A magnitude ML 0.9 earthquake occured in region: 5 km NE Norcia (PG), on
and geographic coordinates (lat, lon) 42.8270, 13.1260 at 4 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 | 5 | 4957 | 4957 |
Castelsantangelo sul Nera | MC | 8 | 281 | 5238 |
Preci | PG | 9 | 724 | 5962 |
Visso | MC | 12 | 1107 | 7069 |
Ussita | MC | 13 | 444 | 7513 |
Cascia | PG | 15 | 3217 | 10730 |
Arquata del Tronto | AP | 15 | 1178 | 11908 |
Montegallo | AP | 17 | 523 | 12431 |
Cerreto di Spoleto | PG | 17 | 1075 | 13506 |
Sellano | PG | 18 | 1079 | 14585 |
Accumoli | RI | 18 | 667 | 15252 |
Montemonaco | AP | 18 | 604 | 15856 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 0.9 | 2021-04-04 19:01:13 |
42.8272 | 13.1265 | 5 | 2021-07-12 16:55:13 |
Bollettino Sismico Italiano INGV | 90643281 |
Reviewed Rev100 |
ML 0.9 | 2021-04-04 19:01:13 |
42.8245 | 13.1267 | 4 | 2021-04-04 19:14:42 |
Sala Sismica INGV-Roma | 88773081 |
Field | Value |
---|---|
Time (UTC) | 2021-04-04 19:01:13 ± 0.11 |
Latitude | 42.8272 ± 0.0036 |
Longitude | 13.1265 ± 0.0061 |
Depth (km) | 5 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 90643281 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 454 |
Semi-minor axis of confidence ellipse (meter) | 161 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 80 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 450.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 109 |
Number of associated phases, regardless of their use for origin computation | 30 |
Number of defining phases | 21 |
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) | 0.29228 |
Number of stations at which the event was observed | 19 |
Number of stations from which data was used for origin computation | 11 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 88773081 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-04 19:14:42 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.3 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 90643281 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-05-31 00:55:06 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MILN.HNZ. | 2021-04-04T19:02:46.91 | 3.0 | undecidable | manual | Sn | -7.45 | 0 | |||
IV.VOBA.EHZ. | 2021-04-04T19:02:41.30 | 3.0 | undecidable | manual | Sn | -6.12 | 0 | |||
IV.ZONE.HHZ. | 2021-04-04T19:02:07.35 | 3.0 | positive | manual | Pg | 6.39 | 0 | |||
IV.SPS2.HHZ. | 2021-04-04T19:01:53.14 | 3.0 | positive | manual | Pg | 1.44 | 0 | |||
IV.RIBO.EHZ.01 | 2021-04-04T19:01:44.78 | 3.0 | undecidable | manual | Sg | -1.26 | 0 | |||
IV.ZCCA.HHZ. | 2021-04-04T19:01:37.83 | 3.0 | undecidable | manual | Pn | -2.02 | 0 | |||
IV.MF5.EHZ. | 2021-04-04T19:01:25.68 | 0.6 | undecidable | manual | S | 57 | 32.4453 | 98 | 0.62 | 41 |
IV.CSP1.EHZ. | 2021-04-04T19:01:24.34 | 0.6 | undecidable | manual | S | 12 | 30.0477 | 99 | 0.1 | 47 |
