A magnitude Md 2.5 earthquake occured in region: 5 km NW Narni (TR), on
and geographic coordinates (lat, lon) 42.5650, 12.4920 at 32 km depth.
The earthquake was located by: Bollettino Sismico Italiano INGV.
Search earthquakes: Any within 30 km radius
The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Narni | TR | 5 | 19785 | 19785 |
Amelia | TR | 7 | 11897 | 31682 |
San Gemini | TR | 7 | 5018 | 36700 |
Montecastrilli | TR | 10 | 5022 | 41722 |
Avigliano Umbro | TR | 11 | 2558 | 44280 |
Terni | TR | 13 | 111501 | 155781 |
Lugnano in Teverina | TR | 13 | 1494 | 157275 |
Penna in Teverina | TR | 14 | 1099 | 158374 |
Orte | VT | 14 | 8923 | 167297 |
Acquasparta | TR | 15 | 4778 | 172075 |
Giove | TR | 15 | 1928 | 174003 |
Otricoli | TR | 16 | 1869 | 175872 |
Stroncone | TR | 16 | 4917 | 180789 |
Alviano | TR | 16 | 1463 | 182252 |
Guardea | TR | 17 | 1836 | 184088 |
Attigliano | TR | 17 | 2028 | 186116 |
Bassano in Teverina | VT | 19 | 1313 | 187429 |
Calvi dell'Umbria | TR | 19 | 1856 | 189285 |
Configni | RI | 20 | 633 | 189918 |
Montecchio | TR | 20 | 1676 | 191594 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5 | 1987-04-25 21:30:22 |
42.565 | 12.492 | 32 | 2013-07-15 08:40:51 |
Bollettino Sismico Italiano INGV | 45689 |
Field | Value |
---|---|
Time (UTC) | 1987-04-25 21:30:22 ± 0.214 |
Latitude | 42.5650 ± 0.0067 |
Longitude | 12.4920 ± 0.0400 |
Depth (km) | 32 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 45689 |
Field | Value |
---|---|
Preferred uncertainty description | horizontal uncertainty |
Semi-major axis of confidence ellipse (meter) | |
Semi-minor axis of confidence ellipse (meter) | |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 3359.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 219 |
Number of associated phases, regardless of their use for origin computation | 10 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.1 |
Epicentral distance of station closest to the epicenter (degree) | 0.00202 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01166 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 45689 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:44:58 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.SDI.Z. | 1987-04-25T21:30:59.50 | 10.0 | undecidable | manual | S | 130 | 1.2987 | -0.27 | 0.2 | |
--.ARV.Z. | 1987-04-25T21:30:53.00 | 10.0 | undecidable | manual | S | 19 | 0.9879 | 0.52 | 0 | |
--.CP9.Z. | 1987-04-25T21:30:47.50 | 10.0 | undecidable | manual | S | 154 | 0.777 | -0.02 | 0.8 | |
--.SDI.Z. | 1987-04-25T21:30:44.00 | 10.0 | undecidable | manual | P | 130 | 1.2987 | 0.05 | 1.4 | |
--.ASS.Z. | 1987-04-25T21:30:41.00 | 10.0 | undecidable | manual | S | 13 | 0.4995 | -0.09 | 1.1 | |
--.ARV.Z. | 1987-04-25T21:30:39.50 | 10.0 | undecidable | manual | P | 19 | 0.9879 | -0.23 | 0.9 | |
--.CP9.Z. | 1987-04-25T21:30:37.00 | 10.0 | undecidable | manual | P | 154 | 0.777 | 0.13 | 1.5 | |
--.MNS.Z. | 1987-04-25T21:30:34.50 | 10.0 | undecidable | manual | S | 142 | 0.222 | -0.09 | 1.1 | |
--.ASS.Z. | 1987-04-25T21:30:33.00 | 10.0 | undecidable | manual | P | 13 | 0.4995 | -0.16 | 1.4 | |
--.MNS.Z. | 1987-04-25T21:30:29.50 | 10.0 | undecidable | manual | P | 142 | 0.222 | 0.1 | 1.7 |