Earthquake with magnitude of ML 1.7 on date 21-11-2021 and time 13:26:20 (UTC) in region 4 km E Cittareale (RI)

A magnitude ML 1.7 earthquake occured in region: 4 km E Cittareale (RI), on

  • 21-11-2021 13:26:20 (UTC)
  • 21-11-2021 14:26:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.608, 13.212 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cittareale RI 4 482 482
Amatrice RI 7 2657 3139
Montereale AQ 10 2581 5720
Accumoli RI 10 667 6387
Capitignano AQ 12 665 7052
Borbona RI 12 617 7669
Posta RI 13 694 8363
Campotosto AQ 14 542 8905
Cagnano Amiterno AQ 17 1369 10274
Barete AQ 18 737 11011
Arquata del Tronto AP 20 1178 12189

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
84 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
100 Km NE of Roma (2864731 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.7 2021-11-21
13:26:20
42.6082 13.2117 12 2021-11-21
13:34:53
Sala Sismica INGV-Roma 97659011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-21 13:26:20 ± 0.07
Latitude 42.6082 ± 0.0036
Longitude 13.2117 ± 0.0061
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97659011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 549
Semi-minor axis of confidence ellipse (meter) 104
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 254
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48384
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 97659011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-21 13:34:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-11-21T13:26:37.03 0.3 undecidable manual S 359 0.4838 91 0.23 69
IV.GUMA.HHZ. 2021-11-21T13:26:37.18 0.3 undecidable manual S 11 0.4632 91 0.98 54
IV.MF5.EHZ. 2021-11-21T13:26:35.90 0.3 undecidable manual S 26 0.4209 91 0.96 56
IV.FIAM.HNE. 2021-11-21T13:26:32.92 0.3 undecidable manual S 192 0.3471 92 0.17 71
IV.T0110.HHZ. 2021-11-21T13:26:31.09 3.0 positive manual P -0.03 0
MN.AQU.HNN. 2021-11-21T13:26:31.72 0.3 undecidable manual S 151 0.2914 92 0.62 64
IV.MC2.EHZ. 2021-11-21T13:26:31.60 0.3 undecidable manual S 357 0.304 92 0.13 73
IV.GIGS.HHE. 2021-11-21T13:26:31.19 0.3 undecidable manual S 120 0.3076 92 -0.4 69
IV.ASSB.HHZ. 2021-11-21T13:26:31.56 3.0 positive manual P -0.01 0
IV.TERO.HHZ. 2021-11-21T13:26:30.51 0.3 undecidable manual S 87 0.2887 92 -0.52 66
IV.CESX.HHZ. 2021-11-21T13:26:29.18 3.0 undecidable manual P -0.01 0
IV.CESI.HHZ. 2021-11-21T13:26:29.05 0.3 undecidable manual P 331 0.456 91 -0.18 70
IV.NRCA.HHZ. 2021-11-21T13:26:29.02 0.3 undecidable manual S 342 0.2365 93 -0.46 69
