Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 27-04-2023 and time 07:31:27 (Italy) in region 7 km NE Rocca Santa Maria (TE)

A magnitude ML 1.8 earthquake occured in region: 7 km NE Rocca Santa Maria (TE), on

  • 27-04-2023 05:31:27 (UTC)
  • 27-04-2023 07:31:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7180, 13.5990 at 15 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
Rocca Santa Maria TE 7 537 537
Campli TE 7 7209 7746
Torricella Sicura TE 8 2641 10387
Civitella del Tronto TE 8 5116 15503
Valle Castellana TE 8 977 16480
Teramo TE 11 54892 71372
Folignano AP 12 9241 80613
Cortino TE 13 656 81269
Maltignano AP 15 2401 83670
Montorio al Vomano TE 15 8218 91888
Ascoli Piceno AP 15 49407 141295
Sant'Egidio alla Vibrata TE 16 9811 151106
Acquasanta Terme AP 16 2916 154022
Bellante TE 17 7152 161174
Ancarano TE 18 1857 163031
Basciano TE 18 2434 165465
Sant'Omero TE 18 5243 170708
Castellalto TE 19 7513 178221
Canzano TE 19 1934 180155
Torano Nuovo TE 19 1611 181766
Roccafluvione AP 19 2010 183776
Fano Adriano TE 19 296 184072
Castel di Lama AP 19 8634 192706
Tossicia TE 20 1406 194112
Penna Sant'Andrea TE 20 1698 195810

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NW of Teramo (54892 inhabitants)
44 Km NE of L'Aquila (69753 inhabitants)
51 Km W of Montesilvano (53738 inhabitants)
58 Km W of Pescara (121014 inhabitants)
62 Km NW of Chieti (51815 inhabitants)
78 Km E of Foligno (57155 inhabitants)
80 Km E of Terni (111501 inhabitants)
100 Km S of Ancona (100861 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 1.8 2023-04-27
05:31:27		 42.7182 13.5987 15 2024-03-01
17:18:06		 Bollettino Sismico Italiano INGV 116981491
Reviewed
Rev100 		ML 1.7 2023-04-27
05:31:27		 42.7192 13.5995 11 2023-04-27
05:41:07		 Sala Sismica INGV-Roma 116787941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-27 05:31:27 ± 0.1
Latitude 42.7182 ± 0.0036
Longitude 13.5987 ± 0.0073
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116981491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 568
Semi-minor axis of confidence ellipse (meter) 112
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 1.12685
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 116981491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-29 14:08:01

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 116787941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-27 05:41:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2023-04-27T05:31:53.39 0.6 undecidable manual S 296 84.4488 93 0.75 37
IV.CING.HHZ. 2023-04-27T05:31:53.02 0.6 undecidable manual S 336 79.9644 94 1.59 24
IV.EL6.EHZ. 2023-04-27T05:31:52.27 0.6 undecidable manual S 329 78.8655 94 1.12 32
