Earthquake with magnitude of ML 1.5 on date 22-09-2021 and time 02:02:41 (Italy) in region 3 km SE Massa d'Albe (AQ)

A magnitude ML 1.5 earthquake occured in region: 3 km SE Massa d'Albe (AQ), on

  • 22-09-2021 00:02:41 (UTC)
  • 22-09-2021 02:02:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.086, 13.41 at 11 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
Massa d'Albe AQ 3 1476 1476
Magliano de' Marsi AQ 4 3690 5166
Scurcola Marsicana AQ 6 2824 7990
Avezzano AQ 6 42515 50505
Ovindoli AQ 10 1227 51732
Celano AQ 12 11017 62749
Castellafiume AQ 12 1106 63855
Tagliacozzo AQ 13 6889 70744
Capistrello AQ 13 5252 75996
Cappadocia AQ 14 528 76524
Luco dei Marsi AQ 15 6079 82603
Aielli AQ 15 1475 84078
Cerchio AQ 16 1635 85713
Canistro AQ 16 995 86708
Rocca di Mezzo AQ 16 1526 88234
Sante Marie AQ 17 1166 89400
Trasacco AQ 18 6246 95646
Rocca di Cambio AQ 18 533 96179
Collarmele AQ 18 894 97073
Borgorose RI 19 4591 101664
Civitella Roveto AQ 19 3268 104932
San Benedetto dei Marsi AQ 20 3909 108841

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km S of L'Aquila (69753 inhabitants)
52 Km E of Tivoli (56533 inhabitants)
57 Km E of Guidonia Montecelio (88673 inhabitants)
68 Km SW of Teramo (54892 inhabitants)
69 Km NE of Velletri (53303 inhabitants)
69 Km W of Chieti (51815 inhabitants)
77 Km SW of Montesilvano (53738 inhabitants)
79 Km SW of Pescara (121014 inhabitants)
79 Km E of Roma (2864731 inhabitants)
80 Km NE of Latina (125985 inhabitants)
82 Km SE of Terni (111501 inhabitants)
83 Km NE of Aprilia (73446 inhabitants)
88 Km NE of Pomezia (62966 inhabitants)
96 Km NE of Anzio (54211 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 1.5 2021-09-22
00:02:41
42.0862 13.4097 11 2021-09-22
00:10:36
Sala Sismica INGV-Roma 95717291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 00:02:41 ± 0.07
Latitude 42.0862 ± 0.0045
Longitude 13.4097 ± 0.0073
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95717291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 556
Semi-minor axis of confidence ellipse (meter) 483
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.44966
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 95717291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 00:10:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2021-09-22T00:02:52.34 0.6 undecidable manual S 144 0.268 50 0.34 46
MN.AQU.HNN. 2021-09-22T00:02:52.02 0.3 undecidable manual S 359 0.268 50 0.04 74
IV.RM33.EHZ. 2021-09-22T00:02:51.17 0.3 undecidable manual P 341 0.4461 50 0.57 63
IV.FAGN.HHZ. 2021-09-22T00:02:50.50 0.3 undecidable manual S 36 0.2212 50 -0.09 74
IV.CAMP.HHN. 2021-09-22T00:02:50.54 0.3 undecidable manual P 360 0.4497 50 -0.11 70
IV.RCAV.EHE. 2021-09-22T00:02:50.16 0.6 undecidable manual P 235 0.42 50 0.02 48
IV.GIGS.HHZ. 2021-09-22T00:02:49.50 1.0 undecidable manual P 18 0.3858 50 -0.07 24
IV.INTR.HHZ. 2021-09-22T00:02:49.38 0.3 negative manual P 101 0.375 50 0 73
IV.CERT.HHZ. 2021-09-22T00:02:48.87 0.1 undecidable manual P 247 0.3462 50 -0.01 97
IV.T0110.HHZ. 2021-09-22T00:02:48.30 0.6 negative manual P 62 0.3067 50 0.08 48
IV.VVLD.HHZ. 2021-09-22T00:02:47.44 1.0 undecidable manual P 144 0.268 50 -0.12 24
MN.AQU.HNN. 2021-09-22T00:02:47.40 0.3 undecidable manual P 359 0.268 50 -0.14 72
IV.FIAM.HHZ. 2021-09-22T00:02:47.67 1.0 undecidable manual P 310 0.2824 50 -0.13 24
IV.GUAR.HNE. 2021-09-22T00:02:47.63 0.6 undecidable manual P 194 0.3004 50 -0.47 45
IV.FAGN.HHZ. 2021-09-22T00:02:46.62 0.1 negative manual P 36 0.2212 50 -0.12 97
IV.PTQR.HHZ. 2021-09-22T00:02:45.83 0.3 undecidable manual S 186 0.0648 146 -0.1 76
IV.PTQR.HHZ. 2021-09-22T00:02:44.19 0.1 positive manual P 186 0.0648 146 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTQR.HHN. ML:1.9 0.0012 1.78 AML other m 2021-09-22T00:02:45.02
IV.PTQR.HHE. ML:2 0.00141 1.86 AML other m 2021-09-22T00:02:45.03
IV.FAGN.HHN. ML:1.7 0.000305 0.3 AML other m 2021-09-22T00:02:53.22
IV.VVLD.HHN. ML:1.2 7.655E-5 0.2 AML other m 2021-09-22T00:02:53.82
IV.VVLD.HHE. ML:1.3 0.00010475 0.38 AML other m 2021-09-22T00:02:54.22
IV.FAGN.HHE. ML:1.8 0.000413 0.48 AML other m 2021-09-22T00:02:54.75
IV.T0110.HHN. ML:1.7 0.000188 0.24 AML other m 2021-09-22T00:02:54.83
IV.T0110.HHE. ML:1.6 0.0001725 0.44 AML other m 2021-09-22T00:02:55.35
IV.FIAM.HHE. ML:0.7 2.57E-5 0.46 AML other m 2021-09-22T00:02:55.94
IV.INTR.HHN. ML:1.5 0.0001115 0.68 AML other m 2021-09-22T00:02:56.42
IV.INTR.HHE. ML:1.4 8.48E-5 0.64 AML other m 2021-09-22T00:02:57.02
IV.FIAM.HHN. ML:0.7 2.68E-5 0.34 AML other m 2021-09-22T00:03:01.47
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