A magnitude ML 2.1 earthquake occured in region: 2 km SE Sant'Alfio (CT), on
and geographic coordinates (lat, lon) 37.7260, 15.1570 at 17 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 |
---|---|---|---|---|
Sant'Alfio | CT | 2 | 1582 | 1582 |
Giarre | CT | 3 | 27659 | 29241 |
Milo | CT | 4 | 1087 | 30328 |
Riposto | CT | 4 | 14838 | 45166 |
Santa Venerina | CT | 5 | 8592 | 53758 |
Mascali | CT | 5 | 14282 | 68040 |
Zafferana Etnea | CT | 6 | 9517 | 77557 |
Fiumefreddo di Sicilia | CT | 9 | 9623 | 87180 |
Piedimonte Etneo | CT | 9 | 3963 | 91143 |
Acireale | CT | 13 | 52622 | 143765 |
Calatabiano | CT | 13 | 5308 | 149073 |
Linguaglossa | CT | 13 | 5403 | 154476 |
Aci Sant'Antonio | CT | 14 | 17984 | 172460 |
Aci Catena | CT | 14 | 29851 | 202311 |
Trecastagni | CT | 14 | 10910 | 213221 |
Viagrande | CT | 14 | 8563 | 221784 |
Pedara | CT | 15 | 14102 | 235886 |
Aci Bonaccorsi | CT | 15 | 3524 | 239410 |
Gaggi | ME | 16 | 3184 | 242594 |
Valverde | CT | 17 | 7840 | 250434 |
Giardini-Naxos | ME | 17 | 9415 | 259849 |
Nicolosi | CT | 17 | 7463 | 267312 |
San Giovanni la Punta | CT | 17 | 23060 | 290372 |
Castiglione di Sicilia | CT | 18 | 3215 | 293587 |
Taormina | ME | 18 | 10960 | 304547 |
Castelmola | ME | 18 | 1088 | 305635 |
Tremestieri Etneo | CT | 18 | 20589 | 326224 |
San Gregorio di Catania | CT | 18 | 11966 | 338190 |
Aci Castello | CT | 19 | 18723 | 356913 |
Motta Camastra | ME | 19 | 845 | 357758 |
Mascalucia | CT | 19 | 31958 | 389716 |
Graniti | ME | 20 | 1492 | 391208 |
Sant'Agata li Battiati | CT | 20 | 9479 | 400687 |
Francavilla di Sicilia | ME | 20 | 3945 | 404632 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 2.1 | 2021-04-29 17:14:17 |
37.7262 | 15.1573 | 17 | 2021-07-12 16:55:16 |
Bollettino Sismico Italiano INGV | 91657851 |
Reviewed Rev200 |
ML 1.7 | 2021-04-29 17:14:16 |
37.735 | 15.108 | 17 | 2021-06-21 13:28:31 |
Sala Operativa INGV_OE (Catania) | 89602591 |
Field | Value |
---|---|
Time (UTC) | 2021-04-29 17:14:17 ± 0.12 |
Latitude | 37.7262 ± 0.0045 |
Longitude | 15.1573 ± 0.0091 |
Depth (km) | 17 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 91657851 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 632 |
Semi-minor axis of confidence ellipse (meter) | 540 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 286 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 630.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 122 |
Number of associated phases, regardless of their use for origin computation | 38 |
Number of defining phases | 38 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.29 |
Epicentral distance of station closest to the epicenter (degree) | 0.03417 |
Epicentral distance of station farthest from the epicenter (degree) | 0.76622 |
Number of stations at which the event was observed | 22 |
Number of stations from which data was used for origin computation | 22 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | 0.3 |
Num. used stations | 20 |
Type of magnitude | ML |
Reference to an origin | 91657851 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-06-21 13:27:16 |
