Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 25-05-2024 and time 18:41:26 (UTC) in region 2 km SW Monterosso Almo (RG)

A magnitude ML 1.8 earthquake occured in region: 2 km SW Monterosso Almo (RG), on

  • 25-05-2024 18:41:26 (UTC)
  • 25-05-2024 20:41:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.0790, 14.7440 at 16 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
Monterosso Almo RG 2 3032 3032
Giarratana RG 6 3048 6080
Chiaramonte Gulfi RG 6 8238 14318
Vizzini CT 9 6241 20559
Licodia Eubea CT 9 3081 23640
Buccheri SR 11 1999 25639
Buscemi SR 13 1051 26690
Palazzolo Acreide SR 14 8808 35498
Mazzarrone CT 16 4078 39576
Ragusa RG 17 73313 112889
Grammichele CT 18 13418 126307
Ferla SR 18 2523 128830
Cassaro SR 18 821 129651
Comiso RG 19 30156 159807

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Ragusa (73313 inhabitants)
23 Km NE of Vittoria (63339 inhabitants)
24 Km N of Modica (54633 inhabitants)
44 Km E of Gela (75827 inhabitants)
49 Km W of Siracusa (122291 inhabitants)
56 Km SW of Catania (314555 inhabitants)
70 Km SW of Acireale (52622 inhabitants)
76 Km SE of Caltanissetta (63360 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 1.8 2024-05-25
18:41:26		 37.0788 14.744 16 2024-05-25
18:45:26		 Sala Sismica INGV-Roma 128167741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-05-25 18:41:26 ± 0.22
Latitude 37.0788 ± 0.0063
Longitude 14.7440 ± 0.0090
Depth (km) 16 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 128167741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 757
Semi-minor axis of confidence ellipse (meter) 267
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 50
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 0.33635
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 128167741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-05-25 18:45:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2024-05-25T18:41:38.94 0.3 undecidable manual S 111 36.0417 103 0.23 70
IV.HLNI.HHZ. 2024-05-25T18:41:37.27 0.3 undecidable manual S 21 31.9458 105 -0.39 68
IV.SSY.HHZ. 2024-05-25T18:41:37.74 0.3 undecidable manual S 73 30.4473 106 0.47 67
IV.HVIT.HHZ. 2024-05-25T18:41:35.03 0.6 undecidable manual S 244 21.867 115 -0.09 49
IV.RAFF.HHZ. 2024-05-25T18:41:34.32 0.1 undecidable manual P 295 37.3293 102 0.58 84
IV.HMDC.HHZ. 2024-05-25T18:41:33.14 0.3 undecidable manual S 165 13.7751 131 -0.15 74
IV.HAVL.HHZ. 2024-05-25T18:41:33.30 1.0 positive manual P 111 36.0417 103 -0.24 23
IV.HVZN.HHZ. 2024-05-25T18:41:32.87 0.3 undecidable manual S 347 11.2776 138 0.03 75
IV.SSY.HHZ. 2024-05-25T18:41:32.63 1.0 negative manual P 73 30.4473 106 -0.08 24
IV.HLNI.HHZ. 2024-05-25T18:41:32.68 0.3 positive manual P 21 31.9458 105 -0.26 69
IV.HVIT.HHZ. 2024-05-25T18:41:31.26 0.1 positive manual P 244 21.867 115 -0.22 95
IV.HVZN.HHZ. 2024-05-25T18:41:30.06 0.1 negative manual P 347 11.2776 138 -0.09 100
IV.HMDC.HHZ. 2024-05-25T18:41:30.27 0.6 undecidable manual P 165 13.7751 131 -0.14 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HMDC.HHE. ML:2.1 0.0010539999999999998 0.08 AML other m 2024-05-25T18:41:33.61
IV.HMDC.HNE. ML:1.9 0.00069 0.08 AML other m 2024-05-25T18:41:33.61
IV.HMDC.HNN. ML:2.0 0.0008045 0.42 AML other m 2024-05-25T18:41:33.68
IV.HMDC.HHN. ML:2.2 0.0011 0.42 AML other m 2024-05-25T18:41:33.68
IV.HVZN.HHN. ML:1.8 0.0005665000000000001 0.3 AML other m 2024-05-25T18:41:35.00
IV.HVZN.HNN. ML:1.8 0.0006175000000000001 0.36 AML other m 2024-05-25T18:41:35.02
IV.HVZN.HHE. ML:1.6 0.000382 0.64 AML other m 2024-05-25T18:41:36.32
IV.HVZN.HNE. ML:1.8 0.000504 0.64 AML other m 2024-05-25T18:41:36.34
IV.HLNI.HHE. ML:1.8 0.00023400000000000002 0.12 AML other m 2024-05-25T18:41:37.65
IV.HLNI.HHN. ML:1.6 0.00015799999999999996 1.36 AML other m 2024-05-25T18:41:38.07
IV.HVIT.HHE. ML:1.5 0.0001905 0.96 AML other m 2024-05-25T18:41:38.96
IV.HVIT.HHN. ML:1.3 0.000126 0.96 AML other m 2024-05-25T18:41:38.60
IV.SSY.HHE. ML:1.4 0.000114 0.42 AML other m 2024-05-25T18:41:39.68
IV.SSY.HHN. ML:1.7 0.00023 0.44 AML other m 2024-05-25T18:41:40.92
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