A magnitude ML 1.4 earthquake occured in region: 4 km NW Norcia (PG), on
and geographic coordinates (lat, lon) 42.8280, 13.0670 at 10 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 | 4 | 4957 | 4957 |
Preci | PG | 6 | 724 | 5681 |
Castelsantangelo sul Nera | MC | 10 | 281 | 5962 |
Visso | MC | 12 | 1107 | 7069 |
Cerreto di Spoleto | PG | 12 | 1075 | 8144 |
Cascia | PG | 13 | 3217 | 11361 |
Sellano | PG | 13 | 1079 | 12440 |
Ussita | MC | 14 | 444 | 12884 |
Poggiodomo | PG | 17 | 117 | 13001 |
Vallo di Nera | PG | 18 | 364 | 13365 |
Monte Cavallo | MC | 19 | 145 | 13510 |
Arquata del Tronto | AP | 20 | 1178 | 14688 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.4 | 2021-08-22 18:41:21 |
42.828 | 13.0673 | 10 | 2021-08-22 18:46:19 |
Sala Sismica INGV-Roma | 94512011 |
Field | Value |
---|---|
Time (UTC) | 2021-08-22 18:41:21 ± 0.06 |
Latitude | 42.8280 ± 0.0027 |
Longitude | 13.0673 ± 0.0049 |
Depth (km) | 10 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94512011 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 443 |
Semi-minor axis of confidence ellipse (meter) | 225 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 293 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 440.0 |
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 | 27 |
Number of defining phases | 26 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.24 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.47394 |
Number of stations at which the event was observed | 15 |
Number of stations from which data was used for origin computation | 14 |
Field | Value |
---|---|
Value | 1.4 |
Uncertainty | 0.4 |
Num. used stations | 24 |
Type of magnitude | ML |
Reference to an origin | 94512011 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-22 18:46:19 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TOLF.HHZ. | 2021-08-22T18:41:53.99 | 3.0 | undecidable | manual | S | -4.37 | 0 | |||
IV.ATCC.EHZ. | 2021-08-22T18:41:38.52 | 0.1 | undecidable | manual | S | 319 | 52.6029 | 50 | 0.63 | 79 |
IV.GUMA.HHZ. | 2021-08-22T18:41:33.26 | 0.1 | undecidable | manual | S | 40 | 33.9438 | 50 | 0.36 | 88 |
IV.RM33.EHZ. | 2021-08-22T18:41:33.83 | 0.1 | undecidable | manual | S | 161 | 37.3293 | 50 | 0.01 | 95 |
IV.ARRO.EHZ. | 2021-08-22T18:41:33.37 | 0.1 | undecidable | manual | S | 222 | 36.9297 | 50 | -0.34 | 88 |
IV.SMA1.EHZ. | 2021-08-22T18:41:32.00 | 0.1 | undecidable | manual | S | 135 | 30.9468 | 50 | -0.1 | 94 |
IV.CSP1.EHZ. | 2021-08-22T18:41:31.76 | 0.1 | undecidable | manual | S | 21 | 31.3464 | 50 | -0.45 | 87 |
IV.MTRA.EHZ. | 2021-08-22T18:41:31.18 | 0.1 | undecidable | manual | S | 106 | 27.9498 | 50 | -0.12 | 94 |
IV.LNSS.HHZ. | 2021-08-22T18:41:30.43 | 0.1 | undecidable | manual | S | 185 | 25.0527 | 50 | -0.11 | 95 |
IV.ATCC.EHZ. | 2021-08-22T18:41:30.70 | 0.6 | undecidable | manual | P | 319 | 52.6029 | 50 | -0.14 | 45 |
IV.TERO.HHZ. | 2021-08-22T18:41:30.65 | 0.6 | undecidable | manual | P | 117 | 49.3173 | 50 | 0.33 | 43 |
IV.ASSB.HHZ. | 2021-08-22T18:41:29.18 | 1.0 | positive | manual | P | 306 | 40.8258 | 50 | 0.16 | 23 |
IV.GAVE.EHZ. | 2021-08-22T18:41:29.22 | 0.1 | undecidable | manual | S | 223 | 20.6682 | 116 | 0.03 | 97 |
IV.FDMO.HHZ. | 2021-08-22T18:41:29.43 | 0.1 | undecidable | manual | S | 4 | 23.1546 | 114 | -0.56 | 85 |
IV.ARRO.EHZ. | 2021-08-22T18:41:28.47 | 0.6 | negative | manual | P | 222 | 36.9297 | 50 | 0.05 | 47 |
