PAGER - M 3.5 - Utah
Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.
Earthquake Shaking Alert Level: GREEN
Download Alert PDFWhat's this?Friday, July 13th, 2012 at 19:53:17 UTC (13:53:17 local)Location: 41.9° N, 111.9° WDepth: 0kmEvent Id: UU00010557Alert Version: 2Created: 1 week, 0 days after earthquake.
Alert Information
| ESTIMATED FATALITIES (LEVEL) | Probability (%) |
|---|---|
| 0 (GREEN) | 99 |
| 1 to 9 (YELLOW) | 1 |
| 10 to 99 (YELLOW) | 0 |
| 100 to 999 (ORANGE) | 0 |
| 1 to 10 thousand (RED) | 0 |
| 10 to 100 thousand (RED) | 0 |
| 100 thousand + (RED) | 0 |
| ESTIMATED VALUE IN USD (LEVEL) | Probability (%) |
|---|---|
| 0 to 1 million (GREEN) | 99 |
| 1 to 10 million (YELLOW) | 1 |
| 10 to 100 million (YELLOW) | 0 |
| 100 million to 1 billion (ORANGE) | 0 |
| 1 to 10 billion (RED) | 0 |
| 10 to 100 billion (RED) | 0 |
| 100 billion + (RED) | 0 |
Detailed Information
| Estimated Modified Mercalli Intensity | I | II-III | IV | V | VI | VII | VIII | IX | X | |
|---|---|---|---|---|---|---|---|---|---|---|
| Est. Population Exposure | 882k | 135k | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Perceived Shaking | Not Felt | Weak | Light | Moderate | Strong | Very Strong | Severe | Violent | Extreme | |
| Potential Structure Damage | Resistant | none | none | none | V. Light | Light | Moderate | Moderate/Heavy | Heavy | V. Heavy |
| Vulnerable | none | none | none | Light | Moderate | Moderate/Heavy | Heavy | V. Heavy | V. Heavy | |
Population per ~1 sq. km. from LandScan
Structure Information Summary
Overall, the population in this region resides in structures that are resistant to earthquake shaking, though some vulnerable structures exist.
Historical Earthquakes (with MMI)
| Date (UTC) | Dist (km) | Mag | Max MMI (#) | Shaking Deaths |
|---|---|---|---|---|
| 1975-06-30 | 324 | 6.1 | VII (25) | 0 |
| 1994-02-03 | 126 | 5.8 | VIII (967) | 0 |
| 1983-10-28 | 287 | 6.9 | VIII (146) | 2 |
Recent earthquakes in this area have caused secondary hazards such as landslides that might have contributed to losses.
| MMI | City | Population |
|---|---|---|
| III | Lewiston | 2k |
| III | Benson | 2k |
| III | Richmond | 2k |
| III | Smithfield | 8k |
| III | Hyde Park | 3k |
| II | North Logan | 7k |
| II | Logan | 45k |
| I | Salt Lake City | 178k |
| I | Ogden | 78k |
| I | Layton | 62k |
| I | Bountiful | 42k |
(k = x1,000)
| # | Date/Time | Mag | Lat, Lon, Depth | Country | Max MMI (Exposed) | Deaths | Secondary Effects | |
|---|---|---|---|---|---|---|---|---|
| Shaking | Total | |||||||
| 1 | 1975-03-28 02:31 UTC | 6.2 | 42.01° N, 112.48° W 5km | US | VIII (9) | 0 | 0 | |
| 2 | 1975-06-30 18:54 UTC | 6.1 | 44.67° N, 110.74° W 15km | US | VII (25) | 0 | 0 | |
| 3 | 1983-10-28 14:06 UTC | 6.9 | 44.08° N, 113.8° W 16km | US | VIII (146) | 2 | 2 | landslide |
| 4 | 1994-02-03 09:05 UTC | 5.8 | 42.78° N, 110.97° W 4km | US | VIII (967) | 0 | 0 | |
| 5 | 2005-07-26 04:08 UTC | 5.6 | 45.4° N, 112.57° W 9km | US | VIII (1) | 0 | 0 | |
| MMI | City | Population |
|---|---|---|
| III | Lewiston | 2k |
| III | Benson | 2k |
| III | Richmond | 2k |
| III | Smithfield | 8k |
| III | Hyde Park | 3k |
| II | North Logan | 7k |
| II | Logan | 45k |
| II | River Heights | 1k |
| II | Providence | 6k |
| II | Preston | 5k |
| II | Millville | 2k |
| II | Mendon | 1k |
| II | Garland | 2k |
| II | Nibley | 2k |
| II | Tremonton | 6k |
| I | Hyrum | 6k |
| I | Honeyville | 1k |
| I | Wellsville | 3k |
| I | Malad City | 2k |
| I | Montpelier | 3k |
| I | Bountiful | 42k |
| I | Brigham City | 17k |
| I | Centerville | 15k |
| I | Clearfield | 28k |
| I | Clinton | 17k |
| I | Coalville | 1k |
| I | Enterprise | 1k |
| I | Farmington | 14k |
| I | Farr West | 4k |
| I | Fruit Heights | 5k |
| I | Harrisville | 5k |
| I | Hooper | 4k |
| I | Kaysville | 22k |
| I | Layton | 62k |
| I | Marriott-Slaterville | 1k |
| I | Morgan | 3k |
| I | North Ogden | 17k |
| I | North Salt Lake | 10k |
| I | Ogden | 78k |
| I | Perry | 3k |
| I | Plain City | 4k |
| I | Pleasant View | 6k |
| I | Riverdale | 8k |
| I | Roy | 36k |
| I | Salt Lake City | 178k |
| I | South Ogden | 16k |
| I | South Weber | 6k |
| I | Summit Park | 7k |
| I | Sunset | 5k |
| I | Syracuse | 18k |
| I | Uintah | 1k |
| I | Washington Terrace | 8k |
| I | West Bountiful | 5k |
| I | West Haven | 6k |
| I | West Point | 7k |
| I | Willard | 2k |
| I | Woods Cross | 8k |
| I | Evanston | 11k |
(k = x1,000)
PAGER content is automatically generated, and only considers losses due to structural damage. Limitations of input data, shaking estimates, and loss models may add uncertainty. PAGER results are generally available within 30 minutes of the earthquake’s occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following an earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.
