Earthquake with magnitude of ML 1.5 on date 26-10-2021 and time 00:56:04 (Italy) in region 2 km NE Castelsantangelo sul Nera (MC)

A magnitude ML 1.5 earthquake occured in region: 2 km NE Castelsantangelo sul Nera (MC), on

  • 25-10-2021 22:56:04 (UTC)
  • 26-10-2021 00:56:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.911, 13.168 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
Castelsantangelo sul Nera MC 2 281 281
Ussita MC 5 444 725
Visso MC 7 1107 1832
Bolognola MC 11 142 1974
Preci PG 11 724 2698
Montemonaco AP 13 604 3302
Acquacanina MC 13 121 3423
Fiastra MC 14 559 3982
Norcia PG 14 4957 8939
Montefortino FM 15 1178 10117
Fiordimonte MC 16 202 10319
Montegallo AP 16 523 10842
Monte Cavallo MC 16 145 10987
Amandola FM 17 3629 14616
Sarnano MC 18 3264 17880
Pieve Torina MC 18 1458 19338
Pievebovigliana MC 18 866 20204
Arquata del Tronto AP 19 1178 21382
Sellano PG 20 1079 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
65 Km N of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 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 1.5 2021-10-25
22:56:04
42.9108 13.1682 10 2021-10-25
23:03:29
Sala Sismica INGV-Roma 96989791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 22:56:04 ± 0.05
Latitude 42.9108 ± 0.0027
Longitude 13.1682 ± 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 96989791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 362
Semi-minor axis of confidence ellipse (meter) 257
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.60974
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 96989791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 23:03:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.POFI.HHZ. 2021-10-25T22:56:45.38 3.0 undecidable manual S 0.36 0
IV.CING.HHZ. 2021-10-25T22:56:21.46 0.1 undecidable manual S 2 0.4649 50 0.46 85
IV.TERO.HHZ. 2021-10-25T22:56:19.60 0.1 undecidable manual S 132 0.4299 50 -0.37 88
IV.RM33.EHZ. 2021-10-25T22:56:19.19 0.1 undecidable manual S 175 0.4029 50 0.02 95
IV.SNTG.HHZ. 2021-10-25T22:56:18.74 0.1 undecidable manual S 334 0.3822 50 0.2 92
IV.LNSS.HHZ. 2021-10-25T22:56:17.19 0.1 undecidable manual S 197 0.322 50 0.43 89
IV.ARVD.HHZ. 2021-10-25T22:56:16.37 0.6 positive manual P 344 0.6097 50 -0.17 44
IV.MF5.EHZ. 2021-10-25T22:56:14.43 0.1 undecidable manual S 70 0.2266 50 0.49 89
IV.ATCC.EHZ. 2021-10-25T22:56:14.24 0.6 undecidable manual P 306 0.473 50 0.04 47
IV.MML1.EHZ. 2021-10-25T22:56:14.48 0.1 undecidable manual S 325 0.2482 50 -0.1 96
IV.GUMA.HHZ. 2021-10-25T22:56:13.19 0.1 undecidable manual S 39 0.1952 115 0.29 93
IV.CESI.HHZ. 2021-10-25T22:56:13.72 0.1 undecidable manual S 296 0.214 50 0.14 96
IV.CING.HHZ. 2021-10-25T22:56:13.59 0.3 positive manual P 2 0.4649 50 -0.47 64
IV.OFFI.HHZ. 2021-10-25T22:56:13.15 1.0 undecidable manual P 86 0.3795 50 0.55 21
IV.MNTT.EHZ. 2021-10-25T22:56:12.32 0.3 positive manual P 64 0.3471 50 0.27 68
IV.TERO.HHZ. 2021-10-25T22:56:12.99 0.6 undecidable manual P 132 0.4299 50 -0.48 43
IV.RM33.EHZ. 2021-10-25T22:56:12.61 0.6 negative manual P 175 0.4029 50 -0.39 44
IV.SNTG.HHZ. 2021-10-25T22:56:12.28 0.6 undecidable manual P 334 0.3822 50 -0.36 44
IV.CSP1.EHZ. 2021-10-25T22:56:12.21 0.1 undecidable manual S 8 0.1826 117 -0.27 94
IV.EL6.EHZ. 2021-10-25T22:56:12.76 1.0 undecidable manual P 353 0.4209 50 -0.56 21
