Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 27-12-2019 and time 01:30:04 (Italy) in region 4 km SE Balsorano (AQ)

A magnitude ML 0.4 earthquake occured in region: 4 km SE Balsorano (AQ), on

  • 27-12-2019 00:30:04 (UTC)
  • 27-12-2019 01:30:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7870, 13.5990 at 14 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
Balsorano AQ 4 3569 3569
Pescosolido FR 6 1555 5124
Sora FR 7 26144 31268
San Vincenzo Valle Roveto AQ 8 2347 33615
Campoli Appennino FR 9 1725 35340
Villavallelonga AQ 9 919 36259
Broccostella FR 10 2741 39000
Collelongo AQ 11 1233 40233
Isola del Liri FR 12 11715 51948
Castelliri FR 13 3454 55402
Posta Fibreno FR 13 1139 56541
Fontechiari FR 14 1303 57844
Morino AQ 15 1448 59292
Vicalvi FR 15 783 60075
Arpino FR 15 7262 67337
Civita d'Antino AQ 15 979 68316
Pescasseroli AQ 16 2203 70519
Alvito FR 16 2713 73232
Monte San Giovanni Campano FR 18 12929 86161
Lecce nei Marsi AQ 18 1702 87863
Veroli FR 18 20560 108423
Boville Ernica FR 19 8737 117160
Ortucchio AQ 19 1860 119020
Opi AQ 19 420 119440
Collepardo FR 19 968 120408
Casalvieri FR 20 2698 123106
Trasacco AQ 20 6246 129352
Fontana Liri FR 20 2953 132305
San Donato Val di Comino FR 20 2107 134412
Bisegna AQ 20 223 134635

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km S of L'Aquila (69753 inhabitants)
68 Km NE of Latina (125985 inhabitants)
69 Km E of Velletri (53303 inhabitants)
69 Km E of Tivoli (56533 inhabitants)
76 Km E of Guidonia Montecelio (88673 inhabitants)
79 Km SW of Chieti (51815 inhabitants)
82 Km E of Aprilia (73446 inhabitants)
89 Km E of Anzio (54211 inhabitants)
91 Km SW of Pescara (121014 inhabitants)
92 Km E of Pomezia (62966 inhabitants)
93 Km SW of Montesilvano (53738 inhabitants)
93 Km E of Roma (2864731 inhabitants)
98 Km S of Teramo (54892 inhabitants)
100 Km NW of Caserta (76326 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 		Md 1.0
ML 0.4 		2019-12-27
00:30:04		 41.7868 13.5992 14 2020-02-28
16:42:16		 Bollettino Sismico Italiano INGV 75019661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-27 00:30:04 ± 0.05
Latitude 41.7868 ± 0.0027
Longitude 13.5992 ± 0.0024
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75019661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 226
Semi-minor axis of confidence ellipse (meter) 135
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.36512
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 75019661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-27 11:41:41

Md:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 2
Type of magnitude Md
Reference to an origin 75019661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-27 11:41:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERA.HNN. 2019-12-27T00:30:18.11 0.3 undecidable manual S 121 40.5261 96 0.03 72
IV.GIUL.HHZ. 2019-12-27T00:30:17.69 0.6 undecidable manual S 228 38.2284 96 0.24 46
IV.INTR.HHE. 2019-12-27T00:30:16.75 0.3 undecidable manual S 45 35.4423 97 0.02 73
IV.PTQR.HHZ. 2019-12-27T00:30:15.29 0.3 undecidable manual S 328 30.747 99 -0.21 70
IV.GUAR.HNN. 2019-12-27T00:30:13.54 0.3 undecidable manual S 272 23.754 104 -0.11 72
IV.CERA.HNN. 2019-12-27T00:30:12.43 0.3 undecidable manual P 121 40.5261 96 -0.03 72
IT.OPI.HGE. 2019-12-27T00:30:12.45 0.3 undecidable manual S 93 19.1697 110 -0.03 75
IV.GIUL.HHZ. 2019-12-27T00:30:12.09 0.1 undecidable manual P 228 38.2284 96 0 96
IV.INTR.HHE. 2019-12-27T00:30:11.68 0.1 undecidable manual P 45 35.4423 97 0.01 97
IV.LRP.EHZ. 2019-12-27T00:30:11.36 0.3 undecidable manual S 184 15.5733 118 -0.23 72
IV.GUAR.HNN. 2019-12-27T00:30:10.04 0.1 undecidable manual P 272 23.754 104 0.15 97
IV.VVLD.HHZ. 2019-12-27T00:30:10.31 0.3 undecidable manual S 12 9.3795 137 0.03 75
IV.PTQR.HHZ. 2019-12-27T00:30:10.81 0.6 undecidable manual P 328 30.747 99 -0.15 47
IV.POFI.HHE. 2019-12-27T00:30:10.76 0.3 undecidable manual S 129 12.0768 128 -0.06 76
IT.OPI.HGE. 2019-12-27T00:30:09.05 0.3 undecidable manual P 93 19.1697 110 -0.17 73
IV.POFI.HHE. 2019-12-27T00:30:08.32 0.1 negative manual P 129 12.0768 128 0.06 100
IV.VVLD.HHZ. 2019-12-27T00:30:08.19 0.1 undecidable manual P 12 9.3795 137 0.24 97
IV.LRP.EHZ. 2019-12-27T00:30:08.79 0.1 undecidable manual P 184 15.5733 118 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HNE. ML:0.8 0.00006809071 0.52 AML other m 2019-12-27T00:30:11.51
IV.VVLD.HHE. ML:0.4 0.000026425370000000004 0.12 AML other m 2019-12-27T00:30:10.81
IV.VVLD.HHN. ML:0.2 0.0000173463585 0.12 AML other m 2019-12-27T00:30:10.93
IV.VVLD.HNN. ML:0.7 0.0000503560135 0.34 AML other m 2019-12-27T00:30:13.26
IV.POFI.HHE. ML:0.2 0.000014539415 0.1 AML other m 2019-12-27T00:30:11.60
IV.POFI.HHN. ML:0.0 0.000010625021 0 AML other m 2019-12-27T00:30:11.92
IV.LRP.EHE. ML:0.9 0.000071643185 0.18 AML other m 2019-12-27T00:30:11.80
IV.LRP.EHN. ML:0.4 0.000018321894999999998 0.06 AML other m 2019-12-27T00:30:11.87
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