Earthquake with magnitude of ML 0.9 on date 13-11-2021 and time 01:39:44 (UTC) in region 3 km W Cerreto di Spoleto (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km W Cerreto di Spoleto (PG), on

  • 13-11-2021 01:39:44 (UTC)
  • 13-11-2021 02:39:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.824, 12.875 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
Cerreto di Spoleto PG 4 1075 1075
Vallo di Nera PG 6 364 1439
Campello sul Clitunno PG 8 2442 3881
Sellano PG 9 1079 4960
Sant'Anatolia di Narco PG 11 564 5524
Trevi PG 12 8469 13993
Scheggino PG 13 461 14454
Poggiodomo PG 13 117 14571
Spoleto PG 15 38218 52789
Preci PG 15 724 53513
Cascia PG 16 3217 56730
Castel Ritaldi PG 16 3278 60008
Norcia PG 18 4957 64965
Montefalco PG 20 5679 70644

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Foligno (57155 inhabitants)
35 Km NE of Terni (111501 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
70 Km W of Teramo (54892 inhabitants)
77 Km NE of Viterbo (67173 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-11-13
01:39:44
42.8243 12.8748 10 2021-11-13
01:47:30
Sala Sismica INGV-Roma 97427701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-13 01:39:44 ± 0.05
Latitude 42.8243 ± 0.0027
Longitude 12.8748 ± 0.0037
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 97427701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 203
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.59805
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 97427701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-13 01:47:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CING.HHZ. 2021-11-13T01:40:06.05 1.0 undecidable manual S 23 0.598 50 0.83 18
IV.EL6.EHZ. 2021-11-13T01:40:03.82 0.3 undecidable manual S 18 0.5315 50 0.6 61
IV.ATCC.EHZ. 2021-11-13T01:39:59.54 0.6 undecidable manual S 335 0.3993 50 0.22 46
IV.CSP1.EHZ. 2021-11-13T01:39:58.35 0.6 undecidable manual S 42 0.3597 50 0.19 46
IV.ARVD.HHZ. 2021-11-13T01:39:58.20 3.0 undecidable manual P -0.03 0
IV.MMO1.EHZ. 2021-11-13T01:39:57.40 0.3 undecidable manual S 77 0.339 50 -0.15 71
IV.CING.HHZ. 2021-11-13T01:39:56.65 1.0 positive manual P 23 0.598 50 0.07 23
IV.MML1.EHZ. 2021-11-13T01:39:56.17 0.6 undecidable manual S 14 0.2977 50 -0.13 48
IV.CESX.HHZ. 2021-11-13T01:39:56.41 0.3 undecidable manual S 225 0.3022 50 -0.03 73
IV.EL6.EHZ. 2021-11-13T01:39:55.51 0.6 negative manual P 18 0.5315 50 0.08 46
IV.ASSB.HHZ. 2021-11-13T01:39:55.06 0.6 undecidable manual S 324 0.2689 50 -0.41 45
IV.FDMO.HHZ. 2021-11-13T01:39:55.06 0.6 undecidable manual S 36 0.2626 50 -0.22 47
IV.MOMA.HHZ. 2021-11-13T01:39:54.00 0.6 undecidable manual S 265 0.2239 112 -0.09 49
IV.MC2.EHZ. 2021-11-13T01:39:54.59 0.6 undecidable manual S 69 0.2464 50 -0.19 48