IV.LNSS.HHZ. 2021-10-25T22:56:11.12 0.6 positive manual P 197 0.322 50 -0.5 44
IT.MTCL.HGZ. 2021-10-25T22:56:11.38 0.1 undecidable manual S 304 0.1484 122 0.05 99
IV.MMO1.EHZ. 2021-10-25T22:56:10.28 0.1 undecidable manual S 96 0.1169 128 -0.04 100
IV.MML1.EHZ. 2021-10-25T22:56:10.04 0.3 positive manual P 325 0.2482 50 -0.32 69
IV.FDMO.HHZ. 2021-10-25T22:56:10.99 0.1 undecidable manual S 335 0.1385 124 -0.02 100
IV.MF5.EHZ. 2021-10-25T22:56:09.88 1.0 positive manual P 70 0.2266 50 -0.1 24
IV.GUMA.HHZ. 2021-10-25T22:56:09.32 0.1 undecidable manual P 39 0.1952 115 -0.06 98
IV.CESI.HHZ. 2021-10-25T22:56:09.61 0.1 negative manual P 296 0.214 50 -0.17 96
IV.NRCA.HNZ. 2021-10-25T22:56:09.72 0.1 undecidable manual S 207 0.0863 137 0.25 96
IT.MTCL.HGZ. 2021-10-25T22:56:08.63 0.1 undecidable manual P 304 0.1484 122 0.15 97
IV.CSP1.EHZ. 2021-10-25T22:56:08.83 1.0 undecidable manual P 8 0.1826 117 -0.31 23
IV.FDMO.HHZ. 2021-10-25T22:56:08.22 0.1 positive manual P 335 0.1385 124 -0.08 99
IV.NRCA.HNZ. 2021-10-25T22:56:07.55 0.1 positive manual P 207 0.0863 137 0.14 98
IV.MMO1.EHZ. 2021-10-25T22:56:07.73 0.1 undecidable manual P 96 0.1169 128 -0.17 97
IV.MC2.EHZ. 2021-10-25T22:56:06.91 0.6 undecidable manual P 88 0.0153 171 0.24 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:2.4 0.00299 0.16 AML other m 2021-10-25T22:56:09.75
IV.NRCA.HHN. ML:2.4 0.00307 0.06 AML other m 2021-10-25T22:56:09.75
IV.NRCA.HHE. ML:2.2 0.002185 0.1 AML other m 2021-10-25T22:56:09.82
IV.NRCA.HNE. ML:2.2 0.002025 1.1 AML other m 2021-10-25T22:56:10.83
IV.FDMO.HHE. ML:1.4 0.000224 0.82 AML other m 2021-10-25T22:56:11.46
IV.FDMO.HHN. ML:1.6 0.000378 0.34 AML other m 2021-10-25T22:56:11.38
IV.CSP1.EHE. ML:1.8 0.000442 0.58 AML other m 2021-10-25T22:56:12.46
IV.CSP1.EHN. ML:1.8 0.0004635 1.04 AML other m 2021-10-25T22:56:13.26
IV.GUMA.HHE. ML:2 0.000622 0.36 AML other m 2021-10-25T22:56:13.47
IV.GUMA.HNN. ML:1.8 0.0004685 0.32 AML other m 2021-10-25T22:56:13.66
IV.GUMA.HNE. ML:1.9 0.000541 1.04 AML other m 2021-10-25T22:56:13.10
IV.GUMA.HHN. ML:1.8 0.00042 1.62 AML other m 2021-10-25T22:56:13.10
IV.CESI.HHN. ML:1.2 0.0001048 0.76 AML other m 2021-10-25T22:56:14.08
IV.MF5.EHN. ML:1.5 0.0001725 0.12 AML other m 2021-10-25T22:56:14.72
IV.MF5.EHE. ML:1.4 0.0001482 0.36 AML other m 2021-10-25T22:56:14.85
IV.CESI.HHE. ML:1.1 8.54E-5 0.62 AML other m 2021-10-25T22:56:15.08
IV.MML1.EHN. ML:1.4 0.00012 0.68 AML other m 2021-10-25T22:56:15.64
IV.MML1.EHE. ML:1.1 6.935E-5 1.46 AML other m 2021-10-25T22:56:15.11
IV.LNSS.HHE. ML:1.4 9.115E-5 1.1 AML other m 2021-10-25T22:56:17.76
IV.LNSS.HHN. ML:1.3 8.32E-5 0.72 AML other m 2021-10-25T22:56:17.31
IV.SNTG.HHE. ML:1 3.7E-5 0.86 AML other m 2021-10-25T22:56:18.77
IV.SNTG.HHN. ML:1 3.665E-5 1.06 AML other m 2021-10-25T22:56:18.79
IV.RM33.EHN. ML:1.6 0.0001195 0.26 AML other m 2021-10-25T22:56:19.55
IV.MNTT.EHN. ML:1.9 0.0002965 0.26 AML other m 2021-10-25T22:56:19.58
IV.RM33.EHE. ML:1.4 7.99E-5 1.06 AML other m 2021-10-25T22:56:20.56
IV.MNTT.EHE. ML:2.2 0.0006305 0.44 AML other m 2021-10-25T22:56:20.76
IV.CING.HHE. ML:1.2 3.605E-5 0.96 AML other m 2021-10-25T22:56:22.62
IV.CING.HHN. ML:1.2 3.34E-5 0.78 AML other m 2021-10-25T22:56:23.71
IV.EL6.EHE. ML:1.5 9.24E-5 0.56 AML other m 2021-10-25T22:56:32.60
IV.EL6.EHN. ML:1.5 8.43E-5 1.46 AML other m 2021-10-25T22:56:34.13
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