Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 09-04-2024 and time 20:19:40 (UTC) in region 4 km W Accumoli (RI)

A magnitude ML 1.5 earthquake occured in region: 4 km W Accumoli (RI), on

  • 09-04-2024 20:19:40 (UTC)
  • 09-04-2024 22:19:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6940, 13.2030 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 4 667 667
Cittareale RI 9 482 1149
Amatrice RI 10 2657 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 14 4957 9941
Cascia PG 16 3217 13158
Acquasanta Terme AP 19 2916 16074
Montereale AQ 19 2581 18655
Montegallo AP 20 523 19178

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
41 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Terni (111501 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km W of Pescara (121014 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
88 Km W of Chieti (51815 inhabitants)
95 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
Reviewed
Rev100 		ML 1.5 2024-04-09
20:19:40		 42.6938 13.2028 10 2024-04-09
20:30:23		 Sala Sismica INGV-Roma 126604541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-09 20:19:40 ± 0.05
Latitude 42.6938 ± 0.0027
Longitude 13.2028 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126604541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 172
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) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.80309
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 126604541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-09 20:30:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.EHZ. 2024-04-09T20:19:57.06 0.6 undecidable manual S 338 50.2164 50 0.42 43
IV.MOMA.HHZ. 2024-04-09T20:19:57.80 0.6 undecidable manual S 284 53.0025 50 0.42 43
IV.SSFR.HHZ. 2024-04-09T20:19:56.05 0.6 undecidable manual P 338 89.1441 50 0.22 42
IV.OFFI.HHZ. 2024-04-09T20:19:56.78 0.6 undecidable manual S 56 47.5191 50 0.86 37
IV.FIAM.HHZ. 2024-04-09T20:19:55.92 0.6 undecidable manual S 188 47.7189 50 -0.06 47
IV.CSP1.EHZ. 2024-04-09T20:19:55.16 0.6 undecidable manual S 0 44.1225 50 0.13 47
IV.GUMA.HHZ. 2024-04-09T20:19:55.27 0.6 undecidable manual S 15 42.3243 50 0.74 39
IV.CESI.HHZ. 2024-04-09T20:19:54.38 0.6 undecidable manual S 325 42.2244 50 -0.12 47
IV.GIGS.HHZ. 2024-04-09T20:19:53.41 0.6 undecidable manual S 131 40.3263 50 -0.6 42
IV.ARRO.EHZ. 2024-04-09T20:19:53.30 0.6 undecidable manual S 251 37.8288 50 -0.05 48
IV.VCEL.EHZ. 2024-04-09T20:19:52.11 0.1 undecidable manual P 122 61.7937 50 0.5 84
IV.T0110.HHZ. 2024-04-09T20:19:52.75 0.1 undecidable manual P 137 69.6747 50 -0.08 90
IV.TERO.HHZ. 2024-04-09T20:19:51.56 0.6 undecidable manual S 103 33.6441 50 -0.66 41
IV.ASSB.HHZ. 2024-04-09T20:19:51.01 0.1 undecidable manual P 311 58.7967 50 -0.14 91
