Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 87, NWS Bismarck, ND

July 26, 2011Dickey County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 26, 2011, 7:06 PM CDT for Dickey County, North Dakota. It was in force for 24 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: Jul 26, 2011, 7:06 PM CDT (00:06 UTC)
Expired: Jul 26, 2011, 7:30 PM CDT
In force: 24 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

County Dickey County, ND

The radar

The Aberdeen radar (KABR), 72 km from the middle of the area, began a volume at 00:07 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
Jul 26, 5:21 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.1 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: 3555 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 900 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 289 m²/s²
0-3 km storm-relative helicity: 399 m²/s²
Significant tornado parameter: 7.2
Supercell composite: 32.6

Open this sounding in Storm Lab

The text

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

497 
WFUS53 KBIS 270006
TORBIS
NDC021-270030-
/O.NEW.KBIS.TO.W.0087.110727T0006Z-110727T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
706 PM CDT TUE JUL 26 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DICKEY COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 730 PM CDT

* AT 702 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES NORTHEAST OF ELLENDALE...OR 59 MILES
  SOUTH OF JAMESTOWN...AND MOVING EAST AT 15 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  GUELPH AROUND 730 PM CDT.

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.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

&&

LAT...LON 4620 9813 4598 9810 4598 9863 4614 9864
TIME...MOT...LOC 0006Z 265DEG 13KT 4607 9842

$$

SCHECK/SIMOSKO

2 follow-up statements

238 
WWUS53 KBIS 270022
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
722 PM CDT TUE JUL 26 2011

NDC021-270030-
/O.CON.KBIS.TO.W.0087.000000T0000Z-110727T0030Z/
DICKEY ND-
722 PM CDT TUE JUL 26 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL DICKEY COUNTY
UNTIL 730 PM CDT...

AT 715 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS 
STORM WAS LOCATED 7 MILES SOUTH OF FULLERTON...OR 60 MILES SOUTH OF 
JAMESTOWN...MOVING EAST AT 15 MPH.

ADDITIONALLY...DICKEY COUNTY EMERGENCY MANAGEMENT REPORTS VERY LOW 
CLOUDS...SO THIS POSSIBLE TORNADO MAY BE DIFFICULT TO SEE.

THIS DANGEROUS STORM WILL BE NEAR...
  GUELPH AROUND 730 PM CDT.

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.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

&&

LAT...LON 4599 9843 4611 9842 4620 9813 4598 9810
TIME...MOT...LOC 0021Z 265DEG 13KT 4607 9834

$$

SCHECK/SIMOSKO

279 
WWUS53 KBIS 270032
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
732 PM CDT TUE JUL 26 2011

NDC021-270040-
/O.EXP.KBIS.TO.W.0087.000000T0000Z-110727T0030Z/
DICKEY ND-
732 PM CDT TUE JUL 26 2011

...THE TORNADO WARNING FOR EAST CENTRAL DICKEY COUNTY HAS BEEN 
REPLACED BY A SEVERE THUNDERSTORM WARNING...

THE STORM WHICH PROMPTED THE WARNING REMAINS SEVERE WITH WIND GUSTS 
TO 70 MPH EXPECTED.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
EASTERN DICKEY COUNTY UNTIL 8 PM CDT.

LAT...LON 4599 9843 4611 9842 4620 9813 4598 9810
TIME...MOT...LOC 0022Z 265DEG 13KT 4607 9833

$$

SCHECK/SIMOSKO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 7:04 PM CDT	Severe Thunderstorm Warning	BIS	Williams	28 min
Jul 26, 7:29 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	31 min
Jul 26, 8:01 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	17 min
Jul 27, 5:51 AM CDT	Dense Fog Advisory	BIS	Bottineau, Burleigh, Dickey, Emmons, Foster, Grant and 12 more	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.