Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 25-03-2023 and time 04:58:26 (UTC) in region 4 km W Roccafluvione (AP)

A magnitude ML 1.6 earthquake occured in region: 4 km W Roccafluvione (AP), on

  • 25-03-2023 04:58:26 (UTC)
  • 25-03-2023 05:58:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8550, 13.4290 at 11 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
Roccafluvione AP 4 2010 2010
Palmiano AP 6 196 2206
Venarotta AP 6 2066 4272
Montegallo AP 8 523 4795
Acquasanta Terme AP 10 2916 7711
Montemonaco AP 10 604 8315
Comunanza AP 12 3166 11481
Ascoli Piceno AP 12 49407 60888
Montefortino FM 12 1178 62066
Force AP 13 1354 63420
Arquata del Tronto AP 14 1178 64598
Valle Castellana TE 14 977 65575
Montefalcone Appennino FM 15 424 65999
Amandola FM 15 3629 69628
Rotella AP 16 906 70534
Smerillo FM 17 365 70899
Folignano AP 17 9241 80140
Castignano AP 18 2796 82936
Montedinove AP 18 488 83424
Santa Vittoria in Matenano FM 19 1330 84754
Monte San Martino MC 20 765 85519

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Teramo (54892 inhabitants)
56 Km N of L'Aquila (69753 inhabitants)
60 Km E of Foligno (57155 inhabitants)
70 Km NW of Montesilvano (53738 inhabitants)
72 Km E of Terni (111501 inhabitants)
78 Km NW of Pescara (121014 inhabitants)
82 Km NW of Chieti (51815 inhabitants)
85 Km S of Ancona (100861 inhabitants)
89 Km E of Perugia (166134 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 1.6 2023-03-25
04:58:26		 42.855 13.4288 11 2024-03-01
17:18:00		 Bollettino Sismico Italiano INGV 115726231
Reviewed
Rev100 		ML 1.7 2023-03-25
04:58:26		 42.8522 13.4043 13 2023-03-25
05:05:28		 Sala Sismica INGV-Roma 115711601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-25 04:58:26 ± 0.04
Latitude 42.8550 ± 0.0018
Longitude 13.4288 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 115726231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 220
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.94159
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 115711601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-25 05:05:28

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 115726231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-03-25 17:22:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-03-25T04:58:56.58 0.6 undecidable manual S 317 104.5176 50 0.04 42
IV.FRON.EHZ. 2023-03-25T04:58:53.37 0.6 undecidable manual S 323 92.9403 50 -0.09 43
IV.SSFR.HHN. 2023-03-25T04:58:51.03 0.6 undecidable manual S 321 83.0502 50 0.22 42
IV.FOSV.HNE. 2023-03-25T04:58:48.65 0.3 undecidable manual S 312 72.8715 50 0.56 59
