Earthquake with magnitude of ML 2.5 on date 22-12-2018 and time 10:32:18 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 2.5 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 22-12-2018 10:32:18 (UTC)
  • 22-12-2018 11:32:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.418, 12.745 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NE of Trapani (68759 inhabitants)
64 Km NW of Palermo (674435 inhabitants)
74 Km NE of Marsala (83194 inhabitants)
77 Km NW of Bagheria (55387 inhabitants)
86 Km N of Mazara del Vallo (51718 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.5 2018-12-22
10:32:18
38.4183 12.7447 8 2019-06-04
09:16:08
Bollettino Sismico Italiano INGV 65075511
Reviewed
Rev100
ML 2.5 2018-12-22
10:32:17
38.3758 12.7582 2 2018-12-22
10:54:35
Sala Sismica INGV-Roma 64082291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-22 10:32:18 ± 0.49
Latitude 38.4183 ± 0.0198
Longitude 12.7447 ± 0.0356
Depth (km) 8 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 65075511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3380
Semi-minor axis of confidence ellipse (meter) 1820
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 3380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 211
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.68
Epicentral distance of station closest to the epicenter (degree) 0.4002
Epicentral distance of station farthest from the epicenter (degree) 2.22942
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 65075511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-30 11:13:13

ML:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 64082291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-22 10:54:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2018-12-22T10:33:17.90 0.6 undecidable manual S 122 1.9902 38 -0.77 23
IV.RAFF.HHZ. 2018-12-22T10:33:14.10 0.6 undecidable manual S 133 1.7492 38 1.19 22
IV.CSLB.HHZ. 2018-12-22T10:32:57.30 0.6 undecidable manual S 115 1.1385 50 1.68 22
IV.SSY.HHZ. 2018-12-22T10:32:55.91 0.6 undecidable manual P 124 2.2294 38 -0.75 19
IV.HLNI.HHZ. 2018-12-22T10:32:52.33 0.3 undecidable manual P 122 1.9902 38 -1.01 31
MN.CLTB.HHZ. 2018-12-22T10:32:51.00 0.3 undecidable manual S 156 0.9182 50 1.9 29
IV.RAFF.HHZ. 2018-12-22T10:32:49.40 0.3 undecidable manual P 133 1.7492 38 -0.62 43
IV.MARS.EHZ. 2018-12-22T10:32:43.00 0.6 undecidable manual S 192 0.6799 50 0.97 36
IV.PETRA.HHZ. 2018-12-22T10:32:42.38 0.3 undecidable manual P 118 1.2258 50 0.85 50
IV.CRJA.HHZ. 2018-12-22T10:32:42.70 0.3 undecidable manual S 162 0.6493 50 1.57 39
IV.CSLB.HHZ. 2018-12-22T10:32:38.67 0.1 undecidable manual P 115 1.1385 50 -1.36 53
IV.ALJA.HHZ. 2018-12-22T10:32:38.07 0.3 undecidable manual P 130 1.0378 50 -0.25 64
IV.MPG.SHZ. 2018-12-22T10:32:37.80 0.3 undecidable manual S 118 0.5468 50 -0.29 70
MN.CLTB.HHZ. 2018-12-22T10:32:36.87 0.1 undecidable manual P 156 0.9182 50 0.6 80