IV.GUMA.HHZ. | 2021-08-22T18:41:28.12 | 0.3 | positive | manual | P | 40 | 33.9438 | 50 | 0.16 | 69 |
IV.RM33.EHZ. | 2021-08-22T18:41:28.37 | 1.0 | positive | manual | P | 161 | 37.3293 | 50 | -0.12 | 23 |
IV.MTRA.EHZ. | 2021-08-22T18:41:27.37 | 0.6 | undecidable | manual | P | 106 | 27.9498 | 50 | 0.34 | 45 |
IV.SMA1.EHZ. | 2021-08-22T18:41:27.60 | 1.0 | negative | manual | P | 135 | 30.9468 | 50 | 0.11 | 23 |
IV.MC2.EHZ. | 2021-08-22T18:41:27.14 | 0.1 | undecidable | manual | S | 47 | 13.5753 | 127 | 0.06 | 98 |
IV.CSP1.EHZ. | 2021-08-22T18:41:27.42 | 0.1 | undecidable | manual | P | 21 | 31.3464 | 50 | -0.13 | 93 |
IV.FDMO.HHZ. | 2021-08-22T18:41:26.10 | 0.3 | negative | manual | P | 4 | 23.1546 | 114 | -0.17 | 70 |
IV.LNSS.HHZ. | 2021-08-22T18:41:26.52 | 0.3 | negative | manual | P | 185 | 25.0527 | 50 | -0.06 | 72 |
IV.GAVE.EHZ. | 2021-08-22T18:41:25.91 | 0.1 | undecidable | manual | P | 223 | 20.6682 | 116 | 0.1 | 96 |
IV.NRCA.HNZ. | 2021-08-22T18:41:24.97 | 0.1 | undecidable | manual | S | 81 | 3.8961 | 159 | -0.02 | 100 |
IV.MC2.EHZ. | 2021-08-22T18:41:24.80 | 0.1 | negative | manual | P | 47 | 13.5753 | 127 | 0.2 | 95 |
IV.NRCA.HNZ. | 2021-08-22T18:41:23.58 | 0.3 | undecidable | manual | P | 81 | 3.8961 | 159 | 0.19 | 72 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HNN. | ML:2.5 | 0.0054 | 0.08 | AML | other | m | 2021-08-22T18:41:25.00 |
IV.NRCA.HHN. | ML:2.5 | 0.005869999999999999 | 0.08 | AML | other | m | 2021-08-22T18:41:25.04 |
IV.NRCA.HNE. | ML:2.2 | 0.0027949999999999997 | 0.06 | AML | other | m | 2021-08-22T18:41:25.15 |
IV.NRCA.HHE. | ML:2.3 | 0.003445 | 0.06 | AML | other | m | 2021-08-22T18:41:25.12 |
IV.GAVE.EHN. | ML:1.6 | 0.000255 | 0.88 | AML | other | m | 2021-08-22T18:41:29.16 |
IV.FDMO.HHE. | ML:1.3 | 0.00013350000000000002 | 1.06 | AML | other | m | 2021-08-22T18:41:30.26 |
IV.FDMO.HHN. | ML:1.4 | 0.00016700000000000002 | 0.28 | AML | other | m | 2021-08-22T18:41:30.28 |
IV.GAVE.EHE. | ML:1.6 | 0.00027800000000000004 | 1.1 | AML | other | m | 2021-08-22T18:41:30.93 |
IV.LNSS.HHN. | ML:1.5 | 0.0001735 | 0.18 | AML | other | m | 2021-08-22T18:41:30.65 |
IV.LNSS.HHE. | ML:1.5 | 0.000201 | 0.64 | AML | other | m | 2021-08-22T18:41:30.96 |
IV.MTRA.EHE. | ML:1.0 | 0.00005185 | 0.16 | AML | other | m | 2021-08-22T18:41:31.76 |
IV.MTRA.EHN. | ML:1.1 | 0.0000654 | 1.54 | AML | other | m | 2021-08-22T18:41:31.83 |
IV.CSP1.EHE. | ML:1.6 | 0.000163 | 0.42 | AML | other | m | 2021-08-22T18:41:32.56 |
IV.CSP1.EHN. | ML:1.7 | 0.0002315 | 0.42 | AML | other | m | 2021-08-22T18:41:32.66 |
IV.GUMA.HHN. | ML:1.5 | 0.00013350000000000002 | 0.54 | AML | other | m | 2021-08-22T18:41:33.75 |
IV.RM33.EHN. | ML:1.1 | 0.000049050000000000006 | 0.68 | AML | other | m | 2021-08-22T18:41:34.50 |
IV.SMA1.EHN. | ML:1.0 | 0.0000451 | 0.24 | AML | other | m | 2021-08-22T18:41:34.86 |
IV.SMA1.EHE. | ML:1.0 | 0.00005215 | 0.44 | AML | other | m | 2021-08-22T18:41:35.37 |
IV.RM33.EHE. | ML:0.9 | 0.00003235000000000001 | 0.56 | AML | other | m | 2021-08-22T18:41:35.37 |
IV.ASSB.HHE. | ML:0.9 | 0.000023449999999999997 | 0.54 | AML | other | m | 2021-08-22T18:41:35.72 |
IV.GUMA.HHE. | ML:1.5 | 0.00013550000000000001 | 0.34 | AML | other | m | 2021-08-22T18:41:36.17 |
IV.ARRO.EHN. | ML:1.0 | 0.000033299999999999996 | 0.18 | AML | other | m | 2021-08-22T18:41:36.48 |
IV.ARRO.EHE. | ML:0.9 | 0.0000281 | 0.48 | AML | other | m | 2021-08-22T18:41:36.52 |
IV.ASSB.HHN. | ML:0.9 | 0.00002415 | 0.72 | AML | other | m | 2021-08-22T18:41:37.11 |