Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 23-12-2019 and time 07:06:23 (UTC) in region 1 km W Gualdo (MC)

A magnitude ML 1.9 earthquake occured in region: 1 km W Gualdo (MC), on

  • 23-12-2019 07:06:23 (UTC)
  • 23-12-2019 08:06:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0700, 13.3280 at 22 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.

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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
Gualdo MC 1 815 815
Sarnano MC 4 3264 4079
San Ginesio MC 4 3498 7577
Sant'Angelo in Pontano MC 7 1436 9013
Cessapalombo MC 7 512 9525
Penna San Giovanni MC 8 1108 10633
Camporotondo di Fiastrone MC 9 563 11196
Ripe San Ginesio MC 9 852 12048
Amandola FM 10 3629 15677
Monte San Martino MC 10 765 16442
Colmurano MC 11 1263 17705
Caldarola MC 11 1823 19528
Bolognola MC 12 142 19670
Smerillo FM 12 365 20035
Falerone FM 13 3337 23372
Belforte del Chienti MC 13 1886 25258
Loro Piceno MC 13 2401 27659
Acquacanina MC 13 121 27780
Servigliano FM 14 2336 30116
Montappone FM 14 1682 31798
Montefortino FM 14 1178 32976
Montefalcone Appennino FM 14 424 33400
Monte Vidon Corrado FM 14 731 34131
Comunanza AP 14 3166 37297
Fiastra MC 14 559 37856
Urbisaglia MC 15 2628 40484
Santa Vittoria in Matenano FM 15 1330 41814
Massa Fermana FM 15 963 42777
Tolentino MC 16 20069 62846
Serrapetrona MC 16 966 63812
Monteleone di Fermo FM 17 395 64207
Belmonte Piceno FM 17 646 64853
Force AP 18 1354 66207
Montelparo FM 18 778 66985
Mogliano MC 18 4696 71681
Montegiorgio FM 18 6851 78532
Monsampietro Morico FM 19 659 79191
Montemonaco AP 19 604 79795
Fiordimonte MC 20 202 79997
Pievebovigliana MC 20 866 80863

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
63 Km S of Ancona (100861 inhabitants)
76 Km E of Perugia (166134 inhabitants)
79 Km NE of Terni (111501 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 inhabitants)
99 Km SE of Pesaro (94582 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
Bulletin
Rev1000 		ML 1.9 2019-12-23
07:06:23		 43.0697 13.3277 22 2020-02-28
16:42:22		 Bollettino Sismico Italiano INGV 76243501
Reviewed
Rev100 		ML 1.9 2019-12-23
07:06:23		 43.0758 13.3128 22 2019-12-23
07:13:46		 Sala Sismica INGV-Roma 74910621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-23 07:06:23 ± 0.11
Latitude 43.0697 ± 0.0045
Longitude 13.3277 ± 0.0062
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76243501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 228
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00899
Epicentral distance of station farthest from the epicenter (degree) 0.74104
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 74910621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-23 07:13:46

