Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 31, NWS Bismarck, ND

July 8, 20114 counties in North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 8, 2011, 8:16 PM CDT for 4 counties in North Dakota. It was in force for 29 min. 1 report 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: Jul 8, 2011, 8:16 PM CDT (01:16 UTC)
Expired: Jul 8, 2011, 8:45 PM CDT
In force: 29 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

Counties Burleigh County, ND, Emmons County, ND, Kidder County, ND, Logan County, ND

The radar

The Bismarck radar (KBIS), 68 km from the middle of the area, began a volume at 01:18 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
Jul 8, 8:35 PM CDT	TORNADO	W Napoleon, ND	PUBLIC REPORTED A TORNADO ON THE GROUND. RELAYED VIA STATE RADIO.

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
Jul 8, 2:32 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.3 hours before the alert went out and 229 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: 975 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1645 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

779 
WFUS53 KBIS 090116
TORBIS
NDC015-029-043-047-090145-
/O.NEW.KBIS.TO.W.0031.110709T0116Z-110709T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
816 PM CDT FRI JUL 8 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BURLEIGH COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  NORTHEASTERN EMMONS COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  SOUTHERN KIDDER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  NORTHWESTERN LOGAN COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 845 PM CDT

* AT 813 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR BRADDOCK...OR 36 MILES EAST OF BISMARCK...
  AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NAPOLEON...LAKE ISABEL...STEELE...DAWSON AND TAPPEN.

THIS STORM HAS A HISTORY OF PRODUCING AT LEAST ONE CONFIRMED 
TORNADO...AND NUMEROUS FUNNEL CLOUDS. 

LARGE HAIL...DAMAGING STRAIGHT LINE WINDS...AND VERY HEAVY RAIN CAN 
ALSO BE EXPECTED WITH THIS STORM. 

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 4677 10018 4691 9982 4691 9948 4661 9948
      4646 9963 4644 10005 4662 10023
TIME...MOT...LOC 0116Z 230DEG 25KT 4663 10005

$$

HEINERT

2 follow-up statements

350 
WWUS53 KBIS 090133
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
833 PM CDT FRI JUL 8 2011

NDC015-090142-
/O.CAN.KBIS.TO.W.0031.000000T0000Z-110709T0145Z/
BURLEIGH ND-
833 PM CDT FRI JUL 8 2011

...THE TORNADO WARNING FOR SOUTHEASTERN BURLEIGH COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA. 

LAT...LON 4662 10009 4675 10008 4690 9984 4691 9982
      4691 9948 4661 9948 4646 9963 4644 10005
TIME...MOT...LOC 0132Z 262DEG 20KT 4655 9989

$$

NDC029-043-047-090145-
/O.CON.KBIS.TO.W.0031.000000T0000Z-110709T0145Z/
EMMONS ND-KIDDER ND-LOGAN ND-
833 PM CDT FRI JUL 8 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN LOGAN...
SOUTHERN KIDDER AND NORTHEASTERN EMMONS COUNTIES UNTIL 845 PM CDT...

AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR KINTYRE...OR 45 MILES SOUTHEAST OF BISMARCK...
MOVING EAST AT 25 MPH.

VERY HEAVY RAIN CAN ALSO BE EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  NAPOLEON...LAKE ISABEL...DAWSON AND TAPPEN.

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 4662 10009 4675 10008 4690 9984 4691 9982
      4691 9948 4661 9948 4646 9963 4644 10005
TIME...MOT...LOC 0132Z 262DEG 20KT 4655 9989

$$

HEINERT

193 
WWUS53 KBIS 090144
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
844 PM CDT FRI JUL 8 2011

NDC029-043-047-090153-
/O.EXP.KBIS.TO.W.0031.000000T0000Z-110709T0145Z/
EMMONS ND-KIDDER ND-LOGAN ND-
844 PM CDT FRI JUL 8 2011

...THE TORNADO WARNING FOR NORTHWESTERN LOGAN AND SOUTHERN KIDDER 
COUNTIES IS BEING REISSUED...

PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.

LAT...LON 4662 10009 4675 10008 4690 9984 4691 9982
      4691 9948 4661 9948 4646 9963 4644 10005
TIME...MOT...LOC 0143Z 262DEG 20KT 4656 9980

$$

HEINERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 7:15 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	60 min
Jul 8, 7:25 PM CDT	Tornado Warning	BIS	Burleigh, Emmons, Kidder	50 min
Jul 8, 7:31 PM CDT	Areal Flood Warning	BIS	Burke, Divide, Mountrail, Ward	6 hr
Jul 8, 7:42 PM CDT	Flash Flood Warning	BIS	Stutsman	6 hr
Jul 8, 8:06 PM CDT	Areal Flood Advisory	BIS	Burleigh, Emmons, Grant, Morton, Sioux	11 hr
Jul 8, 8:42 PM CDT	Tornado Warning	BIS	Kidder, Logan, Stutsman	48 min
Jul 8, 8:51 PM CDT	River Flood Warning	BIS	Stutsman	4 days
Jul 8, 8:57 PM CDT	Tornado Warning	BIS	Emmons, Logan, McIntosh	36 min
Jul 8, 9:20 PM CDT	Areal Flood Advisory	BIS	Emmons, Kidder, Logan, McIntosh, Sioux, Stutsman	6 hr
Jul 8, 9:30 PM CDT	Tornado Warning	BIS	Kidder, Logan, Stutsman	45 min
Jul 8, 9:52 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	53 min
Jul 8, 10:30 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	60 min
Jul 8, 11:09 PM CDT	Areal Flood Advisory	BIS	Dickey, LaMoure	11 hr
Jul 9, 1:41 AM CDT	Areal Flood Warning	BIS	Stutsman	12 hr
Jul 9, 2:01 AM CDT	Areal Flood Advisory	BIS	McKenzie, Williams	5 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.