M 5.4 - 70 km SSE of Adak, Alaska
- 2025-03-20 05:13:07 (UTC)
- 51.295°N 176.227°W
- 35.0 km depth
ShakeMap
- The data below are the most preferred data available
- The data below have NOT been reviewed by a scientist.
Processing
| Type | Module | Reference |
|---|---|---|
| GMPE | gmpe_us6000pzwx_custom | |
| IPE | VirtualIPE | |
| GMICE | WGRW12 | |
| CCF | LothBaker2013 | |
| Basin | None | |
| Directivity | None |
- Max magnitude to compute bias
- 7.7
- Maximum distance to include station in bias
- 120.0
- Use log amp to compute bias
- -
- Max allowed bias
- -
- Use log amp to compute bias
- -
- Min # of stations necessary to compute bias
- -
- Norm of the bias
- -
- Median distance used
- False
- Outlier level (# of std dev)
- 3.0
- Max magnitude to flag outliers
- 7.0
- Code
- 4.4.3.dev0+g59840b2e.d20250319
- Github commit
- 4.4.3.dev0+g59840b2e.d20250319
- Map version
- 5
- Date
- 2025-03-21 05:27:44 (UTC)
| Map Version | Network | Processing Time | Comment |
|---|---|---|---|
| 1 | us | 2025-03-20 05:28:05 (UTC) | Origin updated |
| 2 | us | 2025-03-20 05:37:01 (UTC) | Data association |
| 3 | us | 2025-03-20 07:27:27 (UTC) | Scheduled repeat |
| 4 | us | 2025-03-20 07:50:08 (UTC) | Data association |
| 5 | us | 2025-03-21 05:27:30 (UTC) | Scheduled repeat |
- Reference rock Vs30
- 760.0
- Site correction applied
- GMPE native
Output
| Type | Max Value in Grid | Max Value on Land | Bias |
|---|---|---|---|
| SA(1.0 s) | 0.028 g | 0.02 g | 0.088 |
| PGV | 2.066 cms | 1.531 cms | -0.022 |
| SA(3.0 s) | 0.003 g | 0.002 g | 0 |
| Intensity | 4.188 intensity | 3.99 intensity | -0.012 |
| SA(0.3 s) | 0.077 g | 0.054 g | -0.007 |
| PGA | 0.043 g | 0.023 g | -0.063 |
| SA(0.6) | 0.05 g | 0.036 g | 0.041 |
| Type | Latitude | Longitude |
|---|---|---|
| Number of points | 435 | 689 |
| Grid spacing | 0.0083333 degrees | 0.0083333 degrees |
| Span | 3.617 degrees | 5.733 degrees |
| Min | 49.45 degrees | -178.967 degrees |
| Max | 53.067 degrees | -173.233 degrees |
- Mean of map uncertainty
- -
- Empirical ShakeMap grade
- --
- Flagged Seismic Stations
- 0
- Flagged DYFI stations
- 0
Input
- Description
- USGS NEIC ShakeMap
- ID
- us6000pzwx
- Magnitude
- 5.4
- Depth
- 35.0 km
- GPS location
- 51.295°N 176.227°W
- Origin time
- 2025-03-20 05:13:07 (UTC)
- Mechanism
- -
- Mechanism source
- RS
- Location
- 70 km SSE of Adak, Alaska
- Fault files
- -
- Fault reference
- Origin
- Number of seismic stations
- 10
- Number of DYFI stations
- 0
Ground Motion Models
| Name | Weight | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.02 | ||||||||||||
| 0.71 | ||||||||||||
| 0.27 |
| Name | Weight | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.02 | ||||||||||||
| 0.71 | ||||||||||||
| 0.27 |
| Name | Weight | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.02 | ||||||||||||
| 0.71 | ||||||||||||
| 0.27 |
| Name | Weight | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.02 | ||||||||||||
| 0.71 | ||||||||||||
| 0.27 |
| Name | Weight | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.02 | ||||||||||||
| 0.71 | ||||||||||||
| 0.27 |