Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 24, NWS Bismarck, ND

July 8, 2011Dunn County, Mercer County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 8, 2011, 4:41 PM MDT for Dunn County, Mercer County, North Dakota. It was in force for 49 min. 2 reports 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, 4:41 PM MDT (22:41 UTC)
Expired
Jul 8, 2011, 5:30 PM MDT
In force
49 min
Issued by
NWS Bismarck, ND
Area
Storm-based polygon

Counties Dunn County, ND, Mercer County, ND

The radar

The Bismarck radar (KBIS), 107 km from the middle of the area, began a volume at 22:43 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

TimeReportWhereRemark
Jul 8, 4:43 PM MDTTORNADO10 E Halliday, NDTHE HALLIDAY COOP OBSERVER REPORTED A TORNADO ON THE GROUND 10 MILES EAST OF HALLIDAY.
Jul 8, 5:02 PM MDTTORNADO1 W Beulah, NDREPORTED BY MERCER COUNTY DEPUTY.

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.

IssuedProductOfficeLasted
Jul 8, 1:32 PM MDTTornado WatchSPC9 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.7 hours before the alert went out and 111 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.

773 
WFUS53 KBIS 082241
TORBIS
NDC025-057-082330-
/O.NEW.KBIS.TO.W.0024.110708T2241Z-110708T2330Z/

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

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL DUNN COUNTY IN SOUTHWEST NORTH DAKOTA...
  NORTHERN MERCER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 630 PM CDT/530 PM MDT/

* AT 538 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A CONFIRMED TORNADO NEAR DODGE...OR 44 MILES NORTHEAST OF
  DICKINSON. DOPPLER RADAR SHOWED THIS TORNADO MOVING EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  ZAP AROUND 555 PM CDT.
  HAZEN AROUND 620 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4722 10220 4747 10224 4751 10189 4750 10181
      4752 10177 4753 10165 4753 10161 4724 10153
      4724 10175 4723 10176
TIME...MOT...LOC 2241Z 262DEG 28KT 4734 10210

$$

KINNEY
3 follow-up statements
415 
WWUS53 KBIS 082258
SVSBIS

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

NDC025-057-082330-
/O.CON.KBIS.TO.W.0024.000000T0000Z-110708T2330Z/
MERCER ND-DUNN ND-
558 PM CDT FRI JUL 8 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL DUNN AND
NORTHERN MERCER COUNTIES UNTIL 630 PM CDT/530 PM MDT/...

AT 552 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR ZAP...OR 45 MILES NORTHEAST OF DICKINSON...
MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  ZAP...BEULAH AND HAZEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

SIGNIFICANT TREE DAMAGE WAS REPORTED IN THE TOWN OF DODGE AROUND 455 
PM MDT.

&&

LAT...LON 4722 10220 4747 10224 4751 10189 4750 10181
      4752 10177 4753 10165 4753 10161 4724 10153
      4724 10175 4723 10176
TIME...MOT...LOC 2257Z 239DEG 25KT 4724 10192

$$

HAMILTON
073 
WWUS53 KBIS 082307
SVSBIS

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

NDC025-082315-
/O.CAN.KBIS.TO.W.0024.000000T0000Z-110708T2330Z/
DUNN ND-
507 PM MDT FRI JUL 8 2011

...THE TORNADO WARNING FOR EAST CENTRAL DUNN COUNTY IS CANCELLED...

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

LAT...LON 4749 10204 4751 10189 4750 10181 4752 10177
      4753 10161 4724 10153 4724 10175 4723 10176
      4722 10209 4723 10211
TIME...MOT...LOC 2305Z 236DEG 30KT 4730 10181

$$

NDC057-082330-
/O.CON.KBIS.TO.W.0024.000000T0000Z-110708T2330Z/
MERCER ND-
607 PM CDT FRI JUL 8 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL MERCER COUNTY
UNTIL 630 PM CDT...

AT 602 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR BEULAH...OR 53 MILES NORTHEAST OF DICKINSON...
MOVING NORTHEAST AT 35 MPH.

THIS DANGEROUS STORM WILL BE NEAR...
  HAZEN AROUND 620 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO TORNADOES...DESTRUCTIVE STRAIGHT LINE WINDS TO 70 MPH 
CAN BE EXPECTED WITH THIS STORM.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.

