Earthquake with magnitude of ML 0.5 on date 26-10-2021 and time 04:02:50 (Italy) in region 5 km SE Preci (PG)

A magnitude ML 0.5 earthquake occured in region: 5 km SE Preci (PG), on

  • 26-10-2021 02:02:50 (UTC)
  • 26-10-2021 04:02:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.856, 13.088 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
Preci PG 5 724 724
Norcia PG 7 4957 5681
Castelsantangelo sul Nera MC 7 281 5962
Visso MC 8 1107 7069
Ussita MC 11 444 7513
Sellano PG 14 1079 8592
Cerreto di Spoleto PG 15 1075 9667
Cascia PG 16 3217 12884
Monte Cavallo MC 17 145 13029
Bolognola MC 19 142 13171
Arquata del Tronto AP 19 1178 14349

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
63 Km E of Perugia (166134 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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 0.5 2021-10-26
02:02:50
42.8558 13.0878 9 2021-10-26
02:12:39
Sala Sismica INGV-Roma 96992161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 02:02:50 ± 0.08
Latitude 42.8558 ± 0.0036
Longitude 13.0878 ± 0.0061
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 96992161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 444
Semi-minor axis of confidence ellipse (meter) 352
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
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) 0.44516
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 96992161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 02:12:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-10-26T02:03:05.85 0.6 undecidable manual S 121 0.4452 50 -0.47 44
IV.MF5.EHZ. 2021-10-26T02:03:02.68 0.3 undecidable manual S 64 0.3022 50 0.58 65
IV.SMA1.EHZ. 2021-10-26T02:03:01.54 0.3 undecidable manual S 141 0.2896 50 -0.17 72
IV.LNSS.HHZ. 2021-10-26T02:03:00.28 0.6 undecidable manual S 188 0.2554 107 -0.19 48
IV.ATCC.EHZ. 2021-10-26T02:02:59.80 3.0 undecidable manual P -0.09 0
IV.CSP1.EHZ. 2021-10-26T02:02:59.86 0.6 undecidable manual S 20 0.2509 108 -0.44 46
IV.TERO.HHZ. 2021-10-26T02:02:59.50 0.3 undecidable manual P 121 0.4452 50 0.01 72
IV.CESI.HHZ. 2021-10-26T02:02:58.45 0.6 undecidable manual S 318 0.2005 112 -0.02 50
IV.FDMO.HHZ. 2021-10-26T02:02:57.54 0.6 undecidable manual S 360 0.1808 114 -0.22 48
IV.SMA1.EHZ. 2021-10-26T02:02:57.01 1.0 undecidable manual P 141 0.2896 50 0.17 24
IV.MF5.EHZ. 2021-10-26T02:02:57.12 0.6 negative manual P 64 0.3022 50 0.06 49
IV.MMO1.EHZ. 2021-10-26T02:02:57.52 0.3 undecidable manual S 76 0.1808 114 -0.24 72
IV.LNSS.HHZ. 2021-10-26T02:02:56.16 0.6 undecidable manual P 188 0.2554 107 0.05 49
IV.MC2.EHZ. 2021-10-26T02:02:55.01 0.6 undecidable manual S 53 0.0926 131 0.15 50
IV.CESI.HHZ. 2021-10-26T02:02:55.01 0.1 positive manual P 318 0.2005 112 0.05 100
IV.CSP1.EHZ. 2021-10-26T02:02:55.71 1.0 undecidable manual P 20 0.2509 108 -0.31 23
IV.MMO1.EHZ. 2021-10-26T02:02:54.45 1.0 undecidable manual P 76 0.1808 114 -0.1 25
IV.FDMO.HHZ. 2021-10-26T02:02:54.49 0.1 undecidable manual P 360 0.1808 114 -0.06 100
IV.NRCA.HHZ. 2021-10-26T02:02:53.49 0.6 undecidable manual S 139 0.0297 160 0.06 51
IV.MC2.EHZ. 2021-10-26T02:02:53.14 0.3 undecidable manual P 53 0.0926 131 0.26 73
IV.NRCA.HHZ. 2021-10-26T02:02:52.30 0.1 undecidable manual P 139 0.0297 160 0.25 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:0 0.0007205 0.14 AML other m 2021-10-26T02:02:53.58
IV.NRCA.HHN. ML:0 0.000769 0.14 AML other m 2021-10-26T02:02:53.58
IV.NRCA.HHE. ML:0 0.000448 0.86 AML other m 2021-10-26T02:02:54.59
IV.NRCA.HNE. ML:0 0.000345 0.86 AML other m 2021-10-26T02:02:54.59
IV.FDMO.HHE. ML:0.5 2.43E-5 1.28 AML other m 2021-10-26T02:02:57.05
IV.FDMO.HHN. ML:0.4 2.03E-5 1 AML other m 2021-10-26T02:02:57.79
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