Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 30-05-2021 and time 03:55:39 (Italy) in region 2 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 0.7 earthquake occured in region: 2 km SE Castelsantangelo sul Nera (MC), on

  • 30-05-2021 01:55:39 (UTC)
  • 30-05-2021 03:55:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8760, 13.1650 at 7 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.

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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 8 444 725
Visso MC 9 1107 1832
Preci PG 10 724 2556
Norcia PG 11 4957 7513
Montemonaco AP 14 604 8117
Montegallo AP 14 523 8640
Bolognola MC 14 142 8782
Arquata del Tronto AP 16 1178 9960
Montefortino FM 16 1178 11138
Acquacanina MC 17 121 11259
Fiastra MC 18 559 11818
Monte Cavallo MC 19 145 11963
Fiordimonte MC 19 202 12165
Sellano PG 19 1079 13244
Amandola FM 20 3629 16873

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
50 Km W of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 Km W 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
Reviewed
Rev100 		ML 0.7 2021-05-30
01:55:39		 42.8757 13.1653 7 2021-05-30
02:01:19		 Sala Sismica INGV-Roma 90616821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-30 01:55:39 ± 0.12
Latitude 42.8757 ± 0.0027
Longitude 13.1653 ± 0.0049
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90616821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 439
Semi-minor axis of confidence ellipse (meter) 58
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.03957
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 90616821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-30 02:01:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SAP2.EHZ. 2021-05-30T01:55:50.58 0.6 undecidable manual S 38 31.0467 103 0.36 46
IV.PF6.EHZ. 2021-05-30T01:55:49.36 0.6 undecidable manual S 5 29.1486 104 -0.25 47
IV.T1299.HNZ. 2021-05-30T01:55:49.82 0.3 undecidable manual S 160 28.4493 104 0.46 67
IV.MF5.EHZ. 2021-05-30T01:55:49.60 0.6 undecidable manual S 62 26.9508 105 0.74 40
IV.GUMA.HNZ. 2021-05-30T01:55:48.41 0.6 undecidable manual S 34 24.8529 106 0.23 47
IV.CSP1.EHZ. 2021-05-30T01:55:48.10 0.6 undecidable manual S 8 24.1536 106 0.16 48
IV.CESI.HHZ. 2021-05-30T01:55:48.68 0.6 undecidable manual S 304 25.5522 106 0.28 47
IV.MTRA.HNZ. 2021-05-30T01:55:47.42 0.6 undecidable manual S 125 22.9548 107 -0.12 49
IV.FDMO.HHZ. 2021-05-30T01:55:46.60 0.6 undecidable manual S 340 18.9699 111 0.39 46
IT.MTCL.HGZ. 2021-05-30T01:55:46.28 0.6 undecidable manual S 314 18.7701 111 0.12 49
IV.SAP2.EHZ. 2021-05-30T01:55:45.97 0.1 undecidable manual P 38 31.0467 103 0.41 90
IV.SMA1.EHN. 2021-05-30T01:55:45.88 0.1 undecidable manual P 153 30.5472 103 0.41 90
IV.LNSS.HNE. 2021-05-30T01:55:45.43 0.1 undecidable manual P 199 31.9458 103 -0.31 92
IV.T1299.HNZ. 2021-05-30T01:55:45.06 0.1 undecidable manual P 160 28.4493 104 0 99
IV.CESI.HHZ. 2021-05-30T01:55:44.38 0.3 undecidable manual P 304 25.5522 106 -0.12 72
IV.MF5.EHZ. 2021-05-30T01:55:44.85 1.0 negative manual P 62 26.9508 105 0.08 24
IV.PF6.EHZ. 2021-05-30T01:55:44.73 0.1 undecidable manual P 5 29.1486 104 -0.47 89
IV.GUMA.HNZ. 2021-05-30T01:55:44.25 0.1 undecidable manual P 34 24.8529 106 -0.13 97
IV.MMO1.EHZ. 2021-05-30T01:55:44.10 0.6 undecidable manual S 79 13.3755 118 -0.35 47
IV.MTRA.HNZ. 2021-05-30T01:55:43.44 0.1 undecidable manual P 125 22.9548 107 -0.57 87
IV.FDMO.HHZ. 2021-05-30T01:55:43.14 1.0 negative manual P 340 18.9699 111 -0.1 25
IT.MTCL.HGZ. 2021-05-30T01:55:43.09 0.1 undecidable manual P 314 18.7701 111 -0.12 98
IV.CSP1.EHZ. 2021-05-30T01:55:43.90 1.0 undecidable manual P 8 24.1536 106 -0.34 23
IV.MMO1.EHZ. 2021-05-30T01:55:42.00 0.3 positive manual P 79 13.3755 118 -0.22 72
IV.NRCA.HHZ. 2021-05-30T01:55:42.61 0.6 undecidable manual S 222 6.2937 139 0.13 50
IV.FEMA.HNZ. 2021-05-30T01:55:42.29 0.1 undecidable manual P 316 13.3755 118 0.06 100
IV.NRCA.HHZ. 2021-05-30T01:55:41.25 0.1 undecidable manual P 222 6.2937 139 0.16 99
IV.MC2.EHZ. 2021-05-30T01:55:41.77 0.6 undecidable manual S 26 4.3956 148 -0.33 48
IV.MC2.EHZ. 2021-05-30T01:55:40.71 0.6 undecidable manual P 26 4.3956 148 -0.16 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.0 0.0006167223 0.12 AML other m 2021-05-30T01:55:43.59
IV.NRCA.HHN. ML:0.0 0.00045850925 0.16 AML other m 2021-05-30T01:55:42.99
IV.NRCA.HNE. ML:0.0 0.0005328673999999999 0.12 AML other m 2021-05-30T01:55:43.59
IV.NRCA.HNN. ML:0.0 0.0004039477 0.16 AML other m 2021-05-30T01:55:42.99
IV.FDMO.HHE. ML:0.3 0.000016263005 0.12 AML other m 2021-05-30T01:55:47.53
IV.FDMO.HHN. ML:0.4 0.000022189745000000002 0.2192 AML other m 2021-05-30T01:55:48.34
IV.CSP1.EHE. ML:0.9 0.00004858549 0.1408 AML other m 2021-05-30T01:55:49.03
IV.CSP1.EHN. ML:0.9 0.00005528505 0.1808 AML other m 2021-05-30T01:55:49.47
IV.CESI.HHE. ML:0.5 0.0000179357615 0.1808 AML other m 2021-05-30T01:55:49.05
IV.CESI.HHN. ML:0.9 0.000050073914999999996 0.2608 AML other m 2021-05-30T01:55:49.06
IV.MF5.EHN. ML:0.8 0.00003424934 1.2992 AML other m 2021-05-30T01:55:49.42
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