&&

LAT...LON 4749 10204 4751 10189 4750 10181 4752 10177
      4753 10161 4724 10153 4724 10175 4723 10176
      4722 10209 4723 10211
TIME...MOT...LOC 2305Z 236DEG 30KT 4730 10181

$$

HAMILTON
172 
WWUS53 KBIS 082312
SVSBIS

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

NDC057-082330-
/O.CON.KBIS.TO.W.0024.000000T0000Z-110708T2330Z/
MERCER ND-
612 PM CDT FRI JUL 8 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL MERCER COUNTY
UNTIL 630 PM CDT...

AT 606 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO.  THIS 
TORNADO WAS LOCATED 1 MILE NORTHEAST  OF BEULAH...OR 53 MILES 
NORTHEAST OF DICKINSON...MOVING EAST NORTHEAST AT 25 MPH.

AT 602 PM CDT...LAW ENFORCEMENT REPORTED A TORNADO 1 MILE WEST OF 
BEULAH.  

THE TORNADO WILL BE NEAR...
  HAZEN AROUND 620 PM CDT.

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
STRAIGHT LINE WINDS TO 70 MPH. THIS IS A DANGEROUS STORM. TAKE COVER 
NOW.

LAT...LON 4749 10204 4751 10189 4750 10181 4752 10177
      4753 10161 4724 10153 4724 10175 4723 10176
      4722 10209 4723 10211
TIME...MOT...LOC 2309Z 249DEG 23KT 4725 10178

$$

HAMILTON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 1:29 PM MDTTornado WarningBISGolden Valley31 min
Jul 8, 1:51 PM MDTSevere Thunderstorm WarningBISGolden Valley, McKenzie39 min
Jul 8, 2:19 PM MDTAreal Flood AdvisoryBISBurke, Mountrail, Renville, Ward3 hr
Jul 8, 2:29 PM MDTSevere Thunderstorm WarningBISBurke, Mountrail, Renville, Ward40 min
Jul 8, 2:35 PM MDTSevere Thunderstorm WarningBISGrant55 min
Jul 8, 2:39 PM MDTSevere Thunderstorm WarningBISBillings, Golden Valley66 min
Jul 8, 3:00 PM MDTAreal Flood AdvisoryBISBillings, Dunn, Stark5 hr
Jul 8, 3:12 PM MDTSevere Thunderstorm WarningBISDunn63 min
Jul 8, 3:21 PM MDTSevere Thunderstorm WarningBISBillings, Stark24 min
Jul 8, 3:26 PM MDTSevere Thunderstorm WarningBISGrant, Morton64 min
Jul 8, 3:30 PM MDTSevere Thunderstorm WarningBISGrant, Morton60 min
Jul 8, 3:39 PM MDTAreal Flood AdvisoryBISBurke, Divide, Williams3 hr
Jul 8, 4:15 PM MDTTornado WarningBISFoster, Kidder, Stutsman, Wells30 min
Jul 8, 4:18 PM MDTTornado WarningBISGrant, Morton42 min
Jul 8, 4:19 PM MDTSevere Thunderstorm WarningBISDunn, McLean, Mercer14 min
Jul 8, 4:22 PM MDTTornado WarningBISDunn, Mercer23 min
Jul 8, 4:44 PM MDTTornado WarningBISStutsman31 min
Jul 8, 4:53 PM MDTSevere Thunderstorm WarningBISBurleigh, Emmons, Morton, Sioux52 min
Jul 8, 5:15 PM MDTSevere Thunderstorm WarningBISStutsman31 min
Jul 8, 5:21 PM MDTTornado WarningBISEmmons, Morton, Sioux24 min
Jul 8, 5:21 PM MDTTornado WarningBISMcLean, Mercer, Oliver39 min
Jul 8, 5:42 PM MDTTornado WarningBISStutsman33 min
Jul 8, 5:45 PM MDTTornado WarningBISEmmons, Morton, Sioux45 min
Jul 8, 5:52 PM MDTAreal Flood AdvisoryBISStutsman6 hr
Jul 8, 5:59 PM MDTSevere 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.