Earthquake with magnitude of ML 1.1 on date 27-01-2021 and time 09:43:29 (Italy) in region 3 km N Foligno (PG)

A magnitude ML 1.1 earthquake occured in region: 3 km N Foligno (PG), on

  • 27-01-2021 08:43:29 (UTC)
  • 27-01-2021 09:43:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.98, 12.7 at 9 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
Foligno PG 3 57155 57155
Spello PG 3 8645 65800
Bevagna PG 9 5081 70881
Cannara PG 9 4305 75186
Montefalco PG 10 5679 80865
Valtopina PG 10 1398 82263
Trevi PG 12 8469 90732
Assisi PG 12 28299 119031
Gualdo Cattaneo PG 14 6155 125186
Bastia Umbra PG 16 21874 147060
Nocera Umbra PG 17 5839 152899
Castel Ritaldi PG 17 3278 156177
Bettona PG 18 4367 160544
Giano dell'Umbria PG 19 3846 164390
Campello sul Clitunno PG 19 2442 166832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km N of Foligno (57155 inhabitants)
29 Km SE of Perugia (166134 inhabitants)
47 Km N of Terni (111501 inhabitants)
79 Km NE of Viterbo (67173 inhabitants)
86 Km SE of Arezzo (99543 inhabitants)
90 Km W of Teramo (54892 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
100 Km S of Fano (60888 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2021-01-27
08:43:29
42.98 12.7 9 2021-01-27
08:55:25
Sala Sismica INGV-Roma 86627461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-27 08:43:29 ± 0.05
Latitude 42.98 ± 0.00
Longitude 12.70 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86627461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 317
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32106
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 86627461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-27 08:55:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2021-01-27T08:43:55.41 3.0 undecidable manual S -0.02 0
IV.CRTC.HHZ. 2021-01-27T08:43:43.67 3.0 negative manual P 0.15 0
IV.FDMO.HHZ. 2021-01-27T08:43:41.22 0.6 undecidable manual S 78 0.2905 50 -0.03 49
IV.MML1.EHE. 2021-01-27T08:43:39.60 0.3 undecidable manual S 56 0.241 109 0 74
IV.MOMA.HHZ. 2021-01-27T08:43:38.24 0.6 undecidable manual S 208 0.1979 113 0.2 48
IV.MURB.HHZ. 2021-01-27T08:43:36.79 0.6 undecidable manual P 336 0.3112 50 0.05 48
IV.CESI.HHZ. 2021-01-27T08:43:36.38 0.6 undecidable manual S 80 0.1538 118 -0.12 49
IV.FDMO.HHZ. 2021-01-27T08:43:36.38 0.6 undecidable manual P 78 0.2905 50 -0.01 49
IV.GAVE.EHE. 2021-01-27T08:43:36.93 0.6 undecidable manual P 153 0.3211 50 0.03 48
IV.MML1.EHE. 2021-01-27T08:43:35.43 0.3 undecidable manual P 56 0.241 109 -0.01 74
IV.ATCC.EHZ. 2021-01-27T08:43:34.71 0.6 undecidable manual P 349 0.2104 112 -0.09 49
IV.MOMA.HHZ. 2021-01-27T08:43:34.27 0.3 undecidable manual P 208 0.1979 113 -0.27 71
IV.CESI.HHZ. 2021-01-27T08:43:33.91 0.6 undecidable manual P 80 0.1538 118 0.26 48
IV.ASSB.HHZ. 2021-01-27T08:43:33.86 0.6 undecidable manual S 336 0.0701 140 -0.09 50
IV.ASSB.HHZ. 2021-01-27T08:43:32.28 0.1 positive manual P 336 0.0701 140 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.6 0.000642 0.18 AML other m 2021-01-27T08:43:33.98
IV.ASSB.HHE. ML:1.5 0.0004425 0.18 AML other m 2021-01-27T08:43:33.98
IV.CESI.HHE. ML:0.7 4.191094E-5 0.2176 AML other m 2021-01-27T08:43:37.31
IV.CESI.HHN. ML:1.1 0.000108603825 0.2368 AML other m 2021-01-27T08:43:37.39
IV.CESI.HNE. ML:1.1 0.000115670405 0.7104 AML other m 2021-01-27T08:43:40.66
IV.CESI.HNN. ML:1.3 0.00016172595 0.4864 AML other m 2021-01-27T08:43:37.68
IV.MOMA.HHE. ML:0.8 4.420763E-5 0.1216 AML other m 2021-01-27T08:43:39.29
IV.MOMA.HHN. ML:0.6 2.5464015E-5 0.224 AML other m 2021-01-27T08:43:38.02
IV.MOMA.HNE. ML:1.3 0.0001277892 0.6272 AML other m 2021-01-27T08:43:35.47
IV.MOMA.HNN. ML:1.5 0.000197728885 0.3712 AML other m 2021-01-27T08:43:39.94
IV.FDMO.HHE. ML:0.8 2.2716975E-5 0.3008 AML other m 2021-01-27T08:43:41.71
IV.FDMO.HHN. ML:0.6 1.98373825E-5 0.3392 AML other m 2021-01-27T08:43:41.72
IV.CRTC.HNE. ML:3.8 0.0078727025 0.6016 AML other m 2021-01-27T08:44:02.58
IV.CRTC.HNN. ML:3.8 0.0082042015 1.056 AML other m 2021-01-27T08:44:06.97
IV.CRTC.HHN. ML:1.8 8.160586E-5 0.6016 AML other m 2021-01-27T08:44:19.07
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download