Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 11, NWS Bismarck, ND

June 17, 2011LaMoure County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jun 17, 2011, 5:22 PM CDT for LaMoure County, North Dakota. It was in force for 23 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 17, 2011, 5:22 PM CDT (22:22 UTC)
Expired: Jun 17, 2011, 5:45 PM CDT
In force: 23 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

County LaMoure County, ND

The radar

The Aberdeen radar (KABR), 118 km from the middle of the area, began a volume at 22:23 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

Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 179 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: 35 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 106 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.

222 
WFUS53 KBIS 172222
TORBIS
NDC045-172245-
/O.NEW.KBIS.TO.W.0011.110617T2222Z-110617T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
522 PM CDT FRI JUN 17 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN LAMOURE COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 545 PM CDT

* AT 515 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD   
  3 MILES NORTH OF LA MOURE...OR 40 MILES SOUTHEAST OF JAMESTOWN. A  
  TORNADO MAY DEVELOP AT ANY TIME. DOPPLER RADAR SHOWED THIS         
  DANGEROUS STORM MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN LAMOURE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4636 9830 4640 9841 4664 9823 4664 9803
      4662 9802 4649 9803
TIME...MOT...LOC 2219Z 216DEG 15KT 4642 9828

$$

HAMILTON

2 follow-up statements

564 
WWUS53 KBIS 172238
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
538 PM CDT FRI JUN 17 2011

NDC045-172245-
/O.CON.KBIS.TO.W.0011.000000T0000Z-110617T2245Z/
LAMOURE ND-
538 PM CDT FRI JUN 17 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN LAMOURE
COUNTY UNTIL 545 PM CDT...

AT 522 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 
NEAR LA MOURE. THE THUNDERSTORM PRODUCING THIS FUNNEL CLOUD MAY 
DEVELOP A TORNADO AT ANY TIME. THIS DANGEROUS STORM HAS MOVED WELL 
NORTHEAST OF LA MOURE AND WAS LOCATED 33 MILES SOUTH OF VALLEY 
CITY...OR 38 MILES SOUTHEAST OF JAMESTOWN...MOVING NORTHEAST AT 15 
MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN LAMOURE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4642 9817 4645 9827 4664 9823 4664 9803
      4662 9802 4649 9803
TIME...MOT...LOC 2236Z 216DEG 15KT 4648 9822

$$

HAMILTON

853 
WWUS53 KBIS 172250
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
550 PM CDT FRI JUN 17 2011

NDC045-172300-
/O.EXP.KBIS.TO.W.0011.000000T0000Z-110617T2245Z/
LAMOURE ND-
550 PM CDT FRI JUN 17 2011

...THE TORNADO WARNING FOR NORTHEASTERN LAMOURE COUNTY HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 1 AM CDT.

LAT...LON 4642 9817 4645 9827 4664 9823 4664 9803
      4662 9802 4649 9803
TIME...MOT...LOC 2238Z 216DEG 15KT 4649 9821

$$

HAMILTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 9:35 AM CDT	Areal Flood Advisory	BIS	Divide	9 hr
Jun 17, 5:47 PM CDT	High Wind Warning	BIS	Divide, Williams	4 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; radar from the NEXRAD Level II archive.