Alert archive / North Dakota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 308, NWS Bismarck, ND

August 11, 2007Burleigh County, Morton County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 11, 2007, 2:44 AM CDT for Burleigh County, Morton County, North Dakota. It was in force for 61 min. 1 report 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: Aug 11, 2007, 2:44 AM CDT (07:44 UTC)
Expired: Aug 11, 2007, 3:45 AM CDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

Counties Burleigh County, ND, Morton County, ND

The radar

The Bismarck radar (KBIS), 24 km from the middle of the area, began a volume at 07:46 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

Time	Report	Where	Remark
Aug 11, 2:54 AM CDT	HAIL 1	Bismarck, ND	MANY PENNY AND NICKEL SIZED HAIL AS WELL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 10 minutes after it went out.

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
Aug 10, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 7.7 hours before the alert went out and 28 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: 1851 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 1543 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 267 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KBIS 110745
SVRBIS
NDC015-059-110845-
/O.NEW.KBIS.SV.W.0308.070811T0744Z-070811T0845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
244 AM CDT SAT AUG 11 2007

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BURLEIGH COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  THIS INCLUDES THE CITY OF BISMARCK...
  EASTERN MORTON COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 345 AM CDT

* AT 244 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR BISMARCK...AND MOVING EAST AT 30 MPH. THIS
  STORM PRODUCED HAIL UP TO THE SIZE OF QUARTERS IN THE CITY OF
  BISMARCK.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LINCOLN AROUND 250 AM CDT...
  MENOKEN AROUND 310 AM CDT...
  MCKENZIE AROUND 320 AM CDT...
  STERLING AROUND 330 AM CDT...

A SECOND SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL WAS LOCATED NEAR NEW SALEM...AND MOVING EAST AT 30 MPH. THIS
STORM WILL IMPACT SWEET BRIAR LAKE AND JUDSON...AND WILL ALSO
IMPACT BISMARCK AND MANDAN BEFORE 345 AM CDT.

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR PATH...PREPARE
IMMEDIATELY FOR LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND
AWAY FROM WINDOWS.

LAT...LON 4697 10167 4653 10127 4666 10012 4733 10044
      4699 10089

$$

CJS/HW

2 follow-up statements

000 
WWUS53 KBIS 110808
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
307 AM CDT SAT AUG 11 2007

NDC015-059-110845-
/O.CON.KBIS.SV.W.0308.000000T0000Z-070811T0845Z/
BURLEIGH ND-MORTON ND-
307 AM CDT SAT AUG 11 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR EASTERN MORTON AND BURLEIGH COUNTIES...

AT 307 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED NEAR MANDAN...OR ABOUT 7 MILES WEST OF
BISMARCK...MOVING EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BISMARCK AROUND 315 AM CDT...
  LINCOLN AROUND 320 AM CDT...
  MENOKEN AROUND 335 AM CDT...
  MCKENZIE AROUND 345 AM CDT...

A SECOND SEVERE THUNDERSTORM WAS LOCATED NEAR STERLING...AND MOVING
EAST AT 30 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND WILL BE NEAR DRISCOLL AROUND 320 AM CDT.

IF YOU ARE IN THE PATH OF THESE STORMS...STAY INDOORS AND MOVE
AWAY FROM WINDOWS.

LAT...LON 4697 10167 4653 10127 4666 10012 4733 10044
      4699 10089

$$

CJS/HW

000 
WWUS53 KBIS 110846
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
346 AM CDT SAT AUG 11 2007

NDC015-059-110856-
/O.EXP.KBIS.SV.W.0308.000000T0000Z-070811T0845Z/
BURLEIGH ND-MORTON ND-
346 AM CDT SAT AUG 11 2007

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MORTON AND BURLEIGH
COUNTIES EXPIRED AT 345 AM CDT...

THE SEVERE THUNDERSTORM HAS MOVED OUT OF THE AREA AND NO LONGER POSES
A SIGNIFICANT THREAT. 

LAT...LON 4697 10167 4653 10127 4666 10012 4733 10044
      4699 10089

$$

CJS/HW

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 Aug 10, 3:00 PM CDT, 11 hours 44 minutes earlier.

