Earthquake with magnitude of ML 1.8 on date 26-01-2021 and time 08:31:48 (Italy) in region 4 km NW Randazzo (CT)

A magnitude ML 1.8 earthquake occured in region: 4 km NW Randazzo (CT), on

  • 26-01-2021 07:31:48 (UTC)
  • 26-01-2021 08:31:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.91, 14.92 at 32 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
Randazzo CT 4 10900 10900
Santa Domenica Vittoria ME 4 980 11880
Roccella Valdemone ME 9 666 12546
Floresta ME 9 485 13031
Maletto CT 10 3920 16951
Maniace CT 11 3765 20716
Moio Alcantara ME 12 717 21433
Malvagna ME 12 733 22166
Bronte CT 15 19172 41338
Montalbano Elicona ME 16 2287 43625
Ucria ME 16 1058 44683
Tortorici ME 16 6435 51118
San Piero Patti ME 17 2915 54033
Raccuja ME 17 1041 55074
Castiglione di Sicilia CT 18 3215 58289
Francavilla di Sicilia ME 19 3945 62234
Galati Mamertino ME 19 2627 64861
CesarĂ² ME 19 2439 67300
Longi ME 20 1473 68773

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of Acireale (52622 inhabitants)
47 Km NW of Catania (314555 inhabitants)
64 Km SW of Messina (238439 inhabitants)
68 Km W of Reggio di Calabria (183035 inhabitants)
88 Km NE of Caltanissetta (63360 inhabitants)
100 Km NW of Siracusa (122291 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.8 2021-01-26
07:31:48
37.91 14.92 32 2021-01-26
07:47:23
Sala Sismica INGV-Roma 86588691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-26 07:31:48 ± 0.25
Latitude 37.91 ± 0.01
Longitude 14.92 ± 0.01
Depth (km) 32 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86588691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 916
Semi-minor axis of confidence ellipse (meter) 553
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 920
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.64841
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 86588691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-26 07:47:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2021-01-26T07:33:10.40 1.0 undecidable manual S 163 0.6484 109 5.957 0
IV.RESU.HHZ. 2021-01-26T07:32:16.02 3.0 undecidable manual S 1.81 0
IV.HLNI.HHZ. 2021-01-26T07:32:08.00 0.1 undecidable manual S 184 0.5585 112 -0.34 87
IV.MSFR.HHE. 2021-01-26T07:32:01.17 0.6 undecidable manual S 296 0.2878 131 -0.24 48
IV.AIO.HHZ. 2021-01-26T07:32:00.50 0.6 undecidable manual S 75 0.2563 134 -0.22 49
IV.HAGA.HHZ. 2021-01-26T07:32:00.96 1.0 undecidable manual P 163 0.6484 109 -0.32 22
IV.MSRU.HHE. 2021-01-26T07:32:00.53 0.6 undecidable manual P 52 0.5855 111 0.26 45
IV.HLNI.HHZ. 2021-01-26T07:31:59.86 0.3 positive manual P 184 0.5585 112 0.02 71
IV.ECTS.HHZ. 2021-01-26T07:31:58.80 1.0 undecidable manual S 99 0.161 148 -0.15 25
IV.MUCR.HHZ. 2021-01-26T07:31:58.11 0.6 undecidable manual S 345 0.1412 151 -0.54 47
IV.EPZF.HHZ. 2021-01-26T07:31:58.90 0.6 undecidable manual S 211 0.0953 160 0.81 42
IV.MPNC.HHZ. 2021-01-26T07:31:57.80 0.1 positive manual P 55 0.4173 120 0.14 95
IV.MSFR.HHE. 2021-01-26T07:31:56.01 0.6 undecidable manual P 296 0.2878 131 0.17 49
IV.GALF.HHE. 2021-01-26T07:31:56.98 1.0 undecidable manual P 235 0.3399 126 0.43 23
IV.AIO.HHZ. 2021-01-26T07:31:55.36 0.1 positive manual P 75 0.2563 134 -0.08 100
IV.MUCR.HHZ. 2021-01-26T07:31:54.00 0.6 undecidable manual P 345 0.1412 151 -0.25 49
IV.EPZF.HHZ. 2021-01-26T07:31:54.23 0.3 undecidable manual P 211 0.0953 160 0.3 74
IV.ECTS.HHZ. 2021-01-26T07:31:54.52 0.6 undecidable manual P 99 0.161 148 0.1 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHE. ML:1.6 0.0001609237 0.32 AML other m 2021-01-26T07:31:59.39
IV.MUCR.HHN. ML:1.9 0.0003224971 0.3392 AML other m 2021-01-26T07:31:58.75
IV.EPZF.HHN. ML:0 0.0017411505 0.4032 AML other m 2021-01-26T07:31:59.74
IV.EPZF.HHE. ML:0 0.0015087015 0.3968 AML other m 2021-01-26T07:31:59.62
IV.AIO.HHN. ML:1.7 0.0001814183 0.2176 AML other m 2021-01-26T07:32:00.75
IV.AIO.HHE. ML:1.7 0.000172060915 0.2048 AML other m 2021-01-26T07:32:03.30
IV.HLNI.HHN. ML:1.8 0.000104846595 0.1408 AML other m 2021-01-26T07:32:08.80
IV.HLNI.HHE. ML:1.7 9.1498055E-5 0.16 AML other m 2021-01-26T07:32:08.39
IV.MPNC.HHE. ML:1.9 0.0001925785 0.48 AML other m 2021-01-26T07:32:09.00
IV.MPNC.HHN. ML:2 0.00022314715 0.7168 AML other m 2021-01-26T07:32:06.68
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