Earthquake with magnitude of ML 1.2 on date 27-07-2021 and time 02:27:57 (Italy) in region 5 km SE Foligno (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km SE Foligno (PG), on

  • 27-07-2021 00:27:57 (UTC)
  • 27-07-2021 02:27:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.925, 12.746 at 10 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 5 57155 57155
Trevi PG 5 8469 65624
Montefalco PG 8 5679 71303
Spello PG 10 8645 79948
Bevagna PG 11 5081 85029
Campello sul Clitunno PG 12 2442 87471
Castel Ritaldi PG 13 3278 90749
Valtopina PG 15 1398 92147
Sellano PG 15 1079 93226
Cannara PG 15 4305 97531
Gualdo Cattaneo PG 16 6155 103686
Giano dell'Umbria PG 17 3846 107532
Cerreto di Spoleto PG 18 1075 108607
Assisi PG 19 28299 136906
Vallo di Nera PG 20 364 137270

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km SE of Foligno (57155 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
41 Km N of Terni (111501 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
84 Km W of Teramo (54892 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
99 Km SW of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.2 2021-07-27
00:27:57
42.9252 12.7458 10 2021-07-27
00:35:59
Sala Sismica INGV-Roma 93255971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-27 00:27:57 ± 0.05
Latitude 42.9252 ± 0.0027
Longitude 12.7458 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93255971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 332
Semi-minor axis of confidence ellipse (meter) 329
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37412
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 93255971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-27 00:35:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-07-27T00:28:11.93 0.3 undecidable manual S 63 0.3741 50 0.44 67
IV.MC2.EHZ. 2021-07-27T00:28:10.38 0.6 undecidable manual S 92 0.3247 50 0.37 46
IV.ATCC.EHZ. 2021-07-27T00:28:08.68 0.3 undecidable manual S 343 0.2707 50 0.25 71
IV.NRCA.HHZ. 2021-07-27T00:28:08.76 0.3 undecidable manual S 109 0.2851 50 -0.08 73
IV.GAVE.HNE. 2021-07-27T00:28:07.96 0.3 undecidable manual S 155 0.2572 50 -0.05 74
IV.MMUR.HNZ. 2021-07-27T00:28:07.42 3.0 positive manual P -0.6 0
IV.MML1.EHZ. 2021-07-27T00:28:07.57 0.6 undecidable manual S 41 0.25 50 -0.24 47
IV.CESX.HHZ. 2021-07-27T00:28:05.01 3.0 positive manual P 0.02 0
IV.CSP1.EHZ. 2021-07-27T00:28:05.55 0.3 undecidable manual P 63 0.3741 50 -0.14 71
IV.MOMA.HHZ. 2021-07-27T00:28:05.63 0.6 undecidable manual S 227 0.1772 118 0.19 49
IV.FOSV.EHZ. 2021-07-27T00:28:05.43 3.0 negative manual P 0.62 0
IV.MC2.EHZ. 2021-07-27T00:28:04.78 0.3 undecidable manual P 92 0.3247 50 -0.05 73
IV.CESI.HHZ. 2021-07-27T00:28:04.27 0.3 undecidable manual S 55 0.1412 123 0.04 76