IV.OFFI.HHZ. 2024-04-09T20:19:50.12 0.3 undecidable manual P 56 47.5191 50 0.7 60
IV.MOMA.HHZ. 2024-04-09T20:19:50.28 0.1 undecidable manual P 284 53.0025 50 0.03 94
ZO.PDN12.EHZ. 2024-04-09T20:19:50.29 0.6 undecidable manual S 301 27.2505 50 -0.21 47
IV.MMO1.EHZ. 2024-04-09T20:19:49.46 0.6 undecidable manual S 24 24.9528 112 -0.37 46
IV.FIAM.HHZ. 2024-04-09T20:19:49.32 0.3 positive manual P 188 47.7189 50 -0.13 70
IV.MC2.EHZ. 2024-04-09T20:19:49.73 0.6 undecidable manual S 357 24.1536 112 0.14 48
IV.CAMP.HHZ. 2024-04-09T20:19:49.37 0.6 undecidable manual S 136 24.2535 112 -0.26 47
IV.GAVE.EHZ. 2024-04-09T20:19:49.77 0.6 undecidable manual S 270 25.1526 111 -0.14 48
IV.MML1.EHZ. 2024-04-09T20:19:49.72 0.3 undecidable manual P 338 50.2164 50 -0.11 70
7F.SIB1.EHZ. 2024-04-09T20:19:49.59 0.6 undecidable manual S 14 22.9548 113 0.4 46
IV.CSP1.EHZ. 2024-04-09T20:19:48.71 0.1 undecidable manual P 0 44.1225 50 -0.19 92
IV.RM33.EHZ. 2024-04-09T20:19:48.52 0.6 undecidable manual S 177 20.5683 116 0.09 49
IV.GUMA.HHZ. 2024-04-09T20:19:48.81 0.6 positive manual P 15 42.3243 50 0.2 46
7F.SIB3.EHZ. 2024-04-09T20:19:48.17 0.6 undecidable manual S 15 20.868 115 -0.36 46
7F.SIB2.EHZ. 2024-04-09T20:19:48.85 0.6 undecidable manual S 21 23.3544 113 -0.48 45
IV.CESI.HHZ. 2024-04-09T20:19:48.43 0.1 undecidable manual P 325 42.2244 50 -0.16 93
IV.LNSS.HHZ. 2024-04-09T20:19:47.48 0.6 undecidable manual S 233 16.6722 121 0.22 48
IV.NRCA.HHZ. 2024-04-09T20:19:47.19 0.6 undecidable manual S 335 17.0718 120 -0.19 48
IV.MTRA.EHZ. 2024-04-09T20:19:47.13 0.6 undecidable manual S 66 17.2716 120 -0.29 47
IV.GIGS.HHZ. 2024-04-09T20:19:47.95 1.0 positive manual P 131 40.3263 50 -0.35 22
IV.ARRO.EHZ. 2024-04-09T20:19:47.78 0.3 undecidable manual P 251 37.8288 50 -0.15 71
IV.FDMO.HHZ. 2024-04-09T20:19:47.86 0.1 undecidable manual P 346 39.1275 50 -0.27 92
IV.SMA1.EHZ. 2024-04-09T20:19:46.44 0.6 undecidable manual S 123 12.876 128 0.27 48
7F.SIB1.EHZ. 2024-04-09T20:19:46.43 0.1 undecidable manual P 14 22.9548 113 0.9 76
ZO.PDN12.EHZ. 2024-04-09T20:19:46.09 0.1 undecidable manual P 301 27.2505 50 -0.19 95
IV.TERO.HHZ. 2024-04-09T20:19:46.88 0.6 negative manual P 103 33.6441 50 -0.39 45
IV.MC2.EHZ. 2024-04-09T20:19:45.76 0.1 undecidable manual P 357 24.1536 112 0 99
7F.SIB2.EHZ. 2024-04-09T20:19:45.34 0.1 undecidable manual P 21 23.3544 113 -0.27 94
IV.CAMP.HHZ. 2024-04-09T20:19:45.70 0.1 undecidable manual P 136 24.2535 112 -0.08 98
IV.GAVE.EHZ. 2024-04-09T20:19:45.87 0.1 undecidable manual P 270 25.1526 111 -0.08 98
ZO.PDN11.EHZ. 2024-04-09T20:19:45.85 0.6 undecidable manual S 326 12.0768 129 -0.09 50
IV.RM33.EHZ. 2024-04-09T20:19:45.22 0.1 negative manual P 177 20.5683 116 0.13 98
IV.MMO1.EHZ. 2024-04-09T20:19:45.64 0.1 undecidable manual P 24 24.9528 112 -0.26 94