Field | Value |
---|---|
Value | 1.7 |
Uncertainty | 0.1 |
Num. used stations | |
Type of magnitude | ML |
Reference to an origin | 89602591 |
Agency | INGV |
Autore | Sala Operativa INGV_OE (Catania) |
Time of creation (UTC) | 2021-04-29 17:22:19 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.HAVL.HHZ. | 2021-04-29T17:14:43.12 | 0.6 | undecidable | manual | S | 182 | 85.0482 | 95 | 0.82 | 35 |
IV.HCRL.HHZ. | 2021-04-29T17:14:33.53 | 0.6 | undecidable | manual | S | 193 | 50.3163 | 99 | 0.44 | 43 |
IV.HAVL.HHZ. | 2021-04-29T17:14:31.32 | 0.3 | undecidable | manual | P | 182 | 85.0482 | 95 | -0.32 | 61 |
IV.AIO.HHZ. | 2021-04-29T17:14:27.78 | 0.6 | undecidable | manual | S | 14 | 27.9498 | 110 | 0.49 | 44 |
IV.HCRL.HHZ. | 2021-04-29T17:14:25.95 | 0.3 | undecidable | manual | P | 193 | 50.3163 | 99 | -0.37 | 65 |
IV.EMPL.HHZ. | 2021-04-29T17:14:24.40 | 0.6 | undecidable | manual | S | 252 | 17.2716 | 126 | -0.34 | 46 |
IV.ENIC.HHE. | 2021-04-29T17:14:24.76 | 0.3 | undecidable | manual | S | 229 | 15.873 | 129 | 0.31 | 70 |
IV.EMCN.HHN. | 2021-04-29T17:14:24.41 | 0.6 | undecidable | manual | S | 304 | 13.0758 | 135 | 0.52 | 45 |
IV.ESLN.HHZ. | 2021-04-29T17:14:24.12 | 0.3 | undecidable | manual | S | 257 | 16.4724 | 127 | -0.46 | 68 |
IV.ECBD.HHN. | 2021-04-29T17:14:24.14 | 0.6 | undecidable | manual | S | 314 | 8.6802 | 148 | 0.98 | 37 |
IV.ECTS.HHZ. | 2021-04-29T17:14:24.74 | 0.3 | undecidable | manual | S | 350 | 17.5713 | 125 | -0.08 | 73 |
IV.EVRN.HHZ. | 2021-04-29T17:14:23.12 | 0.3 | undecidable | manual | S | 205 | 4.4955 | 163 | 0.42 | 69 |
IV.EMFO.HHE. | 2021-04-29T17:14:23.12 | 0.6 | undecidable | manual | S | 280 | 5.994 | 157 | 0.28 | 48 |
IV.EPIT.HHZ. | 2021-04-29T17:14:23.96 | 0.6 | undecidable | manual | S | 317 | 12.9759 | 136 | 0.09 | 49 |
IV.ESPC.HHN. | 2021-04-29T17:14:23.43 | 0.3 | undecidable | manual | S | 252 | 11.9769 | 138 | -0.27 | 71 |
IV.EFIU.HHZ. | 2021-04-29T17:14:23.25 | 0.3 | undecidable | manual | S | 33 | 8.4804 | 149 | 0.12 | 74 |
IV.NOV.HHZ. | 2021-04-29T17:14:23.78 | 0.3 | undecidable | manual | P | 357 | 33.5442 | 106 | 0 | 72 |
IV.EPZF.HHZ. | 2021-04-29T17:14:23.40 | 0.3 | undecidable | manual | P | 293 | 28.4493 | 110 | 0.35 | 68 |
IV.EMFS.HHE. | 2021-04-29T17:14:23.94 | 0.3 | undecidable | manual | S | 267 | 13.9749 | 133 | -0.13 | 73 |
IV.AIO.HHZ. | 2021-04-29T17:14:22.73 | 0.1 | undecidable | manual | P | 14 | 27.9498 | 110 | -0.24 | 93 |
IV.ESAL.HHZ. | 2021-04-29T17:14:22.20 | 0.3 | undecidable | manual | S | 328 | 3.7962 | 165 | -0.45 | 70 |
IV.EMSG.HHZ. | 2021-04-29T17:14:22.30 | 0.1 | negative | manual | P | 300 | 20.9679 | 119 | 0.31 | 93 |
IV.ECTS.HHZ. | 2021-04-29T17:14:21.23 | 0.1 | undecidable | manual | P | 350 | 17.5713 | 125 | -0.31 | 93 |
IV.ECNE.HHN. | 2021-04-29T17:14:21.61 | 0.3 | undecidable | manual | P | 288 | 14.2746 | 132 | 0.46 | 68 |
IV.EMPL.HHZ. | 2021-04-29T17:14:21.17 | 0.3 | undecidable | manual | P | 252 | 17.2716 | 126 | -0.33 | 69 |
IV.ENIC.HHE. | 2021-04-29T17:14:21.96 | 0.3 | undecidable | manual | P | 229 | 15.873 | 129 | 0.63 | 64 |
