Storm Events Database
- Data Access
- Search
- FTP Access
- Database Download
- Storm Data Publication
- Documentation
- Storm Data FAQ
- Storm Data Preparation
- Tornado EF Scale
- External Resources
- NOAA's SPC Reports
- NOAA's SPC WCM Page
- SHELDUS
Storm Events Database
Event Details
| Event | Hail |
| Magnitude | 2.00 in. |
| State | WYOMING |
| County/Area | JOHNSON |
| WFO | RIW |
| Begin Date | 08/07/2009 21:20:00 MST-7 |
| Begin Range | 5 |
| Begin Azimuth | NW |
| Begin Location | KAYCEE GOSNEY ARPT |
| Begin Lat/Lon | 43.77/-106.73 |
| End Date | 08/07/2009 21:25:00 MST-7 |
| Deaths Direct/Indirect | 0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect | 0/0 |
| Property Damage | 1.00K |
| Crop Damage | 0.00K |
| Episode Narrative | A large upper level low spinning slowly east from southern Idaho helped to trigger severe thunderstorms across the north half of Wyoming. Surface dew points in the 50s (degrees F), a favorable jet stream location, and a front sliding south from Montana all combined to set the stage for thunderstorms. The storms formed late in the afternoon and persisted through the evening and into the early morning hours. |
| Event Narrative | Hail of 1.75 to 2.00 inches in diameter fell at a ranch northwest of Kaycee on State Highway 191. The hail broke a vehicle window. |
All events for this episode:
| Location | County/Zone | St. | Date | Time | T.Z. | Type | Mag | Dth | Inj | PrD | CrD |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Totals: | 0 | 1 | 78.00K | 25.00K | |||||||
| BURLINGTON | BIG HORN CO. | WY | 08/07/2009 | 15:44 | MST-7 | Hail | 1.25 in. | 0 | 0 | 0.00K | 25.00K |
| OTTO | BIG HORN CO. | WY | 08/07/2009 | 15:51 | MST-7 | Hail | 1.25 in. | 0 | 0 | 0.00K | 0.00K |
| GREYBULL | BIG HORN CO. | WY | 08/07/2009 | 16:10 | MST-7 | Hail | 2.00 in. | 0 | 1 | 75.00K | 0.00K |
| GREYBULL | BIG HORN CO. | WY | 08/07/2009 | 16:15 | MST-7 | Hail | 2.50 in. | 0 | 0 | 0.00K | 0.00K |
| GREYBULL | BIG HORN CO. | WY | 08/07/2009 | 16:17 | MST-7 | Hail | 2.00 in. | 0 | 0 | 2.00K | 0.00K |
| GREYBULL ARPT | BIG HORN CO. | WY | 08/07/2009 | 16:24 | MST-7 | Thunderstorm Wind | 51 kts. MG | 0 | 0 | 0.00K | 0.00K |
| KAYCEE GOSNEY ARPT | JOHNSON CO. | WY | 08/07/2009 | 21:20 | MST-7 | Hail | 2.00 in. | 0 | 0 | 1.00K | 0.00K |
| MAYOWORTH | JOHNSON CO. | WY | 08/07/2009 | 21:25 | MST-7 | Hail | 0.88 in. | 0 | 0 | 0.00K | 0.00K |
| BUFFALO | JOHNSON CO. | WY | 08/07/2009 | 22:20 | MST-7 | Hail | 1.75 in. | 0 | 0 | 0.00K | 0.00K |
| CASPER HARFORD ARPT | NATRONA CO. | WY | 08/08/2009 | 01:10 | MST-7 | Hail | 0.88 in. | 0 | 0 | 0.00K | 0.00K |
| Totals: | 0 | 1 | 78.00K | 25.00K |
