Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 52 kts.
State MONTANA
County/Area POWELL
WFO MSO
Report Source Trained Spotter
NCDC Data Source CSV
Begin Date 2010-06-29 14:50:00.0 MST-7
Begin Location 0N OVANDO
Begin Lat/Lon 47.02/-113.13
End Date 2010-06-29 14:58:00.0 MST-7
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 The atmosphere had warmed and dried from the first 90 degree day of the summer on Monday June 28. By Tuesday June 29, very unstable air associated with increasing southwesterly flow and moisture aloft provided the ingredients for a severe weather event. A strong shortwave associated with an approaching jet stream approached the area. The first severe storm developed Tuesday afternoon over Ovando in Powell County with wind gusts up to 60 mph blowing trees down. By early evening, the transition had already taken place for large hail producers as large hail was noted first near Condon. Two severe storms passed near Missoula and Lolo at 940 PM and again at 11 PM with large hail and wind. The most significant severe weather occurred between Stevensville and Florence, as a line of storms produced outflow damaging winds estimated at 88 to 100 mph between 1045 PM to 1130 PM.
Event Narrative A trained spotter reported estimated wind gusts of 60 MPH. Smaller tree branches were down with the largest branch estimated at four inches in diameter.


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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 0.00K 0.00K
OVANDO POWELL CO. MT 06/29/2010 14:50 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
OVANDO POWELL CO. MT 06/29/2010 14:50 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
OVANDO POWELL CO. MT 06/29/2010 14:50 MST-7 Hail 0.88 in. 0 0 0.00K 0.00K
CONDON USFS ARPT MISSOULA CO. MT 06/29/2010 17:20 MST-7 Hail 1.25 in. 0 0 0.00K 0.00K
CONDON USFS ARPT MISSOULA CO. MT 06/29/2010 17:25 MST-7 Hail 1.00 in. 0 0 0.00K 0.00K
(MSO)MISSOULA INTL A MISSOULA CO. MT 06/29/2010 20:40 MST-7 Hail 1.00 in. 0 0 0.00K 0.00K
CARLTON MISSOULA CO. MT 06/29/2010 20:40 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
(MSO)MISSOULA INTL A MISSOULA CO. MT 06/29/2010 20:50 MST-7 Hail 1.00 in. 0 0 0.00K 0.00K
SEELEY LAKE ARPT MISSOULA CO. MT 06/29/2010 21:23 MST-7 Hail 1.00 in. 0 0 0.00K 0.00K
FLORENCE RAVALLI CO. MT 06/29/2010 21:45 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
FLORENCE RAVALLI CO. MT 06/29/2010 22:00 MST-7 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
Totals: 0 0 0.00K 0.00K