Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 25-10-2021 and time 06:14:26 (Italy) in region 3 km NW Cerreto di Spoleto (PG)

A magnitude ML 1.8 earthquake occured in region: 3 km NW Cerreto di Spoleto (PG), on

  • 25-10-2021 04:14:26 (UTC)
  • 25-10-2021 06:14:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8340, 12.8880 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 3 1075 1075
Sellano PG 7 1079 2154
Vallo di Nera PG 7 364 2518
Campello sul Clitunno PG 9 2442 4960
Sant'Anatolia di Narco PG 12 564 5524
Trevi PG 12 8469 13993
Preci PG 13 724 14717
Poggiodomo PG 14 117 14834
Scheggino PG 14 461 15295
Spoleto PG 16 38218 53513
Cascia PG 16 3217 56730
Norcia PG 17 4957 61687
Castel Ritaldi PG 18 3278 64965
Visso MC 20 1107 66072

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Foligno (57155 inhabitants)
36 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)
79 Km NE of Viterbo (67173 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
97 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 1.8 2021-10-25
04:14:26		 42.8342 12.8878 10 2022-03-30
13:04:14		 Bollettino Sismico Italiano INGV 97164801
Reviewed
Rev100 		ML 1.8 2021-10-25
04:14:26		 42.8357 12.8893 11 2021-10-25
04:22:57		 Sala Sismica INGV-Roma 96970791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 04:14:26 ± 0.04
Latitude 42.8342 ± 0.0018
Longitude 12.8878 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97164801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 187
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 301
Circular confidence region, given by single value of horizontal uncertainty (meter) 190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 54
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60704
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 97164801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-02 10:58:57

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 96970791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 04:22:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRSN.HNZ. 2021-10-25T04:15:16.91 3.0 undecidable manual Sg 0.88 0
IV.SRES.HHZ. 2021-10-25T04:14:49.59 3.0 undecidable manual S -1.14 0
IV.FOSV.EHZ. 2021-10-25T04:14:44.02 0.6 undecidable manual S 349 52.1034 50 0.56 41
IV.SNTG.HHZ. 2021-10-25T04:14:42.29 0.6 undecidable manual S 5 46.9197 50 0.23 45
IV.RM33.EHZ. 2021-10-25T04:14:41.55 0.3 undecidable manual S 143 44.8218 50 0.04 71
IV.GUMA.HHZ. 2021-10-25T04:14:41.77 0.6 undecidable manual S 55 44.3223 50 0.4 44
IV.ATCC.EHZ. 2021-10-25T04:14:41.55 0.3 undecidable manual S 333 43.8228 50 0.31 67
IV.MGAB.HHZ. 2021-10-25T04:14:41.12 3.0 positive manual P 2.3 0
IV.SMA1.EHZ. 2021-10-25T04:14:41.52 0.6 undecidable manual S 122 42.9237 50 0.53 43
IV.PIEI.HHZ. 2021-10-25T04:14:41.46 3.0 negative manual P -0.5 0
IV.MNTT.EHZ. 2021-10-25T04:14:39.39 0.6 undecidable manual P 66 62.7927 50 1.28 29
IV.MMO1.EHZ. 2021-10-25T04:14:39.16 0.3 undecidable manual S 78 36.4413 50 -0.1 71
IV.ARVD.HHZ. 2021-10-25T04:14:39.74 3.0 undecidable manual P -0.67 0
IV.CSP1.EHZ. 2021-10-25T04:14:39.74 0.6 undecidable manual S 42 38.4282 50 -0.07 47
