Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 27-08-2021 and time 16:10:30 (Italy) in region 2 km NE Castelsantangelo sul Nera (MC)

A magnitude ML 2.5 earthquake occured in region: 2 km NE Castelsantangelo sul Nera (MC), on

  • 27-08-2021 14:10:30 (UTC)
  • 27-08-2021 16:10:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9060, 13.1700 at 14 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.

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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 14 121 3423
Norcia PG 14 4957 8380
Montefortino FM 15 1178 9558
Fiastra MC 15 559 10117
Montegallo AP 15 523 10640
Fiordimonte MC 16 202 10842
Monte Cavallo MC 17 145 10987
Amandola FM 17 3629 14616
Sarnano MC 18 3264 17880
Arquata del Tronto AP 18 1178 19058
Pieve Torina MC 18 1458 20516
Pievebovigliana MC 19 866 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)
57 Km NE of Terni (111501 inhabitants)
64 Km N of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
98 Km NW of Pescara (121014 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 2.5 2021-08-27
14:10:30		 42.906 13.1703 14 2021-12-29
11:12:28		 Bollettino Sismico Italiano INGV 95237541
Reviewed
Rev100 		ML 2.4 2021-08-27
14:10:30		 42.9047 13.1793 12 2021-08-27
14:27:30		 Sala Sismica INGV-Roma 94710511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-27 14:10:30 ± 0.04
Latitude 42.9060 ± 0.0018
Longitude 13.1703 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95237541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 27
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 85
Number of defining phases 65
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.82468
Number of stations at which the event was observed 59
Number of stations from which data was used for origin computation 39
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 55
Type of magnitude ML
Reference to an origin 95237541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-23 11:19:24

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 94710511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-27 14:27:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-08-27T14:10:51.90 1.0 undecidable manual S 344 68.2761 93 0.99 17
IV.GIGS.HHN. 2021-08-27T14:10:48.46 0.6 undecidable manual S 147 59.9955 93 -0.25 44
IV.MOMA.HHZ. 2021-08-27T14:10:46.70 0.3 undecidable manual S 257 50.1165 94 0.62 61
IV.EL6.EHZ. 2021-08-27T14:10:45.79 0.3 undecidable manual S 353 47.3193 94 0.47 65
IV.NARO.HHZ. 2021-08-27T14:10:45.74 0.3 undecidable manual P 329 91.5417 92 -0.02 64
IV.T0110.HHZ. 2021-08-27T14:10:45.51 0.3 undecidable manual P 146 89.9433 92 0.01 65