Area forecast discussion, Aug 10, 3:00 PM CDT, 11 hours 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
300 PM CDT FRI AUG 10 2007

.SHORT TERM...TONIGHT THROUGH MONDAY NIGHT
WE ARE STILL EXPECTING MORE SEVERE THUNDERSTORMS TO BREAK OUT...AND
THEN PUSH ACROSS OUR CWA OVERNIGHT...PER SPS DISCUSSION. ATTM PRIME
AREA FOR NEW DEVELOPMENT IS ALONG THE MOISTURE CONVERGENCE LINE FROM
JAMESTOWN TO MOBRIDGE. LATER TONIGHT A MCS MAY COME OUT OF MONTANA
AND ACROSS OUR WESTERN AND CENTRAL COUNTIES. A COOLER...DRY AND
BREEZY POST FRONTAL ENVIRONMENT WILL BE IN PLACE SATURDAY. MAJOR
RIDGING WILL THEN RETURN SUNDAY BRINGING A RETURN TO HOTTER WEATHER.
PRECIPITATION OF ANY SIGNIFICANCE IS NOT EXPECTED THROUGH MONDAY.

.LONG TERM...TUESDAY THROUGH FRIDAY NIGHT
MAJOR RIDGING WEST OF THE STATE WILL PERSIST THROUGH THE LONG TERM
FORECAST PERIOD. TO THE OUR NORTHEAST THE HUDSON BAY LOW WILL
STRENGTHEN ENOUGH TO DEPRESS OUR H5 HEIGHTS FROM WHAT THEY WOULD
NORMALLY BE WITH THE EXPECTED PATTERN. THIS WILL KEEP OUR
TEMPERATURES IN THE NORMAL RANGE. I EXPECT GENERALLY DRY WEATHER
WITH THE NORTHWEST FLOW.

&&

.AVIATION...
SEVERE THUNDERSTORMS WILL BE THE MAJOR AVIATION HAZARD THIS EVENING
AND TONIGHT. LATE TONIGHT SOME IFR CEILINGS MAY ALSO DEVELOP IN THE
WAKE OF THE HEAVIER STORMS.

&&

.FIRE...
WILL ISSUE A FIRE WATCH FOR SLOPE AND BOWMAN COUNTIES FOR SATURDAY
AFTERNOON WHERE AFTERNOON RH WILL BE NEAR 20 PERCENT WITH NORTHWEST
WINDS GUSTING TO 30 MPH. BOWMAN AND SLOPE HAVE THE DRIEST FUELS IN MY
CWA.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FOR SATURDAY AFTERNOON FOR NDZ040-043.
&&

RSL

Hazardous weather outlook, Aug 10, 2:39 PM CDT, 12 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
239 PM CDT FRI AUG 10 2007

NDZ001>005-009>013-017>023-025-031>037-041-042-044>048-050-051-
111945-
DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD-
MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-OLIVER-MCLEAN-SHERIDAN-WELLS-
FOSTER-GOLDEN VALLEY-BILLINGS-STARK-MORTON-BURLEIGH-KIDDER-
STUTSMAN-HETTINGER-GRANT-ADAMS-SIOUX-EMMONS-LOGAN-LA MOURE-
MCINTOSH-DICKEY-
239 PM CDT FRI AUG 10 2007 /139 PM MDT FRI AUG 10 2007/

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
SEVERE THUNDERSTORMS WILL INCREASE IN COVERAGE THIS
AFTERNOON...AND THEN CONTINUE WELL INTO TONIGHT. HIGH WINDS..
HAIL AND TORNADOES ARE POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS WILL BE NEEDED FOR THIS AFTERNOONS AND TONIGHTS SEVERE
THUNDERSTORMS.

NDZ040-043-111945-
SLOPE-BOWMAN-
139 PM MDT FRI AUG 10 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT
SEVERE THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON...AND THEN
CONTINUE WELL INTO TONIGHT. HIGH WINDS.. HAIL AND TORNADOES ARE
POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
A FIRE WEATHER WATCH IS IN EFFECT FOR SATURDAY AFTERNOON. AFTERNOON
RH IS EXPECTED TO BE NEAR 20 PERCENT WITH NORTHWEST WINDS GUSTING
TO 30 MPH.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS WILL BE NEEDED FOR THIS AFTERNOONS AND TONIGHTS SEVERE
THUNDERSTORMS.

RSL

In the hours before

Local storm report, Aug 10, 11:16 PM CDT, 3 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1116 PM CDT FRI AUG 10 2007

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

1104 PM     TORNADO          15 SW WILDROSE          48.48N 103.41W
08/10/2007                   WILLIAMS           ND   AIRPLANE PILOT

            REPORT FROM WEATHER MODIFICATION PILOT

&&

PAYD

Local storm report, Aug 10, 11:51 PM CDT, 2 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1151 PM CDT FRI AUG 10 2007

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

1129 PM     TSTM WND GST     CROSBY                  48.91N 103.29W
08/10/2007  E60 MPH          DIVIDE             ND   MESONET

