Earthquake with magnitude of ML 1.6 on date 26-10-2021 and time 03:49:04 (Italy) in region 2 km NE Castelsantangelo sul Nera (MC)

A magnitude ML 1.6 earthquake occured in region: 2 km NE Castelsantangelo sul Nera (MC), on

  • 26-10-2021 01:49:04 (UTC)
  • 26-10-2021 03:49:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.913, 13.169 at 11 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 4 444 725
Visso MC 7 1107 1832
Bolognola MC 10 142 1974
Preci PG 11 724 2698
Montemonaco AP 13 604 3302
Acquacanina MC 13 121 3423
Fiastra MC 14 559 3982
Montefortino FM 15 1178 5160
Norcia PG 15 4957 10117
Fiordimonte MC 15 202 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)
83 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 1.6 2021-10-26
01:49:04
42.9127 13.1692 11 2021-10-26
01:54:33
Sala Sismica INGV-Roma 96992031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 01:49:04 ± 0.04
Latitude 42.9127 ± 0.0027
Longitude 13.1692 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96992031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 236
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32376
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 96992031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 01:54:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FAGN.HHZ. 2021-10-26T01:49:30.29 3.0 undecidable manual S 0.16 0
IV.ARVD.HHZ. 2021-10-26T01:49:26.70 3.0 undecidable manual S -0.08 0
IV.PIEI.HHZ. 2021-10-26T01:49:20.21 3.0 undecidable manual P 0.22 0
IV.NARO.HHZ. 2021-10-26T01:49:20.78 3.0 undecidable manual P -0.03 0
IV.FAGN.HHZ. 2021-10-26T01:49:18.79 3.0 undecidable manual P -0.1 0
IV.LNSS.HHZ. 2021-10-26T01:49:17.08 0.3 undecidable manual S 197 0.3238 50 0.06 72
IV.ARVD.HHZ. 2021-10-26T01:49:16.79 3.0 negative manual P -0.22 0
IV.FIAM.HHZ. 2021-10-26T01:49:16.98 3.0 undecidable manual P -0.47 0
IV.ATCC.EHZ. 2021-10-26T01:49:14.50 3.0 undecidable manual P 0.15 0
IV.MML1.EHZ. 2021-10-26T01:49:14.81 0.6 undecidable manual S 324 0.2473 50 0.06 48
IV.CING.HHZ. 2021-10-26T01:49:14.05 3.0 positive manual P -0.4 0
IV.RM33.EHZ. 2021-10-26T01:49:13.01 3.0 negative manual P -0.09 0
IV.OFFI.HHZ. 2021-10-26T01:49:13.51 3.0 negative manual P 0.45 0
IV.GUMA.HHZ. 2021-10-26T01:49:13.60 0.6 undecidable manual S 39 0.1934 50 0.46 45
IV.TERO.HHZ. 2021-10-26T01:49:13.19 3.0 undecidable manual P -0.63 0
IV.CESI.HHZ. 2021-10-26T01:49:13.94 0.6 undecidable manual S 296 0.214 50 0.17 48
IV.CSP1.EHZ. 2021-10-26T01:49:12.67 0.3 undecidable manual S 8 0.1808 50 -0.12 73
IV.SNTG.HHZ. 2021-10-26T01:49:12.80 3.0 negative manual P -0.02 0
IV.MNTT.EHZ. 2021-10-26T01:49:12.78 3.0 positive manual P 0.29 0
IT.MTCL.HGZ. 2021-10-26T01:49:11.71 0.3 undecidable manual S 303 0.1484 123 -0.04 74
IV.LNSS.HHZ. 2021-10-26T01:49:11.55 0.3 positive manual P 197 0.3238 50 -0.35 67
IV.FDMO.HHZ. 2021-10-26T01:49:11.36 0.6 undecidable manual S 334 0.1376 125 -0.05 50
IV.SMA1.EHZ. 2021-10-26T01:49:11.16 3.0 positive manual P -0.31 0
IV.MML1.EHZ. 2021-10-26T01:49:10.47 0.1 positive manual P 324 0.2473 50 -0.12 96
IV.CESI.HHZ. 2021-10-26T01:49:10.03 0.1 positive manual P 296 0.214 50 0 99
IV.NRCA.HNZ. 2021-10-26T01:49:10.14 0.3 undecidable manual S 207 0.089 138 0.14 74
IV.SAP2.EHZ. 2021-10-26T01:49:10.79 3.0 undecidable manual P 0.02 0
IV.MF5.EHZ. 2021-10-26T01:49:10.31 3.0 positive manual P -0.07 0
