Earthquake with magnitude of ML 0.7 on date 25-05-2023 and time 22:30:31 (UTC) in region 6 km E Ussita (MC)

A magnitude ML 0.7 earthquake occured in region: 6 km E Ussita (MC), on

  • 25-05-2023 22:30:31 (UTC)
  • 26-05-2023 00:30:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9410, 13.2110 at 7 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ussita MC 6 444 444
Bolognola MC 6 142 586
Castelsantangelo sul Nera MC 7 281 867
Visso MC 10 1107 1974
Acquacanina MC 10 121 2095
Montemonaco AP 11 604 2699
Montefortino FM 11 1178 3877
Fiastra MC 12 559 4436
Amandola FM 13 3629 8065
Sarnano MC 13 3264 11329
Fiordimonte MC 15 202 11531
Montegallo AP 15 523 12054
Preci PG 16 724 12778
Comunanza AP 17 3166 15944
Pievebovigliana MC 17 866 16810
Pieve Torina MC 17 1458 18268
Gualdo MC 18 815 19083
Monte Cavallo MC 18 145 19228
Norcia PG 19 4957 24185
Cessapalombo MC 19 512 24697
Arquata del Tronto AP 20 1178 25875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
51 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
67 Km N of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
98 Km NW of Pescara (121014 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 0.7 2023-05-25
22:30:31
42.9407 13.2107 7 2023-05-25
22:35:05
Sala Sismica INGV-Roma 117729081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-25 22:30:31 ± 0.19
Latitude 42.9407 ± 0.0027
Longitude 13.2107 ± 0.0049
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117729081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 117
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
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) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.09443
Epicentral distance of station farthest from the epicenter (degree) 0.15199
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:0.7

Field Value
Value 0.7
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 117729081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-25 22:35:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-05-25T22:30:37.85 0.6 undecidable manual S 358 16.7721 111 0.03 50
IV.FDMO.HHZ. 2023-05-25T22:30:37.15 0.6 undecidable manual S 317 14.5743 114 0.02 50
IV.NRCA.HHZ. 2023-05-25T22:30:37.16 0.6 undecidable manual S 213 14.2746 115 0.15 49
IV.MMO1.EHZ. 2023-05-25T22:30:35.78 0.6 undecidable manual S 116 10.4784 122 -0.09 50
IV.CSP1.EHZ. 2023-05-25T22:30:35.08 0.1 undecidable manual P 358 16.7721 111 -0.1 98
IV.GUMA.HHZ. 2023-05-25T22:30:35.56 0.6 undecidable manual P 37 16.872 111 0.36 47
IV.MMO1.EHZ. 2023-05-25T22:30:34.01 0.6 negative manual P 116 10.4784 122 -0.04 50
IV.FDMO.HHZ. 2023-05-25T22:30:34.73 0.1 undecidable manual P 317 14.5743 114 -0.05 100
IV.NRCA.HHZ. 2023-05-25T22:30:34.67 0.1 undecidable manual P 213 14.2746 115 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.7 0.0000569 1.04 AML other m 2023-05-25T22:30:39.27
IV.NRCA.HHN. ML:0.7 0.00005574999999999999 0.9 AML other m 2023-05-25T22:30:39.21
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