IV.CING.HHZ. 2021-10-25T04:14:38.46 0.1 undecidable manual P 22 64.9905 50 0 92
IV.CESX.HHZ. 2021-10-25T04:14:38.68 0.3 undecidable manual S 225 35.0427 50 -0.22 69
IV.SSFR.HHZ. 2021-10-25T04:14:38.84 0.3 undecidable manual P 353 67.377 50 0.03 68
IV.TERO.HHZ. 2021-10-25T04:14:38.31 0.6 undecidable manual P 112 62.8926 50 0.18 44
IV.MML1.EHZ. 2021-10-25T04:14:37.92 0.6 undecidable manual S 12 31.746 50 -0.09 48
IV.ASSB.HHZ. 2021-10-25T04:14:37.34 0.1 undecidable manual S 321 29.6481 50 -0.13 95
IV.EL6.EHZ. 2021-10-25T04:14:37.23 0.3 undecidable manual P 17 57.5979 50 -0.08 69
IV.ARRO.EHZ. 2021-10-25T04:14:37.60 0.3 undecidable manual S 199 29.9478 50 0.05 73
IV.FDMO.HHZ. 2021-10-25T04:14:36.71 0.3 undecidable manual S 36 27.6501 50 -0.22 70
IV.LNSS.HHZ. 2021-10-25T04:14:36.97 0.3 undecidable manual S 154 28.5492 50 -0.19 71
IV.FOSV.EHZ. 2021-10-25T04:14:36.49 0.1 undecidable manual P 349 52.1034 50 0.02 94
IT.GNU.HGZ. 2021-10-25T04:14:36.60 0.3 undecidable manual S 263 26.0517 50 0.1 72
IV.MC2.EHZ. 2021-10-25T04:14:36.45 0.1 undecidable manual S 71 25.9518 50 -0.02 98
IV.MF5.EHZ. 2021-10-25T04:14:36.08 0.1 undecidable manual P 70 49.5171 50 0.02 94
IV.MOMA.HHZ. 2021-10-25T04:14:36.58 0.3 undecidable manual S 263 26.0517 50 0.07 73
IV.SNTG.HHZ. 2021-10-25T04:14:35.43 0.1 undecidable manual P 5 46.9197 50 -0.23 90
IT.FOPC.HGZ. 2021-10-25T04:14:35.15 0.1 undecidable manual S 315 21.2676 116 0.03 99
IV.RM33.EHZ. 2021-10-25T04:14:35.11 0.3 undecidable manual P 143 44.8218 50 -0.24 68
IV.GUMA.HHZ. 2021-10-25T04:14:35.49 0.1 undecidable manual P 55 44.3223 50 0.23 91
IV.ATCC.EHZ. 2021-10-25T04:14:35.14 0.1 undecidable manual P 333 43.8228 50 -0.05 94
IV.SMA1.EHZ. 2021-10-25T04:14:35.32 0.1 undecidable manual P 122 42.9237 50 0.28 90
IT.MTCL.HGZ. 2021-10-25T04:14:34.27 0.1 undecidable manual S 27 19.869 117 -0.43 91
IV.CSP1.EHZ. 2021-10-25T04:14:34.20 0.1 undecidable manual P 42 38.4282 50 -0.16 93
IV.T1299.HNN. 2021-10-25T04:14:34.21 0.6 undecidable manual P 124 39.0276 50 -0.24 46
IV.NRCA.HHZ. 2021-10-25T04:14:34.28 0.1 undecidable manual S 90 18.3705 119 0.03 99
IV.FEMA.HNZ. 2021-10-25T04:14:34.57 0.3 undecidable manual S 43 19.3695 118 0.04 74
IV.CESI.HNZ. 2021-10-25T04:14:34.39 0.1 undecidable manual S 4 18.9699 119 -0.03 99
IV.PF6.EHN. 2021-10-25T04:14:34.78 0.3 undecidable manual P 36 41.8248 50 -0.11 70
IV.ARRO.EHZ. 2021-10-25T04:14:33.00 0.1 undecidable manual P 199 29.9478 50 -0.06 97
IV.GAVE.HNZ. 2021-10-25T04:14:33.45 0.1 undecidable manual S 178 15.7731 123 -0.01 100
IV.MML1.EHZ. 2021-10-25T04:14:33.27 0.1 undecidable manual P 12 31.746 50 -0.06 96
IV.CESX.HHZ. 2021-10-25T04:14:33.58 0.1 undecidable manual P 225 35.0427 50 -0.26 92
IV.MMO1.EHZ. 2021-10-25T04:14:33.97 0.1 undecidable manual P 78 36.4413 50 -0.08 95
IV.MOMA.HHZ. 2021-10-25T04:14:32.51 0.1 undecidable manual P 263 26.0517 50 0.05 97
IV.FDMO.HHZ. 2021-10-25T04:14:32.60 0.1 undecidable manual P 36 27.6501 50 -0.1 96
IV.LNSS.HHZ. 2021-10-25T04:14:32.68 0.1 undecidable manual P 154 28.5492 50 -0.15 95
IT.GNU.HGZ. 2021-10-25T04:14:32.56 0.1 undecidable manual P 263 26.0517 50 0.11 96