IV.CSP1.EHZ. 2021-11-21T13:26:29.53 0.1 undecidable manual P 359 0.4838 91 -0.17 93
IV.GAVE.EHZ. 2021-11-21T13:26:29.67 0.3 undecidable manual S 290 0.2482 93 -0.15 74
IV.FAGN.HHE. 2021-11-21T13:26:29.21 0.6 undecidable manual P 141 0.4389 91 0.28 46
IV.GUMA.HHZ. 2021-11-21T13:26:29.74 0.1 undecidable manual P 11 0.4632 91 0.38 90
IV.MF5.EHZ. 2021-11-21T13:26:28.96 0.1 undecidable manual P 26 0.4209 91 0.33 92
IV.FDMO.HHZ. 2021-11-21T13:26:28.37 0.3 undecidable manual P 348 0.438 91 -0.55 64
IV.CAMP.HHE. 2021-11-21T13:26:27.19 0.3 undecidable manual S 116 0.1619 99 -0.1 75
IV.MTRA.EHZ. 2021-11-21T13:26:27.95 0.3 undecidable manual S 42 0.2014 95 -0.49 68
IV.FIAM.HNE. 2021-11-21T13:26:27.53 0.3 undecidable manual P 192 0.3471 92 0.17 71
IV.LNSS.HHZ. 2021-11-21T13:26:26.28 0.6 undecidable manual S 268 0.1259 109 0.03 51
IV.TERO.HHZ. 2021-11-21T13:26:26.09 0.1 undecidable manual P 87 0.2887 92 -0.28 94
IV.MC2.EHZ. 2021-11-21T13:26:26.55 0.3 negative manual P 357 0.304 92 -0.08 74
MN.AQU.HNN. 2021-11-21T13:26:26.23 0.6 undecidable manual P 151 0.2914 92 -0.18 48
IV.GIGS.HHE. 2021-11-21T13:26:26.39 0.1 undecidable manual P 120 0.3076 92 -0.31 94
IV.ARRO.EHZ. 2021-11-21T13:26:26.91 3.0 negative manual P 0.04 0
IV.GAVE.EHZ. 2021-11-21T13:26:25.59 0.1 undecidable manual P 290 0.2482 93 -0.09 100
IV.RM33.EHZ. 2021-11-21T13:26:25.59 0.3 undecidable manual S 179 0.0989 121 0.06 76
IV.SMA1.EHZ. 2021-11-21T13:26:25.59 0.3 undecidable manual S 76 0.0935 124 0.2 75
IV.NRCA.HHZ. 2021-11-21T13:26:25.19 0.1 negative manual P 342 0.2365 93 -0.29 95
IV.CAMP.HHE. 2021-11-21T13:26:24.26 0.3 undecidable manual P 116 0.1619 99 0.05 76
IV.MTRA.EHZ. 2021-11-21T13:26:24.67 0.1 positive manual P 42 0.2014 95 -0.21 97
IV.SMA1.EHZ. 2021-11-21T13:26:23.36 0.1 positive manual P 76 0.0935 124 0.24 99
IV.LNSS.HHZ. 2021-11-21T13:26:23.65 0.6 undecidable manual P 268 0.1259 109 0.03 51
IV.RM33.EHZ. 2021-11-21T13:26:23.38 0.1 undecidable manual P 179 0.0989 121 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNN. ML:2 0.0010810955 0.0768 AML other m 2021-11-21T13:26:25.65
IV.RM33.EHN. ML:2 0.00101647205 0.0832 AML other m 2021-11-21T13:26:25.64
IV.SMA1.EHN. ML:1.6 0.0004419942 0.16 AML other m 2021-11-21T13:26:25.88
IV.RM33.EHE. ML:2.1 0.001295 0.08 AML other m 2021-11-21T13:26:25.87
IV.RM33.HNE. ML:2.1 0.00126 0.08 AML other m 2021-11-21T13:26:25.87
IV.SMA1.EHE. ML:1.8 0.0007431741 0.2048 AML other m 2021-11-21T13:26:25.73
IV.LNSS.HHN. ML:1.9 0.0008352847 0.1216 AML other m 2021-11-21T13:26:26.52
IV.LNSS.HHE. ML:2.2 0.00137 0.16 AML other m 2021-11-21T13:26:26.40