IV.SNTG.HHZ. 2023-04-27T05:31:52.24 0.6 undecidable manual S 318 79.9644 94 0.79 36
IV.PIEI.HHZ. 2023-04-27T05:31:48.27 0.3 undecidable manual P 317 125.0859 92 -0.04 61
IV.CESI.HHZ. 2023-04-27T05:31:47.80 0.6 undecidable manual S 300 64.7907 95 0.4 43
IV.GAVE.EHZ. 2023-04-27T05:31:46.15 0.6 undecidable manual S 267 57.498 95 0.69 39
IV.T0110.HHZ. 2023-04-27T05:31:45.75 0.6 undecidable manual S 165 56.0994 95 0.65 40
IV.CSP1.EHZ. 2023-04-27T05:31:44.24 0.1 undecidable manual S 322 52.4031 96 0.14 93
IV.FDMO.HHZ. 2023-04-27T05:31:44.86 0.1 undecidable manual S 311 54.501 96 0.18 91
IV.SAP2.EHE. 2023-04-27T05:31:43.17 0.3 undecidable manual S 339 45.0216 97 1.02 53
IV.FAGN.HHZ. 2023-04-27T05:31:43.58 0.6 undecidable manual S 181 50.2164 96 0.05 47
IV.GUMA.HNN. 2023-04-27T05:31:42.14 0.3 undecidable manual S 331 43.8228 98 0.31 68
IV.INTR.HHZ. 2023-04-27T05:31:41.20 0.3 undecidable manual P 162 82.251 93 -0.53 60
IV.CING.HHZ. 2023-04-27T05:31:41.29 0.3 undecidable manual P 336 79.9644 94 -0.08 66
IV.SNTG.HHZ. 2023-04-27T05:31:41.05 0.3 undecidable manual P 318 79.9644 94 -0.32 63
IV.ASSB.HHZ. 2023-04-27T05:31:41.95 0.3 undecidable manual P 296 84.4488 93 -0.11 65
IV.NRCA.HHZ. 2023-04-27T05:31:41.30 0.6 undecidable manual S 288 41.4252 98 0.09 48
IV.EL6.EHZ. 2023-04-27T05:31:41.05 0.3 undecidable manual P 329 78.8655 94 -0.15 65
IV.MOMA.HHZ. 2023-04-27T05:31:41.97 0.3 undecidable manual P 277 84.3489 93 -0.07 66
IV.VCEL.EHZ. 2023-04-27T05:31:41.54 0.6 undecidable manual S 151 41.0256 98 0.45 44
IV.RM33.EHZ. 2023-04-27T05:31:41.29 0.6 undecidable manual S 234 39.0276 99 0.72 40
IV.TRTR.HHZ. 2023-04-27T05:31:39.11 0.6 undecidable manual S 69 27.5502 105 1.54 27
IV.MF5.EHZ. 2023-04-27T05:31:39.11 0.6 undecidable manual S 339 31.9458 102 0.39 46
IV.GIGS.HHZ. 2023-04-27T05:31:38.06 0.1 undecidable manual S 184 29.4483 104 -0.01 98
7F.SIB2.EHE. 2023-04-27T05:31:38.15 0.6 undecidable manual S 309 30.747 103 -0.24 47
IV.MMO1.EHZ. 2023-04-27T05:31:38.03 0.1 undecidable manual S 312 29.8479 103 -0.14 96
IV.CESI.HHZ. 2023-04-27T05:31:38.79 0.1 negative manual P 300 64.7907 95 -0.25 88
7F.SIB3.EHN. 2023-04-27T05:31:38.54 0.3 undecidable manual S 303 31.9458 102 -0.16 71
IV.FDMO.HHZ. 2023-04-27T05:31:37.02 0.1 undecidable manual P 311 54.501 96 -0.45 86
IV.T0110.HHZ. 2023-04-27T05:31:37.52 0.1 undecidable manual P 165 56.0994 95 -0.19 91
IV.CAMP.HHZ. 2023-04-27T05:31:37.34 0.1 undecidable manual S 217 25.4523 107 0.3 93
IV.GAVE.EHZ. 2023-04-27T05:31:37.68 0.1 negative manual P 267 57.498 95 -0.24 89
IV.CSP1.EHZ. 2023-04-27T05:31:36.77 0.1 positive manual P 322 52.4031 96 -0.36 88
IV.FAGN.HHZ. 2023-04-27T05:31:36.46 0.3 undecidable manual P 181 50.2164 96 -0.34 67
