Storm Events Database
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Storm Events Database
Event Details:
| Event | Tornado |
| -- Scale | EF0 |
| -- Length | 1 Miles |
| -- Width | 50 Yards |
| State | MONTANA |
| County/Area | FALLON |
| WFO | BYZ |
| Report Source | Storm Chaser |
| NCEI Data Source | CSV |
| Begin Date | 2015-06-21 15:37 MST-7 |
| Begin Location | 2NW WILLARD |
| Begin Lat/Lon | 46.22/-104.4 |
| End Date | 2015-06-21 15:42 MST-7 |
| End Location | 2NW WILLARD |
| End Lat/Lon | 46.22/-104.4 |
| 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 strong upper level wave moved across Eastern Montana during the afternoon and evening hours of the 16th. An axis of instability combined with strong and low, deep layer shear and high dewpoints resulted in a very unstable environment. This resulted in several supercell thunderstorms that produced large hail, damaging winds and one confirmed tornado across the eastern portions of the Billings Forecast Area. |
| Event Narrative | A weak tornado was reported between Baker and Ekalaka during the late afternoon hours on the 21st. The tornado was on the ground for around a minute. It began roping out about 4 minutes later and its circulation appeared to fully cut off around 90 seconds after that. |
Event Map:
Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.
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 | |||||||
| ISMAY | CUSTER CO. | MT | 06/21/2015 | 14:45 | MST-7 | Hail | 1.75 in. | 0 | 0 | 0.00K | 0.00K |
| KNOWLTON | CUSTER CO. | MT | 06/21/2015 | 14:55 | MST-7 | Thunderstorm Wind | 61 kts. MG | 0 | 0 | 0.00K | 0.00K |
| KNOWLTON | CUSTER CO. | MT | 06/21/2015 | 14:55 | MST-7 | Hail | 2.75 in. | 0 | 0 | 0.00K | 0.00K |
| WESTMORE | FALLON CO. | MT | 06/21/2015 | 15:00 | MST-7 | Hail | 2.50 in. | 0 | 0 | 0.00K | 0.00K |
| WILLARD | FALLON CO. | MT | 06/21/2015 | 15:37 | MST-7 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
| WILLARD | FALLON CO. | MT | 06/21/2015 | 15:40 | MST-7 | Hail | 1.75 in. | 0 | 0 | 0.00K | 0.00K |
| FORSYTH | ROSEBUD CO. | MT | 06/21/2015 | 18:35 | MST-7 | Thunderstorm Wind | 52 kts. MG | 0 | 0 | 0.00K | 0.00K |
| FT KEOGH | CUSTER CO. | MT | 06/21/2015 | 19:02 | MST-7 | Thunderstorm Wind | 61 kts. EG | 0 | 0 | 0.00K | 0.00K |
| (MLS)WILEY FLD MILES | CUSTER CO. | MT | 06/21/2015 | 19:10 | MST-7 | Thunderstorm Wind | 52 kts. MG | 0 | 0 | 0.00K | 0.00K |
| (MLS)WILEY FLD MILES | CUSTER CO. | MT | 06/21/2015 | 19:10 | MST-7 | Thunderstorm Wind | 52 kts. MG | 0 | 0 | 0.00K | 0.00K |
| (MLS)WILEY FLD MILES | CUSTER CO. | MT | 06/21/2015 | 19:14 | MST-7 | Thunderstorm Wind | 52 kts. MG | 0 | 0 | 0.00K | 0.00K |
| MIZPAH | CUSTER CO. | MT | 06/21/2015 | 19:40 | MST-7 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| MIZPAH | CUSTER CO. | MT | 06/21/2015 | 19:40 | MST-7 | Thunderstorm Wind | 56 kts. MG | 0 | 0 | 0.00K | 0.00K |
| MIZPAH | CUSTER CO. | MT | 06/21/2015 | 19:40 | MST-7 | Thunderstorm Wind | 52 kts. MG | 0 | 0 | 0.00K | 0.00K |
| BAKER ARPT | FALLON CO. | MT | 06/21/2015 | 20:39 | MST-7 | Thunderstorm Wind | 61 kts. MG | 0 | 0 | 0.00K | 0.00K |
| Totals: | 0 | 0 | 0.00K | 0.00K |
