Earthquake with magnitude of ML 0.7 on date 21-11-2021 and time 09:53:42 (Italy) in region 5 km W Accumoli (RI)

A magnitude ML 0.7 earthquake occured in region: 5 km W Accumoli (RI), on

  • 21-11-2021 08:53:42 (UTC)
  • 21-11-2021 09:53:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7090, 13.1960 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Accumoli RI 5 667 667
Cittareale RI 10 482 1149
Arquata del Tronto AP 11 1178 2327
Amatrice RI 12 2657 4984
Norcia PG 13 4957 9941
Cascia PG 15 3217 13158
Montegallo AP 19 523 13681
Acquasanta Terme AP 19 2916 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Terni (111501 inhabitants)
49 Km SE of Foligno (57155 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km NE of Tivoli (56533 inhabitants)
89 Km W of Chieti (51815 inhabitants)
95 Km E of Viterbo (67173 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 0.7 2021-11-21
08:53:42
42.7087 13.1955 9 2022-03-30
13:04:36
Bollettino Sismico Italiano INGV 100787601
Reviewed
Rev100
ML 0.7 2021-11-21
08:53:43
42.7133 13.1497 7 2021-11-21
09:01:04
Sala Sismica INGV-Roma 97650691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-21 08:53:42 ± 0.26
Latitude 42.7087 ± 0.0036
Longitude 13.1955 ± 0.0086
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100787601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 646
Semi-minor axis of confidence ellipse (meter) 253
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22213
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 100787601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-08 16:50:20

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97650691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-21 09:01:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSSA.HHZ. 2021-11-21T08:55:21.36 3.0 undecidable manual Sg 18.25 0
SI.BOSI.HHZ. 2021-11-21T08:55:20.38 3.0 undecidable manual Sn 0.71 0
GU.BURY.HHZ. 2021-11-21T08:54:55.86 3.0 negative manual Pg 19.59 0
TV.GMB1.HHZ. 2021-11-21T08:54:43.07 3.0 positive manual Pg 5.43 0
IV.SGAL.EHZ. 2021-11-21T08:54:32.20 3.0 undecidable manual Pg 8.05 0
IV.QLNO.HHZ. 2021-11-21T08:54:29.69 3.0 undecidable manual Pn -1.05 0
IV.IFIL.HHZ. 2021-11-21T08:54:24.01 3.0 positive manual Pn -5.32 0
IV.BAG8.EHZ. 2021-11-21T08:54:22.67 3.0 undecidable manual Pn -3.21 0
NI.POLC.HHZ. 2021-11-21T08:54:18.89 3.0 positive manual Pn -0.4 0
IV.GRIS.EHZ. 2021-11-21T08:54:17.35 3.0 undecidable manual Pn -0.53 0
IV.CMPR.HHZ. 2021-11-21T08:54:11.34 3.0 undecidable manual Pg 3.12 0
IV.FIR.HHZ. 2021-11-21T08:54:09.81 3.0 undecidable manual Pg 8.46 0
IT.FIE.HGZ. 2021-11-21T08:54:03.99 3.0 positive manual Pg 2.76 0
IX.SRN3.HHZ.02 2021-11-21T08:54:03.75 3.0 undecidable manual Pn -3.15 0
IV.SRES.HHZ. 2021-11-21T08:54:01.91 3.0 undecidable manual S -1.13 0
IV.CPGN.EHZ. 2021-11-21T08:53:51.80 3.0 undecidable manual Pn -1.25 0
IV.MC2.EHE. 2021-11-21T08:53:51.40 0.6 undecidable manual S 359 22.4553 112 0.18 48
IV.MMO1.EHZ. 2021-11-21T08:53:51.21 0.6 undecidable manual S 27 23.6541 111 -0.4 45
IV.TOLF.HHZ. 2021-11-21T08:53:51.79 3.0 undecidable manual P -0.42 0
IV.GAVE.EHZ. 2021-11-21T08:53:51.85 0.3 undecidable manual S 266 24.6531 110 -0.06 73
IV.APEC.HHZ. 2021-11-21T08:53:50.55 3.0 negative manual P 0.48 0
IV.RM33.HNZ. 2021-11-21T08:53:50.97 0.6 undecidable manual S 176 22.2555 112 -0.16 48
IV.LNSS.HHZ. 2021-11-21T08:53:49.87 0.3 undecidable manual S 227 17.2716 117 0.3 70
IV.MMO1.EHZ. 2021-11-21T08:53:48.39 0.3 undecidable manual P 27 23.6541 111 0.49 67
IV.NRCA.HHZ. 2021-11-21T08:53:48.88 0.3 undecidable manual S 334 15.3735 120 -0.1 74
IV.GAVE.EHZ. 2021-11-21T08:53:47.87 0.3 undecidable manual P 266 24.6531 110 -0.2 71
IV.RM33.HNZ. 2021-11-21T08:53:47.50 0.3 undecidable manual P 176 22.2555 112 -0.12 72
IV.MC2.EHE. 2021-11-21T08:53:47.61 0.6 undecidable manual P 359 22.4553 112 -0.06 49
IV.NRCA.HHZ. 2021-11-21T08:53:46.37 0.1 undecidable manual P 334 15.3735 120 -0.01 100
IV.LNSS.HHZ. 2021-11-21T08:53:46.74 0.1 undecidable manual P 227 17.2716 117 0.02 99
IV.CRTC.HHZ. 2021-11-21T08:53:43.77 3.0 negative manual P -5.41 0
IV.COR1.EHZ. 2021-11-21T08:53:42.17 3.0 positive manual P -4.78 0
IV.MMUR.HNZ. 2021-11-21T08:53:41.57 3.0 undecidable manual P -2.54 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.0 0.00010664999999999999 0.12 AML other m 2021-11-21T08:53:49.08
IV.NRCA.HHE. ML:1.0 0.00009470000000000001 0.14 AML other m 2021-11-21T08:53:49.22
IV.LNSS.HHE. ML:0.6 0.00003735152 0.1408 AML other m 2021-11-21T08:53:49.90
IV.LNSS.HHN. ML:0.7 0.0000455 0.66 AML other m 2021-11-21T08:53:50.58
IV.GAVE.EHN. ML:0.5 0.000020752002000000003 0.1216 AML other m 2021-11-21T08:53:52.11
IV.GAVE.EHE. ML:0.6 0.000026099999999999997 0.32 AML other m 2021-11-21T08:53:52.81
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