Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 18-02-2020 and time 22:23:19 (UTC) in region 1 km SE Acquacanina (MC)

A magnitude ML 1.4 earthquake occured in region: 1 km SE Acquacanina (MC), on

  • 18-02-2020 22:23:19 (UTC)
  • 18-02-2020 23:23:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0220, 13.1790 at 31 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
Acquacanina MC 1 121 121
Fiastra MC 2 559 680
Bolognola MC 5 142 822
Fiordimonte MC 7 202 1024
Pievebovigliana MC 9 866 1890
Ussita MC 9 444 2334
Sarnano MC 10 3264 5598
Pieve Torina MC 11 1458 7056
Cessapalombo MC 12 512 7568
Visso MC 12 1107 8675
Muccia MC 13 915 9590
Caldarola MC 14 1823 11413
Gualdo MC 14 815 12228
Castelsantangelo sul Nera MC 14 281 12509
Camporotondo di Fiastrone MC 14 563 13072
Monte Cavallo MC 15 145 13217
San Ginesio MC 15 3498 16715
Amandola FM 15 3629 20344
Camerino MC 16 6974 27318
Montefortino FM 16 1178 28496
Belforte del Chienti MC 17 1886 30382
Serrapetrona MC 17 966 31348
Montemonaco AP 18 604 31952
Serravalle di Chienti MC 19 1070 33022
Preci PG 20 724 33746
Sant'Angelo in Pontano MC 20 1436 35182

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
65 Km E of Perugia (166134 inhabitants)
67 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
77 Km N of L'Aquila (69753 inhabitants)
92 Km S of Fano (60888 inhabitants)
97 Km NW of Montesilvano (53738 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 1.4 2020-02-18
22:23:19		 43.0222 13.1792 31 2020-02-18
22:30:19		 Sala Sismica INGV-Roma 76637371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-18 22:23:19 ± 0.21
Latitude 43.0222 ± 0.0072
Longitude 13.1792 ± 0.0086
Depth (km) 31 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76637371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 825
Semi-minor axis of confidence ellipse (meter) 475
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.50452
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 76637371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-18 22:30:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2020-02-18T22:23:38.77 0.3 undecidable manual S 325 55.9995 113 0.43 63
IV.SMA1.EHZ. 2020-02-18T22:23:36.26 0.3 undecidable manual S 164 45.2214 119 0.5 64
IV.ATCC.EHZ. 2020-02-18T22:23:36.79 0.1 undecidable manual S 293 47.3193 118 0.56 83
IV.MNTT.EHZ. 2020-02-18T22:23:34.54 0.3 undecidable manual S 82 34.0437 127 1.29 46
IV.EL6.EHZ. 2020-02-18T22:23:33.24 0.1 undecidable manual S 350 34.6431 127 -0.13 95
IV.CESI.HHZ. 2020-02-18T22:23:31.21 0.1 undecidable manual S 265 22.3554 140 0.23 95
IV.MF5.EHZ. 2020-02-18T22:23:31.39 0.1 undecidable manual S 99 23.0547 139 0.28 93
IV.NRCA.HHZ. 2020-02-18T22:23:30.98 0.1 undecidable manual S 194 21.5673 141 0.12 97
IV.SSFR.HHZ. 2020-02-18T22:23:30.29 0.1 undecidable manual P 325 55.9995 113 -0.23 89
IV.MMO1.EHZ. 2020-02-18T22:23:30.04 0.1 undecidable manual S 139 18.1707 146 -0.27 94
IV.ATCC.EHZ. 2020-02-18T22:23:29.40 0.1 undecidable manual P 293 47.3193 118 0.1 92
IV.GUMA.HHZ. 2020-02-18T22:23:29.56 0.1 undecidable manual S 70 13.4754 154 -0.12 98
IV.MC2.EHZ. 2020-02-18T22:23:29.70 0.1 undecidable manual S 176 12.2766 156 0.14 98
IV.CSP1.EHZ. 2020-02-18T22:23:28.72 0.1 undecidable manual S 15 7.9809 164 -0.45 92
IV.SMA1.EHZ. 2020-02-18T22:23:28.77 0.1 undecidable manual P 164 45.2214 119 -0.25 90
IV.EL6.EHZ. 2020-02-18T22:23:27.28 0.1 undecidable manual P 350 34.6431 127 -0.37 90
IV.MNTT.EHZ. 2020-02-18T22:23:27.76 0.1 undecidable manual P 82 34.0437 127 0.18 93
IV.MF5.EHZ. 2020-02-18T22:23:26.26 0.1 negative manual P 99 23.0547 139 -0.08 97
IV.NRCA.HHZ. 2020-02-18T22:23:26.14 0.1 positive manual P 194 21.5673 141 -0.05 98
IV.CESI.HHZ. 2020-02-18T22:23:26.22 0.1 undecidable manual P 265 22.3554 140 -0.05 98
IV.MC2.EHZ. 2020-02-18T22:23:25.42 0.1 undecidable manual P 176 12.2766 156 -0.03 100
IV.MMO1.EHZ. 2020-02-18T22:23:25.63 0.1 undecidable manual P 139 18.1707 146 -0.25 95
IV.GUMA.HHZ. 2020-02-18T22:23:25.29 0.1 negative manual P 70 13.4754 154 -0.23 96
IV.CSP1.EHZ. 2020-02-18T22:23:24.87 0.1 positive manual P 15 7.9809 164 -0.35 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHN. ML:1.8 0.0002655 0.22 AML other m 2020-02-18T22:23:29.78
IV.GUMA.HHE. ML:1.6 0.0001975 1.52 AML other m 2020-02-18T22:23:30.93
IV.CESI.HHE. ML:1.4 0.00010745 0.14 AML other m 2020-02-18T22:23:31.37
IV.CESI.HHN. ML:1.6 0.000154 0.14 AML other m 2020-02-18T22:23:31.37
IV.NRCA.HHE. ML:1.3 0.00007575000000000001 0.12 AML other m 2020-02-18T22:23:31.47
IV.NRCA.HHN. ML:1.1 0.00004955 0.44 AML other m 2020-02-18T22:23:33.71
IV.SMA1.EHE. ML:1.2 0.000033350000000000004 0.24 AML other m 2020-02-18T22:23:36.54
IV.SMA1.EHN. ML:1.2 0.000039750000000000004 0.42 AML other m 2020-02-18T22:23:36.53
IV.ATCC.EHE. ML:1.4 0.000055900000000000004 0.6 AML other m 2020-02-18T22:23:37.36
IV.ATCC.EHN. ML:1.3 0.000048599999999999995 1.58 AML other m 2020-02-18T22:23:38.85
IV.SSFR.HHN. ML:1.5 0.00006104999999999999 0.26 AML other m 2020-02-18T22:23:39.12
IV.SSFR.HHE. ML:1.5 0.0000532 0.84 AML other m 2020-02-18T22:23:39.51
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