Earthquake with magnitude of ML 1.1 on date 27-01-2021 and time 01:11:41 (UTC) in region 5 km E Vallo di Nera (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km E Vallo di Nera (PG), on

  • 27-01-2021 01:11:41 (UTC)
  • 27-01-2021 02:11:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7700, 12.9190 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Vallo di Nera PG 5 364 364
Cerreto di Spoleto PG 6 1075 1439
Poggiodomo PG 7 117 1556
Sant'Anatolia di Narco PG 8 564 2120
Scheggino PG 10 461 2581
Cascia PG 10 3217 5798
Campello sul Clitunno PG 13 2442 8240
Monteleone di Spoleto PG 13 599 8839
Sellano PG 13 1079 9918
Norcia PG 15 4957 14875
Spoleto PG 15 38218 53093
Preci PG 16 724 53817
Trevi PG 18 8469 62286
Ferentillo TR 20 1913 64199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SE of Foligno (57155 inhabitants)
32 Km NE of Terni (111501 inhabitants)
57 Km SE of Perugia (166134 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
65 Km W of Teramo (54892 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
90 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
Bulletin
Rev1000
ML 1.1 2021-01-27
01:11:41
42.7697 12.919 11 2021-07-12
16:54:56
Bollettino Sismico Italiano INGV 86757691
Reviewed
Rev100
ML 1.0 2021-01-27
01:11:41
42.7702 12.9215 11 2021-01-27
01:22:37
Sala Sismica INGV-Roma 86619381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-27 01:11:41 ± 0.04
Latitude 42.7697 ± 0.0018
Longitude 12.9190 ± 0.0049
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86757691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 400
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.29408
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 86757691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-01 08:33:48

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 86619381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-27 01:22:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-01-27T01:11:52.40 0.3 undecidable manual S 25 32.6451 90 0.05 72
IV.CESI.HHZ. 2021-01-27T01:11:50.66 0.1 undecidable manual S 357 26.1516 90 0.04 97
IV.ARRO.EHZ. 2021-01-27T01:11:50.05 0.6 undecidable manual S 211 24.5532 90 -0.15 48
IV.LNSS.HHZ. 2021-01-27T01:11:49.26 0.3 undecidable manual S 152 20.9679 90 0.01 74
IV.NRCA.HHZ. 2021-01-27T01:11:48.24 0.1 undecidable manual S 66 17.3715 90 -0.05 98
IV.FDMO.HHZ. 2021-01-27T01:11:47.58 0.1 undecidable manual P 25 32.6451 90 -0.06 96
IV.ARRO.EHZ. 2021-01-27T01:11:46.29 0.1 undecidable manual P 211 24.5532 90 -0.1 97
IV.LNSS.HHZ. 2021-01-27T01:11:46.05 0.1 undecidable manual P 152 20.9679 90 0.21 95
IV.GAVE.EHZ. 2021-01-27T01:11:46.02 0.1 undecidable manual S 193 8.7801 126 -0.09 100
IV.CESI.HHZ. 2021-01-27T01:11:46.60 0.1 undecidable manual P 357 26.1516 90 -0.04 98
IV.NRCA.HHZ. 2021-01-27T01:11:45.30 0.1 negative manual P 66 17.3715 90 0.01 100
IV.GAVE.EHZ. 2021-01-27T01:11:44.14 0.1 undecidable manual P 193 8.7801 126 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.3 0.00025 0.14 AML other m 2021-01-27T01:11:46.61
IV.GAVE.EHE. ML:1.2 0.0001895 0.9 AML other m 2021-01-27T01:11:46.27
IV.GAVE.HNN. ML:1.0 0.00013681168500000003 0.6096 AML other m 2021-01-27T01:11:46.61
IV.NRCA.HHE. ML:0.8 0.00005574999999999999 1.04 AML other m 2021-01-27T01:11:48.12
IV.NRCA.HHN. ML:0.9 0.00006634999999999999 0.12 AML other m 2021-01-27T01:11:48.64
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