IV.MTRA.HNE. ML:1.6 0.00023151995 0.2688 AML other m 2021-11-21T13:26:29.08
IV.MTRA.EHE. ML:1.5 0.00021749885 0.2816 AML other m 2021-11-21T13:26:28.94
IV.MTRA.HNN. ML:1.8 0.00045 0.22 AML other m 2021-11-21T13:26:28.42
IV.MTRA.EHN. ML:1.8 0.00044 0.22 AML other m 2021-11-21T13:26:28.31
IV.NRCA.HHN. ML:1.6 0.0002265 0.16 AML other m 2021-11-21T13:26:29.34
IV.GAVE.EHN. ML:1.9 0.0004515 0.26 AML other m 2021-11-21T13:26:29.87
IV.GAVE.EHE. ML:2 0.000504 0.14 AML other m 2021-11-21T13:26:29.90
IV.NRCA.HHE. ML:1.7 0.0002525 0.12 AML other m 2021-11-21T13:26:30.54
IV.TERO.HHN. ML:1.7 0.0002146366 0.0832 AML other m 2021-11-21T13:26:30.56
IV.ARRO.EHN. ML:1.2 6.649548E-5 0.2432 AML other m 2021-11-21T13:26:32.64
IV.MC2.EHE. ML:1.9 0.0003595 0.32 AML other m 2021-11-21T13:26:33.47
IV.ARRO.EHE. ML:1.1 4.5860495E-5 0.1408 AML other m 2021-11-21T13:26:34.47
IV.MC2.EHN. ML:1.8 0.000235 0.3 AML other m 2021-11-21T13:26:34.37
IV.FDMO.HHN. ML:1.1 3.45E-5 0.18 AML other m 2021-11-21T13:26:37.25
IV.CESX.HHE. ML:1.2 3.9096655E-5 0.2368 AML other m 2021-11-21T13:26:37.32
IV.GUMA.HHE. ML:0 0.00049400005 0.3008 AML other m 2021-11-21T13:26:37.38
IV.GUMA.HHN. ML:0 0.0002441076 0.3008 AML other m 2021-11-21T13:26:37.63
IV.CESX.HHN. ML:1.2 4.7175755E-5 0.2432 AML other m 2021-11-21T13:26:37.22
IV.CESI.HHE. ML:1 2.415921E-5 0.1344 AML other m 2021-11-21T13:26:38.55
IV.CSP1.EHE. ML:1.5 7.73E-5 0.36 AML other m 2021-11-21T13:26:39.43
IV.CSP1.EHN. ML:1.5 7.304035E-5 0.2624 AML other m 2021-11-21T13:26:37.99
IV.CESI.HHN. ML:1.2 3.89E-5 0.2 AML other m 2021-11-21T13:26:40.75
IV.ASSB.HHN. ML:1.1 2.698296E-5 0.1408 AML other m 2021-11-21T13:26:42.13
IV.T0110.HHN. ML:1.2 3.1E-5 1.16 AML other m 2021-11-21T13:26:45.67
IV.ASSB.HHE. ML:0.9 1.5757454E-5 0.2816 AML other m 2021-11-21T13:26:45.86
IV.T0110.HHE. ML:1.3 3.505E-5 1.52 AML other m 2021-11-21T13:26:46.15
IV.LNSS.HNE. ML:2.1 0.001278193 0.1728 AML other m 2021-11-21T13:26:26.40
IV.LNSS.HNN. ML:1.9 0.00076254515 0.1216 AML other m 2021-11-21T13:26:26.52
IV.NRCA.HNE. ML:1.6 0.00023540265 0.1216 AML other m 2021-11-21T13:26:30.54
IV.NRCA.HNN. ML:1.6 0.0002373467 0.1728 AML other m 2021-11-21T13:26:29.34
IV.GAVE.HNN. ML:1.5 0.0001584182665 0.2816 AML other m 2021-11-21T13:26:30.24
IV.TERO.HNE. ML:1.5 0.00012328713 0.0704 AML other m 2021-11-21T13:26:30.77
IV.TERO.HNN. ML:1.7 0.00023895437 0.0896 AML other m 2021-11-21T13:26:30.56
IV.GUMA.HNE. ML:2.2 0.00041386435 0.2688 AML other m 2021-11-21T13:26:37.52
IV.GUMA.HNN. ML:2.1 0.00029794605 0.2304 AML other m 2021-11-21T13:26:37.34
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