IV.ASSB.HHZ. 2023-03-25T04:58:46.39 0.3 undecidable manual S 289 65.8896 50 0.16 66
IV.CING.HHZ. 2023-03-25T04:58:45.39 0.3 undecidable manual S 342 60.7947 50 0.53 62
IV.PIEI.HHZ. 2023-03-25T04:58:43.45 0.1 undecidable manual P 317 104.5176 50 -0.26 80
IV.GAVE.EHN. 2023-03-25T04:58:41.67 0.3 undecidable manual S 248 47.1195 50 0.45 64
IV.FRON.EHZ. 2023-03-25T04:58:41.90 0.1 undecidable manual P 323 92.9403 50 -0.03 86
IV.MML1.EHZ. 2023-03-25T04:58:41.20 0.3 undecidable manual S 308 46.9197 50 0.04 70
IV.GIGS.HHZ. 2023-03-25T04:58:40.83 0.3 undecidable manual S 165 46.1205 50 -0.12 69
IV.SSFR.HHN. 2023-03-25T04:58:40.84 0.1 undecidable manual P 321 83.0502 50 0.44 81
IV.LNSS.HNZ. 2023-03-25T04:58:40.40 0.3 undecidable manual S 229 42.2244 50 0.48 64
IV.RM33.EHZ. 2023-03-25T04:58:40.06 0.3 undecidable manual S 205 42.2244 50 0.16 69
IV.CESI.HHZ. 2023-03-25T04:58:40.97 0.6 undecidable manual S 292 45.7209 50 0.13 46
IV.CAMP.HHE. 2023-03-25T04:58:38.42 0.3 undecidable manual S 183 35.4423 50 0.31 68
IT.MTCL.HGZ. 2023-03-25T04:58:38.73 0.3 undecidable manual S 294 38.1285 50 -0.09 71
IV.FOSV.HNE. 2023-03-25T04:58:38.59 0.1 undecidable manual P 312 72.8715 50 -0.24 86
IV.FDMO.HHZ. 2023-03-25T04:58:37.47 0.3 undecidable manual S 306 34.2435 50 -0.32 68
IV.CSP1.EHZ. 2023-03-25T04:58:37.02 0.3 undecidable manual S 325 31.9458 50 -0.15 71
IV.ASSB.HHZ. 2023-03-25T04:58:37.31 0.1 undecidable manual P 289 65.8896 50 -0.45 84
IV.SAP2.EHE. 2023-03-25T04:58:36.18 0.3 undecidable manual S 355 26.9508 50 0.35 69
IV.TERO.HHZ. 2023-03-25T04:58:36.76 0.3 undecidable manual S 151 29.4483 50 0.25 70
IV.CING.HHZ. 2023-03-25T04:58:36.60 0.1 undecidable manual P 342 60.7947 50 -0.37 85
IV.SMA1.EHZ. 2023-03-25T04:58:35.62 0.3 undecidable manual S 197 26.0517 50 0.02 73
IV.GUMA.HHZ. 2023-03-25T04:58:35.15 0.3 undecidable manual S 342 24.2535 50 0.03 73
IV.NRCA.HHZ. 2023-03-25T04:58:35.25 0.3 undecidable manual S 265 25.6521 50 -0.25 71
IV.MNTT.EHZ. 2023-03-25T04:58:35.98 0.3 undecidable manual S 30 26.6511 50 0.22 71
IV.MML1.EHZ. 2023-03-25T04:58:34.56 0.1 positive manual P 308 46.9197 50 -0.27 90
IV.GIGS.HHZ. 2023-03-25T04:58:34.63 0.1 undecidable manual P 165 46.1205 50 -0.08 93
IV.LNSS.HNZ. 2023-03-25T04:58:34.04 0.1 negative manual P 229 42.2244 50 -0.08 94
IV.RM33.EHZ. 2023-03-25T04:58:34.09 0.1 negative manual P 205 42.2244 50 -0.01 95
IV.GAVE.EHN. 2023-03-25T04:58:34.62 0.3 undecidable manual P 248 47.1195 50 -0.25 68
IV.CESI.HHZ. 2023-03-25T04:58:34.48 0.1 positive manual P 292 45.7209 50 -0.17 92
IT.MTCL.HGZ. 2023-03-25T04:58:33.20 0.1 undecidable manual P 294 38.1285 50 -0.28 91
IV.MNTT.EHZ. 2023-03-25T04:58:32.10 0.1 undecidable manual P 30 26.6511 50 0.39 91
