Alert archive / North Dakota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 95, NWS Bismarck, ND

July 8, 2011Dickey County, LaMoure County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 8, 2011, 10:30 PM CDT for Dickey County, LaMoure County, North Dakota. It was in force for 60 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, 10:30 PM CDT (03:30 UTC)
Expired: Jul 8, 2011, 11:30 PM CDT
In force: 60 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Dickey County, ND, LaMoure County, ND

The radar

The Aberdeen radar (KABR), 84 km from the middle of the area, began a volume at 03:33 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 8, 2:32 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 3.5 hours before the alert went out and 145 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: 975 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1645 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

390 
WUUS53 KBIS 090330
SVRBIS
NDC021-045-090430-
/O.NEW.KBIS.SV.W.0095.110709T0330Z-110709T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
1030 PM CDT FRI JUL 8 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DICKEY COUNTY IN SOUTHEAST NORTH DAKOTA...
  LAMOURE COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 1130 PM CDT

* AT 1029 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR KULM...OR 42 MILES
  SOUTH OF JAMESTOWN...AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JUD...FORBES...MERRICOURT...EDGELEY...MONANGO...ELLENDALE...
  BERLIN...FULLERTON...DICKEY...GRAND RAPIDS...LA MOURE...GUELPH...
  LUDDEN...GLOVER...OAKES AND VERONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...TAKE SHELTER IN A STURDY
BUILDING...AND STAY AWAY FROM WINDOWS.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SATURDAY MORNING
FOR SOUTHEASTERN NORTH DAKOTA.

LAT...LON 4593 9801 4594 9900 4606 9902 4628 9900
      4629 9902 4653 9903 4663 9804 4644 9802
      4630 9803 4628 9800 4616 9799 4594 9799
TIME...MOT...LOC 0330Z 263DEG 33KT 4632 9891
WIND...HAIL 70MPH <.75IN

$$

HAMILTON

3 follow-up statements

767 
WWUS53 KBIS 090352
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1052 PM CDT FRI JUL 8 2011

NDC021-045-090430-
/O.CON.KBIS.SV.W.0095.000000T0000Z-110709T0430Z/
DICKEY ND-LAMOURE ND-
1052 PM CDT FRI JUL 8 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR LAMOURE AND
DICKEY COUNTIES UNTIL 1130 PM CDT...

AT 1047 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH.  THIS STORM WAS LOCATED NEAR EDGELEY...OR 39 MILES SOUTH
OF JAMESTOWN...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  ELLENDALE...BERLIN...FULLERTON...DICKEY...GRAND RAPIDS...LA
  MOURE...GUELPH...LUDDEN...GLOVER...OAKES AND VERONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

VERY HEAVY RAIN IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4593 9801 4594 9900 4606 9902 4628 9900
      4629 9902 4653 9903 4663 9804 4644 9802
      4630 9803 4628 9800 4616 9799 4594 9799
TIME...MOT...LOC 0352Z 263DEG 33KT 4634 9862
WIND...HAIL 70MPH <.75IN

$$

HAMILTON

720 
WWUS53 KBIS 090416
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1116 PM CDT FRI JUL 8 2011

NDC021-045-090430-
/O.CON.KBIS.SV.W.0095.000000T0000Z-110709T0430Z/
DICKEY ND-LAMOURE ND-
1116 PM CDT FRI JUL 8 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR LAMOURE AND
DICKEY COUNTIES UNTIL 1130 PM CDT...

AT 1113 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MARION TO ELLENDALE...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  FULLERTON...LA MOURE...GLOVER...VERONA...GUELPH...OAKES AND LUDDEN.

ANOTHER STRONG TO SEVERE THUNDERSTORM WAS LOCATED NEAR FORBES. THIS 
STORM WAS ALSO MOVING EAST AT 40 MPH. WINDS TO 70 MPH ARE POSSIBLE 
WITH THIS STORM ALSO...AS IT MOVES TOWARD ELLENDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

VERY HEAVY RAIN IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4593 9801 4594 9900 4606 9902 4628 9900
      4629 9902 4653 9903 4663 9804 4644 9802
      4630 9803 4628 9800 4616 9799 4594 9799
TIME...MOT...LOC 0415Z 263DEG 33KT 4660 9822 4598 9853
WIND...HAIL 70MPH <.75IN

$$

HAMILTON

277 
WWUS53 KBIS 090430
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1130 PM CDT FRI JUL 8 2011

NDC021-045-090440-
/O.EXP.KBIS.SV.W.0095.000000T0000Z-110709T0430Z/
DICKEY ND-LAMOURE ND-
1130 PM CDT FRI JUL 8 2011

...THE SEVERE THUNDERSTORM WARNING FOR LAMOURE AND DICKEY COUNTIES
HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THESE
THUNDERSTORMS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT. 

