Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 86, NWS Bismarck, ND

July 22, 2011Adams County, Sioux County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 22, 2011, 10:02 PM MDT for Adams County, Sioux County, North Dakota. It was in force for 13 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 22, 2011, 10:02 PM MDT (04:02 UTC)
Expired: Jul 22, 2011, 10:15 PM MDT
In force: 13 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

Counties Adams County, ND, Sioux County, ND

The radar

The Bismarck radar (KBIS), 122 km from the middle of the area, began a volume at 04:01 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 22, 4:35 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 4.0 hours before the alert went out and 126 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: 1986 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1048 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 7.2

Open this sounding in Storm Lab

The text

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

086 
WFUS53 KBIS 230402
TORBIS
NDC001-085-230415-
/O.NEW.KBIS.TO.W.0086.110723T0402Z-110723T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
1002 PM MDT FRI JUL 22 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ADAMS COUNTY IN SOUTHWEST NORTH DAKOTA...
  SOUTHWESTERN SIOUX COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 1015 PM MDT

* AT 957 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES NORTH OF THUNDER HAWK...OR 12 MILES
  NORTHEAST OF LEMMON...AND MOVING SOUTHEAST AT 40 MPH.

* THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHEASTERN
  ADAMS AND SOUTHWESTERN SIOUX COUNTIES.

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.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4601 10209 4606 10197 4605 10196 4607 10194
      4606 10190 4607 10185 4604 10185 4602 10180
      4594 10173 4593 10203
TIME...MOT...LOC 0402Z 332DEG 36KT 4597 10191

$$

SCHECK/TAEGER

1 follow-up statement

578 
WWUS53 KBIS 230420
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1120 PM CDT FRI JUL 22 2011

NDC001-085-230430-
/O.EXP.KBIS.TO.W.0086.000000T0000Z-110723T0415Z/
ADAMS ND-SIOUX ND-
1020 PM MDT FRI JUL 22 2011

...THE TORNADO WARNING FOR SOUTHWESTERN SIOUX AND SOUTHEASTERN ADAMS
COUNTIES HAS EXPIRED...

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

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

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT.

LAT...LON 4601 10209 4606 10197 4605 10196 4607 10194
      4606 10190 4607 10185 4604 10185 4602 10180
      4594 10173 4593 10203
TIME...MOT...LOC 0402Z 332DEG 36KT 4597 10191

$$

SCHECK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 6:15 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Bowman, Golden Valley, Slope	60 min
Jul 22, 6:40 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Golden Valley, McKenzie, Williams	65 min
Jul 22, 6:48 PM MDT	Flash Flood Warning	BIS	Dunn, McKenzie	6 hr
Jul 22, 7:04 PM MDT	Flash Flood Warning	BIS	Billings, Dunn, Golden Valley, McKenzie, Stark	6 hr
Jul 22, 7:06 PM MDT	Tornado Warning	BIS	Dunn, McKenzie	39 min
Jul 22, 7:10 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Golden Valley, Stark	65 min
Jul 22, 7:15 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger, Slope	60 min
Jul 22, 7:18 PM MDT	Tornado Warning	BIS	Billings, Stark	27 min
Jul 22, 7:32 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, McKenzie, McLean, Mercer, Mountrail	58 min
Jul 22, 7:41 PM MDT	Tornado Warning	BIS	Billings, Stark	34 min
Jul 22, 7:49 PM MDT	Flash Flood Warning	BIS	Dunn, McLean, Mercer, Mountrail	6 hr
Jul 22, 7:55 PM MDT	Tornado Warning	BIS	Dunn	35 min
Jul 22, 8:08 PM MDT	Tornado Warning	BIS	Hettinger, Slope, Stark	37 min
Jul 22, 8:13 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer, Morton, Oliver, Stark	62 min
Jul 22, 8:15 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Grant, Hettinger	60 min
Jul 22, 8:22 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, McLean, Mercer, Mountrail, Oliver, Ward	53 min
Jul 22, 8:33 PM MDT	Tornado Warning	BIS	Hettinger, Slope	27 min
Jul 22, 8:51 PM MDT	Tornado Warning	BIS	McLean, Mercer	24 min
Jul 22, 8:56 PM MDT	Tornado Warning	BIS	Adams, Grant, Hettinger	34 min
Jul 22, 9:00 PM MDT	Tornado Warning	BIS	Morton, Oliver	30 min
Jul 22, 9:12 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton, Oliver	63 min
Jul 22, 9:14 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, McLean, Mercer, Oliver, Sheridan	61 min
Jul 22, 9:16 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Burleigh, Emmons, Grant, Hettinger, Morton and 1 more	59 min
Jul 22, 9:25 PM MDT	Tornado Warning	BIS	Adams, Grant, Hettinger, Sioux	35 min
Jul 22, 9:27 PM MDT	Tornado Warning	BIS	Burleigh, Morton, Oliver	33 min
Jul 22, 9:51 PM MDT	Tornado Warning	BIS	Burleigh, Emmons, Morton, Sioux	24 min
Jul 22, 10:07 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Foster, Kidder, Morton, Sheridan, Stutsman and 1 more	68 min
Jul 22, 10:08 PM MDT	Severe Thunderstorm Warning	BIS	McLean, Oliver, Sheridan, Wells	67 min
Jul 22, 10:11 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Emmons, Grant, Logan, Morton, Sioux	64 min
Jul 22, 10:55 PM MDT	High Wind Warning	BIS	Burke, Divide, Dunn, McKenzie, Mountrail, Renville and 1 more	3 hr
Jul 22, 10:59 PM MDT	Areal Flood Advisory	BIS	Dickey, Foster, Kidder, LaMoure, Logan, McIntosh and 2 more	6 hr
Jul 22, 11:08 PM MDT	Severe Thunderstorm Warning	BIS	Dickey, Emmons, LaMoure, Logan, McIntosh, Sioux	52 min
Jul 22, 11:14 PM MDT	Flash Flood Warning	BIS	Foster, Kidder, Stutsman, Wells	6 hr
Jul 22, 11:16 PM MDT	Severe Thunderstorm Warning	BIS	Kidder, Stutsman	59 min
Jul 22, 11:21 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger	54 min
Jul 22, 11:57 PM MDT	Severe Thunderstorm Warning	BIS	Dickey, Kidder, LaMoure, Logan, McIntosh	63 min
Jul 23, 12:09 AM MDT	Severe Thunderstorm Warning	BIS	Stutsman	66 min
Jul 23, 12:15 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger	60 min
Jul 23, 12:28 AM MDT	Areal Flood Advisory	BIS	Adams, Hettinger	4 hr
Jul 23, 12:55 AM MDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	50 min
Jul 23, 1:01 AM MDT	Areal Flood Warning	BIS	Dunn, McKenzie	12 hr
Jul 23, 2:04 AM MDT	Wind Advisory	BIS	Bottineau, Burke, Burleigh, Dickey, Emmons, Foster and 15 more	4 hr
Jul 23, 5:01 AM MDT	Areal Flood Warning	BIS	Foster, Kidder, Stutsman, Wells	8 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.