IV.TERO.HHZ. 2021-08-27T14:10:45.13 0.6 undecidable manual S 132 47.3193 94 -0.19 46
IV.ATVA.EHE. 2021-08-27T14:10:45.33 0.6 undecidable manual P 300 82.7505 92 0.93 34
IV.CAMP.HHE. 2021-08-27T14:10:44.75 0.3 undecidable manual S 155 45.4212 95 -0.08 71
IV.RM33.HNE. 2021-08-27T14:10:44.86 0.3 undecidable manual S 175 44.2224 95 0.36 65
IV.ATVO.HHZ. 2021-08-27T14:10:44.34 0.3 undecidable manual P 311 81.252 92 0.17 65
IV.ATLO.EHE. 2021-08-27T14:10:43.60 0.3 undecidable manual P 307 76.6677 92 0.14 66
IV.ARVD.HHZ. 2021-08-27T14:10:42.03 0.3 undecidable manual P 344 68.2761 93 -0.13 66
IV.LNSS.HNZ. 2021-08-27T14:10:42.60 0.6 undecidable manual S 198 35.2425 97 0.47 43
IV.MTGR.HHZ. 2021-08-27T14:10:42.87 3.0 positive manual P -9.99 0
IV.FIAM.HNN. 2021-08-27T14:10:42.27 0.1 undecidable manual P 184 70.8735 93 -0.3 85
IV.MURB.HHE. 2021-08-27T14:10:41.96 0.1 undecidable manual P 307 65.5899 93 0.2 88
IV.SMA1.EHN. 2021-08-27T14:10:41.37 0.6 undecidable manual S 156 33.3444 97 -0.26 46
IV.CERT.HHZ. 2021-08-27T14:10:41.60 3.0 undecidable manual Sn -7.44 0
IV.MDAR.HNN. 2021-08-27T14:10:41.15 0.6 undecidable manual S 356 31.8459 98 -0.09 47
IV.GAVE.EHN. 2021-08-27T14:10:41.67 0.6 undecidable manual S 224 32.6451 98 0.23 46
IV.T1299.HNN. 2021-08-27T14:10:41.50 0.6 undecidable manual S 163 31.5462 98 0.37 44
IV.GIGS.HHN. 2021-08-27T14:10:40.61 0.3 undecidable manual P 147 59.9955 93 -0.29 66
IV.SAP2.EHE. 2021-08-27T14:10:40.87 0.3 undecidable manual S 41 28.1496 100 0.62 63
IV.CESX.HHE. 2021-08-27T14:10:40.41 0.3 undecidable manual P 235 57.8976 93 -0.16 67
IV.MML1.HNE. 2021-08-27T14:10:40.16 0.6 undecidable manual S 325 28.0497 100 -0.07 47
IV.MTRA.HNZ. 2021-08-27T14:10:39.20 1.0 undecidable manual S 132 24.753 102 -0.16 24
IV.PF6.EHN. 2021-08-27T14:10:39.26 0.6 undecidable manual S 4 25.752 101 -0.37 45
IV.ARRO.EHZ. 2021-08-27T14:10:39.18 0.1 undecidable manual P 222 49.0176 94 -0.02 93
IV.MF5.EHZ. 2021-08-27T14:10:39.83 0.3 undecidable manual S 69 25.1526 102 0.35 68
IV.MOMA.HHZ. 2021-08-27T14:10:39.51 0.1 undecidable manual P 257 50.1165 94 0.14 92
IV.ATCC.EHE. 2021-08-27T14:10:39.87 0.1 undecidable manual P 306 53.0025 94 0.05 93
IV.CESI.HHE. 2021-08-27T14:10:39.35 0.3 undecidable manual S 297 24.1536 103 0.14 73
IV.EL6.EHZ. 2021-08-27T14:10:38.73 0.1 positive manual P 353 47.3193 94 -0.21 90
IV.TERO.HHZ. 2021-08-27T14:10:38.66 0.3 undecidable manual P 132 47.3193 94 -0.28 67
IV.CAMP.HHE. 2021-08-27T14:10:38.31 0.6 undecidable manual P 155 45.4212 95 -0.35 44
IV.ASSB.HHN. 2021-08-27T14:10:38.50 0.1 undecidable manual P 290 44.2224 95 0.03 95