LAT...LON 4593 9801 4594 9900 4606 9902 4628 9900
      4629 9902 4653 9903 4663 9804 4644 9802
      4630 9803 4628 9800 4616 9799 4594 9799
TIME...MOT...LOC 0430Z 263DEG 33KT 4662 9802 4600 9833

$$

HAMILTON

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 7:34 PM CDT, 2 hours 56 minutes earlier.

Area forecast discussion, Jul 8, 7:34 PM CDT, 2 hours 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
734 PM CDT FRI JUL 8 2011

.UPDATE...REMOVED SOME COUNTIES IN TORNADO WATCH...ADJUSTED
WEATHER AND POPS.

&&

.DISCUSSION...STORMS HAVE CLEARED FAR WESTERN COUNTIES AND HAVE
THEREFORE DROPPED THE TORNADO WATCH THERE. ALSO ADJUSTED POPS AND
WEATHER FOR DECREASING TREND OUT WEST. OTHERWISE SEVERE WEATHER
THREAT CONTINUES OVER REMAINDER OF COUNTY WARNING AREA WITH
MULTIPLE WARNINGS STILL IN EFFECT. ANOTHER CLUSTER OF STORMS IS
LOCATED IN SOUTHEASTERN MONTANA...BUT EXPECTING THIS TO DIMINISH
AS IT APPROACHES SOUTHWEST ND WITH LOSS OF DAYTIME HEATING.
&&

.AVIATION...CONDITIONS IMPROVING AT KDIK AND KISN...WITH REDUCED
VIS AND CIGS AT KMOT AND KBIS AS BACK EDGE OF STORMS MOVE THROUGH.
KJMS WILL BE NEXT TO EXPERIENCE THIS WITH POSSIBLY A GREATER WIND
THREAT AS STORMS MERGE INTO A CONVECTIVE LINE. CONDITIONS WILL
IMPROVE AT THESE LOCATIONS OVERNIGHT AS STORMS MOVE OUT OF REGION.
WILL HAVE TO MONITOR FOR FOG AT SOME LOCATIONS LATE TONIGHT ALSO.
&&

.BIS WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

UPDATE...JNS
AVIATION...JNS

Hazardous weather outlook, Jul 8, 3:19 PM CDT, 7 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
319 PM CDT FRI JUL 8 2011

NDZ001>005-009>013-017>023-031>036-040>047-050-092030-
DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD-
MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-OLIVER-MCLEAN-SHERIDAN-WELLS-
GOLDEN VALLEY-BILLINGS-STARK-MORTON-BURLEIGH-KIDDER-SLOPE-
HETTINGER-GRANT-BOWMAN-ADAMS-SIOUX-EMMONS-LOGAN-MCINTOSH-
319 PM CDT FRI JUL 8 2011 /219 PM MDT FRI JUL 8 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
NORTH DAKOTA...NORTHWEST NORTH DAKOTA...SOUTH CENTRAL NORTH
DAKOTA...SOUTHEAST NORTH DAKOTA AND SOUTHWEST NORTH DAKOTA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

TORNADO WATCH 611 IS IN EFFECT FOR THE AREA. PLEASE VISIT
WWW.WEATHER.GOV/BIS FOR MORE DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A CHANCE FOR STRONG TO SEVERE THUNDERSTORMS ACROSS THE
JAMES RIVER VALLEY SATURDAY. THERE IS A SLIGHT CHANCE OF
THUNDERSTORMS ACROSS MUCH OF WESTERN AND CENTRAL NORTH DAKOTA
MONDAY NIGHT THROUGH THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS HAVE BEEN ACTIVATED. PLEASE CALL THE NATIONAL WEATHER
SERVICE AT 701-250-4452 WITH REPORTS OF SEVERE WEATHER.

NDZ025-037-048-051-092030-
FOSTER-STUTSMAN-LA MOURE-DICKEY-
319 PM CDT FRI JUL 8 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST NORTH
DAKOTA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

WIDESPREAD THUNDERSTORMS WILL DEVELOP DURING THE EVENING HOURS.
SOME OF THESE STORMS MAY BECOME SEVERE...WITH DAMAGING
WINDS...LARGE HAIL...AND HEAVY RAINFALL BEING THE PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A CHANCE FOR STRONG TO SEVERE THUNDERSTORMS ACROSS THE
JAMES RIVER VALLEY SATURDAY. THERE IS A SLIGHT CHANCE OF
THUNDERSTORMS ACROSS MUCH OF WESTERN AND CENTRAL NORTH DAKOTA
MONDAY NIGHT THROUGH THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS HAVE BEEN ACTIVATED. PLEASE CALL THE NATIONAL WEATHER
SERVICE AT 701-250-4452 WITH REPORTS OF SEVERE WEATHER.

