Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 30-09-2020 and time 04:18:20 (UTC) in region 2 km E Roccafluvione (AP)

A magnitude ML 1.5 earthquake occured in region: 2 km E Roccafluvione (AP), on

  • 30-09-2020 04:18:20 (UTC)
  • 30-09-2020 06:18:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8600, 13.5010 at 19 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roccafluvione AP 2 2010 2010
Venarotta AP 3 2066 4076
Palmiano AP 6 196 4272
Ascoli Piceno AP 6 49407 53679
Force AP 12 1354 55033
Folignano AP 12 9241 64274
Rotella AP 12 906 65180
Acquasanta Terme AP 12 2916 68096
Comunanza AP 13 3166 71262
Castignano AP 13 2796 74058
Montegallo AP 14 523 74581
Valle Castellana TE 14 977 75558
Montedinove AP 14 488 76046
Appignano del Tronto AP 14 1785 77831
Montefalcone Appennino FM 15 424 78255
Montemonaco AP 15 604 78859
Maltignano AP 16 2401 81260
Montefortino FM 16 1178 82438
Civitella del Tronto TE 17 5116 87554
Smerillo FM 17 365 87919
Montalto delle Marche AP 17 2122 90041
Castel di Lama AP 17 8634 98675
Offida AP 18 5058 103733
Amandola FM 18 3629 107362
Montelparo FM 18 778 108140
Santa Vittoria in Matenano FM 18 1330 109470
Sant'Egidio alla Vibrata TE 18 9811 119281
Castorano AP 19 2380 121661
Arquata del Tronto AP 19 1178 122839
Rocca Santa Maria TE 19 537 123376
Monte San Martino MC 20 765 124141
Ancarano TE 20 1857 125998
Monte Rinaldo FM 20 379 126377

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
66 Km NW of Montesilvano (53738 inhabitants)
66 Km E of Foligno (57155 inhabitants)
73 Km NW of Pescara (121014 inhabitants)
77 Km E of Terni (111501 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
84 Km S of Ancona (100861 inhabitants)
95 Km E of Perugia (166134 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 1.5 2020-09-30
04:18:20		 42.8598 13.5007 19 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85789221
Reviewed
Rev100 		ML 1.5 2020-09-30
04:18:19		 42.8602 13.5117 20 2020-09-30
04:42:19		 Sala Sismica INGV-Roma 83377801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-30 04:18:20 ± 0.13
Latitude 42.8598 ± 0.0036
Longitude 13.5007 ± 0.0061
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85789221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 490
Semi-minor axis of confidence ellipse (meter) 42
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.12860
Epicentral distance of station farthest from the epicenter (degree) 0.52790
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 85789221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-28 11:41:51

