Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 27-11-2018 and time 23:05:41 (Italy) in region 2 km W Accumoli (RI)

A magnitude ML 2.1 earthquake occured in region: 2 km W Accumoli (RI), on

  • 27-11-2018 22:05:41 (UTC)
  • 27-11-2018 23:05:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.23 at 10 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
Accumoli RI 2 667 667
Amatrice RI 10 2657 3324
Arquata del Tronto AP 10 1178 4502
Cittareale RI 11 482 4984
Norcia PG 15 4957 9941
Acquasanta Terme AP 17 2916 12857
Cascia PG 17 3217 16074
Montegallo AP 18 523 16597
Montereale AQ 20 2581 19178
Campotosto AQ 20 542 19720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 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
Rev 1000 ML 2.1 2018-11-27
22:05:41		 42.7 13.23 10 2019-06-04
09:16:08		 Bollettino Sismico Italiano INGV 64898691
Rev 100 ML 1.9 2018-11-27
22:05:41		 42.7 13.23 10 2018-11-27
22:15:28		 Sala Sismica INGV-Roma 63435571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-27 22:05:41 ± 0.05
Latitude 42.70 ± 0.00
Longitude 13.23 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 64898691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 368
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.82198
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 24
Type of magnitude ML
Reference to an origin 64898691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-28 11:04:12