IV.SMA1.EHZ. 2023-04-27T05:31:36.95 0.1 undecidable manual S 246 23.5542 109 0.39 91
IV.SAP2.EHE. 2023-04-27T05:31:36.13 0.3 undecidable manual P 339 45.0216 97 0.12 71
IV.LNSS.HHZ. 2023-04-27T05:31:36.25 0.1 negative manual P 254 47.3193 97 -0.11 94
IV.VCEL.EHZ. 2023-04-27T05:31:35.30 0.1 positive manual P 151 41.0256 98 -0.09 95
IV.MNTT.EHZ. 2023-04-27T05:31:35.31 0.3 undecidable manual P 360 38.1285 99 0.35 68
IV.NRCA.HHZ. 2023-04-27T05:31:35.17 0.1 negative manual P 288 41.4252 98 -0.29 91
IV.GUMA.HNN. 2023-04-27T05:31:35.29 0.3 undecidable manual P 331 43.8228 98 -0.53 64
IV.RM33.EHZ. 2023-04-27T05:31:34.97 0.1 undecidable manual P 234 39.0276 99 -0.12 95
IV.MTRA.EHZ. 2023-04-27T05:31:34.90 0.1 undecidable manual S 285 16.9719 120 -0.06 100
7F.SIB3.EHN. 2023-04-27T05:31:33.69 0.1 negative manual P 303 31.9458 102 -0.33 92
IV.MF5.EHZ. 2023-04-27T05:31:33.95 0.1 undecidable manual P 339 31.9458 102 -0.08 96
IV.CAMP.HHZ. 2023-04-27T05:31:33.08 0.1 negative manual P 217 25.4523 107 0.03 99
7F.SIB2.EHE. 2023-04-27T05:31:33.44 0.1 undecidable manual P 309 30.747 103 -0.4 90
IV.ASCOL.HNZ. 2023-04-27T05:31:33.70 0.3 undecidable manual S 357 14.7741 125 -0.76 61
IV.GIGS.HHZ. 2023-04-27T05:31:33.44 0.1 positive manual P 184 29.4483 104 -0.21 95
IV.TERO.HNZ. 2023-04-27T05:31:33.92 0.3 undecidable manual S 178 10.5783 137 0.31 71
IV.MMO1.EHZ. 2023-04-27T05:31:33.40 0.1 undecidable manual P 312 29.8479 103 -0.31 92
IV.TRTR.HHZ. 2023-04-27T05:31:33.77 0.1 negative manual P 69 27.5502 105 0.41 91
IV.SMA1.EHZ. 2023-04-27T05:31:32.76 0.1 negative manual P 246 23.5542 109 -0.02 100
IV.TERO.HNZ. 2023-04-27T05:31:31.18 0.1 positive manual P 178 10.5783 137 0.1 100
IV.MTRA.EHZ. 2023-04-27T05:31:31.75 0.1 negative manual P 285 16.9719 120 -0.1 99
IV.ASCOL.HNZ. 2023-04-27T05:31:31.15 0.3 undecidable manual P 357 14.7741 125 -0.41 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHN. ML:1.9 0.0007815 0.74 AML other m 2023-04-27T05:31:33.99
IV.TERO.HHE. ML:2.3 0.001865 1.74 AML other m 2023-04-27T05:31:34.11
IV.MTRA.EHN. ML:2.0 0.0007955000000000001 0.3 AML other m 2023-04-27T05:31:35.18
IV.MTRA.HNN. ML:2.0 0.000819 0.3 AML other m 2023-04-27T05:31:35.18
IV.MTRA.HNE. ML:2.0 0.000744 0.38 AML other m 2023-04-27T05:31:35.66
IV.MTRA.EHE. ML:2.0 0.0007075 0.22 AML other m 2023-04-27T05:31:35.66
IV.CAMP.HHE. ML:1.8 0.000305 0.22 AML other m 2023-04-27T05:31:37.55
IV.GIGS.HHE. ML:1.8 0.00029000000000000006 0.22 AML other m 2023-04-27T05:31:38.28
IV.GIGS.HHN. ML:1.6 0.00016249999999999997 0.38 AML other m 2023-04-27T05:31:38.32
IV.MMO1.EHN. ML:1.8 0.00029549999999999997 0.48 AML other m 2023-04-27T05:31:38.72
