Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 27-08-2020 and time 17:12:57 (Italy) in region 1 km W Sarnano (MC)

A magnitude ML 1.5 earthquake occured in region: 1 km W Sarnano (MC), on

  • 27-08-2020 15:12:57 (UTC)
  • 27-08-2020 17:12:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0330, 13.2860 at 25 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sarnano MC 1 3264 3264
Gualdo MC 6 815 4079
Bolognola MC 6 142 4221
Amandola FM 8 3629 7850
Cessapalombo MC 9 512 8362
San Ginesio MC 9 3498 11860
Acquacanina MC 9 121 11981
Fiastra MC 11 559 12540
Montefortino FM 11 1178 13718
Camporotondo di Fiastrone MC 11 563 14281
Penna San Giovanni MC 12 1108 15389
Sant'Angelo in Pontano MC 12 1436 16825
Monte San Martino MC 13 765 17590
Caldarola MC 13 1823 19413
Comunanza AP 13 3166 22579
Smerillo FM 13 365 22944
Ripe San Ginesio MC 14 852 23796
Montefalcone Appennino FM 15 424 24220
Montemonaco AP 15 604 24824
Belforte del Chienti MC 15 1886 26710
Ussita MC 15 444 27154
Colmurano MC 16 1263 28417
Fiordimonte MC 16 202 28619
Pievebovigliana MC 17 866 29485
Santa Vittoria in Matenano FM 17 1330 30815
Falerone FM 18 3337 34152
Servigliano FM 18 2336 36488
Serrapetrona MC 18 966 37454
Loro Piceno MC 18 2401 39855
Force AP 19 1354 41209
Castelsantangelo sul Nera MC 19 281 41490
Montappone FM 19 1682 43172
Monte Vidon Corrado FM 19 731 43903
Pieve Torina MC 19 1458 45361
Tolentino MC 20 20069 65430
Visso MC 20 1107 66537
Urbisaglia MC 20 2628 69165
Monteleone di Fermo FM 20 395 69560

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
68 Km S of Ancona (100861 inhabitants)
73 Km E of Perugia (166134 inhabitants)
74 Km NE of Terni (111501 inhabitants)
76 Km N of L'Aquila (69753 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
93 Km S of Fano (60888 inhabitants)
99 Km NW of Pescara (121014 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2020-08-27
15:12:57		 43.0332 13.2857 25 2020-11-19
12:37:01		 Bollettino Sismico Italiano INGV 82910151
Reviewed
Rev100 		ML 1.6 2020-08-27
15:12:57		 43.0267 13.2808 25 2020-08-27
15:23:53		 Sala Sismica INGV-Roma 82380381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-27 15:12:57 ± 0.12
Latitude 43.0332 ± 0.0045
Longitude 13.2857 ± 0.0086
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82910151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 575
Semi-minor axis of confidence ellipse (meter) 516
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.52610
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 82380381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-27 15:23:53

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 82910151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-14 21:27:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-08-27T15:13:08.00 0.3 undecidable manual S 212 26.1516 127 -0.13 71
IV.RM33.EHZ. 2020-08-27T15:13:07.78 0.3 undecidable manual P 186 58.3971 106 -0.3 66
IV.FEMA.HNE. 2020-08-27T15:13:07.53 0.6 undecidable manual S 248 20.6682 135 0.5 45
IV.TERO.HHZ. 2020-08-27T15:13:06.77 0.6 undecidable manual P 150 52.4031 108 -0.42 44
IV.FDMO.HHZ. 2020-08-27T15:13:06.20 0.3 undecidable manual S 271 16.0728 143 -0.02 74
IV.MF5.EHZ. 2020-08-27T15:13:06.10 0.3 undecidable manual S 110 14.9739 145 0.05 73
IV.MC2.EHZ. 2020-08-27T15:13:06.30 0.3 undecidable manual S 210 15.5733 144 0.15 73
IV.GUMA.HHZ. 2020-08-27T15:13:05.00 0.6 undecidable manual S 51 5.1948 167 0.04 50
IV.EL6.EHZ. 2020-08-27T15:13:05.13 0.6 undecidable manual P 336 36.0417 118 0.26 46
IV.PF6.EHN. 2020-08-27T15:13:05.65 0.3 undecidable manual S 328 13.7751 147 -0.22 72
IV.CSP1.EHZ. 2020-08-27T15:13:05.20 0.3 undecidable manual S 315 9.1797 157 -0.1 74
IV.FEMA.HNE. 2020-08-27T15:13:03.23 0.3 undecidable manual P 248 20.6682 135 0.29 70
IV.MNTT.EHZ. 2020-08-27T15:13:03.78 0.6 undecidable manual P 83 25.3524 128 0.3 46
IV.NRCA.HHZ. 2020-08-27T15:13:03.50 0.3 undecidable manual P 212 26.1516 127 -0.08 73
IV.PF6.EHN. 2020-08-27T15:13:02.11 0.3 undecidable manual P 328 13.7751 147 -0.16 73
IV.MC2.EHZ. 2020-08-27T15:13:02.52 0.3 undecidable manual P 210 15.5733 144 0.09 74
IV.FDMO.HHZ. 2020-08-27T15:13:02.43 0.1 undecidable manual P 271 16.0728 143 -0.05 99
IV.MF5.EHZ. 2020-08-27T15:13:02.41 0.3 undecidable manual P 110 14.9739 145 0.03 74
IV.GUMA.HHZ. 2020-08-27T15:13:01.76 0.6 positive manual P 51 5.1948 167 0.01 51
IV.CSP1.EHZ. 2020-08-27T15:13:01.88 0.1 undecidable manual P 315 9.1797 157 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHN. ML:1.8 0.00039400000000000004 0.38 AML other m 2020-08-27T15:13:05.14
IV.GUMA.HHE. ML:1.7 0.000303 0.54 AML other m 2020-08-27T15:13:05.16
IV.MF5.EHN. ML:1.7 0.00030000000000000003 0.12 AML other m 2020-08-27T15:13:06.31
IV.MF5.EHE. ML:1.4 0.000152 0.12 AML other m 2020-08-27T15:13:06.23
IV.FDMO.HHE. ML:1.2 0.00007825 0.5 AML other m 2020-08-27T15:13:06.40
IV.FDMO.HHN. ML:1.0 0.00005434999999999999 0.46 AML other m 2020-08-27T15:13:06.56
IV.NRCA.HHE. ML:1.8 0.00025550000000000003 0.14 AML other m 2020-08-27T15:13:08.76
IV.NRCA.HHN. ML:1.6 0.0001495 0.1 AML other m 2020-08-27T15:13:08.77
IV.GUMA.HNE. ML:1.7 0.00032953625 0.192 AML other m 2020-08-27T15:13:05.51
IV.CSP1.EHE. ML:1.0 0.000061676215 0.0896 AML other m 2020-08-27T15:13:05.48
IV.CSP1.EHN. ML:1.0 0.00006273915000000002 0.1792 AML other m 2020-08-27T15:13:05.35
IV.NRCA.HNN. ML:1.5 0.00014141033999999999 0.0896 AML other m 2020-08-27T15:13:08.72
IV.NRCA.HNE. ML:1.7 0.00021732984999999998 0.1152 AML other m 2020-08-27T15:13:08.63
IV.RM33.EHE. ML:0.7 0.0000123218445 0.1792 AML other m 2020-08-27T15:13:18.18
IV.RM33.EHN. ML:1.0 0.000018400874999999997 0.3968 AML other m 2020-08-27T15:13:16.95
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download