IV.GUMA.HHZ. 2021-08-27T14:10:38.74 0.6 undecidable manual S 38 21.9669 105 0.11 48
IV.RM33.HNE. 2021-08-27T14:10:38.40 0.1 undecidable manual P 175 44.2224 95 -0.07 94
IV.MNTT.EHE. 2021-08-27T14:10:38.13 0.1 undecidable manual P 63 38.628 96 0.52 85
IT.MTCL.HGZ. 2021-08-27T14:10:37.23 0.6 undecidable manual S 305 16.9719 114 -0.14 48
IV.MNTP.HNZ. 2021-08-27T14:10:37.39 0.3 undecidable manual P 43 35.3424 97 0.29 68
IV.CSP1.EHZ. 2021-08-27T14:10:37.96 0.3 undecidable manual S 8 20.7681 107 -0.38 68
IV.SAP2.EHE. 2021-08-27T14:10:36.15 0.1 undecidable manual P 41 28.1496 100 0.14 95
IV.GAVE.EHN. 2021-08-27T14:10:36.68 0.1 undecidable manual P 224 32.6451 98 -0.02 96
IV.MMO1.EHZ. 2021-08-27T14:10:36.08 0.3 undecidable manual S 93 12.7761 125 -0.31 72
IV.T1299.HNN. 2021-08-27T14:10:36.64 0.3 undecidable manual P 163 31.5462 98 0.12 71
IV.SMA1.EHN. 2021-08-27T14:10:36.61 0.1 undecidable manual P 156 33.3444 97 -0.2 94
IV.FDMO.HHZ. 2021-08-27T14:10:36.76 0.3 undecidable manual S 335 15.9729 116 -0.37 69
IV.LNSS.HNZ. 2021-08-27T14:10:36.96 0.1 undecidable manual P 198 35.2425 97 -0.13 94
IV.MDAR.HNN. 2021-08-27T14:10:36.33 0.1 undecidable manual P 356 31.8459 98 -0.25 91
IV.FEMA.HNZ. 2021-08-27T14:10:36.15 0.6 undecidable manual S 302 11.5773 129 0 50
IV.MTRA.HNZ. 2021-08-27T14:10:35.20 0.1 undecidable manual P 132 24.753 102 -0.3 93
IV.MML1.HNE. 2021-08-27T14:10:35.84 0.1 positive manual P 325 28.0497 100 -0.16 94
IV.CESI.HHE. 2021-08-27T14:10:35.40 0.1 undecidable manual P 297 24.1536 103 -0.01 97
IV.NRCA.HNZ. 2021-08-27T14:10:35.48 0.3 undecidable manual S 210 9.2796 137 -0.2 74
IV.GUMA.HHZ. 2021-08-27T14:10:35.11 0.1 positive manual P 38 21.9669 105 0.04 98
IV.MF5.EHZ. 2021-08-27T14:10:35.72 0.1 undecidable manual P 69 25.1526 102 0.16 95
IV.PF6.EHN. 2021-08-27T14:10:35.35 0.1 undecidable manual P 4 25.752 101 -0.3 92
IV.CSP1.EHZ. 2021-08-27T14:10:34.73 0.1 positive manual P 8 20.7681 107 -0.17 95
IT.MTCL.HGZ. 2021-08-27T14:10:34.27 0.3 undecidable manual P 305 16.9719 114 -0.08 73
IV.FDMO.HHZ. 2021-08-27T14:10:34.06 0.1 positive manual P 335 15.9729 116 -0.15 96
IV.MC2.EHZ. 2021-08-27T14:10:34.96 0.3 undecidable manual S 68 1.5984 172 0.17 73
IX.SCL3.EHZ.02 2021-08-27T14:10:33.78 3.0 positive manual P -9.99 0
IV.NRCA.HNZ. 2021-08-27T14:10:33.38 0.1 undecidable manual P 210 9.2796 137 0.01 100
IV.FEMA.HNZ. 2021-08-27T14:10:33.74 0.1 undecidable manual P 302 11.5773 129 0.1 99
IV.MMO1.EHZ. 2021-08-27T14:10:33.63 0.1 undecidable manual P 93 12.7761 125 -0.15 98
IV.MC2.EHZ. 2021-08-27T14:10:32.98 0.1 negative manual P 68 1.5984 172 0.12 99
