A magnitude ML 1.0 earthquake occured in region: 2 km W Norcia (PG), on
and geographic coordinates (lat, lon) 42.7910, 13.0710 at 11 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 |
---|---|---|---|---|
Norcia | PG | 2 | 4957 | 4957 |
Cascia | PG | 9 | 3217 | 8174 |
Preci | PG | 10 | 724 | 8898 |
Cerreto di Spoleto | PG | 13 | 1075 | 9973 |
Castelsantangelo sul Nera | MC | 13 | 281 | 10254 |
Poggiodomo | PG | 14 | 117 | 10371 |
Visso | MC | 16 | 1107 | 11478 |
Sellano | PG | 16 | 1079 | 12557 |
Vallo di Nera | PG | 17 | 364 | 12921 |
Accumoli | RI | 18 | 667 | 13588 |
Ussita | MC | 18 | 444 | 14032 |
Monteleone di Spoleto | PG | 18 | 599 | 14631 |
Arquata del Tronto | AP | 19 | 1178 | 15809 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-05-16 01:30:23 |
42.791 | 13.0712 | 11 | 2021-05-16 01:47:46 |
Sala Sismica INGV-Roma | 90145421 |
Field | Value |
---|---|
Time (UTC) | 2021-05-16 01:30:23 ± 0.04 |
Latitude | 42.7910 ± 0.0036 |
Longitude | 13.0712 ± 0.0049 |
Depth (km) | 11 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 90145421 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 481 |
Semi-minor axis of confidence ellipse (meter) | 162 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 310 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 480.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 97 |
Number of associated phases, regardless of their use for origin computation | 14 |
Number of defining phases | 14 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.11 |
Epicentral distance of station closest to the epicenter (degree) | 0.05306 |
Epicentral distance of station farthest from the epicenter (degree) | 0.42538 |
Number of stations at which the event was observed | 11 |
Number of stations from which data was used for origin computation | 11 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 18 |
Type of magnitude | ML |
Reference to an origin | 90145421 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-05-16 01:47:46 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2021-05-16T01:30:32.00 | 0.6 | undecidable | manual | P | 113 | 47.2194 | 50 | -0.17 | 62 |
IV.MF5.EHZ. | 2021-05-16T01:30:31.26 | 1.0 | positive | manual | P | 55 | 38.4282 | 50 | 0.46 | 30 |
IV.MC2.EHZ. | 2021-05-16T01:30:30.30 | 0.3 | undecidable | manual | S | 36 | 16.4724 | 123 | 0.13 | 99 |
IV.RM33.EHZ. | 2021-05-16T01:30:30.01 | 0.6 | negative | manual | P | 159 | 33.4443 | 50 | -0.02 | 65 |
IV.GAVE.EHZ. | 2021-05-16T01:30:30.73 | 0.3 | undecidable | manual | S | 233 | 18.0708 | 120 | 0.06 | 100 |
IV.CESI.HHZ. | 2021-05-16T01:30:29.02 | 0.3 | undecidable | manual | P | 330 | 27.3504 | 50 | -0.08 | 98 |
IV.SMA1.EHZ. | 2021-05-16T01:30:29.21 | 0.6 | undecidable | manual | P | 130 | 27.9498 | 50 | 0.02 | 66 |
IV.FDMO.HHZ. | 2021-05-16T01:30:29.04 | 0.6 | negative | manual | P | 3 | 27.2505 | 50 | -0.05 | 66 |
IV.LNSS.HHZ. | 2021-05-16T01:30:28.24 | 1.0 | positive | manual | P | 187 | 21.0678 | 117 | 0.13 | 33 |
IV.MMO1.EHZ. | 2021-05-16T01:30:28.50 | 1.0 | undecidable | manual | P | 60 | 24.0537 | 50 | -0.09 | 33 |
IV.MC2.EHZ. | 2021-05-16T01:30:27.46 | 0.6 | negative | manual | P | 36 | 16.4724 | 123 | 0.15 | 66 |
IV.GAVE.EHZ. | 2021-05-16T01:30:27.59 | 0.6 | negative | manual | P | 233 | 18.0708 | 120 | -0.01 | 67 |
IV.NRCA.HHZ. | 2021-05-16T01:30:27.39 | 0.3 | undecidable | manual | S | 37 | 5.8941 | 151 | -0.19 | 99 |
IV.NRCA.HHZ. | 2021-05-16T01:30:25.78 | 0.6 | undecidable | manual | P | 37 | 5.8941 | 151 | -0.04 | 68 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHE. | ML:1.7 | 0.0008349999999999999 | 0.14 | AML | other | m | 2021-05-16T01:30:27.62 |
IV.NRCA.HHN. | ML:1.3 | 0.00028849999999999997 | 0.14 | AML | other | m | 2021-05-16T01:30:28.72 |
IV.GAVE.EHE. | ML:1.1 | 0.000101643555 | 0.28 | AML | other | m | 2021-05-16T01:30:31.30 |
IV.GAVE.EHN. | ML:1.2 | 0.0001141867 | 0.18 | AML | other | m | 2021-05-16T01:30:31.80 |
IV.CESI.HHN. | ML:1.1 | 0.00006290000000000001 | 0.28 | AML | other | m | 2021-05-16T01:30:33.31 |
IV.CESI.HHE. | ML:0.6 | 0.000019341502699999998 | 0.12 | AML | other | m | 2021-05-16T01:30:33.59 |
IV.NRCA.HNE. | ML:1.7 | 0.0008081094 | 0.14 | AML | other | m | 2021-05-16T01:30:27.62 |
IV.NRCA.HNN. | ML:1.2 | 0.00025102199999999994 | 0.1296 | AML | other | m | 2021-05-16T01:30:28.79 |
IV.GAVE.HNE. | ML:1.2 | 0.00011977553 | 0.1896 | AML | other | m | 2021-05-16T01:30:31.71 |
IV.LNSS.HHE. | ML:0.9 | 0.000050457784999999996 | 0.16 | AML | other | m | 2021-05-16T01:30:32.44 |
IV.LNSS.HHN. | ML:0.7 | 0.00003455073 | 0.2 | AML | other | m | 2021-05-16T01:30:32.58 |
IV.FDMO.HHE. | ML:0.8 | 0.000032769275 | 0.1 | AML | other | m | 2021-05-16T01:30:33.49 |
IV.FDMO.HHN. | ML:0.8 | 0.00002926482 | 0.24 | AML | other | m | 2021-05-16T01:30:33.09 |
IV.SMA1.EHE. | ML:0.8 | 0.000035976095 | 0.5 | AML | other | m | 2021-05-16T01:30:37.97 |
IV.SMA1.EHN. | ML:0.8 | 0.000034417660000000005 | 0.18 | AML | other | m | 2021-05-16T01:30:34.80 |
IV.RM33.HNE. | ML:1.4 | 0.000097294525 | 0.56 | AML | other | m | 2021-05-16T01:30:34.70 |
IV.RM33.EHN. | ML:0.8 | 0.000023693029999999997 | 0.1 | AML | other | m | 2021-05-16T01:30:36.25 |
IV.TERO.HHN. | ML:0.7 | 0.000017300211 | 0.08 | AML | other | m | 2021-05-16T01:30:38.97 |