Storm Events Database

Event Details

Event Hail
Magnitude 1.00 in.
State NORTH DAKOTA
County/Area WILLIAMS
WFO BIS
Begin Date 07/29/2010 17:47:00 CST-6
Begin Range 0
Begin Azimuth W
Begin Location WILLISTON
Begin Lat/Lon 48.15/-103.63
End Date 07/29/2010 17:54:00 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 Severe Thunderstorm Watch number 550 was issued for much of west and north central North Dakota in the late afternoon hours of Thursday, July 29th. This was in anticipation of strong to severe thunderstorms over northeast Montana advecting east into western North Dakota Thursday evening along a trough of surface low pressure, with intensity sustained by an incoming mid level disturbance.

Isolated severe thunderstorms initially moved into northwest North Dakota early Thursday evening, with convective activity transitioning into linear segments during the mid to late evening hours before dissipating.

Multiple severe thunderstorm warnings were issued. Several reports of large hail and multiple reports of severe thunderstorm winds were received 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 0 178.00K 0.00K
WILLISTON WILLIAMS CO. ND 07/29/2010 17:47 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
EPPING WILLIAMS CO. ND 07/29/2010 18:15 CST-6 Hail 2.50 in. 0 0 50.00K 0.00K
ALEXANDER MCKENZIE CO. ND 07/29/2010 18:19 MST-7 Thunderstorm Wind 61 kts. EG 0 0 3.00K 0.00K
WILLISTON WILLIAMS CO. ND 07/29/2010 19:10 CST-6 Thunderstorm Wind 53 kts. MG 0 0 0.00K 0.00K
GRASSY BUTTE MCKENZIE CO. ND 07/29/2010 19:20 MST-7 Thunderstorm Wind 61 kts. EG 0 0 30.00K 0.00K
WILLISTON WILLIAMS CO. ND 07/29/2010 19:30 CST-6 Lightning 0 0 25.00K 0.00K
GRASSY BUTTE MCKENZIE CO. ND 07/29/2010 19:30 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
HALLIDAY DUNN CO. ND 07/29/2010 20:27 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
ROSEGLEN MCLEAN CO. ND 07/29/2010 21:06 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
DICKINSON STARK CO. ND 07/29/2010 21:13 MST-7 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
GRANO RENVILLE CO. ND 07/29/2010 21:15 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
NORMA RENVILLE CO. ND 07/29/2010 21:16 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
BEULAH MERCER CO. ND 07/29/2010 21:54 CST-6 Thunderstorm Wind 52 kts. EG 0 0 70.00K 0.00K
GARRISON MCLEAN CO. ND 07/29/2010 21:55 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
GARRISON MCLEAN CO. ND 07/29/2010 21:57 CST-6 Thunderstorm Wind 56 kts. MG 0 0 0.00K 0.00K
HAZEN MERCER CO. ND 07/29/2010 22:09 CST-6 Thunderstorm Wind 56 kts. MG 0 0 0.00K 0.00K
HEBRON MORTON CO. ND 07/29/2010 22:14 CST-6 Thunderstorm Wind 61 kts. EG 0 0 0.00K 0.00K
Totals: 0 0 178.00K 0.00K