TM

In the hours before

Local storm report, Jul 8, 8:42 PM CDT, 1 hour 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
842 PM CDT FRI JUL 08 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0835 PM     TORNADO          W NAPOLEON              46.51N 99.77W
07/08/2011                   LOGAN              ND   PUBLIC

            PUBLIC REPORTED A TORNADO ON THE GROUND. RELAYED VIA
            STATE RADIO.

&&

TM

Local storm report, Jul 8, 9:14 PM CDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
914 PM CDT FRI JUL 08 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 PM     TSTM WND GST     4 NW HAZELTON           46.53N 100.34W
07/08/2011  E60 MPH          EMMONS             ND   CO-OP OBSERVER

&&

SWICHE

Special weather statement, Jul 8, 9:17 PM CDT, 1 hour 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
917 PM CDT FRI JUL 8 2011

NDZ005-013-090300-
PIERCE ND-ROLETTE ND-
917 PM CDT FRI JUL 8 2011

...SPECIAL WEATHER STATEMENT FOR ROLETTE AND NORTHERN PIERCE COUNTIES
UNTIL 1000 PM CDT...

AT 916 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 23 MILES WEST OF LEEDS...OR 38 MILES SOUTHEAST OF
BOTTINEAU...MOVING NORTHEAST AT 20 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
VERY HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  WOLFORD...
  NANSON...
  THORNE...
  ROLETTE...
  MYLO...
  AGATE...
  SHELL VALLEY...
  BELCOURT...
  ROLLA...
  ST. JOHN...

THIS STORM MAY INTENSIFY....AND A TORNADO WATCH IS IN EFFECT FOR THIS
AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS
LOCAL CABLE TV OUTLETS....FOR ADDITIONAL INFORMATION AND POSSIBLE
WARNINGS FROM THE NATIONAL WEATHER SERVICE.

KINNEY

Local storm report, Jul 8, 9:28 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
928 PM CDT FRI JUL 08 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     HEAVY RAIN       10 N NAPOLEON           46.65N 99.77W
07/08/2011  M4.60 INCH       KIDDER             ND   TRAINED SPOTTER

            SINCE 7 AM CDT.

&&

SWICHE

Local storm report, Jul 8, 10:08 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1008 PM CDT FRI JUL 08 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1002 PM     TSTM WND DMG     WISHEK                  46.26N 99.56W
07/08/2011                   MCINTOSH           ND   LAW ENFORCEMENT

            LARGE TREES AND NUMEROUS BRANCHES BLOWN DOWN IN TOWN.

&&

RK

Local storm report, Jul 8, 10:22 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1022 PM CDT FRI JUL 08 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1020 PM     HEAVY RAIN       4 W BANTRY              48.50N 100.70W
07/08/2011  M2.50 INCH       MCHENRY            ND   MESONET

            OCCURRED WITHIN THE LAST 2 HOURS

&&

JVINING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 7:15 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	60 min
Jul 8, 7:25 PM CDT	Tornado Warning	BIS	Burleigh, Emmons, Kidder	50 min
Jul 8, 7:31 PM CDT	Areal Flood Warning	BIS	Burke, Divide, Mountrail, Ward	6 hr
Jul 8, 7:42 PM CDT	Flash Flood Warning	BIS	Stutsman	6 hr
Jul 8, 8:06 PM CDT	Areal Flood Advisory	BIS	Burleigh, Emmons, Grant, Morton, Sioux	11 hr
Jul 8, 8:16 PM CDT	Tornado Warning	BIS	Burleigh, Emmons, Kidder, Logan	29 min
Jul 8, 8:42 PM CDT	Tornado Warning	BIS	Kidder, Logan, Stutsman	48 min
Jul 8, 8:51 PM CDT	River Flood Warning	BIS	Stutsman	4 days
Jul 8, 8:57 PM CDT	Tornado Warning	BIS	Emmons, Logan, McIntosh	36 min
Jul 8, 9:20 PM CDT	Areal Flood Advisory	BIS	Emmons, Kidder, Logan, McIntosh, Sioux, Stutsman	6 hr
Jul 8, 9:30 PM CDT	Tornado Warning	BIS	Kidder, Logan, Stutsman	45 min
Jul 8, 9:52 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure, Logan, McIntosh	53 min
Jul 8, 11:09 PM CDT	Areal Flood Advisory	BIS	Dickey, LaMoure	11 hr
Jul 9, 1:41 AM CDT	Areal Flood Warning	BIS	Stutsman	12 hr
Jul 9, 2:01 AM CDT	Areal Flood Advisory	BIS	McKenzie, Williams	5 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2011 Every severe thunderstorm warning 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.