IV.MF5.EHN. ML:1.7 0.00019350000000000001 0.22 AML other m 2023-04-27T05:31:39.39
IV.MMO1.EHE. ML:1.8 0.0002535 1 AML other m 2023-04-27T05:31:39.45
IV.MF5.EHE. ML:1.6 0.00015035000000000002 0.38 AML other m 2023-04-27T05:31:39.75
IV.CAMP.HHN. ML:1.3 0.00010065 0.34 AML other m 2023-04-27T05:31:40.45
IV.NRCA.HHN. ML:2.5 0.0009235 0.1 AML other m 2023-04-27T05:31:41.77
IV.NRCA.HNN. ML:2.5 0.0009159999999999999 1.38 AML other m 2023-04-27T05:31:42.77
IV.RM33.EHE. ML:1.4 0.0000949 0.32 AML other m 2023-04-27T05:31:42.61
IV.VCEL.EHE. ML:1.6 0.000131 0.8 AML other m 2023-04-27T05:31:42.49
IV.NRCA.HNE. ML:2.1 0.000376 1.02 AML other m 2023-04-27T05:31:42.55
IV.NRCA.HHE. ML:2.1 0.00043200000000000004 0.12 AML other m 2023-04-27T05:31:42.55
IV.MNTT.EHE. ML:1.8 0.00021799999999999999 0.32 AML other m 2023-04-27T05:31:43.21
IV.MNTT.EHN. ML:1.8 0.0002145 0.38 AML other m 2023-04-27T05:31:43.76
IV.CSP1.EHN. ML:2.3 0.00044500000000000003 0.32 AML other m 2023-04-27T05:31:44.61
IV.CSP1.EHE. ML:2.2 0.000356 0.18 AML other m 2023-04-27T05:31:44.75
IV.FAGN.HHE. ML:1.7 0.0001145 0.52 AML other m 2023-04-27T05:31:44.83
IV.FDMO.HHN. ML:2.3 0.0005385 0.2 AML other m 2023-04-27T05:31:45.13
IV.FDMO.HHE. ML:2.4 0.0005965 0.18 AML other m 2023-04-27T05:31:45.20
IV.VCEL.EHN. ML:1.6 0.0001215 0.82 AML other m 2023-04-27T05:31:45.35
IV.FAGN.HHN. ML:1.7 0.000123 0.54 AML other m 2023-04-27T05:31:46.40
IV.RM33.EHN. ML:1.4 0.0000946 0.92 AML other m 2023-04-27T05:31:46.69
IV.GAVE.EHN. ML:1.8 0.0001208 0.26 AML other m 2023-04-27T05:31:47.33
IV.GAVE.EHE. ML:1.6 0.0000789 0.64 AML other m 2023-04-27T05:31:47.63
IV.LNSS.HHE. ML:1.6 0.0000963 1.14 AML other m 2023-04-27T05:31:47.04
IV.LNSS.HHN. ML:1.7 0.0001305 0.62 AML other m 2023-04-27T05:31:48.19
IV.T0110.HHN. ML:1.8 0.000127 0.32 AML other m 2023-04-27T05:31:48.25
IV.CESI.HHN. ML:2.1 0.00022299999999999997 0.18 AML other m 2023-04-27T05:31:48.36
IV.CESI.HHE. ML:1.8 0.00011649999999999999 0.18 AML other m 2023-04-27T05:31:48.45
IV.T0110.HHE. ML:1.6 0.00008515000000000001 0.34 AML other m 2023-04-27T05:31:48.59
IV.ASSB.HHN. ML:1.4 0.000034450000000000004 0.38 AML other m 2023-04-27T05:31:54.23
IV.SNTG.HHE. ML:1.2 0.00002145 0.66 AML other m 2023-04-27T05:31:54.61
IV.ASSB.HHE. ML:1.4 0.00003685 0.48 AML other m 2023-04-27T05:31:56.38
IV.SNTG.HHN. ML:1.3 0.000024050000000000002 0.26 AML other m 2023-04-27T05:31:56.62
IV.CING.HHE. ML:1.4 0.000034250000000000006 0.5 AML other m 2023-04-27T05:31:57.12
IV.CING.HHN. ML:1.6 0.0000551 0.36 AML other m 2023-04-27T05:31:57.18
IV.INTR.HHE. ML:1.4 0.00003135 1.14 AML other m 2023-04-27T05:32:03.99
IV.INTR.HHN. ML:1.6 0.00005685 0.42 AML other m 2023-04-27T05:32:05.64
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