IV.OVO.HHZ. 2021-08-27T14:10:30.93 3.0 undecidable manual P -9.99 0
IV.PZUN.HHZ. 2021-08-27T14:10:26.30 3.0 undecidable manual P -9.99 0
IV.PAOL.HHZ. 2021-08-27T14:10:23.04 3.0 undecidable manual P -9.99 0
SL.LJU.BHZ. 2021-08-27T14:10:06.77 3.0 undecidable manual P -9.99 0
IV.CRND.HNZ. 2021-08-27T14:10:02.22 3.0 undecidable manual Sg 1.22 0
IV.IMOL.HNZ. 2021-08-27T14:09:58.47 3.0 undecidable manual Sg 2.78 0
OX.CIMO.HHZ. 2021-08-27T14:09:48.76 3.0 negative manual P -9.99 0
OX.MPRI.HHZ. 2021-08-27T14:09:43.61 3.0 undecidable manual P -9.99 0
IV.ZEN8.EHZ. 2021-08-27T14:09:33.88 3.0 undecidable manual S -5.17 0
GU.GSCL.HHZ. 2021-08-27T14:09:31.67 3.0 undecidable manual S -5.96 0
GU.STV.HHZ. 2021-08-27T14:09:23.08 3.0 undecidable manual P -9.99 0
GU.RNCA.HHZ. 2021-08-27T14:09:16.41 3.0 undecidable manual S -0.3 0
IV.CADC.EHZ. 2021-08-27T14:09:07.92 3.0 negative manual P -9.99 0
IV.MSSA.HHZ. 2021-08-27T14:09:07.43 3.0 undecidable manual P -9.99 0
IV.MILN.HNZ. 2021-08-27T14:09:02.77 3.0 undecidable manual P -9.99 0
GU.GORR.HHZ. 2021-08-27T14:08:58.34 3.0 undecidable manual P -9.99 0
IV.PCN.EHZ. 2021-08-27T14:08:58.64 3.0 positive manual P -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:3.3 0.0229 0.08 AML other m 2021-08-27T14:10:35.66
IV.NRCA.HHE. ML:3.2 0.015149999999999999 0.16 AML other m 2021-08-27T14:10:35.70
IV.NRCA.HNN. ML:3.3 0.0212 0.1 AML other m 2021-08-27T14:10:35.67
IV.NRCA.HNE. ML:3.1 0.01288 1.12 AML other m 2021-08-27T14:10:36.70
IV.FEMA.HNN. ML:2.5 0.00322 0.8 AML other m 2021-08-27T14:10:36.07
IV.FDMO.HHE. ML:2.5 0.00246 1.14 AML other m 2021-08-27T14:10:37.72
IV.FDMO.HHN. ML:2.7 0.00436 0.28 AML other m 2021-08-27T14:10:37.20
IV.FEMA.HNE. ML:2.6 0.003955 0.96 AML other m 2021-08-27T14:10:37.78
IV.GUMA.HHE. ML:3.0 0.007195 0.28 AML other m 2021-08-27T14:10:39.23
IV.GUMA.HNN. ML:2.9 0.005475 0.5 AML other m 2021-08-27T14:10:39.22
IV.GUMA.HNE. ML:2.9 0.00501 0.32 AML other m 2021-08-27T14:10:39.27
IV.CSP1.EHE. ML:2.6 0.0029050000000000005 0.4 AML other m 2021-08-27T14:10:39.47
IV.GUMA.HHN. ML:2.8 0.004279999999999999 0.6 AML other m 2021-08-27T14:10:39.72
IV.CESI.HHN. ML:2.3 0.00124 0.48 AML other m 2021-08-27T14:10:39.73
IV.CESI.HHE. ML:2.2 0.0010465 0.26 AML other m 2021-08-27T14:10:39.73
IV.MTRA.HNE. ML:2.6 0.002455 1.74 AML other m 2021-08-27T14:10:39.12
IV.MTRA.EHE. ML:2.6 0.0024749999999999998 0.24 AML other m 2021-08-27T14:10:40.12
IV.MTRA.HNN. ML:2.5 0.0016899999999999999 1.12 AML other m 2021-08-27T14:10:40.11
IV.MTRA.EHN. ML:2.5 0.00171 1.1 AML other m 2021-08-27T14:10:40.12
IV.MF5.EHN. ML:2.5 0.001625 0.12 AML other m 2021-08-27T14:10:40.52
