Earthquake with magnitude of ML 1.5 on date 09-12-2021 and time 07:35:20 (UTC) in region 2 km SE Capitignano (AQ)

A magnitude ML 1.5 earthquake occured in region: 2 km SE Capitignano (AQ), on

  • 09-12-2021 07:35:20 (UTC)
  • 09-12-2021 08:35:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.504, 13.313 at 8 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
Capitignano AQ 2 665 665
Montereale AQ 6 2581 3246
Barete AQ 6 737 3983
Pizzoli AQ 8 4326 8309
Campotosto AQ 8 542 8851
Cagnano Amiterno AQ 9 1369 10220
Amatrice RI 14 2657 12877
Crognaleto TE 15 1297 14174
Borbona RI 15 617 14791
Scoppito AQ 15 3727 18518
Cittareale RI 18 482 19000
Posta RI 18 694 19694
L'Aquila AQ 18 69753 89447
Fano Adriano TE 19 296 89743
Pietracamela TE 20 271 90014

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
72 Km W of Chieti (51815 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
74 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km W of Pescara (121014 inhabitants)
96 Km NE of Roma (2864731 inhabitants)
100 Km E of Viterbo (67173 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 1.5 2021-12-09
07:35:20
42.5043 13.3133 8 2021-12-09
07:45:32
Sala Sismica INGV-Roma 98338901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-09 07:35:20 ± 0.17
Latitude 42.5043 ± 0.0090
Longitude 13.3133 ± 0.0110
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98338901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1151
Semi-minor axis of confidence ellipse (meter) 452
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 1150
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.59265
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 98338901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-09 07:45:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-12-09T07:35:41.67 0.3 undecidable manual S 352 0.5927 50 0.26 69
IV.MC2.EHZ. 2021-12-09T07:35:36.42 0.3 undecidable manual S 347 0.4173 50 0.21 72
IV.MMO1.EHE. 2021-12-09T07:35:35.53 0.1 undecidable manual P 0.3948 6.21 0
IV.NRCA.HHZ. 2021-12-09T07:35:34.13 0.6 undecidable manual S 336 0.3597 50 -0.39 47
IV.FAGN.HHZ. 2021-12-09T07:35:33.55 0.3 undecidable manual S 140 0.3112 50 0.49 69
IV.CSP1.EHZ. 2021-12-09T07:35:32.59 1.0 undecidable manual P 352 0.5927 50 -0.11 24
IV.TERO.HHZ. 2021-12-09T07:35:30.19 0.3 undecidable manual S 61 0.2446 107 -0.47 70
IV.MC2.EHZ. 2021-12-09T07:35:29.34 0.1 undecidable manual P 347 0.4173 50 -0.36 93
IV.LNSS.HHE. 2021-12-09T07:35:29.84 0.6 undecidable manual S 296 0.2239 109 -0.07 51
IV.FAGN.HHZ. 2021-12-09T07:35:28.33 0.1 undecidable manual P 140 0.3112 50 0.45 93
IV.NRCA.HHZ. 2021-12-09T07:35:28.29 0.3 negative manual P 336 0.3597 50 -0.44 69
IV.GIGS.HHN. 2021-12-09T07:35:28.19 0.6 undecidable manual S 105 0.1979 111 -0.78 42
IV.SMA1.EHZ. 2021-12-09T07:35:27.41 0.6 undecidable manual S 7 0.1268 121 0.9 40
IV.TERO.HHZ. 2021-12-09T07:35:26.17 1.0 undecidable manual P 61 0.2446 107 -0.32 24
IV.CAMP.HHZ. 2021-12-09T07:35:25.62 0.6 undecidable manual S 66 0.0773 135 0.65 45
IV.LNSS.HHE. 2021-12-09T07:35:25.87 0.1 undecidable manual P 296 0.2239 109 -0.19 100
IV.SMA1.EHZ. 2021-12-09T07:35:24.59 0.6 negative manual P 7 0.1268 121 0.49 48
IV.GIGS.HHN. 2021-12-09T07:35:24.92 0.1 undecidable manual P 105 0.1979 111 -0.6 91
IV.CAMP.HHZ. 2021-12-09T07:35:23.57 0.1 undecidable manual P 66 0.0773 135 0.36 99
IV.FIAM.HHZ. 2021-12-09T07:35:22.20 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.5 0.0003555 1.72 AML other m 2021-12-09T07:35:27.13
IV.SMA1.EHN. ML:1.3 0.000215 1.72 AML other m 2021-12-09T07:35:28.03
IV.TERO.HHE. ML:1.7 0.0002695 1 AML other m 2021-12-09T07:35:30.19
IV.TERO.HHN. ML:1.4 0.0001405 0.42 AML other m 2021-12-09T07:35:42.03
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