	Oliver	33 min
Jun 20, 2:46 PM CDT	Tornado Warning	BIS	Morton	29 min
Jun 20, 3:15 PM CDT	Tornado Warning	BIS	Mercer	30 min
Jun 20, 6:53 PM CDT	Areal Flood Advisory	BIS	Oliver	12 hr

Nearby

Tornado Warnings in North Dakota, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.