Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 27-12-2019 and time 08:40:56 (Italy) in region 5 km SE Cerreto di Spoleto (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Cerreto di Spoleto (PG), on

  • 27-12-2019 07:40:56 (UTC)
  • 27-12-2019 08:40:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7800, 12.9520 at 8 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
Cerreto di Spoleto PG 5 1075 1075
Vallo di Nera PG 7 364 1439
Poggiodomo PG 8 117 1556
Cascia PG 9 3217 4773
Sant'Anatolia di Narco PG 11 564 5337
Norcia PG 12 4957 10294
Scheggino PG 12 461 10755
Sellano PG 12 1079 11834
Preci PG 13 724 12558
Monteleone di Spoleto PG 14 599 13157
Campello sul Clitunno PG 15 2442 15599
Spoleto PG 18 38218 53817
Trevi PG 20 8469 62286

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SE of Foligno (57155 inhabitants)
35 Km NE of Terni (111501 inhabitants)
59 Km SE of Perugia (166134 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
63 Km W of Teramo (54892 inhabitants)
80 Km NE of Viterbo (67173 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 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 1.0 2019-12-27
07:40:56		 42.7803 12.9518 8 2019-12-27
07:46:56		 Sala Sismica INGV-Roma 75013691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-27 07:40:56 ± 0.09
Latitude 42.7803 ± 0.0018
Longitude 12.9518 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75013691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 421
Semi-minor axis of confidence ellipse (meter) 275
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 75013691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-27 07:46:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LRP.EHZ. 2019-12-27T07:41:25.79 3.0 undecidable manual S -1.7 0
IT.PLTA.HNZ. 2019-12-27T07:41:18.86 3.0 undecidable manual Pg 0.03 0
IV.TOLF.HHZ. 2019-12-27T07:41:11.34 3.0 undecidable manual P 0.38 0
IV.SAMA.EHZ. 2019-12-27T07:41:09.60 3.0 positive manual P -0.78 0
IV.MC2.EHZ. 2019-12-27T07:41:05.28 0.3 undecidable manual S 53 24.1536 109 -0.12 73
IV.CESI.HHZ. 2019-12-27T07:41:05.61 0.6 undecidable manual S 351 25.2525 108 -0.14 49
IV.CSP1.EHZ. 2019-12-27T07:41:04.32 1.0 undecidable manual P 31 40.2264 50 -0.17 23
IV.LNSS.HHZ. 2019-12-27T07:41:04.25 0.3 undecidable manual S 160 20.9679 112 -0.11 74
IV.NRCA.HHZ. 2019-12-27T07:41:02.33 0.3 undecidable manual S 66 14.4744 120 0 76
IV.CESI.HHZ. 2019-12-27T07:41:01.94 0.6 negative manual P 351 25.2525 108 0.09 49
IV.LNSS.HHZ. 2019-12-27T07:41:01.08 0.1 undecidable manual P 160 20.9679 112 0.03 100
IV.MC2.EHZ. 2019-12-27T07:41:01.72 0.1 undecidable manual P 53 24.1536 109 0.07 99
IV.NRCA.HHZ. 2019-12-27T07:41:00.02 0.1 undecidable manual P 66 14.4744 120 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0001645 0.14 AML other m 2019-12-27T07:41:02.47
IV.NRCA.HHE. ML:1.1 0.00011934999999999999 0.1 AML other m 2019-12-27T07:41:02.59
IV.LNSS.HHE. ML:1.0 0.00007005 0.5 AML other m 2019-12-27T07:41:04.89
IV.LNSS.HHN. ML:0.8 0.00004514999999999999 0.54 AML other m 2019-12-27T07:41:05.26
IV.NRCA.HNE. ML:1.1 0.0001342198 0.1984 AML other m 2019-12-27T07:41:02.59
IV.NRCA.HNN. ML:1.2 0.0001498139 1.248 AML other m 2019-12-27T07:41:02.53
IV.CESI.HHE. ML:0.4 0.000014542948 0.16 AML other m 2019-12-27T07:41:06.18
IV.CESI.HHN. ML:0.7 0.00002849161 0.2944 AML other m 2019-12-27T07:41:05.91
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