Storm Events Database

Event Details

Event Tornado
-- Scale EF0
-- Length 1 Miles
-- Width 40 Yards
State NORTH DAKOTA
County/Area WILLIAMS
WFO BIS
Report Source Airplane Pilot
NCDC Data Source CSV
Begin Date 2007-08-10 22:04:00.0 CST-6
Begin Location 8SSE ALAMO
Begin Lat/Lon 48.48/-103.41
End Date 2007-08-10 22:15:00.0 CST-6
End Location 9SSE ALAMO
End Lat/Lon 48.47/-103.4
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative A complex and lengthy severe weather event occurred over west and central North Dakota starting in the morning of Friday, August 10th, and lasting into the early morning hours of Saturday, August 11th.
Scattered severe thunderstorms continuously redeveloped over the area along a surface trough that was oriented from southwest to northeast, from around Dickinson, to near Grand Forks. Convection was also supported by a favorable overrunning situation when the southerly low level jet intensified and persisted. Numerous warnings were issued, and numerous severe weather reports were received.
Severe Thunderstorm Watch 582 was issued due to ongoing convection and in anticipation of future development/intensification across south central North Dakota.
Late in the afternoon on Friday, Severe Thunderstorm Watch 584 was issued for all of western and much of central North Dakota. Storms were expected to reintensify during the evening and spread east as large scale upper level support and a cold front approached.
Event Narrative This tornado was sighted by a weather modification pilot. The tornado hit no structures.


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 167.00K 100.00K
ROLETTE ROLETTE CO. ND 08/10/2007 07:46 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
GOODRICH SHERIDAN CO. ND 08/10/2007 09:42 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
BUTTE MCLEAN CO. ND 08/10/2007 10:04 CST-6 Hail 1.00 in. 0 0 0.00K 50.00K
RIVERDALE MCLEAN CO. ND 08/10/2007 10:04 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
HARVEY WELLS CO. ND 08/10/2007 10:24 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
RIVERDALE MCLEAN CO. ND 08/10/2007 10:30 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
BALFOUR MCHENRY CO. ND 08/10/2007 11:00 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
RIVERDALE MCLEAN CO. ND 08/10/2007 11:17 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
BUTTE MCLEAN CO. ND 08/10/2007 11:24 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
RUGBY PIERCE CO. ND 08/10/2007 11:30 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
DRAKE MCHENRY CO. ND 08/10/2007 11:45 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
NAPOLEON LOGAN CO. ND 08/10/2007 15:45 CST-6 Hail 2.50 in. 0 0 60.00K 0.00K
FT YATES SIOUX CO. ND 08/10/2007 16:30 MST-7 Hail 0.88 in. 0 0 0.00K 0.00K
FT YATES SIOUX CO. ND 08/10/2007 16:51 MST-7 Hail 1.50 in. 0 0 0.00K 0.00K
SELFRIDGE SIOUX CO. ND 08/10/2007 17:03 MST-7 Hail 1.75 in. 0 0 0.00K 0.00K
LINTON EMMONS CO. ND 08/10/2007 17:53 CST-6 Funnel Cloud 0 0 0.00K 0.00K
RAY WILLIAMS CO. ND 08/10/2007 21:10 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
CROSBY DIVIDE CO. ND 08/10/2007 21:45 CST-6 Thunderstorm Wind 78 kts. EG 0 0 65.00K 0.00K
ALAMO WILLIAMS CO. ND 08/10/2007 22:04 CST-6 Tornado EF0 0 0 0.00K 0.00K
MC GREGOR WILLIAMS CO. ND 08/10/2007 22:30 CST-6 Thunderstorm Wind 56 kts. EG 0 0 2.00K 0.00K
NOONAN DIVIDE CO. ND 08/10/2007 22:30 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
TIOGA WILLIAMS CO. ND 08/10/2007 22:40 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
HEBRON MORTON CO. ND 08/10/2007 23:58 CST-6 Hail 2.75 in. 0 0 40.00K 40.00K
NEW SALEM MORTON CO. ND 08/11/2007 00:48 CST-6 Thunderstorm Wind 64 kts. MG 0 0 0.00K 0.00K
HEBRON MORTON CO. ND 08/11/2007 01:00 CST-6 Hail 1.00 in. 0 0 0.00K 10.00K
BISMARCK BURLEIGH CO. ND 08/11/2007 01:01 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
(BIS)BISMARCK MUNI A BURLEIGH CO. ND 08/11/2007 01:35 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
BISMARCK BURLEIGH CO. ND 08/11/2007 01:54 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
STEELE KIDDER CO. ND 08/11/2007 02:38 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
Totals: 0 0 167.00K 100.00K