IV.MC2.EHZ. 2021-10-25T04:14:32.29 0.1 undecidable manual P 71 25.9518 50 -0.14 96
IV.ASSB.HHZ. 2021-10-25T04:14:32.86 0.1 undecidable manual P 321 29.6481 50 -0.15 95
IV.FEMA.HNZ. 2021-10-25T04:14:31.47 0.1 undecidable manual P 43 19.3695 118 0.16 96
IV.CESI.HNZ. 2021-10-25T04:14:31.33 0.1 undecidable manual P 4 18.9699 119 0.08 98
IT.MTCL.HGZ. 2021-10-25T04:14:31.45 0.1 undecidable manual P 27 19.869 117 0.04 99
IT.FOPC.HGZ. 2021-10-25T04:14:31.80 0.1 undecidable manual P 315 21.2676 116 0.14 96
IV.NRCA.HHZ. 2021-10-25T04:14:31.17 0.1 undecidable manual P 90 18.3705 119 0.02 99
IV.GAVE.HNZ. 2021-10-25T04:14:30.88 0.1 undecidable manual P 178 15.7731 123 0.19 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNN. ML:2.1 0.0010459999999999998 0.16 AML other m 2021-10-25T04:14:34.66
IV.CESI.HHN. ML:2.2 0.0011145 0.16 AML other m 2021-10-25T04:14:34.66
IV.CESI.HHE. ML:1.8 0.0004305 1.32 AML other m 2021-10-25T04:14:35.82
IV.NRCA.HHE. ML:2.0 0.0008200000000000001 0.14 AML other m 2021-10-25T04:14:35.33
IV.CESI.HNE. ML:1.8 0.000428 0.48 AML other m 2021-10-25T04:14:35.59
IV.NRCA.HHN. ML:1.8 0.0005340000000000001 0.1 AML other m 2021-10-25T04:14:36.55
IV.MOMA.HHE. ML:1.8 0.000364 1.18 AML other m 2021-10-25T04:14:37.11
IV.FDMO.HHE. ML:1.9 0.000393 0.78 AML other m 2021-10-25T04:14:37.48
IV.ASSB.HHN. ML:1.9 0.000375 0.36 AML other m 2021-10-25T04:14:37.61
IV.MOMA.HNE. ML:1.8 0.0003695 1.26 AML other m 2021-10-25T04:14:37.63
IV.FDMO.HHN. ML:1.8 0.00037 1.02 AML other m 2021-10-25T04:14:37.65
IV.MOMA.HHN. ML:1.8 0.000341 0.16 AML other m 2021-10-25T04:14:38.09
IV.MOMA.HNN. ML:1.8 0.0003525 0.9 AML other m 2021-10-25T04:14:38.09
IV.MML1.EHN. ML:1.7 0.00022250000000000001 0.18 AML other m 2021-10-25T04:14:38.24
IV.ASSB.HHE. ML:1.8 0.00028700000000000004 1.02 AML other m 2021-10-25T04:14:38.32
IV.ARRO.EHN. ML:1.5 0.00016 0.18 AML other m 2021-10-25T04:14:38.69
IV.ARRO.EHE. ML:1.6 0.00021349999999999999 0.3 AML other m 2021-10-25T04:14:38.69
IV.MML1.EHE. ML:1.7 0.00023449999999999998 1.82 AML other m 2021-10-25T04:14:38.00
IV.CESX.HHN. ML:1.8 0.00028000000000000003 1.06 AML other m 2021-10-25T04:14:39.80
IV.CESX.HHE. ML:1.7 0.000207 0.4 AML other m 2021-10-25T04:14:41.66
IV.RM33.EHN. ML:1.6 0.000131 1.78 AML other m 2021-10-25T04:14:41.97
IV.ATCC.EHE. ML:1.9 0.000243 0.12 AML other m 2021-10-25T04:14:42.74
IV.RM33.EHE. ML:1.7 0.00014050000000000003 1.14 AML other m 2021-10-25T04:14:42.25
IV.ATCC.EHN. ML:1.8 0.00019350000000000001 0.22 AML other m 2021-10-25T04:14:42.86
IV.GUMA.HHE. ML:2.1 0.000389 0.6 AML other m 2021-10-25T04:14:42.95
IV.SMA1.EHN. ML:1.7 0.00014450000000000002 1 AML other m 2021-10-25T04:14:43.08
IV.SMA1.EHE. ML:1.6 0.00014000000000000001 0.24 AML other m 2021-10-25T04:14:43.53
IV.GUMA.HHN. ML:1.9 0.000263 1.48 AML other m 2021-10-25T04:14:45.13
IV.EL6.EHE. ML:1.8 0.0001285 1.24 AML other m 2021-10-25T04:14:47.18
IV.EL6.EHN. ML:1.7 0.00011655 0.42 AML other m 2021-10-25T04:14:48.23
IV.SSFR.HHN. ML:1.6 0.00007675 0.22 AML other m 2021-10-25T04:14:49.51
IV.SSFR.HHE. ML:1.6 0.00007185 1.22 AML other m 2021-10-25T04:14:52.22
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