Earthquake with magnitude of ML 1.9 on date 27-07-2021 and time 16:54:06 (Italy) in region 2 km N Monteleone di Spoleto (PG)

A magnitude ML 1.9 earthquake occured in region: 2 km N Monteleone di Spoleto (PG), on

  • 27-07-2021 14:54:06 (UTC)
  • 27-07-2021 16:54:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.674, 12.953 at 12 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
Monteleone di Spoleto PG 3 599 599
Poggiodomo PG 5 117 716
Cascia PG 7 3217 3933
Scheggino PG 11 461 4394
Sant'Anatolia di Narco PG 12 564 4958
Leonessa RI 13 2435 7393
Vallo di Nera PG 13 364 7757
Polino TR 13 233 7990
Ferentillo TR 15 1913 9903
Cerreto di Spoleto PG 17 1075 10978
Montefranco TR 17 1276 12254
Norcia PG 18 4957 17211
Arrone TR 18 2763 19974
Cittareale RI 18 482 20456
Spoleto PG 19 38218 58674
Morro Reatino RI 19 373 59047
Rivodutri RI 19 1253 60300
Poggio Bustone RI 20 2055 62355

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Terni (111501 inhabitants)
37 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
75 Km E of Viterbo (67173 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
95 Km NE of Roma (2864731 inhabitants)
100 Km W of Montesilvano (53738 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 1.9 2021-07-27
14:54:06
42.6743 12.953 12 2021-07-27
15:02:49
Sala Sismica INGV-Roma 93271541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-27 14:54:06 ± 0.06
Latitude 42.6743 ± 0.0045
Longitude 12.9530 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93271541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 459
Semi-minor axis of confidence ellipse (meter) 266
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48563
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 93271541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-27 15:02:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.LSD.HHZ. 2021-07-27T14:55:34.61 3.0 undecidable manual Sn 1.71 0
IV.CAGR.HHZ. 2021-07-27T14:55:17.21 3.0 undecidable manual Pg 12.19 0
IV.MONC.HHZ. 2021-07-27T14:55:14.48 3.0 undecidable manual Sn -1.79 0
IV.ZONE.HHZ. 2021-07-27T14:55:11.07 3.0 undecidable manual Sg 8.22 0
IV.CAPR.HNZ. 2021-07-27T14:55:09.14 3.0 undecidable manual Sg 7.46 0
ST.CARE.EHZ. 2021-07-27T14:55:05.43 3.0 undecidable manual Sn -8.92 0
IV.GIZZ.HHZ. 2021-07-27T14:55:05.61 3.0 negative manual Pg 8.65 0
IV.TRIV.HHZ. 2021-07-27T14:54:48.05 3.0 undecidable manual Sn -0.33 0
IV.MONC.HHZ. 2021-07-27T14:54:31.92 3.0 negative manual Pn -1 0
IV.CTI.HHZ. 2021-07-27T14:54:20.10 3.0 undecidable manual Pn -5.03 0
GU.RNCA.HHZ. 2021-07-27T14:54:19.12 3.0 negative manual Pn -0.93 0
IV.OFFI.HHZ. 2021-07-27T14:54:17.68 3.0 undecidable manual S -4.55 0
IV.MF5.EHZ. 2021-07-27T14:54:17.10 0.3 undecidable manual P 50 0.4856 92 0.79 57
IV.MML1.EHN. 2021-07-27T14:54:15.49 0.3 undecidable manual P 2 0.4389 92 -0.02 70
IV.ASSB.HHE. 2021-07-27T14:54:15.21 0.3 undecidable manual P 330 0.4263 92 -0.09 70
IV.FIAM.HNN. 2021-07-27T14:54:15.02 0.6 undecidable manual P 163 0.4236 92 -0.23 45
IV.CSP1.EHE. 2021-07-27T14:54:15.83 0.3 undecidable manual P 24 0.456 92 0.03 71
IV.NRCA.HHZ. 2021-07-27T14:54:14.55 0.1 undecidable manual S 37 0.1979 98 -0.38 91
IV.MOMA.HHN. 2021-07-27T14:54:13.46 0.3 undecidable manual P 295 0.3094 93 0.17 70
IV.FEMA.HNE. 2021-07-27T14:54:13.35 0.3 undecidable manual P 14 0.2959 94 0.28 69
