Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 89, NWS Bismarck, ND

August 12, 2011Stutsman County, North Dakota

NWS Bismarck, ND issued this tornado warning at Aug 12, 2011, 3:01 PM CDT for Stutsman County, North Dakota. It was in force for 16 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: Aug 12, 2011, 3:01 PM CDT (20:01 UTC)
Expired: Aug 12, 2011, 3:17 PM CDT
In force: 16 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

County Stutsman County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 111 km from the middle of the area, began a volume at 20:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 12, 1:47 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.0 hours before the alert went out and 158 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: 1057 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 845 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: -21 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.

213 
WFUS53 KBIS 122001
TORBIS
NDC093-122030-
/O.NEW.KBIS.TO.W.0089.110812T2001Z-110812T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
301 PM CDT FRI AUG 12 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL STUTSMAN COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 330 PM CDT.

* AT 258 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR BUCHANAN...OR 14 MILES NORTH OF JAMESTOWN...
  AND MOVING NORTHEAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF CENTRAL STUTSMAN 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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

&&

LAT...LON 4727 9864 4710 9852 4706 9881 4713 9886
TIME...MOT...LOC 2001Z 247DEG 10KT 4711 9878

$$

AYD

2 follow-up statements

108 
WWUS53 KBIS 122010
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
310 PM CDT FRI AUG 12 2011

NDC093-122030-
/O.CON.KBIS.TO.W.0089.000000T0000Z-110812T2030Z/
STUTSMAN ND-
310 PM CDT FRI AUG 12 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL STUTSMAN
COUNTY UNTIL 330 PM CDT...

AT 307 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR BUCHANAN...OR 14 MILES NORTH OF JAMESTOWN...
MOVING NORTHEAST AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF CENTRAL STUTSMAN 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.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

&&

LAT...LON 4727 9864 4710 9852 4706 9881 4713 9886
TIME...MOT...LOC 2011Z 244DEG 4KT 4711 9878

$$

AYD

556 
WWUS53 KBIS 122017
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
317 PM CDT FRI AUG 12 2011

NDC093-122027-
/O.CAN.KBIS.TO.W.0089.000000T0000Z-110812T2030Z/
STUTSMAN ND-
317 PM CDT FRI AUG 12 2011

...THE TORNADO WARNING FOR EAST CENTRAL STUTSMAN COUNTY IS
CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA.

LAT...LON 4727 9864 4710 9852 4706 9881 4713 9886
TIME...MOT...LOC 2017Z 244DEG 4KT 4711 9877

$$

AYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 4:19 AM CDT	Areal Flood Advisory	BIS	Divide, Williams	3 hr
Aug 12, 12:41 PM CDT	Areal Flood Advisory	BIS	Bottineau, Pierce, Rolette	6 hr
Aug 12, 12:53 PM CDT	Flash Flood Warning	BIS	Kidder, Sheridan, Wells	6 hr
Aug 12, 1:53 PM CDT	Flash Flood Warning	BIS	Kidder, Stutsman	5 hr
Aug 12, 2:27 PM CDT	Flash Flood Warning	BIS	Foster, Stutsman	5 hr
Aug 12, 2:35 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	55 min
Aug 12, 3:08 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure	67 min
Aug 12, 3:28 PM CDT	Tornado Warning	BIS	Stutsman	32 min
Aug 12, 3:29 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	31 min
Aug 12, 3:53 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	45 min
Aug 12, 3:59 PM CDT	Tornado Warning	BIS	LaMoure	31 min
Aug 12, 4:15 PM CDT	Areal Flood Advisory	BIS	Dickey, LaMoure	6 hr
Aug 12, 6:56 PM CDT	Areal Flood Warning	BIS	Foster, Kidder, Stutsman, Wells	65 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.