A magnitude ML 1.0 earthquake occured in region: Cascia (PG), on
and geographic coordinates (lat, lon) 42.7170, 13.0120 at 12 km depth.
The earthquake was located by: Sala Sismica INGV-Roma.
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 |
---|---|---|---|---|
Cascia | PG | 0 | 3217 | 3217 |
Poggiodomo | PG | 6 | 117 | 3334 |
Monteleone di Spoleto | PG | 9 | 599 | 3933 |
Norcia | PG | 11 | 4957 | 8890 |
Vallo di Nera | PG | 14 | 364 | 9254 |
Cerreto di Spoleto | PG | 14 | 1075 | 10329 |
Sant'Anatolia di Narco | PG | 14 | 564 | 10893 |
Scheggino | PG | 15 | 461 | 11354 |
Cittareale | RI | 16 | 482 | 11836 |
Leonessa | RI | 18 | 2435 | 14271 |
Preci | PG | 18 | 724 | 14995 |
Accumoli | RI | 20 | 667 | 15662 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-04-20 23:08:26 |
42.7173 | 13.0123 | 12 | 2021-04-20 23:16:33 |
Sala Sismica INGV-Roma | 89312521 |
Field | Value |
---|---|
Time (UTC) | 2021-04-20 23:08:26 ± 0.05 |
Latitude | 42.7173 ± 0.0027 |
Longitude | 13.0123 ± 0.0049 |
Depth (km) | 12 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 89312521 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 308 |
Semi-minor axis of confidence ellipse (meter) | 284 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 263 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 310.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 139 |
Number of associated phases, regardless of their use for origin computation | 9 |
Number of defining phases | 9 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.08 |
Epicentral distance of station closest to the epicenter (degree) | 0.09083 |
Epicentral distance of station farthest from the epicenter (degree) | 0.25541 |
Number of stations at which the event was observed | 6 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 9 |
Type of magnitude | ML |
Reference to an origin | 89312521 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-20 23:16:33 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.RM33.EHZ. | 2021-04-20T23:08:36.41 | 0.6 | undecidable | manual | S | 144 | 28.3494 | 92 | -0.04 | 66 |
IV.RM33.EHZ. | 2021-04-20T23:08:32.23 | 1.0 | undecidable | manual | P | 144 | 28.3494 | 92 | 0.02 | 33 |
IV.LNSS.HHZ. | 2021-04-20T23:08:32.27 | 0.6 | undecidable | manual | S | 170 | 12.876 | 111 | -0.08 | 67 |
IV.ARRO.EHZ. | 2021-04-20T23:08:31.69 | 0.6 | undecidable | manual | P | 233 | 25.2525 | 93 | -0.04 | 66 |
IV.GAVE.EHZ. | 2021-04-20T23:08:31.61 | 0.6 | undecidable | manual | S | 254 | 10.0788 | 124 | -0.06 | 68 |
IV.MC2.EHZ. | 2021-04-20T23:08:31.89 | 0.6 | negative | manual | P | 34 | 25.8519 | 93 | 0.08 | 66 |
IV.NRCA.HHZ. | 2021-04-20T23:08:30.07 | 0.6 | positive | manual | P | 33 | 15.3735 | 102 | -0.13 | 66 |
IV.GAVE.EHZ. | 2021-04-20T23:08:29.56 | 0.6 | positive | manual | P | 254 | 10.0788 | 124 | 0.12 | 67 |
IV.LNSS.HHZ. | 2021-04-20T23:08:29.94 | 0.3 | undecidable | manual | P | 170 | 12.876 | 111 | 0.1 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.GAVE.EHN. | ML:1.1 | 0.000134 | 0.26 | AML | other | m | 2021-04-20T23:08:31.85 |
IV.GAVE.EHE. | ML:1.0 | 0.00012285 | 1.24 | AML | other | m | 2021-04-20T23:08:31.99 |
IV.LNSS.HHE. | ML:1.2 | 0.00014000000000000001 | 0.5 | AML | other | m | 2021-04-20T23:08:32.45 |
IV.NRCA.HHN. | ML:1.0 | 0.00009779999999999999 | 0.14 | AML | other | m | 2021-04-20T23:08:32.61 |
IV.NRCA.HHE. | ML:1.2 | 0.000131 | 0.18 | AML | other | m | 2021-04-20T23:08:32.78 |
IV.LNSS.HHN. | ML:1.2 | 0.00014000000000000001 | 0.12 | AML | other | m | 2021-04-20T23:08:32.76 |
IV.RM33.EHE. | ML:0.5 | 0.00001665 | 0.22 | AML | other | m | 2021-04-20T23:08:36.93 |
IV.RM33.EHN. | ML:0.5 | 0.00001497 | 0.28 | AML | other | m | 2021-04-20T23:08:36.88 |
IV.FDMO.HHE. | ML:0.4 | 0.000012195000000000001 | 0.16 | AML | other | m | 2021-04-20T23:08:39.05 |