IV.TOLF.HHZ. 2021-07-27T14:54:13.36 3.0 undecidable manual S -2.98 0
IV.ARRO.EHZ. 2021-07-27T14:54:13.98 0.3 undecidable manual S 235 0.1673 102 -0.05 75
IV.MC2.EHZ. 2021-07-27T14:54:13.03 0.3 undecidable manual P 36 0.2932 94 0.01 73
IV.CESI.HHN. 2021-07-27T14:54:13.69 0.3 undecidable manual P 354 0.3318 93 0.01 72
IT.MTCL.HGE. 2021-07-27T14:54:13.43 0.3 undecidable manual P 6 0.3211 93 -0.07 71
IV.SMA1.EHZ. 2021-07-27T14:54:12.97 0.3 undecidable manual P 99 0.2842 94 0.1 72
IV.RM33.EHZ. 2021-07-27T14:54:12.34 0.3 undecidable manual P 131 0.2536 95 0 73
IV.CESX.HHE. 2021-07-27T14:54:12.60 0.3 undecidable manual P 256 0.277 94 -0.14 72
IV.T1299.HNE. 2021-07-27T14:54:12.24 0.3 undecidable manual P 99 0.2455 95 0.04 74
IV.NRCA.HHZ. 2021-07-27T14:54:11.27 0.3 undecidable manual P 37 0.1979 98 -0.13 72
IV.LNSS.HHZ. 2021-07-27T14:54:11.91 0.3 undecidable manual S 138 0.0962 125 -0.17 73
IV.GAVE.HNZ. 2021-07-27T14:54:10.87 0.1 undecidable manual S 292 0.0468 151 -0.23 98
IV.ARRO.EHZ. 2021-07-27T14:54:10.97 0.1 undecidable manual P 235 0.1673 102 0.09 98
IV.GAVE.HNZ. 2021-07-27T14:54:09.29 0.1 undecidable manual P 292 0.0468 151 0.1 100
IV.LNSS.HHZ. 2021-07-27T14:54:09.85 0.1 undecidable manual P 138 0.0962 125 0.09 99
IV.PLMA.HHZ. 2021-07-27T14:54:07.63 3.0 undecidable manual Pn -1.81 0
IV.FDMO.HHZ. 2021-07-27T14:54:06.59 3.0 undecidable manual S -2.17 0
IV.CRTC.HHZ. 2021-07-27T14:53:55.07 3.0 positive manual P -1.71 0
IT.FIE.HGZ. 2021-07-27T14:53:51.65 3.0 negative manual P -3.32 0
IV.ATFO.HHZ. 2021-07-27T14:53:47.26 3.0 undecidable manual P -1.39 0
IV.MURB.HNZ. 2021-07-27T14:53:46.01 3.0 undecidable manual P -1.04 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.HNN. ML:2.1 0.0016762095 0.2496 AML other m 2021-07-27T14:54:11.08
IV.GAVE.EHN. ML:2.4 0.0036836193 0.0832 AML other m 2021-07-27T14:54:11.08
IV.GAVE.HNE. ML:2.4 0.0037802525 0.1792 AML other m 2021-07-27T14:54:11.24
IV.GAVE.EHE. ML:2.4 0.0035386675 0.1792 AML other m 2021-07-27T14:54:11.25
IV.LNSS.HHN. ML:2 0.0011708695 0.1792 AML other m 2021-07-27T14:54:12.44
IV.LNSS.HHE. ML:2.2 0.00178 0.12 AML other m 2021-07-27T14:54:12.29
IV.NRCA.HNN. ML:2 0.0006828913 0.1408 AML other m 2021-07-27T14:54:15.68
IV.NRCA.HNE. ML:2.2 0.0010651646 0.1792 AML other m 2021-07-27T14:54:15.02
IV.NRCA.HHE. ML:2.2 0.00114572935 0.1024 AML other m 2021-07-27T14:54:14.88
IV.ARRO.EHE. ML:1.5 0.0002291089 0.1408 AML other m 2021-07-27T14:54:15.69
IV.NRCA.HHN. ML:2.1 0.0007922483 0.1344 AML other m 2021-07-27T14:54:15.68
IV.ARRO.EHN. ML:1.5 0.0002565316 0.2048 AML other m 2021-07-27T14:54:15.95
IV.RM33.EHE. ML:1.6 0.000214 0.14 AML other m 2021-07-27T14:54:17.50
IV.SMA1.EHE. ML:1.9 0.0003245 0.22 AML other m 2021-07-27T14:54:18.28
IV.RM33.EHN. ML:1.6 0.00020048965 0.1344 AML other m 2021-07-27T14:54:18.26
IV.SMA1.EHN. ML:1.7 0.00024 0.22 AML other m 2021-07-27T14:54:19.19
IV.LNSS.HNE. ML:2.2 0.00156802305 0.1216 AML other m 2021-07-27T14:54:12.29
IV.LNSS.HNN. ML:2 0.0011932805 0.1792 AML other m 2021-07-27T14:54:12.44
IV.RM33.HNE. ML:1.6 0.0002079832 0.128 AML other m 2021-07-27T14:54:17.49
IV.RM33.HNN. ML:1.6 0.00019286075 0.1472 AML other m 2021-07-27T14:54:18.26
IV.MF5.EHE. ML:1.4 6.5799695E-5 0.3776 AML other m 2021-07-27T14:54:25.57
IV.MF5.EHN. ML:1.3 5.134804E-5 0.224 AML other m 2021-07-27T14:54:25.86
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