            RAWS REPORTING SITE

1140 PM     TSTM WND GST     TIOGA                   48.39N 102.94W
08/10/2007  E60 MPH          WILLIAMS           ND   BROADCAST MEDIA

            KXMC-TV VIEWER REPORT

&&

VJENSEN

Local storm report, Aug 11, 1:46 AM CDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
146 AM CDT SAT AUG 11 2007

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

1258 AM     HAIL             1 S HEBRON              46.89N 102.04W
08/10/2007  E1.75 INCH       MORTON             ND   TRAINED SPOTTER

0129 AM     HAIL             GLEN ULLIN              46.81N 101.83W
08/10/2007  E0.75 INCH       MORTON             ND   PUBLIC

            ALONG WITH RAINFALL MEASURED AS 0.70 INCHES

&&

VJENSEN

Local storm report, Aug 11, 2:08 AM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
208 AM CDT SAT AUG 11 2007

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

0200 AM     HAIL             HEBRON                  46.90N 102.04W
08/11/2007  E0.88 INCH       MORTON             ND   TRAINED SPOTTER

0202 AM     HAIL             BISMARCK                46.81N 100.77W
08/11/2007  E0.88 INCH       BURLEIGH           ND   BROADCAST MEDIA

            KFYR-TV REPORTS DIME SIZE HAIL AS WELL

0205 AM     HAIL             BISMARCK                46.81N 100.77W
08/11/2007  E1.00 INCH       BURLEIGH           ND   LAW ENFORCEMENT

            NICKEL SIZED HAIL AS WELL

&&

VJENSEN

Local storm report, Aug 11, 2:13 AM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
213 AM CDT SAT AUG 11 2007

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

0105 AM     HAIL             5 W NEW SALEM           46.84N 101.52W
08/11/2007  E1.00 INCH       MORTON             ND   BROADCAST MEDIA

&&

VJENSEN

Local storm report, Aug 11, 2:20 AM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
220 AM CDT SAT AUG 11 2007

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

0205 AM     HAIL             HEBRON                  46.90N 102.04W
08/11/2007  E1.00 INCH       MORTON             ND   TRAINED SPOTTER

            REPORTED 50 TO 55 MPH WINDS AS WELL

&&

VJENSEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 7:30 PM CDT	Tornado Warning	BIS	Emmons, Sioux	30 min
Aug 10, 7:38 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Stark	52 min
Aug 10, 8:06 PM CDT	Severe Thunderstorm Warning	BIS	Billings, McKenzie	54 min
Aug 10, 8:26 PM CDT	Severe Thunderstorm Warning	BIS	McIntosh	30 min
Aug 10, 8:40 PM CDT	Tornado Warning	BIS	Dunn	35 min
Aug 10, 9:50 PM CDT	Severe Thunderstorm Warning	BIS	Williams	40 min
Aug 10, 9:59 PM CDT	Severe Thunderstorm Warning	BIS	Divide, McKenzie, Williams	61 min
Aug 10, 10:17 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail	22 min
Aug 10, 10:42 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	33 min
Aug 10, 11:05 PM CDT	Tornado Warning	BIS	Burke, Mountrail, Williams	25 min
Aug 10, 11:11 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Divide, McKenzie, Mountrail, Williams	64 min
Aug 11, 12:31 AM CDT	Severe Thunderstorm Warning	BIS	Morton	59 min
Aug 11, 12:59 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, Stark	61 min
Aug 11, 1:02 AM CDT	High Wind Warning	BIS	Bottineau, McHenry, Pierce, Renville, Rolette	3 hr
Aug 11, 1:28 AM CDT	Severe Thunderstorm Warning	BIS	Morton	62 min
Aug 11, 1:47 AM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton	58 min
Aug 11, 2:00 AM CDT	Severe Thunderstorm Warning	BIS	Mercer, Morton	60 min
Aug 11, 2:19 AM CDT	Severe Thunderstorm Warning	BIS	Dickey, McIntosh	56 min
Aug 11, 3:14 AM CDT	Severe Thunderstorm Warning	BIS	Kidder	61 min
Aug 11, 3:22 AM CDT	Severe Thunderstorm Warning	BIS	Dickey	53 min
Aug 11, 3:25 AM CDT	Tornado Warning	BIS	Kidder	35 min
Aug 11, 3:55 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	65 min
Aug 11, 4:10 AM CDT	Severe Thunderstorm Warning	BIS	Logan	65 min
Aug 11, 4:20 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure	55 min
Aug 11, 4:33 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	57 min
Aug 11, 3:57 PM CDT	Fire Weather Watch	BIS	Billings, Bowman, Golden Valley, Slope	13 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2007 Every severe thunderstorm warning in 2007

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.