Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 30-07-2020 and time 07:48:48 (Italy) in region 4 km SW Valle Castellana (TE)

A magnitude ML 1.2 earthquake occured in region: 4 km SW Valle Castellana (TE), on

  • 30-07-2020 05:48:48 (UTC)
  • 30-07-2020 07:48:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7160, 13.4560 at 18 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
Valle Castellana TE 4 977 977
Rocca Santa Maria TE 7 537 1514
Acquasanta Terme AP 7 2916 4430
Cortino TE 11 656 5086
Arquata del Tronto AP 14 1178 6264
Roccafluvione AP 16 2010 8274
Amatrice RI 17 2657 10931
Accumoli RI 17 667 11598
Montegallo AP 17 523 12121
Torricella Sicura TE 18 2641 14762
Ascoli Piceno AP 18 49407 64169
Civitella del Tronto TE 18 5116 69285
Crognaleto TE 19 1297 70582
Folignano AP 19 9241 79823
Venarotta AP 19 2066 81889
Campli TE 19 7209 89098
Campotosto AQ 19 542 89640
Fano Adriano TE 19 296 89936

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Teramo (54892 inhabitants)
41 Km N of L'Aquila (69753 inhabitants)
61 Km W of Montesilvano (53738 inhabitants)
67 Km E of Foligno (57155 inhabitants)
68 Km W of Pescara (121014 inhabitants)
68 Km E of Terni (111501 inhabitants)
71 Km NW of Chieti (51815 inhabitants)
97 Km E of Perugia (166134 inhabitants)
100 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NE of Tivoli (56533 inhabitants)
100 Km S of Ancona (100861 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 1.2 2020-07-30
05:48:48		 42.7162 13.4562 18 2020-07-30
05:55:28		 Sala Sismica INGV-Roma 81475551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-30 05:48:48 ± 0.11
Latitude 42.7162 ± 0.0036
Longitude 13.4562 ± 0.0073
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81475551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.12321
Epicentral distance of station farthest from the epicenter (degree) 0.27699
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81475551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-30 05:55:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-07-30T05:48:59.32 0.6 undecidable manual S 295 30.747 109 -0.08 49
IV.RM33.EHZ. 2020-07-30T05:48:59.44 0.6 undecidable manual S 221 30.2475 109 0.15 48
IV.MC2.EHZ. 2020-07-30T05:48:59.70 0.6 undecidable manual S 315 30.6471 109 0.31 46
IV.MMO1.EHZ. 2020-07-30T05:48:57.40 0.6 undecidable manual S 333 22.8549 117 -0.06 49
IV.SMA1.EHZ. 2020-07-30T05:48:55.32 0.6 undecidable manual S 226 13.6752 135 -0.14 49
IV.MC2.EHZ. 2020-07-30T05:48:54.85 0.3 negative manual P 315 30.6471 109 0.09 72
IV.NRCA.HHZ. 2020-07-30T05:48:54.65 0.1 negative manual P 295 30.747 109 -0.12 96
IV.RM33.EHZ. 2020-07-30T05:48:54.68 0.1 undecidable manual P 221 30.2475 109 -0.03 97
IV.MMO1.EHZ. 2020-07-30T05:48:53.58 0.6 undecidable manual P 333 22.8549 117 -0.07 49
IV.SMA1.EHZ. 2020-07-30T05:48:52.57 0.1 undecidable manual P 226 13.6752 135 0.07 99
IV.TERO.HHZ. 2020-07-30T05:48:52.80 0.1 undecidable manual P 131 15.873 130 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.4 0.0001835 0.2 AML other m 2020-07-30T05:48:55.68
IV.SMA1.EHE. ML:1.1 0.00008979999999999999 0.08 AML other m 2020-07-30T05:48:55.74
IV.TERO.HHE. ML:1.2 0.0001175 1.48 AML other m 2020-07-30T05:48:55.81
IV.TERO.HHN. ML:1.2 0.00011300000000000001 0.22 AML other m 2020-07-30T05:48:55.86
IV.NRCA.HHN. ML:1.4 0.00010300000000000001 0.1 AML other m 2020-07-30T05:48:59.56
IV.NRCA.HHE. ML:1.2 0.0000687 0.16 AML other m 2020-07-30T05:48:59.56
IV.RM33.EHN. ML:0.7 0.00002235 0.52 AML other m 2020-07-30T05:49:00.58
IV.RM33.EHE. ML:0.8 0.000022599999999999997 0.96 AML other m 2020-07-30T05:49:00.20
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