Earthquake with magnitude of ML 1.8 on date 11-11-2021 and time 19:13:49 (UTC) in region 7 km N Posta (RI)

A magnitude ML 1.8 earthquake occured in region: 7 km N Posta (RI), on

  • 11-11-2021 19:13:49 (UTC)
  • 11-11-2021 20:13:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.584, 13.08 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
Posta RI 7 694 694
Cittareale RI 8 482 1176
Borbona RI 9 617 1793
Leonessa RI 10 2435 4228
Monteleone di Spoleto PG 13 599 4827
Micigliano RI 15 127 4954
Montereale AQ 15 2581 7535
Cascia PG 16 3217 10752
Amatrice RI 18 2657 13409
Poggio Bustone RI 18 2055 15464
Cagnano Amiterno AQ 18 1369 16833
Antrodoco RI 18 2588 19421
Poggiodomo PG 19 117 19538
Accumoli RI 19 667 20205
Cantalice RI 19 2755 22960
Polino TR 19 233 23193
Capitignano AQ 20 665 23858
Rivodutri RI 20 1253 25111
Borgo Velino RI 20 972 26083

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Terni (111501 inhabitants)
37 Km NW of L'Aquila (69753 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
52 Km W of Teramo (54892 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
93 Km W of Chieti (51815 inhabitants)
94 Km W of Pescara (121014 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 1.8 2021-11-11
19:13:49
42.5843 13.0802 12 2021-11-11
19:20:56
Sala Sismica INGV-Roma 97401131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-11 19:13:49 ± 0.08
Latitude 42.5843 ± 0.0045
Longitude 13.0802 ± 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 97401131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 218
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 160
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.49013
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 97401131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-11 19:20:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHN. 2021-11-11T19:14:07.64 0.1 undecidable manual S 35 0.4901 92 1.38 55
IV.CESI.HNZ. 2021-11-11T19:14:05.05 0.3 undecidable manual S 343 0.4398 92 0.28 67
IV.CESX.HHZ. 2021-11-11T19:14:02.49 0.3 undecidable manual S 274 0.3633 92 -0.04 69
IV.TERO.HHZ. 2021-11-11T19:14:02.62 0.3 undecidable manual S 84 0.3876 92 -0.61 62
IV.MMO1.EHZ. 2021-11-11T19:14:02.50 0.3 undecidable manual S 30 0.3633 92 -0.01 71
IV.MC2.EHN. 2021-11-11T19:14:01.90 0.1 undecidable manual S 14 0.3363 93 0.18 92
IV.FIAM.HHZ. 2021-11-11T19:14:01.31 0.3 undecidable manual S 175 0.3175 93 0.16 69
IV.MTRA.HNE. 2021-11-11T19:13:59.94 0.1 undecidable manual S 53 0.2896 93 -0.39 89
IV.MF5.EHN. 2021-11-11T19:13:59.41 0.1 undecidable manual P 35 0.4901 92 0.31 86
IV.CESI.HNZ. 2021-11-11T19:13:58.31 0.3 undecidable manual P 343 0.4398 92 0.08 69
IV.NRCA.HHZ. 2021-11-11T19:13:58.75 0.3 undecidable manual S 6 0.25 94 -0.42 66
