Storm Events Database

Event Details

Event Hail
Magnitude 0.88 in.
State NORTH DAKOTA
County/Area WILLIAMS
WFO BIS
Begin Date 07/12/2010 23:51:00 CST-6
Begin Range 4
Begin Azimuth NNE
Begin Location (ISN)SLOULIN FLD WIL
Begin Lat/Lon 48.24/-103.63
End Date 07/12/2010 23:53:00 CST-6
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 In the mid afternoon hours of Monday, July 12th, Severe Thunderstorm Watch number 461 was issued for far western North Dakota. This was in anticipation of thunderstorms developing ahead of a potent short wave trough advecting northeast across the central Rockies and into the Northern High Plains region. Ahead of this feature, strong moisture advection combined with steep lapse rates and strengthening vertical shear parameters to create a favorable atmosphere for organized storms.

Severe Thunderstorm Watch number 463 was issued later Monday evening to include all of west and portions of central North Dakota, as ongoing severe thunderstorms over western North Dakota were expected to continue and advect to the east along and ahead of a frontal boundary stretched across the western Dakotas.

Several severe thunderstorm and tornado warnings were issued. Several reports of large hail, two reports of severe thunderstorm winds, and one confirmed tornado occurred during this episode.
Event Narrative


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 2.00K 0.00K
MANITOU MOUNTRAIL CO. ND 07/12/2010 19:16 CST-6 Tornado EF0 0 0 0.00K 0.00K
ROSS MOUNTRAIL CO. ND 07/12/2010 19:30 CST-6 Funnel Cloud 0 0 0.00K 0.00K
DICKINSON STARK CO. ND 07/12/2010 19:45 MST-7 Hail 1.00 in. 0 0 0.00K 0.00K
DICKINSON STARK CO. ND 07/12/2010 19:50 MST-7 Hail 1.25 in. 0 0 0.00K 0.00K
STANLEY MOUNTRAIL CO. ND 07/12/2010 20:21 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
PALERMO MOUNTRAIL CO. ND 07/12/2010 20:23 CST-6 Hail 2.00 in. 0 0 0.00K 0.00K
BUFFALO SPGS BOWMAN CO. ND 07/12/2010 22:15 MST-7 Hail 0.88 in. 0 0 0.00K 0.00K
WILLISTON WILLIAMS CO. ND 07/12/2010 23:36 CST-6 Thunderstorm Wind 55 kts. MG 0 0 0.00K 0.00K
(ISN)SLOULIN FLD WIL WILLIAMS CO. ND 07/12/2010 23:51 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
ALAMO WILLIAMS CO. ND 07/13/2010 01:10 CST-6 Thunderstorm Wind 56 kts. EG 0 0 2.00K 0.00K
Totals: 0 0 2.00K 0.00K