Earthquake with magnitude of ML 0.8 on date 30-12-2021 and time 06:27:45 (Italy) in region 5 km NE Cerreto di Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km NE Cerreto di Spoleto (PG), on

  • 30-12-2021 05:27:45 (UTC)
  • 30-12-2021 06:27:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8480, 12.9660 at 11 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.

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
Sellano PG 6 1079 2154
Preci PG 7 724 2878
Vallo di Nera PG 12 364 3242
Norcia PG 12 4957 8199
Visso MC 14 1107 9306
Cascia PG 15 3217 12523
Poggiodomo PG 15 117 12640
Campello sul Clitunno PG 16 2442 15082
Castelsantangelo sul Nera MC 16 281 15363
Sant'Anatolia di Narco PG 16 564 15927
Monte Cavallo MC 17 145 16072
Ussita MC 18 444 16516
Trevi PG 18 8469 24985
Scheggino PG 19 461 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
55 Km SE of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
99 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 0.8 2021-12-30
05:27:45
42.8477 12.966 11 2021-12-30
05:36:33
Sala Sismica INGV-Roma 99139741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-30 05:27:45 ± 0.05
Latitude 42.8477 ± 0.0027
Longitude 12.9660 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99139741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30037
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 99139741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-30 05:36:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2021-12-30T05:28:16.61 3.0 undecidable manual S -0.09 0
IV.ARVD.HHZ. 2021-12-30T05:27:58.65 3.0 positive manual P 0.19 0
IV.MMO1.EHZ. 2021-12-30T05:27:56.28 0.1 undecidable manual S 79 29.8479 50 -0.09 97
IV.MML1.EHZ. 2021-12-30T05:27:56.23 0.1 undecidable manual S 1 29.5482 50 -0.03 97
IV.CESI.HHZ. 2021-12-30T05:27:53.12 0.1 undecidable manual S 344 18.1707 120 0.03 99
IV.GAVE.EHZ. 2021-12-30T05:27:53.00 0.1 undecidable manual S 199 18.1707 120 -0.11 98
IV.MC2.EHZ. 2021-12-30T05:27:53.61 0.1 undecidable manual S 69 19.4694 118 0.12 98
IV.CSP1.EHZ. 2021-12-30T05:27:52.42 0.3 undecidable manual P 36 33.3444 50 -0.01 72
IV.MML1.EHZ. 2021-12-30T05:27:51.84 0.1 undecidable manual P 1 29.5482 50 0 97
IV.MMO1.EHZ. 2021-12-30T05:27:51.90 0.1 undecidable manual P 79 29.8479 50 0 97
IV.NRCA.HHZ. 2021-12-30T05:27:51.31 0.1 undecidable manual S 97 12.1767 131 -0.08 97
IV.FDMO.HHZ. 2021-12-30T05:27:50.65 0.1 undecidable manual P 25 23.1546 50 -0.21 95
IV.CESI.HHZ. 2021-12-30T05:27:50.03 0.1 undecidable manual P 344 18.1707 120 0.01 99
IV.GAVE.EHZ. 2021-12-30T05:27:50.13 0.1 undecidable manual P 199 18.1707 120 0.11 97
IV.MC2.EHZ. 2021-12-30T05:27:50.59 0.1 undecidable manual P 69 19.4694 118 0.35 93
IV.NRCA.HHZ. 2021-12-30T05:27:49.10 0.1 undecidable manual P 97 12.1767 131 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.7 0.0000524 0.14 AML other m 2021-12-30T05:27:51.57
IV.NRCA.HHE. ML:0.9 0.0000781 0.16 AML other m 2021-12-30T05:27:51.57
IV.GAVE.EHN. ML:0.9 0.00006075 0.54 AML other m 2021-12-30T05:27:53.62
IV.GAVE.EHE. ML:0.9 0.00005989999999999999 0.18 AML other m 2021-12-30T05:27:53.56
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