IV.ARRO.EHZ. 2021-11-11T19:13:58.59 0.3 undecidable manual S 269 0.2311 95 -0.02 71
IV.CAMP.HHZ. 2021-11-11T19:13:58.89 0.3 undecidable manual S 101 0.2473 94 -0.18 71
IV.SMA1.EHN. 2021-11-11T19:13:57.58 0.3 undecidable manual S 76 0.1934 97 0.09 71
IV.CESX.HHZ. 2021-11-11T19:13:57.03 0.6 undecidable manual P 274 0.3633 92 0.1 47
IV.TERO.HHZ. 2021-11-11T19:13:57.10 0.1 undecidable manual P 84 0.3876 92 -0.23 90
IV.MMO1.EHZ. 2021-11-11T19:13:56.85 0.1 undecidable manual P 30 0.3633 92 -0.07 93
IV.FIAM.HHZ. 2021-11-11T19:13:56.19 0.3 undecidable manual P 175 0.3175 93 0.05 71
IV.GAVE.EHZ. 2021-11-11T19:13:56.51 0.3 undecidable manual S 308 0.1745 100 -0.42 66
IV.MC2.EHN. 2021-11-11T19:13:56.51 0.3 undecidable manual P 14 0.3363 93 0.04 71
IV.MTRA.HNE. 2021-11-11T19:13:55.50 0.1 undecidable manual P 53 0.2896 93 -0.16 93
IV.CAMP.HHZ. 2021-11-11T19:13:54.93 0.1 undecidable manual P 101 0.2473 94 -0.01 97
IV.SMA1.EHN. 2021-11-11T19:13:54.23 0.1 undecidable manual P 76 0.1934 97 0.2 94
IV.NRCA.HHZ. 2021-11-11T19:13:54.92 0.3 undecidable manual P 6 0.25 94 -0.07 71
IV.ARRO.EHZ. 2021-11-11T19:13:54.75 0.1 undecidable manual P 269 0.2311 95 0.08 97
IV.LNSS.HHZ. 2021-11-11T19:13:53.58 0.1 undecidable manual S 302 0.0342 158 -0.04 100
IV.GAVE.EHZ. 2021-11-11T19:13:53.79 0.1 negative manual P 308 0.1745 100 0.09 97
IV.LNSS.HHZ. 2021-11-11T19:13:51.82 1.0 undecidable manual P 302 0.0342 158 0.03 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:2.3 0.002965 0.5 AML other m 2021-11-11T19:13:53.66
IV.LNSS.HNE. ML:2.3 0.00279 0.3 AML other m 2021-11-11T19:13:53.66
IV.LNSS.HHN. ML:2.2 0.002005 0.14 AML other m 2021-11-11T19:13:53.76
IV.LNSS.HNN. ML:2.1 0.00181 1.48 AML other m 2021-11-11T19:13:54.77
IV.GAVE.EHN. ML:2 0.000656 1.86 AML other m 2021-11-11T19:13:57.00
IV.GAVE.HNN. ML:1.7 0.0003525 1.18 AML other m 2021-11-11T19:13:57.00
IV.GAVE.EHE. ML:2.1 0.000953 1.12 AML other m 2021-11-11T19:13:57.01
IV.GAVE.HNE. ML:2.1 0.000887 1.12 AML other m 2021-11-11T19:13:57.01
IV.ARRO.EHE. ML:1.6 0.0002345 1.36 AML other m 2021-11-11T19:13:59.20
IV.ARRO.EHN. ML:1.8 0.0003635 0.18 AML other m 2021-11-11T19:13:59.74
IV.FIAM.HHN. ML:1.2 5.525E-5 1.6 AML other m 2021-11-11T19:14:01.03
IV.FIAM.HHE. ML:1.2 7.07E-5 1.6 AML other m 2021-11-11T19:14:01.07
IV.TERO.HHN. ML:1.6 0.0001115 1 AML other m 2021-11-11T19:14:02.43
IV.TERO.HHE. ML:1.6 0.000118 1.56 AML other m 2021-11-11T19:14:03.01
IV.MMO1.EHE. ML:1.6 0.0001435 1.76 AML other m 2021-11-11T19:14:04.99
IV.CESX.HHN. ML:1.4 8.475E-5 0.34 AML other m 2021-11-11T19:14:04.67
IV.MMO1.EHN. ML:1.7 0.0001575 0.56 AML other m 2021-11-11T19:14:05.65
IV.CESX.HHE. ML:1.4 8.5E-5 1.38 AML other m 2021-11-11T19:14:05.02
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