IV.MMO1.EHZ. 2021-10-26T01:49:10.71 0.3 undecidable manual S 97 0.116 130 -0.05 75
IV.CSP1.EHZ. 2021-10-26T01:49:09.39 0.1 undecidable manual P 8 0.1808 50 -0.07 98
IV.GUMA.HHZ. 2021-10-26T01:49:09.76 0.3 positive manual P 39 0.1934 50 0.1 73
IV.FDMO.HHZ. 2021-10-26T01:49:08.67 0.1 positive manual P 334 0.1376 125 0.01 100
IT.MTCL.HGZ. 2021-10-26T01:49:08.87 0.1 undecidable manual P 303 0.1484 123 0.01 100
IV.MMO1.EHZ. 2021-10-26T01:49:08.22 0.1 undecidable manual P 97 0.116 130 -0.07 99
IV.NRCA.HNZ. 2021-10-26T01:49:07.97 0.1 negative manual P 207 0.089 138 0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:2.6 0.0043 0.16 AML other m 2021-10-26T01:49:10.18
IV.NRCA.HHN. ML:2.6 0.00452 0.06 AML other m 2021-10-26T01:49:10.18
IV.NRCA.HHE. ML:2.4 0.003105 0.88 AML other m 2021-10-26T01:49:10.26
IV.NRCA.HNE. ML:2.4 0.00299 0.9 AML other m 2021-10-26T01:49:10.26
IV.FDMO.HHE. ML:1.6 0.000318 0.28 AML other m 2021-10-26T01:49:11.78
IV.FDMO.HHN. ML:1.8 0.000572 0.12 AML other m 2021-10-26T01:49:11.84
IV.CSP1.EHE. ML:1.8 0.0005425 0.1 AML other m 2021-10-26T01:49:12.92
IV.GUMA.HHE. ML:1.8 0.000448 0.36 AML other m 2021-10-26T01:49:13.93
IV.GUMA.HNN. ML:1.8 0.0004095 1.46 AML other m 2021-10-26T01:49:13.96
IV.GUMA.HNE. ML:1.8 0.0004245 1.68 AML other m 2021-10-26T01:49:14.08
IV.CESI.HHN. ML:1.4 0.0001585 1.5 AML other m 2021-10-26T01:49:14.22
IV.CSP1.EHN. ML:1.9 0.000604 0.64 AML other m 2021-10-26T01:49:14.57
IV.CESI.HHE. ML:1.3 0.0001165 0.64 AML other m 2021-10-26T01:49:14.79
IV.MF5.EHN. ML:1.6 0.0002045 0.12 AML other m 2021-10-26T01:49:15.17
IV.MML1.HNN. ML:1.7 0.0002545 1.34 AML other m 2021-10-26T01:49:15.09
IV.MML1.EHN. ML:1.5 0.0001685 1.36 AML other m 2021-10-26T01:49:15.09
IV.MML1.HNE. ML:1.4 0.0001405 1.14 AML other m 2021-10-26T01:49:16.58
IV.GUMA.HHN. ML:1.8 0.000387 0.26 AML other m 2021-10-26T01:49:16.03
IV.MML1.EHE. ML:1.3 0.00010765 0.38 AML other m 2021-10-26T01:49:16.49
IV.SMA1.EHN. ML:1.6 0.000156 0.24 AML other m 2021-10-26T01:49:16.46
IV.SAP2.EHN. ML:2.3 0.001015 0.22 AML other m 2021-10-26T01:49:17.59
IV.LNSS.HHE. ML:1.6 0.0001725 0.88 AML other m 2021-10-26T01:49:17.20
IV.LNSS.HHN. ML:1.6 0.000154 0.72 AML other m 2021-10-26T01:49:17.74
IV.SAP2.EHE. ML:1.4 0.0001458 1.56 AML other m 2021-10-26T01:49:18.83
IV.MF5.EHE. ML:1.5 0.0001745 0.52 AML other m 2021-10-26T01:49:18.83
IV.SNTG.HHN. ML:1.2 4.59E-5 0.92 AML other m 2021-10-26T01:49:19.72
IV.SNTG.HHE. ML:1.2 5.16E-5 0.12 AML other m 2021-10-26T01:49:19.81
IV.RM33.EHN. ML:1.8 0.00019 0.28 AML other m 2021-10-26T01:49:19.98
IV.RM33.EHE. ML:1.6 0.0001235 1.88 AML other m 2021-10-26T01:49:20.99
IV.MNTT.EHN. ML:2 0.0003495 0.24 AML other m 2021-10-26T01:49:20.04
IV.MNTT.EHE. ML:2.3 0.0007545 0.1 AML other m 2021-10-26T01:49:20.21
IV.SMA1.EHE. ML:1.5 0.000125 0.56 AML other m 2021-10-26T01:49:20.42
IV.CING.HHN. ML:1.3 5.135E-5 0.68 AML other m 2021-10-26T01:49:22.25
IV.CING.HHE. ML:1.3 4.775E-5 0.12 AML other m 2021-10-26T01:49:22.42
IV.FIAM.HHE. ML:1 1.685E-5 0.48 AML other m 2021-10-26T01:49:27.57
IV.FIAM.HHN. ML:1.1 1.83E-5 0.68 AML other m 2021-10-26T01:49:28.56
IV.FAGN.HHN. ML:1.5 4.505E-5 1.68 AML other m 2021-10-26T01:49:32.15
IV.PIEI.HHE. ML:1.3 2.55E-5 0.6 AML other m 2021-10-26T01:49:33.77
IV.PIEI.HHN. ML:1.1 1.436E-5 0.98 AML other m 2021-10-26T01:49:34.67
IV.FAGN.HHE. ML:1.6 5.135E-5 1.6 AML other m 2021-10-26T01:49:35.13
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