Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 04-10-2021 and time 04:04:21 (Italy) in region 5 km W Campotosto (AQ)

A magnitude ML 1.0 earthquake occured in region: 5 km W Campotosto (AQ), on

  • 04-10-2021 02:04:21 (UTC)
  • 04-10-2021 04:04:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5740, 13.3120 at 12 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
Campotosto AQ 5 542 542
Capitignano AQ 6 665 1207
Amatrice RI 7 2657 3864
Montereale AQ 8 2581 6445
Cittareale RI 13 482 6927
Barete AQ 14 737 7664
Crognaleto TE 14 1297 8961
Accumoli RI 15 667 9628
Cagnano Amiterno AQ 15 1369 10997
Pizzoli AQ 15 4326 15323
Borbona RI 16 617 15940
Cortino TE 17 656 16596
Posta RI 19 694 17290
Fano Adriano TE 19 296 17586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
65 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
74 Km W of Chieti (51815 inhabitants)
75 Km W of Pescara (121014 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SE 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
Reviewed
Rev100 		ML 1.0 2021-10-04
02:04:21		 42.5738 13.3123 13 2021-10-04
02:16:08		 Sala Sismica INGV-Roma 96186101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-04 02:04:21 ± 0.08
Latitude 42.5738 ± 0.0036
Longitude 13.3123 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96186101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 349
Semi-minor axis of confidence ellipse (meter) 179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 340
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32915
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 96186101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-04 02:16:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2021-10-04T02:07:10.26 3.0 undecidable manual Sg 15.26 0
ST.RONC.EHZ. 2021-10-04T02:06:17.78 3.0 undecidable manual Sg 9.31 0
IV.MTGR.HHZ. 2021-10-04T02:06:14.64 3.0 undecidable manual Sn -5.31 0
GU.CIRO.HHZ. 2021-10-04T02:05:50.89 3.0 undecidable manual Pg 16.620001 0
IX.SCL3.EHZ.02 2021-10-04T02:05:36.18 3.0 undecidable manual Sg 1.35 0
OX.VARN.HHZ. 2021-10-04T02:05:26.94 3.0 positive manual Pg 10.82 0
IV.SELL.HHZ. 2021-10-04T02:05:23.60 3.0 undecidable manual Pn -2.61 0
IV.FIR.HHZ. 2021-10-04T02:05:07.68 3.0 undecidable manual Sn -8.8 0
IV.MMUR.HNZ. 2021-10-04T02:04:58.72 3.0 undecidable manual S 0.4 0
GU.GSCL.HHZ. 2021-10-04T02:04:55.55 3.0 undecidable manual Pn -5.55 0
OT.OT17.EHZ. 2021-10-04T02:04:54.96 3.0 negative manual Pg 2.06 0
IV.GAVE.EHZ. 2021-10-04T02:04:33.71 0.6 undecidable manual S 291 36.5412 93 -0.1 48
IV.MMO1.EHZ. 2021-10-04T02:04:33.75 0.6 undecidable manual S 2 36.1416 93 0.06 48
IV.NRCA.HHZ. 2021-10-04T02:04:32.71 0.6 undecidable manual S 331 33.0447 94 -0.16 48
IV.LNSS.HHZ. 2021-10-04T02:04:30.13 0.6 undecidable manual S 278 22.4553 98 0.07 49
IV.GAVE.EHZ. 2021-10-04T02:04:28.60 0.3 undecidable manual P 291 36.5412 93 -0.04 74
IV.MMO1.EHZ. 2021-10-04T02:04:28.18 1.0 undecidable manual P 2 36.1416 93 -0.4 23
IV.RM33.EHZ. 2021-10-04T02:04:27.04 0.6 undecidable manual S 228 10.7781 126 -0.09 50
IV.NRCA.HHZ. 2021-10-04T02:04:27.97 0.3 undecidable manual P 331 33.0447 94 -0.13 73
IV.CAMP.HHE. 2021-10-04T02:04:26.57 0.6 undecidable manual S 118 8.9799 133 -0.19 49
IV.T1299.EHN. 2021-10-04T02:04:26.38 0.6 undecidable manual S 340 7.0929 141 -0.05 51
IV.SMA1.EHZ. 2021-10-04T02:04:26.37 0.6 undecidable manual S 17 6.5934 144 0.04 52
IV.LNSS.HHZ. 2021-10-04T02:04:26.48 0.6 undecidable manual P 278 22.4553 98 0 50
IV.SMA1.EHZ. 2021-10-04T02:04:24.50 0.1 positive manual P 17 6.5934 144 0.17 100
IV.RM33.EHZ. 2021-10-04T02:04:24.95 0.3 positive manual P 228 10.7781 126 0.17 75
IV.CAMP.HHE. 2021-10-04T02:04:24.64 0.6 undecidable manual P 118 8.9799 133 0.07 51
IV.T1299.EHN. 2021-10-04T02:04:24.45 0.6 undecidable manual P 340 7.0929 141 0.07 51
IV.FAGN.HHZ. 2021-10-04T02:04:22.38 3.0 positive manual P -7.92 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:0.9 0.00008659999999999999 0.12 AML other m 2021-10-04T02:04:27.30
IV.RM33.EHN. ML:0.6 0.00004625 1.02 AML other m 2021-10-04T02:04:27.25
IV.NRCA.HHN. ML:1.1 0.00005231261 0.0992 AML other m 2021-10-04T02:04:33.40
IV.NRCA.HHE. ML:1.0 0.000040228664999999994 0.08 AML other m 2021-10-04T02:04:33.07
IV.FAGN.HHE. ML:1.0 0.000027672055000000003 0.3008 AML other m 2021-10-04T02:04:29.26
IV.FAGN.HHN. ML:0.8 0.000019154224999999995 0.28 AML other m 2021-10-04T02:04:29.62
IV.SMA1.EHE. ML:1.2 0.00021202495 0.16 AML other m 2021-10-04T02:04:26.69
IV.SMA1.EHN. ML:0.8 0.00009078449999999998 0.1792 AML other m 2021-10-04T02:04:26.00
IV.RM33.HNE. ML:1.1 0.00012683853000000002 0.1408 AML other m 2021-10-04T02:04:27.30
IV.RM33.HNN. ML:0.9 0.00007864334000000001 0.48 AML other m 2021-10-04T02:04:24.55
IV.LNSS.HHE. ML:0.9 0.000043950290000000004 0.12 AML other m 2021-10-04T02:04:30.28
IV.LNSS.HHN. ML:0.6 0.00002599818 0.2608 AML other m 2021-10-04T02:04:31.35
IV.NRCA.HNE. ML:1.3 0.00009182808000000001 0.7408 AML other m 2021-10-04T02:04:30.91
IV.NRCA.HNN. ML:1.6 0.0001856786 0.8688 AML other m 2021-10-04T02:04:38.98
IV.GAVE.HNE. ML:1.4 0.00010046579 0.5504 AML other m 2021-10-04T02:04:41.06
IV.GAVE.HNN. ML:1.7 0.0002029026 0.6992 AML other m 2021-10-04T02:04:37.52
IV.GAVE.EHE. ML:0.6 0.0000138317605 0.1216 AML other m 2021-10-04T02:04:34.08
IV.GAVE.EHN. ML:0.9 0.000030278505 0.2 AML other m 2021-10-04T02:04:34.02
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