IV.MF5.EHZ. 2023-03-25T04:58:32.84 0.3 undecidable manual S 10 14.9739 50 0.21 72
IV.CAMP.HHE. 2023-03-25T04:58:32.77 0.1 undecidable manual P 183 35.4423 50 -0.3 91
IV.FDMO.HHZ. 2023-03-25T04:58:32.54 0.1 positive manual P 306 34.2435 50 -0.35 90
IV.TERO.HHZ. 2023-03-25T04:58:32.15 0.1 undecidable manual P 151 29.4483 50 0.01 97
7F.SIB3.EHN. 2023-03-25T04:58:32.06 0.3 undecidable manual S 280 13.0758 130 -0.08 75
7F.SIB1.EHE. 2023-03-25T04:58:32.54 0.3 undecidable manual S 289 13.6752 129 0.26 71
IV.CSP1.EHZ. 2023-03-25T04:58:32.25 0.1 positive manual P 325 31.9458 50 -0.28 92
IV.ASCOL.EHN. 2023-03-25T04:58:31.83 0.3 undecidable manual S 92 13.0758 130 -0.31 70
IV.MTRA.EHZ. 2023-03-25T04:58:31.87 0.3 undecidable manual S 194 11.1777 135 0.21 72
IV.NRCA.HHZ. 2023-03-25T04:58:31.45 0.1 positive manual P 265 25.6521 50 -0.12 97
IV.SAP2.EHE. 2023-03-25T04:58:31.61 0.1 undecidable manual P 355 26.9508 50 -0.14 95
IV.SMA1.EHZ. 2023-03-25T04:58:31.56 0.1 negative manual P 197 26.0517 50 -0.06 97
7F.SIB2.EHE. 2023-03-25T04:58:31.58 0.3 undecidable manual S 292 10.878 135 0 75
IV.MMO1.EHZ. 2023-03-25T04:58:31.35 0.3 undecidable manual S 301 9.6792 139 0.07 74
IV.GUMA.HHZ. 2023-03-25T04:58:31.31 0.1 positive manual P 342 24.2535 50 -0.03 98
IV.MF5.EHZ. 2023-03-25T04:58:30.06 0.1 negative manual P 10 14.9739 50 0.15 97
7F.SIB3.EHN. 2023-03-25T04:58:29.64 0.1 negative manual P 280 13.0758 130 0.02 100
7F.SIB1.EHE. 2023-03-25T04:58:29.85 0.1 negative manual P 289 13.6752 129 0.14 97
IV.MMO1.EHZ. 2023-03-25T04:58:29.23 0.1 negative manual P 301 9.6792 139 0.1 99
IV.ASCOL.EHN. 2023-03-25T04:58:29.43 0.1 positive manual P 92 13.0758 130 -0.19 96
IV.MTRA.EHZ. 2023-03-25T04:58:29.54 0.1 negative manual P 194 11.1777 135 0.19 97
7F.SIB2.EHE. 2023-03-25T04:58:29.33 0.1 negative manual P 292 10.878 135 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHE. ML:1.7 0.0005915 0.58 AML other m 2023-03-25T04:58:31.58
IV.MMO1.EHN. ML:1.7 0.000611 0.46 AML other m 2023-03-25T04:58:31.57
IV.MTRA.HNE. ML:1.8 0.0008225 0.38 AML other m 2023-03-25T04:58:32.56
IV.MTRA.EHE. ML:1.8 0.0007725 0.48 AML other m 2023-03-25T04:58:32.38
IV.MTRA.EHN. ML:1.7 0.0006065 0.34 AML other m 2023-03-25T04:58:32.57
IV.MTRA.HNN. ML:1.7 0.000585 0.34 AML other m 2023-03-25T04:58:32.57
IV.MF5.EHE. ML:1.3 0.00020199999999999998 0.56 AML other m 2023-03-25T04:58:33.40
IV.MF5.EHN. ML:1.4 0.00022250000000000001 0.84 AML other m 2023-03-25T04:58:33.06
IV.GUMA.HHE. ML:1.7 0.0002925 0.34 AML other m 2023-03-25T04:58:35.72
IV.NRCA.HHE. ML:1.8 0.00035450000000000005 0.14 AML other m 2023-03-25T04:58:35.65
IV.SMA1.EHN. ML:1.6 0.00020750000000000003 1.8 AML other m 2023-03-25T04:58:35.95
