Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 39, NWS Bismarck, ND

July 10, 2011McIntosh County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 10, 2011, 3:38 PM CDT for McIntosh County, North Dakota. It was in force for 37 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 10, 2011, 3:38 PM CDT (20:38 UTC)
Expired: Jul 10, 2011, 4:15 PM CDT
In force: 37 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

County McIntosh County, ND

The radar

The Aberdeen radar (KABR), 95 km from the middle of the area, began a volume at 20:38 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 10, 4:09 PM CDT	TSTM WND DMG	12 Ese Ashley, ND	SHINGLES BLOWN OFF ROOF. WINDS ESTIMATED AT LEAST 60 MPH.

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 10, 11:08 AM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 10, 2:29 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.6 hours before the alert went out and 134 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: 168 J/kg
Mixed-layer CIN: -388 J/kg
Mixed-layer LCL: 1832 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 99 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.

636 
WFUS53 KBIS 102038
TORBIS
NDC051-102115-
/O.NEW.KBIS.TO.W.0039.110710T2038Z-110710T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
338 PM CDT SUN JUL 10 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN MCINTOSH COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 415 PM CDT

* AT 335 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 1 MILE 
  WEST OF ASHLEY.... DOPPLER RADAR SHOWED   THIS TORNADO MOVING EAST 
  AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ASHLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

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.

&&

LAT...LON 4596 9959 4613 9951 4601 9900 4593 9908
      4593 9944
TIME...MOT...LOC 2038Z 288DEG 33KT 4601 9942

$$

SIMOSKO

2 follow-up statements

482 
WWUS53 KBIS 102059
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
359 PM CDT SUN JUL 10 2011

NDC051-102115-
/O.CON.KBIS.TO.W.0039.000000T0000Z-110710T2115Z/
MCINTOSH ND-
359 PM CDT SUN JUL 10 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN MCINTOSH
COUNTY UNTIL 415 PM CDT...

AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THIS DANGEROUS STORM WAS LOCATED 7
MILES NORTH OF LONG LAKE...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN MCINTOSH COUNTY.

LAW ENFORCEMENT REPORTED A TORNADO ON THE GROUND...ONE MILE WEST OF 
ASHLEY...AT 334 PM CDT. THERE HAVE BEEN NO REPORTS OF A FUNNEL OR 
TORNADO SINCE THAT TIME...BUT ANOTHER TORNADO COULD RE-DEVELOP AT 
ANY TIME.

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 4594 9947 4610 9938 4601 9900 4593 9908
      4593 9944
TIME...MOT...LOC 2058Z 288DEG 33KT 4595 9917

$$

SIMOSKO

453 
WWUS53 KBIS 102114
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
414 PM CDT SUN JUL 10 2011

NDC051-102123-
/O.EXP.KBIS.TO.W.0039.000000T0000Z-110710T2115Z/
MCINTOSH ND-
414 PM CDT SUN JUL 10 2011

...THE TORNADO WARNING FOR SOUTHEASTERN MCINTOSH COUNTY WILL EXPIRE
AT 415 PM CDT/315 PM MDT/...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR THE AREA. VERY STRONG STRAIGHT LINE WINDS AND HEAVY RAIN ARE 
STILL EXPECTED WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 10 PM CDT.

LAT...LON 4594 9947 4610 9938 4601 9900 4593 9908
      4593 9944
TIME...MOT...LOC 2113Z 288DEG 33KT 4591 9898

$$

SIMOSKO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 10:20 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger, Morton, Stark	55 min
Jul 10, 10:58 AM CDT	Severe Thunderstorm Warning	BIS	Stark	62 min
Jul 10, 11:09 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	66 min
Jul 10, 11:16 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	59 min
Jul 10, 11:52 AM CDT	Severe Thunderstorm Warning	BIS	Mercer, Morton, Oliver, Stark	26 min
Jul 10, 12:04 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton	37 min
Jul 10, 12:09 PM CDT	Areal Flood Advisory	BIS	Grant, Morton	6 hr
Jul 10, 12:16 PM CDT	Severe Thunderstorm Warning	BIS	Morton	47 min
Jul 10, 12:33 PM CDT	Severe Thunderstorm Warning	BIS	Grant	15 min
Jul 10, 12:39 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, McLean, Oliver	31 min
Jul 10, 1:01 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	29 min
Jul 10, 1:20 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	55 min
Jul 10, 1:30 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, Morton	60 min
Jul 10, 1:50 PM CDT	Areal Flood Advisory	BIS	Burleigh, Morton	4 hr
Jul 10, 2:12 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, Sioux	63 min
Jul 10, 2:22 PM CDT	Tornado Warning	BIS	Emmons, Sioux	23 min
Jul 10, 2:23 PM CDT	Areal Flood Advisory	BIS	Grant, Sioux	4 hr
Jul 10, 2:27 PM CDT	Tornado Warning	BIS	Emmons, Logan	33 min
Jul 10, 2:30 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, Kidder, Logan	30 min
Jul 10, 2:51 PM CDT	Areal Flood Advisory	BIS	Burleigh, Emmons, Kidder, Logan, McIntosh, Stutsman	3 hr
Jul 10, 2:51 PM CDT	Severe Thunderstorm Warning	BIS	Logan, McIntosh	54 min
Jul 10, 2:57 PM CDT	Tornado Warning	BIS	Logan, McIntosh	33 min
Jul 10, 3:26 PM CDT	Tornado Warning	BIS	Dickey, LaMoure, Logan, McIntosh	34 min
Jul 10, 3:35 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, McIntosh	55 min
Jul 10, 3:58 PM CDT	Tornado Warning	BIS	Dickey, LaMoure, McIntosh	32 min
Jul 10, 4:08 PM CDT	Areal Flood Advisory	BIS	Dickey, LaMoure	6 hr
Jul 10, 4:10 PM CDT	Tornado Warning	BIS	Dickey, LaMoure	35 min
Jul 10, 4:29 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	51 min
Jul 10, 4:30 PM CDT	Tornado Warning	BIS	Dickey	30 min
Jul 10, 4:36 PM CDT	Tornado Warning	BIS	Dickey	24 min
Jul 10, 5:52 PM CDT	Areal Flood Warning	BIS	Grant, Morton	24 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.