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 76243501
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-05 14:44:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2019-12-23T07:06:49.07 0.6 undecidable manual S 309 82.251 99 0.87 35
IV.SSFR.HHZ. 2019-12-23T07:06:43.20 0.6 undecidable manual S 313 59.9955 103 0.84 37
IV.TERO.HHZ. 2019-12-23T07:06:41.89 0.6 undecidable manual S 156 54.4011 105 0.97 34
IV.ASSB.HHZ. 2019-12-23T07:06:41.24 0.6 undecidable manual S 267 54.3012 105 0.35 44
IV.PIEI.HHZ. 2019-12-23T07:06:37.67 0.3 undecidable manual P 309 82.251 99 -0.12 65
IV.CESI.HHZ. 2019-12-23T07:06:36.28 0.6 undecidable manual S 258 35.0427 114 0.25 46
IV.CING.HHN. 2019-12-23T07:06:36.11 0.6 undecidable manual S 343 35.5422 114 -0.05 47
IV.NRCA.HHZ. 2019-12-23T07:06:35.26 0.6 undecidable manual S 214 31.4463 118 0.11 47
IV.EL6.EHZ. 2019-12-23T07:06:35.93 0.6 undecidable manual S 328 34.1436 115 0.12 47
IV.SSFR.HHZ. 2019-12-23T07:06:34.48 0.3 undecidable manual P 313 59.9955 103 0.07 68
IV.ASSB.HHZ. 2019-12-23T07:06:33.47 0.1 undecidable manual P 267 54.3012 105 -0.09 91
IV.TERO.HHZ. 2019-12-23T07:06:33.43 0.3 undecidable manual P 156 54.4011 105 -0.15 68
IV.FDMO.HHZ. 2019-12-23T07:06:32.29 0.6 undecidable manual S 259 19.869 132 -0.32 46
IV.MMO1.EHZ. 2019-12-23T07:06:32.30 0.6 undecidable manual S 180 18.87 134 -0.12 49
IV.MNTP.HNZ. 2019-12-23T07:06:31.88 0.6 undecidable manual S 57 13.6752 144 0.37 46
IV.MF5.EHZ. 2019-12-23T07:06:31.92 0.6 undecidable manual S 130 14.0748 143 0.36 46
IV.CING.HHN. 2019-12-23T07:06:30.56 0.3 undecidable manual P 343 35.5422 114 -0.27 68
IV.CSP1.EHZ. 2019-12-23T07:06:30.70 0.6 undecidable manual S 284 10.2786 152 -0.32 47
IV.EL6.EHZ. 2019-12-23T07:06:30.45 0.1 undecidable manual P 328 34.1436 115 -0.18 93
IV.CESI.HHZ. 2019-12-23T07:06:30.84 0.3 undecidable manual P 258 35.0427 114 0.08 71
IV.GUMA.HNE. 2019-12-23T07:06:30.34 0.6 undecidable manual S 141 0.999 177 0 51
IV.NRCA.HHZ. 2019-12-23T07:06:30.13 0.1 positive manual P 214 31.4463 118 -0.12 95
IV.SAP2.EHZ. 2019-12-23T07:06:30.66 0.6 undecidable manual S 63 6.4935 161 0.04 50
IV.MF5.EHZ. 2019-12-23T07:06:28.33 0.1 negative manual P 130 14.0748 143 0.15 96
IV.MMO1.EHZ. 2019-12-23T07:06:28.49 0.1 positive manual P 180 18.87 134 -0.19 96
IV.FDMO.HHZ. 2019-12-23T07:06:28.54 0.1 positive manual P 259 19.869 132 -0.24 94
IV.MNTP.HNZ. 2019-12-23T07:06:28.17 0.3 undecidable manual P 57 13.6752 144 0.02 74
IV.GUMA.HNE. 2019-12-23T07:06:27.35 0.1 undecidable manual P 141 0.999 177 -0.12 100
IV.SAP2.EHZ. 2019-12-23T07:06:27.51 0.1 undecidable manual P 63 6.4935 161 -0.12 99
IV.CSP1.EHZ. 2019-12-23T07:06:27.64 0.1 undecidable manual P 284 10.2786 152 -0.22 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:1.6 0.000279 0.16 AML other m 2019-12-23T07:06:30.87
IV.CSP1.EHN. ML:1.6 0.0002845 1.64 AML other m 2019-12-23T07:06:30.05
IV.SAP2.EHN. ML:2.1 0.0009195 1.08 AML other m 2019-12-23T07:06:30.89
IV.MF5.EHN. ML:2.1 0.0007435 0.12 AML other m 2019-12-23T07:06:32.10
IV.MF5.EHE. ML:2.0 0.0005639999999999999 0.12 AML other m 2019-12-23T07:06:32.02
IV.FDMO.HHE. ML:1.6 0.00020750000000000003 0.2 AML other m 2019-12-23T07:06:32.46
IV.SAP2.EHE. ML:1.4 0.0001736 0.48 AML other m 2019-12-23T07:06:32.76
IV.FDMO.HHN. ML:1.6 0.0001895 0.78 AML other m 2019-12-23T07:06:32.56
IV.NRCA.HNE. ML:2.0 0.00036350000000000005 1.14 AML other m 2019-12-23T07:06:35.38
IV.NRCA.HHE. ML:2.0 0.000379 0.6 AML other m 2019-12-23T07:06:35.38
IV.NRCA.HHN. ML:2.0 0.00036899999999999997 0.82 AML other m 2019-12-23T07:06:36.44
IV.NRCA.HNN. ML:2.1 0.000496 0.84 AML other m 2019-12-23T07:06:36.45
IV.TERO.HHN. ML:1.4 0.00005365 0.5 AML other m 2019-12-23T07:06:42.30
IV.SSFR.HHN. ML:2.0 0.00019250000000000002 0.2 AML other m 2019-12-23T07:06:44.35
IV.SSFR.HHE. ML:1.9 0.0001645 0.18 AML other m 2019-12-23T07:06:44.26
IV.TERO.HHE. ML:1.4 0.00004910000000000001 0.42 AML other m 2019-12-23T07:06:44.68
IV.SSFR.HNE. ML:2.2 0.000277 1.1 AML other m 2019-12-23T07:06:44.57
IV.SSFR.HNN. ML:2.1 0.00022999999999999998 0.46 AML other m 2019-12-23T07:06:45.36
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