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 83377801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-30 04:42:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2020-09-30T04:18:39.19 0.6 undecidable manual S 152 58.5969 100 0.8 38
IV.CESI.HHZ. 2020-09-30T04:18:37.15 0.3 undecidable manual S 289 51.0156 102 0.75 59
IV.RM33.EHZ. 2020-09-30T04:18:35.69 0.6 undecidable manual S 211 45.4212 104 0.75 40
IV.FDMO.HHZ. 2020-09-30T04:18:33.29 0.3 undecidable manual S 300 38.8278 107 0.03 73
IV.CSP1.EHZ. 2020-09-30T04:18:32.37 0.3 undecidable manual S 317 35.2425 109 0.04 73
IV.CAMP.HHZ. 2020-09-30T04:18:32.98 0.6 undecidable manual S 192 36.741 108 0.27 47
IV.NRCA.HHZ. 2020-09-30T04:18:31.60 0.3 undecidable manual S 265 31.5462 112 0.18 72
IV.T1299.HNZ. 2020-09-30T04:18:31.68 0.3 undecidable manual S 215 30.747 113 0.47 68
IV.SMA1.EHZ. 2020-09-30T04:18:30.96 0.3 undecidable manual S 208 28.749 115 0.22 72
IV.MNTT.EHZ. 2020-09-30T04:18:30.12 0.3 undecidable manual S 19 23.6541 121 0.58 65
IV.TERO.HHZ. 2020-09-30T04:18:30.16 0.3 undecidable manual S 162 27.6501 116 -0.3 71
IV.VCEL.EHZ. 2020-09-30T04:18:30.27 0.3 undecidable manual P 152 58.5969 100 -0.38 66
IV.MC2.EHZ. 2020-09-30T04:18:30.55 0.3 undecidable manual S 283 25.9518 118 0.48 68
IV.SAP2.EHE. 2020-09-30T04:18:30.72 0.3 undecidable manual S 343 27.5502 116 0.28 70
IV.CESI.HHZ. 2020-09-30T04:18:29.41 0.1 undecidable manual P 289 51.0156 102 -0.1 94
IV.RM33.EHZ. 2020-09-30T04:18:28.72 0.1 undecidable manual P 211 45.4212 104 0.06 96
IV.OFFI.HHZ. 2020-09-30T04:18:28.64 0.6 undecidable manual S 61 17.1717 131 0.51 45
IV.MF5.EHZ. 2020-09-30T04:18:27.33 0.3 undecidable manual S 347 14.5743 137 -0.29 73
IV.CAMP.HHZ. 2020-09-30T04:18:27.09 0.3 undecidable manual P 192 36.741 108 -0.29 69
IV.MTRA.EHZ. 2020-09-30T04:18:27.40 0.3 undecidable manual S 217 14.2746 138 -0.16 74
IV.MMO1.HNE. 2020-09-30T04:18:27.43 0.3 undecidable manual S 287 14.7741 136 -0.23 73
IV.FDMO.HHZ. 2020-09-30T04:18:27.38 0.1 undecidable manual P 300 38.8278 107 -0.31 92
IV.TRTR.HHE. 2020-09-30T04:18:27.49 0.1 undecidable manual P 100 34.1436 110 0.5 88
IV.T1299.HNZ. 2020-09-30T04:18:26.55 0.1 undecidable manual P 215 30.747 113 0.04 99
IV.SMA1.EHZ. 2020-09-30T04:18:26.12 0.1 undecidable manual P 208 28.749 115 -0.12 97
IV.CSP1.EHZ. 2020-09-30T04:18:26.86 0.1 undecidable manual P 317 35.2425 109 -0.29 93
IV.NRCA.HHZ. 2020-09-30T04:18:26.53 0.1 undecidable manual P 265 31.5462 112 -0.1 97
IV.MC2.EHZ. 2020-09-30T04:18:25.83 0.1 undecidable manual P 283 25.9518 118 -0.02 100
IV.SAP2.EHE. 2020-09-30T04:18:25.90 0.3 undecidable manual P 343 27.5502 116 -0.16 73
IV.MNTT.EHZ. 2020-09-30T04:18:25.46 0.1 undecidable manual P 19 23.6541 121 -0.08 100
IV.TERO.HHZ. 2020-09-30T04:18:25.68 0.1 undecidable manual P 162 27.6501 116 -0.4 92
IV.MMO1.HNE. 2020-09-30T04:18:24.20 0.1 undecidable manual P 287 14.7741 136 -0.26 97
IV.OFFI.HHZ. 2020-09-30T04:18:24.60 0.1 undecidable manual P 61 17.1717 131 -0.13 100
IV.MF5.EHZ. 2020-09-30T04:18:24.14 0.1 undecidable manual P 347 14.5743 137 -0.3 97
IV.MTRA.EHZ. 2020-09-30T04:18:24.20 0.1 undecidable manual P 217 14.2746 138 -0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MF5.EHN. ML:1.2 0.00011999999999999999 0.36 AML other m 2020-09-30T04:18:27.53
IV.MTRA.EHE. ML:1.7 0.00033699999999999995 0.5 AML other m 2020-09-30T04:18:27.76
IV.MF5.EHE. ML:1.2 0.0001033 0.3 AML other m 2020-09-30T04:18:27.79
IV.MTRA.EHN. ML:1.3 0.000128 0.16 AML other m 2020-09-30T04:18:27.75
IV.MNTT.EHE. ML:1.7 0.000254 0.22 AML other m 2020-09-30T04:18:30.25
IV.TERO.HHN. ML:1.3 0.0000969 0.72 AML other m 2020-09-30T04:18:30.40
IV.TERO.HHE. ML:1.4 0.00010425000000000001 0.06 AML other m 2020-09-30T04:18:30.61
IV.SMA1.EHE. ML:1.5 0.00012859999999999998 0.42 AML other m 2020-09-30T04:18:31.30
IV.SMA1.EHN. ML:1.6 0.0001635 0.26 AML other m 2020-09-30T04:18:31.21
IV.MNTT.EHN. ML:1.6 0.00022399999999999997 1.82 AML other m 2020-09-30T04:18:31.92
IV.NRCA.HHE. ML:1.5 0.000132 1.08 AML other m 2020-09-30T04:18:32.13
IV.NRCA.HHN. ML:1.6 0.000161 0.16 AML other m 2020-09-30T04:18:32.14
IV.CSP1.EHN. ML:1.7 0.0001735 0.34 AML other m 2020-09-30T04:18:32.75
IV.CSP1.EHE. ML:1.6 0.0001505 0.4 AML other m 2020-09-30T04:18:32.81
IV.FDMO.HHN. ML:1.2 0.0000557 0.3 AML other m 2020-09-30T04:18:33.62
IV.FDMO.HHE. ML:1.2 0.00005715 0.54 AML other m 2020-09-30T04:18:33.78
IV.RM33.EHN. ML:1.3 0.000055 0.24 AML other m 2020-09-30T04:18:35.92
IV.RM33.EHE. ML:1.4 0.0000669 0.16 AML other m 2020-09-30T04:18:36.16
IV.CESI.HHN. ML:1.1 0.00003115 0.28 AML other m 2020-09-30T04:18:37.40
IV.CESI.HHE. ML:1.1 0.0000303 0.74 AML other m 2020-09-30T04:18:37.25
IV.APEC.HHE. ML:1.8 0.000050299999999999996 0.06 AML other m 2020-09-30T04:18:44.06
IV.APEC.HHN. ML:1.8 0.000047600000000000005 0.06 AML other m 2020-09-30T04:18:44.05
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