Earthquake with magnitude of ML 0.9 on date 26-10-2021 and time 14:55:17 (Italy) in region 5 km NW Campotosto (AQ)

A magnitude ML 0.9 earthquake occured in region: 5 km NW Campotosto (AQ), on

  • 26-10-2021 12:55:17 (UTC)
  • 26-10-2021 14:55:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.592, 13.328 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
Campotosto AQ 5 542 542
Amatrice RI 5 2657 3199
Capitignano AQ 8 665 3864
Montereale AQ 10 2581 6445
Accumoli RI 13 667 7112
Crognaleto TE 13 1297 8409
Cittareale RI 14 482 8891
Cortino TE 15 656 9547
Barete AQ 16 737 10284
Cagnano Amiterno AQ 17 1369 11653
Pizzoli AQ 17 4326 15979
Fano Adriano TE 18 296 16275
Borbona RI 18 617 16892
Rocca Santa Maria TE 20 537 17429

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km N of L'Aquila (69753 inhabitants)
32 Km W of Teramo (54892 inhabitants)
56 Km E of Terni (111501 inhabitants)
65 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
74 Km W of Chieti (51815 inhabitants)
74 Km W of Pescara (121014 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SE of Perugia (166134 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 0.9 2021-10-26
12:55:17
42.5922 13.3278 12 2021-10-26
13:05:37
Sala Sismica INGV-Roma 97003071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 12:55:17 ± 0.12
Latitude 42.5922 ± 0.0054
Longitude 13.3278 ± 0.0073
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 97003071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 213
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 620
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 97003071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 13:05:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2021-10-26T12:57:10.34 3.0 undecidable manual Sg 15.84 0
IV.CTI.HHZ. 2021-10-26T12:57:06.15 3.0 undecidable manual Sg 7.41 0
IV.TDS.HHZ. 2021-10-26T12:57:00.57 3.0 undecidable manual Sn -0.89 0
GU.RNCA.HHZ. 2021-10-26T12:57:00.32 3.0 undecidable manual Sn 0.25 0
CR.STON.BHZ. 2021-10-26T12:57:00.20 3.0 undecidable manual Sg 11.16 0
IV.ZEN8.EHZ. 2021-10-26T12:56:57.78 3.0 undecidable manual Sn 1.05 0
OX.MPRI.HHZ. 2021-10-26T12:56:54.77 3.0 undecidable manual Sn -3.83 0
IV.FREG.EHZ. 2021-10-26T12:56:53.10 3.0 undecidable manual Sn -1.58 0
IV.RESU.HHZ. 2021-10-26T12:56:34.40 3.0 undecidable manual Pn 1 0
IV.CADC.HNZ. 2021-10-26T12:56:26.68 3.0 negative manual Pg 11.93 0
IV.GIZZ.HHZ. 2021-10-26T12:56:26.62 3.0 negative manual Pn 3.62 0
IV.AGLI.HHZ. 2021-10-26T12:56:24.61 3.0 undecidable manual Pg 12.58 0
IV.JOPP.HHZ. 2021-10-26T12:56:24.41 3.0 negative manual Pn -1.53 0
IV.GRIS.EHZ. 2021-10-26T12:56:14.55 3.0 undecidable manual Pn 2.43 0
IV.FREG.EHZ. 2021-10-26T12:56:13.37 3.0 positive manual Pn 1.24 0
OX.MPRI.HHZ. 2021-10-26T12:56:11.46 3.0 undecidable manual Pn -2.87 0
IX.RSF3.HHZ.02 2021-10-26T12:56:00.41 3.0 negative manual Pg 6.08 0
IV.TST01.HHZ. 2021-10-26T12:55:59.88 3.0 undecidable manual S 0.88 0
IV.GATE.HHZ. 2021-10-26T12:55:49.99 3.0 negative manual P 3.08 0
IV.LPEL.HHZ. 2021-10-26T12:55:47.57 3.0 undecidable manual S -1.6 0
IV.CIMA.HNZ. 2021-10-26T12:55:32.80 3.0 undecidable manual Pg 0.06 0
IV.MC2.EHE. 2021-10-26T12:55:30.11 0.6 undecidable manual S 342 0.3345 92 0.51 43
IV.MMO1.EHE. 2021-10-26T12:55:28.64 0.3 undecidable manual S 360 0.3067 93 -0.13 72
IV.NRCA.HHZ. 2021-10-26T12:55:27.61 0.3 undecidable manual S 327 0.2878 93 -0.59 64
IV.TERO.HHZ. 2021-10-26T12:55:25.36 0.3 undecidable manual S 81 0.205 96 -0.4 68
IV.LNSS.HHZ. 2021-10-26T12:55:25.90 0.3 undecidable manual S 273 0.2113 96 -0.05 72
IV.MC2.EHE. 2021-10-26T12:55:24.70 0.1 undecidable manual P 342 0.3345 92 0.34 90
IV.MMO1.EHE. 2021-10-26T12:55:24.14 0.1 undecidable manual P 360 0.3067 93 0.26 92
IV.NRCA.HHZ. 2021-10-26T12:55:23.38 0.6 positive manual P 327 0.2878 93 -0.17 47
IV.CAMP.HHN. 2021-10-26T12:55:22.27 0.3 undecidable manual S 133 0.0818 131 -0.08 74
IV.TERO.HHZ. 2021-10-26T12:55:22.00 0.6 undecidable manual P 81 0.205 96 -0.15 48
IV.LNSS.HHZ. 2021-10-26T12:55:22.20 0.3 undecidable manual P 273 0.2113 96 -0.06 72
IV.SMA1.EHZ. 2021-10-26T12:55:21.42 0.3 undecidable manual S 8 0.0387 155 -0.15 75
IV.T1299.HNE. 2021-10-26T12:55:21.69 0.3 undecidable manual S 321 0.054 146 -0.1 75
IV.CAMP.HHN. 2021-10-26T12:55:20.40 0.1 undecidable manual P 133 0.0818 131 0.22 97
IV.RM33.EHZ. 2021-10-26T12:55:20.84 0.1 positive manual P 225 0.1178 114 0.15 99
IV.SMA1.EHZ. 2021-10-26T12:55:19.81 1.0 undecidable manual P 8 0.0387 155 0.08 25
IV.T1299.HNE. 2021-10-26T12:55:19.95 0.1 undecidable manual P 321 0.054 146 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:0.9 4.685E-5 1.84 AML other m 2021-10-26T12:55:26.01
IV.LNSS.HHN. ML:0.9 4.57E-5 0.74 AML other m 2021-10-26T12:55:26.87
IV.NRCA.HHN. ML:0.9 3.41E-5 0.92 AML other m 2021-10-26T12:55:28.37
IV.NRCA.HHE. ML:1.1 4.885E-5 1.18 AML other m 2021-10-26T12:55:28.19
IV.GATE.HHE. ML:2.6 0.0001495 0.18 AML other m 2021-10-26T12:56:00.88
IV.GATE.HHN. ML:2.5 0.0001175 0.2 AML other m 2021-10-26T12:56:17.73
IV.FREG.EHE. ML:3.3 0.000124 1.04 AML other m 2021-10-26T12:56:54.46
IV.FREG.EHN. ML:3.4 0.0001505 0.22 AML other m 2021-10-26T12:56:54.39
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