Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 03-04-2024 and time 11:14:50 (Italy) in region 2 km S Massa Martana (PG)

A magnitude ML 1.4 earthquake occured in region: 2 km S Massa Martana (PG), on

  • 03-04-2024 09:14:50 (UTC)
  • 03-04-2024 11:14:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7580, 12.5170 at 9 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
Massa Martana PG 2 3770 3770
Acquasparta TR 8 4778 8548
Todi PG 9 16851 25399
Giano dell'Umbria PG 10 3846 29245
Montecastrilli TR 12 5022 34267
Avigliano Umbro TR 13 2558 36825
Castel Ritaldi PG 15 3278 40103
Monte Castello di Vibio PG 16 1567 41670
San Gemini TR 16 5018 46688
Collazzone PG 17 3473 50161
Fratta Todina PG 17 1839 52000
Gualdo Cattaneo PG 17 6155 58155
Spoleto PG 18 38218 96373
Montefalco PG 19 5679 102052

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Terni (111501 inhabitants)
27 Km SW of Foligno (57155 inhabitants)
40 Km S of Perugia (166134 inhabitants)
51 Km NE of Viterbo (67173 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
95 Km NE of Civitavecchia (52991 inhabitants)
96 Km N of Roma (2864731 inhabitants)
98 Km W of Teramo (54892 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 1.4 2024-04-03
09:14:50		 42.758 12.5167 9 2024-04-03
09:25:37		 Sala Sismica INGV-Roma 126436761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-03 09:14:50 ± 0.07
Latitude 42.7580 ± 0.0027
Longitude 12.5167 ± 0.0061
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126436761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 317
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.44426
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 126436761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-03 09:25:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2024-04-03T09:15:07.14 0.3 undecidable manual S 80 49.3173 50 0.11 69
IV.ASSB.HHZ. 2024-04-03T09:15:02.74 0.3 undecidable manual S 20 33.6441 50 -0.09 72
IV.NRCA.HHZ. 2024-04-03T09:15:00.14 0.3 undecidable manual P 80 49.3173 50 -0.06 70
IV.MGAB.HHZ. 2024-04-03T09:14:58.33 0.3 undecidable manual P 298 37.1295 50 0.01 72
IV.ASSB.HHZ. 2024-04-03T09:14:57.72 0.3 undecidable manual P 20 33.6441 50 -0.06 72
IV.CESX.HHZ. 2024-04-03T09:14:57.53 0.3 undecidable manual S 161 17.5713 117 -0.16 73
IV.MOMA.HHZ. 2024-04-03T09:14:54.62 0.1 undecidable manual S 40 6.6933 143 -0.1 100
IV.CESX.HHZ. 2024-04-03T09:14:54.95 0.3 undecidable manual P 161 17.5713 117 0.13 73
IV.MOMA.HHZ. 2024-04-03T09:14:53.28 0.1 negative manual P 40 6.6933 143 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNN. ML:1.7 0.000833 0.4 AML other m 2024-04-03T09:14:54.86
IV.MOMA.HHN. ML:1.8 0.001028 1.28 AML other m 2024-04-03T09:14:55.15
IV.MOMA.HHE. ML:1.9 0.00139 0.2 AML other m 2024-04-03T09:14:55.15
IV.MOMA.HNE. ML:1.9 0.0014299999999999998 0.2 AML other m 2024-04-03T09:14:55.15
IV.CESX.HHE. ML:1.2 0.0001275 0.64 AML other m 2024-04-03T09:14:58.55
IV.CESX.HHN. ML:1.2 0.000132 0.24 AML other m 2024-04-03T09:14:58.98
IV.ASSB.HHN. ML:1.0 0.0000438 1.34 AML other m 2024-04-03T09:15:03.27
IV.MGAB.HHN. ML:1.4 0.00008669999999999999 0.18 AML other m 2024-04-03T09:15:04.48
IV.MGAB.HHE. ML:1.4 0.00009285000000000001 0.3 AML other m 2024-04-03T09:15:04.94
IV.ASSB.HHE. ML:1.1 0.0000485 1.02 AML other m 2024-04-03T09:15:05.21
IV.NRCA.HHN. ML:1.2 0.00004685 0.14 AML other m 2024-04-03T09:15:07.55
IV.NRCA.HHE. ML:1.2 0.0000468 0.12 AML other m 2024-04-03T09:15:09.59
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