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 63435571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-27 22:15:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VITU.HHZ. 2018-11-27T22:06:40.83 3.0 undecidable manual Sg 4.76 0
IV.VITU.HHZ. 2018-11-27T22:06:12.13 3.0 undecidable manual Pn 0.17 0
IV.RIBO.EHZ.01 2018-11-27T22:06:11.91 3.0 undecidable manual Pg 2.95 0
IV.BRSN.EHZ. 2018-11-27T22:06:10.85 3.0 positive manual Pn -0.33 0
IV.ASSB.HHZ. 2018-11-27T22:06:00.49 0.3 undecidable manual S 309 0.5369 50 0.54 62
IV.ARVD.HHZ. 2018-11-27T22:05:57.40 0.3 undecidable manual P 345 0.822 50 0.47 60
IV.FIAM.HHZ. 2018-11-27T22:05:57.12 0.3 undecidable manual S 191 0.4416 50 -0.01 71
IV.PF6.EHZ. 2018-11-27T22:05:56.89 0.3 undecidable manual S 357 0.4362 50 -0.07 70
IV.GUMA.HHZ. 2018-11-27T22:05:55.64 0.3 undecidable manual S 12 0.3687 50 0.66 61
IV.CESI.HHZ. 2018-11-27T22:05:55.45 0.3 undecidable manual S 322 0.3831 50 0.05 71
IV.GIGS.HHZ. 2018-11-27T22:05:54.09 0.3 undecidable manual S 134 0.3561 50 -0.52 65
IV.FDMO.HHZ. 2018-11-27T22:05:54.41 0.3 undecidable manual S 343 0.3489 50 0.02 72
IV.ARRO.EHZ. 2018-11-27T22:05:54.73 0.3 undecidable manual S 250 0.3606 50 0.01 72
IV.MF5.EHZ. 2018-11-27T22:05:54.70 0.3 undecidable manual S 31 0.3327 50 0.8 58
IV.T0110.HHZ. 2018-11-27T22:05:53.86 0.1 undecidable manual P 139 0.6232 50 0.34 85
IV.EL6.EHZ. 2018-11-27T22:05:53.70 0.3 undecidable manual P 352 0.6331 50 0.01 68
IV.ASSB.HHZ. 2018-11-27T22:05:52.05 0.3 undecidable manual P 309 0.5369 50 0 70
IV.FEMA.HNZ. 2018-11-27T22:05:52.38 0.6 undecidable manual S 334 0.2896 50 -0.26 46
IV.SNTG.HHZ. 2018-11-27T22:05:52.88 0.3 undecidable manual P 339 0.5909 50 -0.08 68
IV.TERO.HHZ. 2018-11-27T22:05:51.89 0.3 undecidable manual S 106 0.2887 50 -0.71 61
IV.OFFI.HHZ. 2018-11-27T22:05:50.59 0.1 undecidable manual P 55 0.4092 50 0.73 79
IV.GAVE.EHZ. 2018-11-27T22:05:50.98 0.3 undecidable manual S 268 0.2437 109 -0.24 70
IV.FIAM.HHZ. 2018-11-27T22:05:50.29 0.1 undecidable manual P 191 0.4416 50 -0.13 93
IV.MC2.EHZ. 2018-11-27T22:05:49.84 0.3 undecidable manual S 353 0.2104 112 -0.17 72
IV.PF6.EHZ. 2018-11-27T22:05:49.96 0.1 undecidable manual P 357 0.4362 50 -0.36 88
IV.CESI.HHZ. 2018-11-27T22:05:49.21 0.1 undecidable manual P 322 0.3831 50 -0.21 92
IV.CAMP.HHZ. 2018-11-27T22:05:49.84 0.3 undecidable manual S 141 0.214 112 -0.29 70
IV.GUMA.HHZ. 2018-11-27T22:05:49.27 0.1 undecidable manual P 12 0.3687 50 0.1 94
IV.RM33.EHZ. 2018-11-27T22:05:49.13 0.6 undecidable manual S 183 0.1934 114 -0.27 47
IV.MMO1.EHZ. 2018-11-27T22:05:49.62 0.3 undecidable manual S 21 0.2104 112 -0.38 69
IV.ARRO.EHZ. 2018-11-27T22:05:48.90 0.3 undecidable manual P 250 0.3606 50 -0.13 70
IV.LNSS.HHZ. 2018-11-27T22:05:48.76 0.3 undecidable manual S 234 0.1691 117 0.21 72
IV.MF5.EHZ. 2018-11-27T22:05:48.75 0.1 undecidable manual P 31 0.3327 50 0.19 93
IV.GIGS.HHZ. 2018-11-27T22:05:48.62 0.1 undecidable manual P 134 0.3561 50 -0.35 90
IV.FDMO.HHZ. 2018-11-27T22:05:48.77 0.3 undecidable manual P 343 0.3489 50 -0.06 72
IV.SMA1.EHZ. 2018-11-27T22:05:47.07 0.3 undecidable manual S 132 0.1079 129 0.51 68
IV.FEMA.HNZ. 2018-11-27T22:05:47.66 0.3 undecidable manual P 334 0.2896 50 -0.17 71
IV.MTRA.EHZ. 2018-11-27T22:05:47.17 0.3 undecidable manual S 66 0.1367 122 -0.29 71
IV.TERO.HHZ. 2018-11-27T22:05:47.42 0.1 undecidable manual P 106 0.2887 50 -0.38 90
IV.NRCA.HNZ. 2018-11-27T22:05:47.75 0.3 undecidable manual S 328 0.1547 119 -0.32 71
IV.RM33.EHZ. 2018-11-27T22:05:46.10 0.3 undecidable manual P 183 0.1934 114 0.14 73
IV.GAVE.EHZ. 2018-11-27T22:05:46.82 0.1 undecidable manual P 268 0.2437 109 -0.18 95
IV.MMO1.EHZ. 2018-11-27T22:05:46.10 0.1 undecidable manual P 21 0.2104 112 -0.2 95
IV.MC2.EHZ. 2018-11-27T22:05:46.25 0.1 undecidable manual P 353 0.2104 112 -0.06 98
IV.T1299.HNZ. 2018-11-27T22:05:46.18 0.3 undecidable manual S 149 0.0791 137 0.42 70
IV.CAMP.HHZ. 2018-11-27T22:05:46.28 0.1 undecidable manual P 141 0.214 112 -0.1 97
IV.NRCA.HNZ. 2018-11-27T22:05:45.15 0.1 undecidable manual P 328 0.1547 119 -0.04 100
IV.LNSS.HHZ. 2018-11-27T22:05:45.65 0.1 undecidable manual P 234 0.1691 117 0.18 96
IV.MTRA.EHZ. 2018-11-27T22:05:44.80 0.1 undecidable manual P 66 0.1367 122 -0.04 100
IV.SMA1.EHZ. 2018-11-27T22:05:44.53 0.1 undecidable manual P 132 0.1079 129 0.22 97
IV.T1299.HNZ. 2018-11-27T22:05:44.29 0.1 undecidable manual P 149 0.0791 137 0.43 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:2.2 0.00153 0.3 AML other m 2018-11-27T22:05:47.96
IV.MTRA.EHN. ML:2 0.0008914634 0.2432 AML other m 2018-11-27T22:05:47.81
IV.SMA1.EHN. ML:1.8 0.0007081488 0.2304 AML other m 2018-11-27T22:05:47.97
IV.NRCA.HHN. ML:2.4 0.002255 0.08 AML other m 2018-11-27T22:05:48.05
IV.NRCA.HNN. ML:2.4 0.00205 0.08 AML other m 2018-11-27T22:05:48.01
IV.SMA1.EHE. ML:1.5 0.00036028665 0.0896 AML other m 2018-11-27T22:05:48.22
IV.NRCA.HNE. ML:2.4 0.002245 1.36 AML other m 2018-11-27T22:05:48.68
IV.NRCA.HHE. ML:2.4 0.002405 1.36 AML other m 2018-11-27T22:05:48.68
IV.LNSS.HHN. ML:2.2 0.0014 1.66 AML other m 2018-11-27T22:05:48.15
IV.LNSS.HNE. ML:2.3 0.001775 1.7 AML other m 2018-11-27T22:05:49.86
IV.LNSS.HHE. ML:2.3 0.00177 1.68 AML other m 2018-11-27T22:05:49.86
IV.LNSS.HNN. ML:2.2 0.001355 0.68 AML other m 2018-11-27T22:05:49.07
IV.CAMP.HHE. ML:1.6 0.0002715 0.52 AML other m 2018-11-27T22:05:50.28
IV.CAMP.HHN. ML:1.1 8.006986E-5 0.2432 AML other m 2018-11-27T22:05:50.96
IV.GAVE.HNE. ML:2.3 0.0011020689 0.2176 AML other m 2018-11-27T22:05:51.76
IV.GAVE.EHE. ML:2.3 0.0010965 0.22 AML other m 2018-11-27T22:05:51.76
IV.GAVE.EHN. ML:2.2 0.000798 0.22 AML other m 2018-11-27T22:05:52.85
IV.CESI.HHE. ML:1.3 6.765031E-5 0.0768 AML other m 2018-11-27T22:05:55.61
IV.FDMO.HHE. ML:1.7 0.000165 0.92 AML other m 2018-11-27T22:05:55.32
IV.GUMA.HHN. ML:2.3 0.000723 0.4 AML other m 2018-11-27T22:05:56.00
IV.GUMA.HNE. ML:2.2 0.0006419439 0.4096 AML other m 2018-11-27T22:05:56.11
IV.CESI.HHN. ML:0 0.000196 1.02 AML other m 2018-11-27T22:05:56.14
IV.FDMO.HHN. ML:1.3 7.1986135E-5 0.2176 AML other m 2018-11-27T22:05:56.30
IV.FIAM.HHE. ML:1.6 9.685E-5 0.88 AML other m 2018-11-27T22:05:57.75
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download