IV.SMA1.EHE. ML:1.3 0.00010745000000000001 0.58 AML other m 2023-03-25T04:58:36.03
IV.GUMA.HHN. ML:1.6 0.00023649999999999998 0.4 AML other m 2023-03-25T04:58:36.64
IV.NRCA.HHN. ML:1.7 0.0002935 0.64 AML other m 2023-03-25T04:58:37.35
IV.TERO.HHN. ML:1.6 0.00019250000000000002 0.2 AML other m 2023-03-25T04:58:37.44
IV.FDMO.HHE. ML:1.6 0.00016 0.18 AML other m 2023-03-25T04:58:37.87
IV.TERO.HHE. ML:1.6 0.00017749999999999998 0.8 AML other m 2023-03-25T04:58:37.59
IV.FDMO.HHN. ML:1.5 0.0001265 0.22 AML other m 2023-03-25T04:58:39.70
IV.MNTT.EHN. ML:1.7 0.000266 0.82 AML other m 2023-03-25T04:58:39.30
IV.RM33.EHN. ML:1.4 0.00008345 0.3 AML other m 2023-03-25T04:58:40.77
IV.MNTT.EHE. ML:1.6 0.00021550000000000003 0.32 AML other m 2023-03-25T04:58:40.70
IV.CESI.HHN. ML:1.5 0.00010005 0.52 AML other m 2023-03-25T04:58:41.54
IV.RM33.EHE. ML:1.4 0.00007999999999999999 0.26 AML other m 2023-03-25T04:58:41.65
IV.MML1.EHN. ML:1.5 0.0000838 0.54 AML other m 2023-03-25T04:58:41.70
IV.CESI.HHE. ML:1.6 0.00010575 0.78 AML other m 2023-03-25T04:58:41.81
IV.MML1.EHE. ML:1.4 0.00006500000000000001 0.54 AML other m 2023-03-25T04:58:42.08
IV.CING.HHE. ML:1.4 0.0000506 0.48 AML other m 2023-03-25T04:58:46.69
IV.CING.HHN. ML:1.3 0.00003785 0.8 AML other m 2023-03-25T04:58:47.39
IV.ASSB.HHN. ML:1.4 0.00004585 0.58 AML other m 2023-03-25T04:58:47.34
IV.ASSB.HHE. ML:1.4 0.00004645 0.32 AML other m 2023-03-25T04:58:48.18
IV.PIEI.HHE. ML:1.4 0.000025399999999999997 0.2 AML other m 2023-03-25T04:59:00.83
IV.PIEI.HHN. ML:1.3 0.000018665000000000002 0.82 AML other m 2023-03-25T04:59:01.17
IV.GUMA.HNN. ML:1.6 0.00023502194999999997 0.2304 AML other m 2023-03-25T04:58:35.55
IV.GUMA.HNE. ML:1.7 0.00028230964999999996 0.32 AML other m 2023-03-25T04:58:35.72
IV.NRCA.HNN. ML:1.7 0.00028537770000000004 0.1088 AML other m 2023-03-25T04:58:36.29
IV.NRCA.HNE. ML:1.8 0.00036260834999999995 0.1376 AML other m 2023-03-25T04:58:35.65
IV.TERO.HNN. ML:1.6 0.00021622396000000002 0.24 AML other m 2023-03-25T04:58:37.64
IV.TERO.HNE. ML:1.7 0.000257819665 0.1728 AML other m 2023-03-25T04:58:37.60
IV.CESI.HNN. ML:1.5 0.00009272301 0.64 AML other m 2023-03-25T04:58:33.88
IV.CESI.HNE. ML:1.7 0.00013321595 0.2016 AML other m 2023-03-25T04:58:41.33
IV.MML1.HNE. ML:1.6 0.000099362175 0.7584 AML other m 2023-03-25T04:58:38.81
IV.MML1.HNN. ML:1.6 0.00012407595 0.8416 AML other m 2023-03-25T04:58:55.35
IV.GIGS.HHE. ML:0.5 0.000011389035000000001 0.4992 AML other m 2023-03-25T04:58:46.80
IV.GIGS.HHN. ML:0.5 0.0000111470955 0.2816 AML other m 2023-03-25T04:58:42.32
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