IV.EMCN.HHN. | 2021-04-29T17:14:21.03 | 0.3 | undecidable | manual | P | 304 | 13.0758 | 135 | 0.02 | 75 |
IV.EPIT.HHZ. | 2021-04-29T17:14:21.14 | 0.1 | negative | manual | P | 317 | 12.9759 | 136 | 0.14 | 97 |
IV.EMNR.HHZ. | 2021-04-29T17:14:21.44 | 0.1 | undecidable | manual | P | 311 | 15.2736 | 130 | 0.18 | 96 |
IV.ESAL.HHZ. | 2021-04-29T17:14:20.21 | 0.1 | negative | manual | P | 328 | 3.7962 | 165 | -0.08 | 100 |
IV.EPOZ.HHZ. | 2021-04-29T17:14:20.49 | 0.1 | undecidable | manual | P | 155 | 6.5934 | 155 | 0.05 | 100 |
IV.ECBD.HHN. | 2021-04-29T17:14:20.51 | 0.1 | undecidable | manual | P | 314 | 8.6802 | 148 | -0.08 | 99 |
IV.EMFS.HHE. | 2021-04-29T17:14:20.80 | 0.3 | undecidable | manual | P | 267 | 13.9749 | 133 | -0.31 | 70 |
IV.EVRN.HHZ. | 2021-04-29T17:14:20.21 | 0.3 | undecidable | manual | P | 205 | 4.4955 | 163 | -0.11 | 74 |
IV.EMFO.HHE. | 2021-04-29T17:14:20.25 | 0.1 | undecidable | manual | P | 280 | 5.994 | 157 | -0.15 | 98 |
IV.ESPC.HHN. | 2021-04-29T17:14:20.55 | 0.1 | undecidable | manual | P | 252 | 11.9769 | 138 | -0.35 | 93 |
IV.EFIU.HHZ. | 2021-04-29T17:14:20.32 | 0.3 | undecidable | manual | P | 33 | 8.4804 | 149 | -0.25 | 72 |
IV.ESLN.HHZ. | 2021-04-29T17:14:20.99 | 0.3 | undecidable | manual | P | 257 | 16.4724 | 127 | -0.42 | 68 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.ESAL.HHN. | ML:2.1 | 0.0013399999999999998 | 0.16 | AML | other | m | 2021-04-29T17:14:22.62 |
IV.EVRN.HNN. | ML:2.5 | 0.00326 | 0.32 | AML | other | m | 2021-04-29T17:14:23.31 |
IV.EVRN.HNE. | ML:2.5 | 0.003255 | 0.84 | AML | other | m | 2021-04-29T17:14:23.44 |
IV.EVRN.HHE. | ML:2.6 | 0.00396 | 0.8 | AML | other | m | 2021-04-29T17:14:23.45 |
IV.ESAL.HHE. | ML:2.3 | 0.00217 | 0.24 | AML | other | m | 2021-04-29T17:14:23.55 |
IV.EFIU.HHE. | ML:1.8 | 0.0005895000000000001 | 1.12 | AML | other | m | 2021-04-29T17:14:23.87 |
IV.EFIU.HHN. | ML:1.9 | 0.000746 | 0.36 | AML | other | m | 2021-04-29T17:14:23.98 |
IV.EPOZ.HHE. | ML:1.9 | 0.0007124999999999999 | 1.4 | AML | other | m | 2021-04-29T17:14:24.06 |
IV.EPOZ.HHN. | ML:1.9 | 0.00079 | 0.34 | AML | other | m | 2021-04-29T17:14:26.21 |
IV.EMPL.HHN. | ML:2.3 | 0.0014049999999999998 | 0.18 | AML | other | m | 2021-04-29T17:14:26.50 |
IV.EPIT.HHN. | ML:2.3 | 0.0014750000000000002 | 0.36 | AML | other | m | 2021-04-29T17:14:26.51 |
IV.EMSG.HHN. | ML:1.9 | 0.000518 | 0.2 | AML | other | m | 2021-04-29T17:14:26.90 |
IV.EVRN.HHN. | ML:2.3 | 0.001985 | 1.22 | AML | other | m | 2021-04-29T17:14:27.90 |
IV.EPIT.HHE. | ML:2.1 | 0.0009265 | 0.42 | AML | other | m | 2021-04-29T17:14:28.44 |
IV.AIO.HHE. | ML:1.8 | 0.00027600000000000004 | 0.22 | AML | other | m | 2021-04-29T17:14:28.76 |
IV.AIO.HHN. | ML:1.6 | 0.000182 | 0.24 | AML | other | m | 2021-04-29T17:14:28.93 |
IV.EMSG.HHE. | ML:1.8 | 0.00040800000000000005 | 0.56 | AML | other | m | 2021-04-29T17:14:31.53 |
IV.EMPL.HHE. | ML:2.1 | 0.000946 | 0.18 | AML | other | m | 2021-04-29T17:14:31.27 |
IV.EPZF.HHE. | ML:1.8 | 0.0002545 | 0.32 | AML | other | m | 2021-04-29T17:14:31.61 |
IV.EPZF.HHN. | ML:1.9 | 0.00035499999999999996 | 0.32 | AML | other | m | 2021-04-29T17:14:31.59 |