IV.SMA1.EHZ. 2024-04-09T20:19:44.08 0.1 negative manual P 123 12.876 128 0.3 95
IV.LNSS.HHZ. 2024-04-09T20:19:44.68 0.3 negative manual P 233 16.6722 121 0.27 71
IV.NRCA.HHZ. 2024-04-09T20:19:44.52 0.1 negative manual P 335 17.0718 120 0.04 100
7F.SIB3.EHZ. 2024-04-09T20:19:44.95 0.1 undecidable manual P 15 20.868 115 -0.19 96
IV.MTRA.EHZ. 2024-04-09T20:19:44.48 0.1 undecidable manual P 66 17.2716 120 -0.03 100
ZO.PDN11.EHZ. 2024-04-09T20:19:43.79 0.1 undecidable manual P 326 12.0768 129 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.7 0.0006305000000000001 1.6 AML other m 2024-04-09T20:19:47.12
IV.SMA1.EHE. ML:1.8 0.0006730000000000001 0.14 AML other m 2024-04-09T20:19:47.31
IV.MTRA.EHN. ML:1.6 0.00032450000000000003 0.16 AML other m 2024-04-09T20:19:47.28
IV.LNSS.HHE. ML:1.8 0.0005880000000000001 0.22 AML other m 2024-04-09T20:19:47.79
IV.LNSS.HHN. ML:1.8 0.0005340000000000001 0.26 AML other m 2024-04-09T20:19:47.82
IV.MTRA.EHE. ML:1.6 0.0003725 1.38 AML other m 2024-04-09T20:19:47.16
IV.RM33.EHN. ML:1.6 0.000309 0.12 AML other m 2024-04-09T20:19:48.78
IV.RM33.EHE. ML:1.6 0.00026749999999999994 1.88 AML other m 2024-04-09T20:19:48.00
IV.MMO1.EHN. ML:1.4 0.00013450000000000002 1.36 AML other m 2024-04-09T20:19:49.83
IV.GAVE.EHN. ML:1.9 0.000494 0.12 AML other m 2024-04-09T20:19:50.10
IV.GAVE.EHE. ML:1.9 0.0004575 0.2 AML other m 2024-04-09T20:19:50.18
IV.MMO1.EHE. ML:1.2 0.0001042 0.5 AML other m 2024-04-09T20:19:52.10
IV.TERO.HHN. ML:1.5 0.000133 1.46 AML other m 2024-04-09T20:19:52.87
IV.TERO.HHE. ML:1.5 0.00014450000000000002 0.9 AML other m 2024-04-09T20:19:53.52
IV.ARRO.EHE. ML:1.2 0.0000668 0.48 AML other m 2024-04-09T20:19:54.43
IV.ARRO.EHN. ML:1.4 0.00009204999999999999 1.82 AML other m 2024-04-09T20:19:54.00
IV.CESI.HHN. ML:1.4 0.0000779 0.26 AML other m 2024-04-09T20:19:55.18
IV.GUMA.HHN. ML:1.6 0.0001375 1.3 AML other m 2024-04-09T20:19:55.14
IV.CESI.HHE. ML:1.2 0.00005545 0.94 AML other m 2024-04-09T20:19:56.81
IV.GUMA.HHE. ML:1.6 0.00013350000000000002 0.32 AML other m 2024-04-09T20:19:57.64
IV.MOMA.HHN. ML:1.4 0.00006505 0.2 AML other m 2024-04-09T20:19:59.54
IV.MOMA.HHE. ML:1.4 0.000057749999999999994 0.96 AML other m 2024-04-09T20:19:59.25
IV.ASSB.HHE. ML:1.3 0.00004725 0.94 AML other m 2024-04-09T20:20:00.61
IV.ASSB.HHN. ML:1.3 0.000044949999999999995 0.4 AML other m 2024-04-09T20:20:01.29
IV.VCEL.EHE. ML:1.7 0.00008995 0.62 AML other m 2024-04-09T20:20:02.90
IV.VCEL.EHN. ML:1.6 0.00008669999999999999 0.42 AML other m 2024-04-09T20:20:03.62
IV.SSFR.HHN. ML:1.4 0.00002915 0.64 AML other m 2024-04-09T20:20:09.49
IV.SSFR.HHE. ML:1.4 0.000030350000000000002 0.2 AML other m 2024-04-09T20:20:11.52
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