A magnitude ML 1.7 earthquake occured in region: 3 km N Forlì (FC), on
and geographic coordinates (lat, lon) 44.2530, 12.0390 at 21 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 |
---|---|---|---|---|
Forlì | FC | 3 | 117913 | 117913 |
Forlimpopoli | FC | 10 | 13290 | 131203 |
Castrocaro Terme e Terra del Sole | FC | 11 | 6426 | 137629 |
Faenza | RA | 13 | 58541 | 196170 |
Russi | RA | 13 | 12247 | 208417 |
Bertinoro | FC | 14 | 11059 | 219476 |
Meldola | FC | 14 | 9970 | 229446 |
Cotignola | RA | 17 | 7474 | 236920 |
Predappio | FC | 17 | 6346 | 243266 |
Dovadola | FC | 19 | 1653 | 244919 |
Bagnacavallo | RA | 19 | 16739 | 261658 |
Solarolo | RA | 20 | 4488 | 266146 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
ML 1.7 | 2021-08-19 07:57:35 |
44.2533 | 12.0387 | 21 | 2021-12-29 11:12:32 |
Bollettino Sismico Italiano INGV | 95784441 |
Reviewed Rev100 |
ML 1.6 | 2021-08-19 07:57:36 |
44.2265 | 11.9817 | 20 | 2021-08-19 08:13:18 |
Sala Sismica INGV-Roma | 94364721 |
Field | Value |
---|---|
Time (UTC) | 2021-08-19 07:57:35 ± 0.19 |
Latitude | 44.2533 ± 0.0081 |
Longitude | 12.0387 ± 0.0151 |
Depth (km) | 21 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-INGV |
Event type | earthquake |
Origin ID | 95784441 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1009 |
Semi-minor axis of confidence ellipse (meter) | 884 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 257 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1010.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 284 |
Number of associated phases, regardless of their use for origin computation | 15 |
Number of defining phases | 15 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.23 |
Epicentral distance of station closest to the epicenter (degree) | 0.19695 |
Epicentral distance of station farthest from the epicenter (degree) | 0.56298 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.6 |
Uncertainty | 0.3 |
Num. used stations | 16 |
Type of magnitude | ML |
Reference to an origin | 94364721 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-19 08:13:18 |
Field | Value |
---|---|
Value | 1.7 |
Uncertainty | 0.2 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 95784441 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2021-09-23 12:22:10 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.RUFI.EHZ. | 2021-08-19T07:57:54.52 | 0.3 | undecidable | manual | S | 223 | 62.493 | 101 | -0.05 | 72 |
IV.SEI.HHZ. | 2021-08-19T07:57:53.49 | 0.6 | undecidable | manual | S | 248 | 58.497 | 102 | -0.03 | 49 |
IV.ASQU.HHZ. | 2021-08-19T07:57:52.86 | 0.6 | undecidable | manual | S | 202 | 54.4011 | 104 | 0.39 | 46 |
IV.VISG.HHZ. | 2021-08-19T07:57:51.40 | 0.3 | undecidable | manual | S | 262 | 48.618 | 106 | 0.44 | 69 |
IV.SFI.EHZ. | 2021-08-19T07:57:49.23 | 0.3 | undecidable | manual | S | 202 | 41.5251 | 109 | 0.06 | 76 |
IV.RUFI.EHZ. | 2021-08-19T07:57:46.32 | 0.3 | undecidable | manual | P | 223 | 62.493 | 101 | -0.05 | 72 |
IV.LMD.HHZ. | 2021-08-19T07:57:46.41 | 0.3 | undecidable | manual | S | 234 | 32.8449 | 115 | -0.59 | 67 |
IV.ASQU.HHZ. | 2021-08-19T07:57:45.23 | 0.1 | undecidable | manual | P | 202 | 54.4011 | 104 | 0.08 | 98 |
IV.SEI.HHZ. | 2021-08-19T07:57:45.83 | 0.3 | undecidable | manual | P | 248 | 58.497 | 102 | 0.07 | 73 |
IV.BRIS.HHZ. | 2021-08-19T07:57:44.53 | 0.3 | undecidable | manual | S | 262 | 21.867 | 127 | 0.05 | 78 |
IV.VISG.HHZ. | 2021-08-19T07:57:44.18 | 0.1 | undecidable | manual | P | 262 | 48.618 | 106 | -0.1 | 98 |
IV.MTRZ.HNE. | 2021-08-19T07:57:44.07 | 0.3 | undecidable | manual | P | 278 | 49.2174 | 105 | -0.31 | 71 |
IV.SFI.EHZ. | 2021-08-19T07:57:43.33 | 0.1 | positive | manual | P | 202 | 41.5251 | 109 | 0.08 | 100 |
IV.LMD.HHZ. | 2021-08-19T07:57:41.74 | 0.1 | positive | manual | P | 234 | 32.8449 | 115 | -0.25 | 98 |
IV.BRIS.HHZ. | 2021-08-19T07:57:40.78 | 0.1 | positive | manual | P | 262 | 21.867 | 127 | 0.24 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.BRIS.HHN. | ML:2.2 | 0.0007815789499999999 | 0.384 | AML | other | m | 2021-08-19T07:57:44.81 |
IV.SFI.EHN. | ML:1.8 | 0.00017549999999999998 | 0.98 | AML | other | m | 2021-08-19T07:57:49.90 |
IV.SFI.EHE. | ML:1.8 | 0.000188 | 0.38 | AML | other | m | 2021-08-19T07:57:50.24 |
IV.VISG.HHE. | ML:1.4 | 0.000057999999999999994 | 1.34 | AML | other | m | 2021-08-19T07:57:52.26 |
IV.VISG.HHN. | ML:1.5 | 0.0000811 | 0.24 | AML | other | m | 2021-08-19T07:57:52.32 |
IV.ASQU.HHE. | ML:1.6 | 0.00008579999999999998 | 0.44 | AML | other | m | 2021-08-19T07:57:53.38 |
IV.SEI.HHN. | ML:1.8 | 0.00013637194999999998 | 1.7152 | AML | other | m | 2021-08-19T07:57:53.76 |
IV.ASQU.HHN. | ML:1.3 | 0.000038954015 | 0.48 | AML | other | m | 2021-08-19T07:57:53.14 |
IV.SEI.HHE. | ML:1.6 | 0.000085014335 | 0.3008 | AML | other | m | 2021-08-19T07:57:53.72 |
IV.SFI.HNN. | ML:1.8 | 0.00020010430000000001 | 0.3008 | AML | other | m | 2021-08-19T07:57:50.04 |
IV.SFI.HNE. | ML:1.8 | 0.00017860565 | 0.8768 | AML | other | m | 2021-08-19T07:57:50.30 |
IV.RUFI.EHN. | ML:1.3 | 0.000041493395000000005 | 1.8816 | AML | other | m | 2021-08-19T07:57:56.05 |