IV.LNSS.HHZ. 2021-11-13T01:39:54.94 0.6 undecidable manual S 151 0.2527 50 -0.03 49
IV.ATCC.EHZ. 2021-11-13T01:39:53.11 0.6 negative manual P 335 0.3993 50 -0.07 47
IV.MMO1.EHZ. 2021-11-13T01:39:52.09 0.3 positive manual P 77 0.339 50 -0.06 72
IV.CSP1.EHZ. 2021-11-13T01:39:52.51 0.6 positive manual P 42 0.3597 50 0 48
IV.NRCA.HHZ. 2021-11-13T01:39:52.27 0.6 undecidable manual S 87 0.1754 117 -0.11 49
IV.CESI.HHZ. 2021-11-13T01:39:52.40 0.6 undecidable manual S 7 0.1817 116 -0.19 48
IV.CESX.HHZ. 2021-11-13T01:39:51.60 1.0 undecidable manual P 225 0.3022 50 0.09 24
IV.GAVE.EHZ. 2021-11-13T01:39:51.00 0.6 undecidable manual S 174 0.1331 124 0.04 50
IV.MML1.EHZ. 2021-11-13T01:39:51.35 0.6 positive manual P 14 0.2977 50 -0.08 48
IV.FDMO.HHZ. 2021-11-13T01:39:50.66 0.6 positive manual P 36 0.2626 50 -0.18 47
IV.LNSS.HHZ. 2021-11-13T01:39:50.68 0.6 negative manual P 151 0.2527 50 0.01 49
IV.MOMA.HHZ. 2021-11-13T01:39:50.34 1.0 undecidable manual P 265 0.2239 112 0.19 24
IV.ASSB.HHZ. 2021-11-13T01:39:50.77 0.6 undecidable manual P 324 0.2689 50 -0.18 47
IV.MC2.EHZ. 2021-11-13T01:39:50.60 1.0 negative manual P 69 0.2464 50 0.05 24
IV.NRCA.HHZ. 2021-11-13T01:39:49.18 0.1 positive manual P 87 0.1754 117 0.01 100
IV.CESI.HHZ. 2021-11-13T01:39:49.31 0.1 positive manual P 7 0.1817 116 0.02 100
IV.GAVE.EHZ. 2021-11-13T01:39:48.58 0.3 positive manual P 174 0.1331 124 0.23 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.1 0.000136 0.54 AML other m 2021-11-13T01:39:51.21
IV.GAVE.EHE. ML:1.2 0.000169 0.72 AML other m 2021-11-13T01:39:51.31
IV.NRCA.HHN. ML:1 7.335E-5 0.56 AML other m 2021-11-13T01:39:52.87
IV.CESI.HHN. ML:1.1 9.205E-5 0.3 AML other m 2021-11-13T01:39:52.65
IV.CESI.HHE. ML:1 6.43E-5 0.54 AML other m 2021-11-13T01:39:52.56
IV.NRCA.HHE. ML:1 7.005E-5 0.32 AML other m 2021-11-13T01:39:52.73
IV.MOMA.HHE. ML:0.5 2.2345E-5 1.1 AML other m 2021-11-13T01:39:54.23
IV.MOMA.HHN. ML:0.5 2.045E-5 1.32 AML other m 2021-11-13T01:39:55.19
IV.FDMO.HHN. ML:0.7 2.725E-5 0.34 AML other m 2021-11-13T01:39:55.45
IV.LNSS.HHE. ML:1.1 5.935E-5 0.56 AML other m 2021-11-13T01:39:55.37
IV.FDMO.HHE. ML:0.8 3.395E-5 0.6 AML other m 2021-11-13T01:39:55.81
IV.LNSS.HHN. ML:1.2 8.365E-5 0.82 AML other m 2021-11-13T01:39:56.84
IV.ASSB.HHE. ML:0.7 2.745E-5 0.5 AML other m 2021-11-13T01:39:56.45
IV.MML1.EHN. ML:0.9 3.625E-5 0.74 AML other m 2021-11-13T01:39:56.78
IV.ASSB.HHN. ML:0.7 2.275E-5 1.5 AML other m 2021-11-13T01:39:56.97
IV.MML1.EHE. ML:0.9 3.61E-5 1.36 AML other m 2021-11-13T01:39:57.93
IV.ATCC.EHN. ML:0.8 1.935E-5 0.66 AML other m 2021-11-13T01:40:01.10
IV.ATCC.EHE. ML:0.8 2.075E-5 0.42 AML other m 2021-11-13T01:40:07.66
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