Earthquake with magnitude of ML 1.1 on date 02-10-2021 and time 20:36:34 (UTC) in region 7 km NW Montereale (AQ)

A magnitude ML 1.1 earthquake occured in region: 7 km NW Montereale (AQ), on

  • 02-10-2021 20:36:34 (UTC)
  • 02-10-2021 22:36:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.561, 13.184 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
Montereale AQ 7 2581 2581
Cittareale RI 7 482 3063
Borbona RI 7 617 3680
Posta RI 8 694 4374
Capitignano AQ 11 665 5039
Amatrice RI 12 2657 7696
Cagnano Amiterno AQ 12 1369 9065
Barete AQ 15 737 9802
Campotosto AQ 15 542 10344
Accumoli RI 16 667 11011
Micigliano RI 16 127 11138
Pizzoli AQ 17 4326 15464
Leonessa RI 18 2435 17899
Antrodoco RI 18 2588 20487
Borgo Velino RI 20 972 21459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
44 Km E of Terni (111501 inhabitants)
44 Km W of Teramo (54892 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
84 Km W of Chieti (51815 inhabitants)
85 Km W of Pescara (121014 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
94 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2021-10-02
20:36:34
42.5612 13.1835 12 2021-10-02
20:52:00
Sala Sismica INGV-Roma 96148411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-02 20:36:34 ± 0.07
Latitude 42.5612 ± 0.0045
Longitude 13.1835 ± 0.0037
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 96148411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 427
Semi-minor axis of confidence ellipse (meter) 216
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 354
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.35433
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96148411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-02 20:52:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-10-02T20:36:47.62 0.6 undecidable manual S 17 0.3543 92 0.21 47
IV.ARRO.EHZ. 2021-10-02T20:36:46.24 0.6 undecidable manual S 273 0.3076 93 0.19 47
IV.TERO.HHZ. 2021-10-02T20:36:46.09 0.3 undecidable manual S 79 0.3157 93 -0.18 70
IV.NRCA.HHZ. 2021-10-02T20:36:44.82 0.3 undecidable manual S 349 0.277 94 -0.31 70
IV.GAVE.EHZ. 2021-10-02T20:36:44.00 0.6 undecidable manual S 302 0.25 94 -0.33 47
IV.MTRA.EHZ. 2021-10-02T20:36:44.10 0.3 undecidable manual S 39 0.25 94 -0.25 70
IV.MMO1.EHZ. 2021-10-02T20:36:42.07 0.6 undecidable manual P 17 0.3543 92 0.13 47
IV.CAMP.HHZ. 2021-10-02T20:36:41.65 0.6 undecidable manual S 99 0.1682 100 -0.27 47
IV.SMA1.EHZ. 2021-10-02T20:36:41.01 0.3 undecidable manual S 58 0.1313 110 0.13 75
IV.ARRO.EHZ. 2021-10-02T20:36:41.14 0.3 negative manual P 273 0.3076 93 -0.01 73
IV.TERO.HHZ. 2021-10-02T20:36:41.34 0.3 positive manual P 79 0.3157 93 0.06 73
IV.LNSS.HHZ. 2021-10-02T20:36:40.16 0.3 undecidable manual S 292 0.1133 117 -0.22 73
IV.MTRA.EHZ. 2021-10-02T20:36:40.10 0.3 undecidable manual P 39 0.25 94 -0.07 73
IV.T1299.HNZ. 2021-10-02T20:36:40.18 0.6 undecidable manual S 45 0.1034 121 0.06 51
IV.NRCA.HHZ. 2021-10-02T20:36:40.53 0.3 undecidable manual P 349 0.277 94 -0.09 73
IV.GAVE.EHZ. 2021-10-02T20:36:40.23 0.3 undecidable manual P 302 0.25 94 0.07 73
IV.CAMP.HHZ. 2021-10-02T20:36:38.84 0.6 undecidable manual P 99 0.1682 100 0.08 50
IV.SMA1.EHZ. 2021-10-02T20:36:38.47 0.1 positive manual P 58 0.1313 110 0.3 96
IV.RM33.EHZ. 2021-10-02T20:36:38.96 0.3 undecidable manual S 156 0.0567 144 -0.15 73
IV.RM33.EHZ. 2021-10-02T20:36:37.27 0.6 positive manual P 156 0.0567 144 0.13 51
IV.LNSS.HHZ. 2021-10-02T20:36:37.96 0.1 positive manual P 292 0.1133 117 0.08 100
IV.T1299.HNZ. 2021-10-02T20:36:37.94 0.1 undecidable manual P 45 0.1034 121 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.2 0.00021 0.22 AML other m 2021-10-02T20:36:39.11
IV.RM33.EHE. ML:1.2 0.0002045 0.52 AML other m 2021-10-02T20:36:39.18
IV.LNSS.HHE. ML:1.2 0.000155 0.32 AML other m 2021-10-02T20:36:40.54
IV.LNSS.HHN. ML:1.2 0.0001395 0.18 AML other m 2021-10-02T20:36:40.39
IV.SMA1.EHN. ML:1 8.825E-5 0.44 AML other m 2021-10-02T20:36:41.32
IV.TERO.HHE. ML:1.9 0.0003165 0.48 AML other m 2021-10-02T20:36:41.37
IV.SMA1.EHE. ML:1.3 0.000197 0.56 AML other m 2021-10-02T20:36:41.43
IV.NRCA.HHE. ML:1.1 6.1E-5 1.84 AML other m 2021-10-02T20:36:44.93
IV.TERO.HHN. ML:0.8 2.48E-5 0.28 AML other m 2021-10-02T20:36:46.17
IV.NRCA.HHN. ML:0.9 4.17E-5 0.12 AML other m 2021-10-02T20:36:46.17
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