Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 21, NWS Bismarck, ND

July 8, 20114 counties in North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 8, 2011, 5:15 PM CDT for 4 counties in North Dakota. It was in force for 30 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 8, 2011, 5:15 PM CDT (22:15 UTC)
Expired
Jul 8, 2011, 5:45 PM CDT
In force
30 min
Issued by
NWS Bismarck, ND
Area
Storm-based polygon

Counties Foster County, ND, Kidder County, ND, Stutsman County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 116 km from the middle of the area, began a volume at 22:15 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.

IssuedProductOfficeLasted
Jul 8, 2:32 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.3 hours before the alert went out and 112 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2011-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2011-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
57 J/kg
Mixed-layer CIN
-207 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

799 
WFUS53 KBIS 082215
TORBIS
NDC031-043-093-103-082245-
/O.NEW.KBIS.TO.W.0021.110708T2215Z-110708T2245Z/

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

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN FOSTER COUNTY IN SOUTHEAST NORTH DAKOTA...
  NORTHEASTERN KIDDER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  NORTHWESTERN STUTSMAN COUNTY IN SOUTHEAST NORTH DAKOTA...
  SOUTHEASTERN WELLS COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 545 PM CDT

* AT 510 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR PETTIBONE...OR 38 MILES WEST OF JAMESTOWN...
  AND MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WOODWORTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL UP TO GOLFBALL SIZE AND VERY HEAVY RAIN CAN ALSO BE 
EXPECTED WITH THIS STORM. MOTORISTS SHOULD NOT TAKE SHELTER UNDER 
HIGHWAY OVERPASSES. AS A LAST RESORT...EITHER PARK YOUR VEHICLE AND 
STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

LAT...LON 4731 9958 4738 9948 4745 9915 4705 9891
      4700 9949 4721 9960
TIME...MOT...LOC 2214Z 249DEG 10KT 4712 9943

$$

HEINERT
1 follow-up statement
964 
WWUS53 KBIS 082234
SVSBIS

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

NDC031-043-103-082243-
/O.CAN.KBIS.TO.W.0021.000000T0000Z-110708T2245Z/
FOSTER ND-KIDDER ND-WELLS ND-
534 PM CDT FRI JUL 8 2011

...THE TORNADO WARNING FOR SOUTHEASTERN WELLS...NORTHEASTERN KIDDER
AND SOUTHWESTERN FOSTER COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING IS NO LONGER EXPECTED TO IMPACT 
THE WARNED AREAS OF WELLS...KIDDER...AND FOSTER COUNTIES.

LAT...LON 4700 9948 4701 9949 4732 9948 4733 9908
      4705 9891
TIME...MOT...LOC 2233Z 249DEG 10KT 4714 9936

$$

NDC093-082245-
/O.CON.KBIS.TO.W.0021.000000T0000Z-110708T2245Z/
STUTSMAN ND-
534 PM CDT FRI JUL 8 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN STUTSMAN
COUNTY UNTIL 545 PM CDT...

AT 529 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR WOODWORTH...OR 35 MILES NORTHWEST OF
JAMESTOWN...MOVING EAST AT 10 MPH.

IN ADDITION TO THE POSSIBLE TORNADO...LARGE HAIL...DAMAGING STRAIGHT 
LINE WINDS...AND VERY HEAVY RAIN CAN ALSO BE EXPECTED WITH THIS 
STORM. SEEK SHELTER IMMEDIATELY!

LOCATIONS IMPACTED INCLUDE...
  WOODWORTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

LAT...LON 4700 9948 4701 9949 4732 9948 4733 9908
      4705 9891
TIME...MOT...LOC 2233Z 249DEG 10KT 4714 9936

$$

HEINERT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 2:29 PM CDTTornado WarningBISGolden Valley31 min
Jul 8, 2:51 PM CDTSevere Thunderstorm WarningBISGolden Valley, McKenzie39 min
Jul 8, 3:19 PM CDTAreal Flood AdvisoryBISBurke, Mountrail, Renville, Ward3 hr
Jul 8, 3:29 PM CDTSevere Thunderstorm WarningBISBurke, Mountrail, Renville, Ward40 min
Jul 8, 3:35 PM CDTSevere Thunderstorm WarningBISGrant55 min
Jul 8, 3:39 PM CDTSevere Thunderstorm WarningBISBillings, Golden Valley66 min
Jul 8, 4:00 PM CDTAreal Flood AdvisoryBISBillings, Dunn, Stark5 hr
Jul 8, 4:12 PM CDTSevere Thunderstorm WarningBISDunn63 min
Jul 8, 4:21 PM CDTSevere Thunderstorm WarningBISBillings, Stark24 min
Jul 8, 4:26 PM CDTSevere Thunderstorm WarningBISGrant, Morton64 min
Jul 8, 4:30 PM CDTSevere Thunderstorm WarningBISGrant, Morton60 min
Jul 8, 4:39 PM CDTAreal Flood AdvisoryBISBurke, Divide, Williams3 hr
Jul 8, 5:18 PM CDTTornado WarningBISGrant, Morton42 min
Jul 8, 5:19 PM CDTSevere Thunderstorm WarningBISDunn, McLean, Mercer14 min
Jul 8, 5:22 PM CDTTornado WarningBISDunn, Mercer23 min
Jul 8, 5:41 PM CDTTornado WarningBISDunn, Mercer49 min
Jul 8, 5:44 PM CDTTornado WarningBISStutsman31 min
Jul 8, 5:53 PM CDTSevere Thunderstorm WarningBISBurleigh, Emmons, Morton, Sioux52 min
Jul 8, 6:15 PM CDTSevere Thunderstorm WarningBISStutsman31 min
Jul 8, 6:21 PM CDTTornado WarningBISEmmons, Morton, Sioux24 min
Jul 8, 6:21 PM CDTTornado WarningBISMcLean, Mercer, Oliver39 min
Jul 8, 6:42 PM CDTTornado WarningBISStutsman33 min
Jul 8, 6:45 PM CDTTornado WarningBISEmmons, Morton, Sioux45 min
Jul 8, 6:52 PM CDTAreal Flood AdvisoryBISStutsman6 hr
Jul 8, 6:59 PM CDTSevere Thunderstorm WarningBISMcHenry, McLean, Oliver, Sheridan61 min

Nearby

Tornado Warnings in North Dakota, 2011Every tornado warning in 2011Tornadoes 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.