Earthquake with magnitude of ML 1.9 on date 22-10-2020 and time 16:56:38 (Italy) in region 9 km N Ragalna (CT)

A magnitude ML 1.9 earthquake occured in region: 9 km N Ragalna (CT), on

  • 22-10-2020 14:56:38 (UTC)
  • 22-10-2020 16:56:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.72, 14.93 at 26 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
Ragalna CT 10 3924 3924
Biancavilla CT 10 24007 27931
Adrano CT 10 36122 64053
Santa Maria di Licodia CT 12 7641 71694
Bronte CT 12 19172 90866
Maletto CT 14 3920 94786
Nicolosi CT 14 7463 102249
Belpasso CT 14 28108 130357
Zafferana Etnea CT 15 9517 139874
PaternĂ² CT 16 48228 188102
Pedara CT 16 14102 202204
Milo CT 16 1087 203291
Trecastagni CT 17 10910 214201
Camporotondo Etneo CT 18 5023 219224
San Pietro Clarenza CT 18 7743 226967
Randazzo CT 18 10900 237867
Santa Venerina CT 19 8592 246459
Viagrande CT 19 8563 255022
Sant'Alfio CT 19 1582 256604
Mascalucia CT 19 31958 288562
Maniace CT 20 3765 292327
Centuripe EN 20 5470 297797
Tremestieri Etneo CT 20 20589 318386

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
76 Km SW of Messina (238439 inhabitants)
76 Km SW of Reggio di Calabria (183035 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
80 Km E of Caltanissetta (63360 inhabitants)
90 Km N of Ragusa (73313 inhabitants)
92 Km NE of Vittoria (63339 inhabitants)
94 Km NE of Gela (75827 inhabitants)
96 Km N of Modica (54633 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2020-10-22
14:56:38
37.72 14.93 26 2020-10-22
15:08:48
Sala Sismica INGV-Roma 84029931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 14:56:38 ± 0.32
Latitude 37.72 ± 0.01
Longitude 14.93 ± 0.03
Depth (km) 26 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84029931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2197
Semi-minor axis of confidence ellipse (meter) 1283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 2200
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.77162
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 84029931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-22 15:08:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MFNL.HHZ. 2020-10-22T14:57:24.54 3.0 undecidable manual Sg 1.01 0
IV.PIPA.HHZ. 2020-10-22T14:57:21.94 3.0 positive manual Pg 4.12 0
IV.HAVL.HHZ. 2020-10-22T14:57:04.29 1.0 undecidable manual S 169 0.7716 101 -0.24 22
IV.HLNI.HHZ. 2020-10-22T14:56:54.16 0.6 undecidable manual S 187 0.3705 115 0.99 37
IV.MSFR.HHZ. 2020-10-22T14:56:54.86 0.6 undecidable manual S 320 0.4155 112 0.48 45
IV.HAVL.HHZ. 2020-10-22T14:56:53.33 0.6 negative manual P 169 0.7716 101 -0.34 43
IV.GALF.HHZ. 2020-10-22T14:56:50.91 3.0 undecidable manual S 269 0.2887 123 -0.13 0
IV.MSFR.HHZ. 2020-10-22T14:56:48.03 0.1 undecidable manual P 320 0.4155 112 0.22 95
IV.HLNI.HHZ. 2020-10-22T14:56:46.88 0.6 positive manual P 187 0.3705 115 -0.24 47
IV.ECTS.HHZ. 2020-10-22T14:56:45.08 0.1 undecidable manual P 42 0.223 131 0.09 100
IV.GALF.HHZ. 2020-10-22T14:56:45.36 1.0 positive manual P 269 0.2887 123 -0.52 22
IV.EPIT.HHZ. 2020-10-22T14:56:44.22 0.1 undecidable manual P 46 0.1376 146 0.22 99
IV.EPZF.HHZ. 2020-10-22T14:56:43.38 0.3 positive manual P 331 0.1223 149 -0.48 70
IV.EMSG.HHZ. 2020-10-22T14:56:43.41 0.1 positive manual P 8 0.1052 153 -0.31 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.1 0.0007220965 0.5376 AML other m 2020-10-22T14:56:51.60
IV.EPZF.HHN. ML:2 0.00048688145 0.3072 AML other m 2020-10-22T14:56:49.08
IV.EMSG.HHE. ML:2 0.0005996585 0.448 AML other m 2020-10-22T14:56:55.60
IV.EMSG.HHN. ML:2 0.0005199436 0.4608 AML other m 2020-10-22T14:56:48.72
IV.HLNI.HHE. ML:1.4 7.0121185E-5 0.1024 AML other m 2020-10-22T14:56:56.61
IV.HLNI.HHN. ML:1.5 8.693924E-5 0.128 AML other m 2020-10-22T14:56:56.51
IV.MSFR.HHE. ML:1.1 3.078611E-5 0.896 AML other m 2020-10-22T14:57:02.40
IV.MSFR.HHN. ML:1.1 3.003854E-5 0.9984 AML other m 2020-10-22T14:57:08.01
IV.HAVL.HHE. ML:2.2 0.0002002473 0.1664 AML other m 2020-10-22T14:57:08.43
IV.HAVL.HHN. ML:2.3 0.00025385015 0.256 AML other m 2020-10-22T14:57:08.16
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download