IV.NRCA.HHZ. 2021-07-27T00:28:04.00 0.1 negative manual P 109 0.2851 50 -0.15 96
IV.ASSB.HHZ. 2021-07-27T00:28:03.80 0.3 undecidable manual S 332 0.1331 125 -0.2 73
IV.MML1.EHZ. 2021-07-27T00:28:03.36 0.1 undecidable manual P 41 0.25 50 -0.2 96
IV.GAVE.HNE. 2021-07-27T00:28:03.79 0.6 undecidable manual P 155 0.2572 50 0.11 49
IV.ATCC.EHZ. 2021-07-27T00:28:03.85 0.3 undecidable manual P 343 0.2707 50 -0.07 74
IV.MOMA.HHZ. 2021-07-27T00:28:02.14 0.3 undecidable manual P 227 0.1772 118 -0.05 75
IT.FOPC.HGE. 2021-07-27T00:28:02.07 0.3 undecidable manual S 325 0.054 149 0.19 75
IT.MTCL.HGZ. 2021-07-27T00:28:02.45 0.3 undecidable manual P 70 0.1979 115 -0.15 73
IV.ASSB.HHZ. 2021-07-27T00:28:01.26 0.1 positive manual P 332 0.1331 125 -0.1 100
IV.CESI.HHZ. 2021-07-27T00:28:01.59 0.1 negative manual P 55 0.1412 123 0.09 100
IT.FOPC.HGE. 2021-07-27T00:28:00.24 0.3 undecidable manual P 325 0.054 149 0.11 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.2 0.00016030135 0.16 AML other m 2021-07-27T00:28:03.83
IV.ASSB.HHE. ML:1.2 0.0001467539 0.1 AML other m 2021-07-27T00:28:04.09
IV.CESI.HHE. ML:1 8.4120465E-5 0.1796 AML other m 2021-07-27T00:28:04.29
IV.CESI.HHN. ML:0.9 8.2042845E-5 0.2 AML other m 2021-07-27T00:28:06.41
IV.MOMA.HHE. ML:1.3 0.000161 0.2 AML other m 2021-07-27T00:28:06.24
IV.MOMA.HHN. ML:1.3 0.0001475 0.2 AML other m 2021-07-27T00:28:06.52
IV.MML1.EHE. ML:1 5.3448775E-5 0.2 AML other m 2021-07-27T00:28:07.64
IV.MML1.EHN. ML:0.8 3.6046095E-5 0.16 AML other m 2021-07-27T00:28:07.82
IV.NRCA.HHE. ML:1.3 9.185E-5 0.2 AML other m 2021-07-27T00:28:09.11
IV.ATCC.EHN. ML:0.9 3.699013E-5 0.14 AML other m 2021-07-27T00:28:09.44
IV.ATCC.EHE. ML:0.9 4.131806E-5 0.3 AML other m 2021-07-27T00:28:09.96
IV.NRCA.HHN. ML:1.3 8.74033E-5 0.1 AML other m 2021-07-27T00:28:09.39
IV.CESX.HHN. ML:1.1 4.855E-5 1.56 AML other m 2021-07-27T00:28:11.08
IV.CESX.HHE. ML:1 3.7E-5 0.44 AML other m 2021-07-27T00:28:12.51
IV.CESI.HNE. ML:0.9 7.2484631E-5 0.1504 AML other m 2021-07-27T00:28:04.58
IV.CESI.HNN. ML:1.1 0.00011488729 0.25 AML other m 2021-07-27T00:28:05.92
IV.MOMA.HNE. ML:1.3 0.000134805255 0.19 AML other m 2021-07-27T00:28:06.25
IV.MOMA.HNN. ML:1.3 0.0001423527 0.19 AML other m 2021-07-27T00:28:06.43
IV.MML1.HNE. ML:1.3 0.00010064765 0.37 AML other m 2021-07-27T00:28:09.11
IV.NRCA.HNE. ML:1.4 0.00012371815 2.0496 AML other m 2021-07-27T00:28:12.91
IV.NRCA.HNN. ML:1.6 0.00015918545 0.59 AML other m 2021-07-27T00:28:07.43
IV.FOSV.EHE. ML:0.5 1.2082403E-5 0.16 AML other m 2021-07-27T00:28:12.28
IV.FOSV.EHN. ML:0.6 1.2762372E-5 0.26 AML other m 2021-07-27T00:28:14.89
IV.CSP1.EHE. ML:1.2 5.5653165E-5 0.14 AML other m 2021-07-27T00:28:13.52
IV.CSP1.EHN. ML:1.2 5.55765395E-5 0.24 AML other m 2021-07-27T00:28:12.48
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