IV.USI.HHZ. 2018-12-22T10:32:36.50 0.1 undecidable manual S 49 0.4461 50 1.39 60
IV.MBFT.HHZ. 2018-12-22T10:32:35.10 0.3 undecidable manual S 161 0.5 50 -1.6 40
IV.CAVT.HHZ. 2018-12-22T10:32:34.45 0.3 undecidable manual P 179 0.7392 50 1.24 47
IV.MFNL.HHZ. 2018-12-22T10:32:32.05 0.3 undecidable manual P 167 0.643 50 0.49 66
IV.MARS.EHZ. 2018-12-22T10:32:32.42 0.3 undecidable manual P 192 0.6799 50 0.23 69
IV.CORL.HHZ. 2018-12-22T10:32:31.98 0.3 undecidable manual P 140 0.6835 50 -0.28 69
IV.CRJA.HHZ. 2018-12-22T10:32:31.41 0.1 undecidable manual P 162 0.6493 50 -0.26 92
IV.MBFT.HHZ. 2018-12-22T10:32:28.05 0.3 undecidable manual P 161 0.5 50 -1.06 53
IV.MPG.SHZ. 2018-12-22T10:32:28.57 0.1 negative manual P 118 0.5468 50 -1.35 61
IV.USI.HHZ. 2018-12-22T10:32:28.11 0.1 negative manual P 49 0.4461 50 -0.09 100
IV.ERC.EHZ. 2018-12-22T10:32:26.00 0.6 undecidable manual P 198 0.4002 50 -1.41 30
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RESU.HHE. ML:0 0.0002685 0.7 AML other m 2018-12-22T10:33:09.20
IV.RESU.HHN. ML:0 0.000324 1.3 AML other m 2018-12-22T10:33:17.29
IV.ERC.EHN. ML:2.4 0.00080586985 0.2368 AML other m 2018-12-22T10:32:36.39
IV.ERC.EHE. ML:2.4 0.00069860995 0.1984 AML other m 2018-12-22T10:32:33.74
IV.MBFT.HNE. ML:2 0.0002108644 0.3456 AML other m 2018-12-22T10:32:38.04
IV.MBFT.HNN. ML:1.9 0.00016932585 0.4608 AML other m 2018-12-22T10:32:38.59
IV.MBFT.HHE. ML:2.8 0.001545435 0.3584 AML other m 2018-12-22T10:32:38.04
IV.MBFT.HHN. ML:2.6 0.0010314008 0.3776 AML other m 2018-12-22T10:32:37.64
IV.CRJA.HHN. ML:2.7 0.0007711121 0.3008 AML other m 2018-12-22T10:32:43.28
IV.CRJA.HHE. ML:2.6 0.00065007315 0.544 AML other m 2018-12-22T10:32:43.59
IV.CORL.HHN. ML:2.7 0.00072365785 0.3584 AML other m 2018-12-22T10:32:49.64
IV.CORL.HHE. ML:2.9 0.0011232645 0.2816 AML other m 2018-12-22T10:32:45.31
IV.MARS.EHE. ML:2.4 0.00033414355 0.4992 AML other m 2018-12-22T10:32:49.80
IV.MARS.EHN. ML:2.2 0.00023841875 0.2176 AML other m 2018-12-22T10:32:44.77
IV.CAVT.HHE. ML:2.5 0.00042729865 0.48 AML other m 2018-12-22T10:32:47.00
MN.CLTB.HHE. ML:3.2 0.0014000175 0.4992 AML other m 2018-12-22T10:32:54.97
IV.ALJA.HHE. ML:2.7 0.000386058 0.3968 AML other m 2018-12-22T10:32:57.77
IV.ALJA.HHN. ML:2.6 0.0002812968 0.4608 AML other m 2018-12-22T10:33:09.18
IV.PETRA.HHE. ML:2.5 0.0002110502 0.7424 AML other m 2018-12-22T10:33:11.90
IV.PETRA.HHN. ML:2.6 0.00021317415 0.6016 AML other m 2018-12-22T10:33:08.64
IV.RAFF.HHN. ML:2.4 7.999667E-5 0.64 AML other m 2018-12-22T10:33:22.61
IV.RAFF.HHE. ML:2.3 6.0229835E-5 0.4608 AML other m 2018-12-22T10:33:17.96
IV.HLNI.HHE. ML:2.2 4.0591605E-5 0.48 AML other m 2018-12-22T10:33:35.95
IV.HLNI.HHN. ML:2.4 5.356916E-5 0.3392 AML other m 2018-12-22T10:33:19.07
IV.SSY.HHN. ML:3.2 0.0003422131 0.224 AML other m 2018-12-22T10:33:29.97
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download