IV.CSP1.EHN. ML:2.8 0.004335 1.1 AML other m 2021-08-27T14:10:40.26
IV.SAP2.EHN. ML:3.2 0.007375 0.2 AML other m 2021-08-27T14:10:41.20
IV.SAP2.EHE. ML:2.4 0.00134 0.1 AML other m 2021-08-27T14:10:41.68
IV.SMA1.EHN. ML:2.5 0.0012915000000000001 0.26 AML other m 2021-08-27T14:10:41.89
IV.GAVE.EHE. ML:2.6 0.0015 0.96 AML other m 2021-08-27T14:10:42.61
IV.GAVE.HNN. ML:2.1 0.0004725 0.24 AML other m 2021-08-27T14:10:42.25
IV.GAVE.EHN. ML:2.6 0.001575 0.24 AML other m 2021-08-27T14:10:42.14
IV.GAVE.HNE. ML:2.5 0.00138 0.28 AML other m 2021-08-27T14:10:42.61
IV.MF5.EHE. ML:2.3 0.0012269999999999998 1.46 AML other m 2021-08-27T14:10:43.93
IV.LNSS.HHN. ML:2.3 0.00078 0.98 AML other m 2021-08-27T14:10:43.21
IV.LNSS.HHE. ML:2.2 0.000682 0.7 AML other m 2021-08-27T14:10:44.31
IV.MNTT.EHN. ML:2.8 0.0024649999999999997 0.64 AML other m 2021-08-27T14:10:45.41
IV.RM33.EHN. ML:2.6 0.00122 0.24 AML other m 2021-08-27T14:10:45.31
IV.RM33.HNN. ML:2.6 0.001245 0.24 AML other m 2021-08-27T14:10:45.31
IV.RM33.EHE. ML:2.4 0.0008325 0.5 AML other m 2021-08-27T14:10:45.27
IV.RM33.HNE. ML:2.5 0.0008725 0.5 AML other m 2021-08-27T14:10:45.27
IV.SMA1.EHE. ML:2.3 0.0009270000000000001 1.48 AML other m 2021-08-27T14:10:45.11
IV.TERO.HNN. ML:2.4 0.000735 0.84 AML other m 2021-08-27T14:10:46.15
IV.TERO.HNE. ML:2.3 0.0005 0.32 AML other m 2021-08-27T14:10:46.16
IV.ASSB.HHN. ML:2.2 0.00041900000000000005 0.18 AML other m 2021-08-27T14:10:46.28
IV.ASSB.HHE. ML:2.2 0.0005250000000000001 0.72 AML other m 2021-08-27T14:10:46.15
IV.ARRO.EHE. ML:2.0 0.000285 0.2 AML other m 2021-08-27T14:10:46.90
IV.MNTT.EHE. ML:2.7 0.00185 1.46 AML other m 2021-08-27T14:10:47.12
IV.MOMA.HHN. ML:2.2 0.0003655 0.54 AML other m 2021-08-27T14:10:47.48
IV.ARRO.EHN. ML:1.9 0.00020649999999999998 0.42 AML other m 2021-08-27T14:10:47.70
IV.MOMA.HHE. ML:2.2 0.00041400000000000003 0.9 AML other m 2021-08-27T14:10:47.86
IV.MOMA.HNE. ML:2.3 0.0004685 0.9 AML other m 2021-08-27T14:10:47.86
IV.MOMA.HNN. ML:2.2 0.000418 1.1 AML other m 2021-08-27T14:10:48.75
IV.EL6.EHE. ML:2.3 0.0005349999999999999 0.78 AML other m 2021-08-27T14:10:49.19
IV.EL6.EHN. ML:2.3 0.0005445 1.48 AML other m 2021-08-27T14:10:50.81
IV.CESX.HHN. ML:2.1 0.000264 0.4 AML other m 2021-08-27T14:10:51.42
IV.CESX.HHE. ML:2.0 0.0002285 0.44 AML other m 2021-08-27T14:10:51.70
IV.ARVD.HHE. ML:2.2 0.000247 0.68 AML other m 2021-08-27T14:10:52.62
IV.ARVD.HHN. ML:1.9 0.00013900000000000002 0.2 AML other m 2021-08-27T14:10:52.51
IV.CERT.HHN. ML:1.9 0.00006405 1.62 AML other m 2021-08-27T14:11:06.04
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
Waveforms Seismic signals in miniseed + resp format Download