IV.LNSS.HNN. | 2021-04-04T19:01:23.28 | 0.3 | undecidable | manual | S | 196 | 25.8519 | 100 | 0.47 | 66 |
IV.CESI.HHZ. | 2021-04-04T19:01:23.29 | 0.6 | undecidable | manual | S | 318 | 26.751 | 100 | 0.18 | 47 |
IV.FDMO.HHZ. | 2021-04-04T19:01:22.32 | 0.6 | undecidable | manual | S | 352 | 23.4543 | 101 | 0.34 | 46 |
IV.T1299.EHE. | 2021-04-04T19:01:22.81 | 0.3 | undecidable | manual | S | 149 | 24.8529 | 100 | 0.34 | 68 |
IV.MTRA.EHZ. | 2021-04-04T19:01:21.91 | 0.3 | undecidable | manual | S | 109 | 23.3544 | 101 | -0.04 | 73 |
IV.MF5.EHZ. | 2021-04-04T19:01:20.25 | 0.1 | undecidable | manual | P | 57 | 32.4453 | 98 | -0.01 | 96 |
IV.MMO1.EHZ. | 2021-04-04T19:01:20.11 | 0.3 | undecidable | manual | S | 64 | 18.1707 | 104 | -0.08 | 73 |
IV.CSP1.EHZ. | 2021-04-04T19:01:19.39 | 0.3 | undecidable | manual | P | 12 | 30.0477 | 99 | -0.4 | 67 |
IV.RIBO.EHZ.01 | 2021-04-04T19:01:19.66 | 3.0 | negative | manual | Pn | -3.8 | 0 | |||
IV.SMA1.EHE. | 2021-04-04T19:01:18.88 | 0.3 | undecidable | manual | P | 142 | 27.6501 | 99 | -0.44 | 66 |
IV.MTRA.EHZ. | 2021-04-04T19:01:18.16 | 0.3 | undecidable | manual | P | 109 | 23.3544 | 101 | -0.31 | 69 |
IV.FDMO.HHZ. | 2021-04-04T19:01:18.28 | 0.3 | undecidable | manual | P | 352 | 23.4543 | 101 | -0.2 | 70 |
IV.LNSS.HNN. | 2021-04-04T19:01:18.98 | 0.3 | undecidable | manual | P | 196 | 25.8519 | 100 | 0.02 | 73 |
IV.MC2.EHZ. | 2021-04-04T19:01:18.24 | 0.6 | undecidable | manual | S | 28 | 10.6782 | 113 | 0.53 | 44 |
IV.T1299.EHE. | 2021-04-04T19:01:18.74 | 0.1 | undecidable | manual | P | 149 | 24.8529 | 100 | -0.03 | 97 |
IV.CESI.HHZ. | 2021-04-04T19:01:18.97 | 0.3 | undecidable | manual | P | 318 | 26.751 | 100 | -0.16 | 70 |
IV.PAOL.HHZ. | 2021-04-04T19:01:18.84 | 3.0 | undecidable | manual | Pn | -3.8 | 0 | |||
IV.MMO1.EHZ. | 2021-04-04T19:01:17.23 | 0.3 | undecidable | manual | P | 64 | 18.1707 | 104 | -0.22 | 71 |
IV.MC2.EHZ. | 2021-04-04T19:01:16.22 | 0.1 | undecidable | manual | P | 28 | 10.6782 | 113 | 0.2 | 96 |
IV.PTRJ.HNZ. | 2021-04-04T19:01:16.78 | 3.0 | undecidable | manual | Pn | -3.85 | 0 | |||
IV.NRCA.HHZ. | 2021-04-04T19:01:15.13 | 0.3 | undecidable | manual | S | 305 | 1.1988 | 165 | -0.19 | 73 |
IV.NRCA.HHZ. | 2021-04-04T19:01:14.57 | 0.1 | undecidable | manual | P | 305 | 1.1988 | 165 | -0.06 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.CESI.HHN. | ML:1.0 | 0.00006338424500000001 | 0.2816 | AML | other | m | 2021-04-04T19:01:23.65 |
IV.CESI.HHE. | ML:0.6 | 0.000024085505 | 1.1552 | AML | other | m | 2021-04-04T19:01:23.17 |
IV.FDMO.HHE. | ML:0.7 | 0.00003340911 | 1.7952 | AML | other | m | 2021-04-04T19:01:23.04 |
IV.FDMO.HHN. | ML:0.7 | 0.0000343206 | 0.2688 | AML | other | m | 2021-04-04T19:01:24.21 |
IV.CSP1.EHN. | ML:1.1 | 0.00006790347 | 0.4224 | AML | other | m | 2021-04-04T19:01:24.45 |
IV.CSP1.EHE. | ML:1.2 | 0.000077989795 | 0.384 | AML | other | m | 2021-04-04T19:01:25.80 |