A magnitude ML 1.3 earthquake occured in region: 4 km E Norcia (PG), on
and geographic coordinates (lat, lon) 42.8070, 13.1350 at 10 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 |
---|---|---|---|---|
Norcia | PG | 4 | 4957 | 4957 |
Castelsantangelo sul Nera | MC | 10 | 281 | 5238 |
Preci | PG | 11 | 724 | 5962 |
Arquata del Tronto | AP | 14 | 1178 | 7140 |
Cascia | PG | 14 | 3217 | 10357 |
Visso | MC | 14 | 1107 | 11464 |
Ussita | MC | 15 | 444 | 11908 |
Accumoli | RI | 16 | 667 | 12575 |
Montegallo | AP | 17 | 523 | 13098 |
Cerreto di Spoleto | PG | 18 | 1075 | 14173 |
Montemonaco | AP | 19 | 604 | 14777 |
Sellano | PG | 19 | 1079 | 15856 |
Poggiodomo | PG | 19 | 117 | 15973 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.3 | 2021-04-16 23:27:42 |
42.8068 | 13.1347 | 10 | 2021-07-12 16:55:08 |
Bollettino Sismico Italiano INGV | 89556901 |
Reviewed Rev100 |
ML 1.3 | 2021-04-16 23:27:42 |
42.806 | 13.1338 | 10 | 2021-04-16 23:33:49 |
Sala Sismica INGV-Roma | 89161821 |
Field | Value |
---|---|
Time (UTC) | 2021-04-16 23:27:42 ± 0.04 |
Latitude | 42.8068 ± 0.0018 |
Longitude | 13.1347 ± 0.0037 |
Depth (km) | 10 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 89556901 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 293 |
Semi-minor axis of confidence ellipse (meter) | 120 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 262 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 290.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 83 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 17 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.14 |
Epicentral distance of station closest to the epicenter (degree) | 0.03058 |
Epicentral distance of station farthest from the epicenter (degree) | 0.39031 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 1.3 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 89161821 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-16 23:33:49 |
Field | Value |
---|---|
Value | 1.3 |
Uncertainty | 0.1 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 89556901 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-04-28 13:34:48 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2021-04-16T23:27:56.56 | 0.1 | undecidable | manual | S | 118 | 43.3233 | 50 | -0.2 | 92 |
IV.CSP1.EHE. | 2021-04-16T23:27:53.81 | 0.1 | undecidable | manual | S | 10 | 32.1456 | 50 | 0.06 | 96 |
IV.FDMO.HHZ. | 2021-04-16T23:27:52.05 | 0.1 | undecidable | manual | S | 351 | 25.752 | 111 | 0.01 | 98 |
IV.CESI.HHZ. | 2021-04-16T23:27:52.72 | 0.1 | undecidable | manual | S | 320 | 28.8489 | 50 | -0.16 | 95 |
IV.T1299.HNN. | 2021-04-16T23:27:51.04 | 0.3 | undecidable | manual | S | 148 | 22.6551 | 114 | 0.01 | 74 |
IV.LNSS.HHZ. | 2021-04-16T23:27:51.38 | 0.1 | undecidable | manual | S | 199 | 23.9538 | 112 | -0.05 | 98 |
IV.TERO.HHZ. | 2021-04-16T23:27:50.67 | 0.6 | negative | manual | P | 118 | 43.3233 | 50 | -0.04 | 47 |
IV.CSP1.EHE. | 2021-04-16T23:27:49.13 | 0.1 | undecidable | manual | P | 10 | 32.1456 | 50 | 0.15 | 94 |
IV.MMO1.EHZ. | 2021-04-16T23:27:49.79 | 0.1 | undecidable | manual | S | 57 | 18.6702 | 118 | -0.01 | 99 |
IV.CESI.HHZ. | 2021-04-16T23:27:48.83 | 1.0 | undecidable | manual | P | 320 | 28.8489 | 50 | 0.35 | 23 |
IV.T1299.HNN. | 2021-04-16T23:27:47.69 | 0.3 | undecidable | manual | P | 148 | 22.6551 | 114 | 0.28 | 70 |
IV.LNSS.HHZ. | 2021-04-16T23:27:47.59 | 0.1 | undecidable | manual | P | 199 | 23.9538 | 112 | -0.05 | 98 |
IV.FDMO.HHZ. | 2021-04-16T23:27:47.92 | 0.6 | positive | manual | P | 351 | 25.752 | 111 | -0.06 | 48 |
IV.GAVE.EHN. | 2021-04-16T23:27:47.72 | 0.3 | undecidable | manual | P | 237 | 23.3544 | 113 | 0.18 | 71 |
IV.MMO1.EHZ. | 2021-04-16T23:27:46.73 | 0.1 | undecidable | manual | P | 57 | 18.6702 | 118 | 0.03 | 99 |
IV.NRCA.HHZ. | 2021-04-16T23:27:45.86 | 0.1 | undecidable | manual | S | 331 | 3.3966 | 161 | -0.22 | 98 |
IV.NRCA.HHZ. | 2021-04-16T23:27:44.66 | 0.1 | undecidable | manual | P | 331 | 3.3966 | 161 | 0.1 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.4 | 0.000447 | 0.12 | AML | other | m | 2021-04-16T23:27:45.92 |
IV.NRCA.HHE. | ML:1.3 | 0.00034550000000000005 | 1.84 | AML | other | m | 2021-04-16T23:27:46.06 |
IV.LNSS.HHE. | ML:1.1 | 0.00007795000000000001 | 0.14 | AML | other | m | 2021-04-16T23:27:51.54 |
IV.LNSS.HHN. | ML:1.3 | 0.000117 | 0.2 | AML | other | m | 2021-04-16T23:27:51.58 |