Alert archive / North Dakota / Tornado Warnings in 2016

Tornado Warning 23, NWS Bismarck, ND

August 3, 2016Rolette County, North Dakota

NWS Bismarck, ND issued this tornado warning at Aug 3, 2016, 5:31 PM CDT for Rolette County, North Dakota. It was in force for 19 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: Aug 3, 2016, 5:31 PM CDT (22:31 UTC)
Expired: Aug 3, 2016, 5:50 PM CDT
In force: 19 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Rolette County, ND

The radar

The Minot AFB radar (KMBX), 101 km from the middle of the area, began a volume at 22:35 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
Aug 3, 5:40 PM CDT	TORNADO	3 Sw Agate, ND	DAMAGE TO FARM BUILDINGS. .
Aug 3, 5:40 PM CDT	TORNADO	4 Sw Agate, ND	DAMAGE TO FARM BUILDINGS. .

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
Aug 3, 3:38 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.5 hours before the alert went out and 221 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: 58 J/kg
Mixed-layer CIN: -522 J/kg
Mixed-layer LCL: 1927 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

591 
WFUS53 KBIS 032231
TORBIS
NDC079-032300-
/O.NEW.KBIS.TO.W.0023.160803T2231Z-160803T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
531 PM CDT WED AUG 3 2016

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ROLETTE COUNTY IN NORTH CENTRAL NORTH DAKOTA...

* UNTIL 600 PM CDT
    
* AT 530 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 8 MILES SOUTHWEST OF BISBEE...OR 20 MILES
  SOUTH OF ROLLA...MOVING NORTHEAST AT 15 MPH.

  HAZARD...TORNADO. 

  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
  SOUTHEASTERN ROLETTE COUNTY...INCLUDING THE FOLLOWING LOCATIONS:
  AGATE.

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 4855 9949 4854 9950 4855 9961 4856 9963
      4872 9952 4872 9949
TIME...MOT...LOC 2230Z 224DEG 13KT 4856 9954 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JONES

4 follow-up statements

064 
WWUS53 KBIS 032233
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
533 PM CDT WED AUG 3 2016

NDC079-032300-
/O.CON.KBIS.TO.W.0023.000000T0000Z-160803T2300Z/
ROLETTE ND-
533 PM CDT WED AUG 3 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN ROLETTE COUNTY...
    
AT 533 PM CDT...A CONFIRMED TORNADO WAS LOCATED 8 MILES SOUTHWEST OF
BISBEE...OR 19 MILES SOUTH OF ROLLA...MOVING NORTHEAST AT 20 MPH.

HAZARD...DAMAGING TORNADO AND BASEBALL SIZE HAIL. 

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. 

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. 

LOCATIONS IMPACTED INCLUDE...
AGATE.

LAT...LON 4855 9949 4854 9950 4855 9961 4856 9963
      4872 9952 4872 9949
TIME...MOT...LOC 2233Z 204DEG 18KT 4858 9954 

TORNADO...OBSERVED
HAIL...2.75IN

$$

JONES

557 
WWUS53 KBIS 032235
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
535 PM CDT WED AUG 3 2016

NDC079-032300-
/O.CON.KBIS.TO.W.0023.000000T0000Z-160803T2300Z/
ROLETTE ND-
535 PM CDT WED AUG 3 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN ROLETTE COUNTY...
    
AT 535 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS
LOCATED 7 MILES WEST OF BISBEE...OR 19 MILES SOUTH OF ROLLA...MOVING
NORTHEAST AT 15 MPH.

THIS IS A PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...DAMAGING TORNADO. 

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. AT 535 PM TIME...A
         LARGE TORANDO WAS REPORTED 5 MILES SOUTH OF MILO.  

IMPACT...YOU ARE IN A LIFE-THREATENING SITUATION. FLYING DEBRIS MAY
         BE DEADLY TO THOSE CAUGHT WITHOUT SHELTER. MOBILE HOMES
         WILL BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES...
         BUSINESSES...AND VEHICLES IS LIKELY AND COMPLETE
         DESTRUCTION IS POSSIBLE. 

LOCATIONS IMPACTED INCLUDE...
AGATE.

LAT...LON 4855 9949 4854 9950 4855 9961 4856 9963
      4872 9952 4872 9949
TIME...MOT...LOC 2235Z 224DEG 13KT 4858 9953 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...2.75IN

$$

JONES

779 
WWUS53 KBIS 032241
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
541 PM CDT WED AUG 3 2016

NDC079-032300-
/O.CON.KBIS.TO.W.0023.000000T0000Z-160803T2300Z/
ROLETTE ND-
541 PM CDT WED AUG 3 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR EASTERN
ROLETTE COUNTY...
    
AT 541 PM CDT...A CONFIRMED LARGE AND EXTREMELY DANGEROUS TORNADO WAS
LOCATED 6 MILES WEST OF BISBEE...OR 17 MILES SOUTH OF ROLLA...MOVING
NORTHEAST AT 15 MPH.

THIS IS A PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...DAMAGING TORNADO. 

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. 

IMPACT...YOU ARE IN A LIFE-THREATENING SITUATION. FLYING DEBRIS MAY
         BE DEADLY TO THOSE CAUGHT WITHOUT SHELTER. MOBILE HOMES
         WILL BE DESTROYED. CONSIDERABLE DAMAGE TO HOMES...
         BUSINESSES...AND VEHICLES IS LIKELY AND COMPLETE
         DESTRUCTION IS POSSIBLE. 

LOCATIONS IMPACTED INCLUDE...
AGATE.

LAT...LON 4856 9949 4858 9957 4867 9954 4872 9949
TIME...MOT...LOC 2241Z 216DEG 15KT 4861 9951 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...2.75IN

$$

JONES

071 
WWUS53 KBIS 032250
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
550 PM CDT WED AUG 3 2016

NDC079-032258-
/O.CAN.KBIS.TO.W.0023.000000T0000Z-160803T2300Z/
ROLETTE ND-
550 PM CDT WED AUG 3 2016

...THE TORNADO WARNING FOR EASTERN ROLETTE COUNTY IS CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTH CENTRAL
NORTH DAKOTA.

REMEMBER...A TORNADO WARNING STILL REMAINS IN EFFECT FOR TOWNER
COUNTY.

LAT...LON 4856 9949 4858 9957 4867 9954 4872 9949
TIME...MOT...LOC 2246Z 224DEG 13KT 4863 9948 

$$

JONES

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 9:46 PM CDT	Special Weather Statement	BIS	Bowman	44 min
Aug 3, 3:54 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau, Rolette	66 min
Aug 3, 3:58 PM CDT	Severe Thunderstorm Warning	BIS	Pierce, Rolette	62 min
Aug 3, 4:23 PM CDT	Severe Thunderstorm Warning	BIS	Rolette	67 min
Aug 3, 5:00 PM CDT	Severe Thunderstorm Warning	BIS	Pierce, Rolette	60 min
Aug 3, 5:58 PM CDT	Severe Thunderstorm Warning	BIS	Pierce, Rolette	45 min
Aug 3, 6:10 PM CDT	Areal Flood Advisory	BIS	Rolette	3 hr

Nearby

Tornado Warnings in North Dakota, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.