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 | 0.88 in. |
| State | NORTH DAKOTA |
| County/Area | ROLETTE |
| WFO | BIS |
| Begin Date | 08/01/2010 18:15:00 CST-6 |
| Begin Range | 1 |
| Begin Azimuth | SSW |
| Begin Location | DUNSEITH |
| Begin Lat/Lon | 48.81/-100.06 |
| End Date | 08/01/2010 18:22:00 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 Sunday, August 1st, Severe Thunderstorm Watch number 559 was issued for much of western and north central North Dakota. Later, during early Sunday evening, the watch was expanded to include south central North Dakota. A remnant outflow boundary across northeast Montana and northwest North Dakota was the focus for isolated supercells as they tracked east-southeast from northwest North Dakota in the afternoon, into south central North Dakota in the evening. Additional thunderstorm development took place across north central North Dakota, where mid level short wave impulses provided the necessary lift along a surface trough. Several severe thunderstorm and tornado warnings were issued. Multiple reports of large hail, several reports of severe thunderstorm winds, and two confirmed tornadoes 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 | 337.00K | 250.00K | |||||||
| TRENTON | WILLIAMS CO. | ND | 08/01/2010 | 15:00 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| WATFORD CITY | MCKENZIE CO. | ND | 08/01/2010 | 15:02 | MST-7 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
| TRENTON | WILLIAMS CO. | ND | 08/01/2010 | 15:02 | CST-6 | Hail | 1.00 in. | 0 | 0 | 15.00K | 0.00K |
| KEENE | MCKENZIE CO. | ND | 08/01/2010 | 15:15 | MST-7 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| WILLISTON | WILLIAMS CO. | ND | 08/01/2010 | 15:20 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| WILLISTON | WILLIAMS CO. | ND | 08/01/2010 | 15:30 | CST-6 | Hail | 1.75 in. | 0 | 0 | 35.00K | 0.00K |
| WILLISTON | WILLIAMS CO. | ND | 08/01/2010 | 15:30 | CST-6 | Hail | 1.50 in. | 0 | 0 | 35.00K | 0.00K |
| WILLISTON | WILLIAMS CO. | ND | 08/01/2010 | 15:30 | CST-6 | Hail | 1.75 in. | 0 | 0 | 12.00K | 0.00K |
| WILLISTON | WILLIAMS CO. | ND | 08/01/2010 | 15:30 | CST-6 | Hail | 1.75 in. | 0 | 0 | 40.00K | 0.00K |
| MANDAREE | MCKENZIE CO. | ND | 08/01/2010 | 15:43 | MST-7 | Funnel Cloud | 0 | 0 | 0.00K | 0.00K | |
| DUNSEITH | ROLETTE CO. | ND | 08/01/2010 | 18:15 | CST-6 | Hail | 0.88 in. | 0 | 0 | 0.00K | 0.00K |
| HANNOVER | OLIVER CO. | ND | 08/01/2010 | 19:28 | CST-6 | Hail | 1.75 in. | 0 | 0 | 0.00K | 0.00K |
| NEW SALEM | MORTON CO. | ND | 08/01/2010 | 19:45 | CST-6 | Hail | 1.00 in. | 0 | 0 | 0.00K | 0.00K |
| NEW SALEM | MORTON CO. | ND | 08/01/2010 | 19:46 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
| NEW SALEM | MORTON CO. | ND | 08/01/2010 | 19:48 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
| NEW SALEM | MORTON CO. | ND | 08/01/2010 | 20:00 | CST-6 | Hail | 1.50 in. | 0 | 0 | 0.00K | 0.00K |
| NEW SALEM | MORTON CO. | ND | 08/01/2010 | 20:00 | CST-6 | Thunderstorm Wind | 70 kts. EG | 0 | 0 | 150.00K | 250.00K |
| JUDSON | MORTON CO. | ND | 08/01/2010 | 20:10 | CST-6 | Funnel Cloud | 0 | 0 | 0.00K | 0.00K | |
| SWEET BRIAR | MORTON CO. | ND | 08/01/2010 | 20:13 | CST-6 | Thunderstorm Wind | 52 kts. EG | 0 | 0 | 0.00K | 0.00K |
| BEULAH | MERCER CO. | ND | 08/01/2010 | 20:16 | CST-6 | Tornado | EF0 | 0 | 0 | 50.00K | 0.00K |
| ROLETTE | ROLETTE CO. | ND | 08/01/2010 | 20:45 | CST-6 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
| Totals: | 0 | 0 | 337.00K | 250.00K |
