INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 17-02-2019 and time 15:40:53 (UTC) in region Collelongo (AQ)

A magnitude ML 1.2 earthquake occured in region: Collelongo (AQ), on

  • 17-02-2019 15:40:53 (UTC)
  • 17-02-2019 16:40:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.89, 13.58 at 15 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
Collelongo AQ 0 1233 1233
Villavallelonga AQ 4 919 2152
San Vincenzo Valle Roveto AQ 8 2347 4499
Trasacco AQ 9 6246 10745
Civita d'Antino AQ 9 979 11724
Ortucchio AQ 9 1860 13584
Balsorano AQ 10 3569 17153
Lecce nei Marsi AQ 10 1702 18855
Morino AQ 11 1448 20303
Gioia dei Marsi AQ 12 1989 22292
Luco dei Marsi AQ 12 6079 28371
Civitella Roveto AQ 13 3268 31639
San Benedetto dei Marsi AQ 14 3909 35548
Canistro AQ 15 995 36543
Bisegna AQ 15 223 36766
Pescina AQ 17 4133 40899
Pescosolido FR 17 1555 42454
Ortona dei Marsi AQ 17 542 42996
Capistrello AQ 18 5252 48248
Campoli Appennino FR 19 1725 49973
Sora FR 19 26144 76117
Pescasseroli AQ 20 2203 78320
Cerchio AQ 20 1635 79955
Collarmele AQ 20 894 80849

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km S of L'Aquila (69753 inhabitants)
65 Km E of Tivoli (56533 inhabitants)
70 Km E of Velletri (53303 inhabitants)
71 Km SW of Chieti (51815 inhabitants)
72 Km E of Guidonia Montecelio (88673 inhabitants)
73 Km NE of Latina (125985 inhabitants)
83 Km SW of Pescara (121014 inhabitants)
84 Km E of Aprilia (73446 inhabitants)
84 Km SW of Montesilvano (53738 inhabitants)
86 Km S of Teramo (54892 inhabitants)
91 Km E of Roma (2864731 inhabitants)
93 Km E of Pomezia (62966 inhabitants)
93 Km NE of Anzio (54211 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 1.2 2019-02-17
15:40:53
41.89 13.58 15 2019-02-17
15:49:47
Sala Sismica INGV-Roma 65631041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-17 15:40:53 ± 0.12
Latitude 41.89 ± 0.01
Longitude 13.58 ± 0.01
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65631041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 555
Semi-minor axis of confidence ellipse (meter) 376
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 65631041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-17 15:49:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2019-02-17T15:41:08.76 0.6 undecidable manual S 216 0.411 97 0.18 45
IV.LRP.EHZ. 2019-02-17T15:41:04.00 0.6 undecidable manual S 179 0.2419 105 0.34 45
IV.INTR.HHZ. 2019-02-17T15:41:04.46 0.3 undecidable manual S 63 0.2698 102 0.01 72
IV.GIUL.HHZ. 2019-02-17T15:41:02.22 0.1 undecidable manual P 216 0.411 97 -0.15 90
IV.PTQR.HHZ. 2019-02-17T15:41:02.16 0.3 undecidable manual S 315 0.188 112 0.02 73
IV.GUAR.HHZ. 2019-02-17T15:41:02.60 0.6 undecidable manual S 245 0.2212 107 -0.46 44
IV.GUAR.HHZ. 2019-02-17T15:40:59.21 0.1 undecidable manual P 245 0.2212 107 0.03 97
IV.LRP.EHZ. 2019-02-17T15:40:59.50 0.1 undecidable manual P 179 0.2419 105 -0.03 96
IV.INTR.HHZ. 2019-02-17T15:40:59.88 0.1 undecidable manual P 63 0.2698 102 -0.11 94
IV.PTQR.HHZ. 2019-02-17T15:40:58.82 0.1 undecidable manual P 315 0.188 112 0.17 95
IV.VVLD.HHZ. 2019-02-17T15:40:58.88 0.1 undecidable manual S 122 0.0369 161 -0.05 100
IV.VVLD.HHZ. 2019-02-17T15:40:56.90 0.1 undecidable manual P 122 0.0369 161 0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1.4 0.000305 0.1 AML other m 2019-02-17T15:40:59.08
IV.VVLD.HHN. ML:1.4 0.0002655 0.36 AML other m 2019-02-17T15:40:59.31
IV.PTQR.HHE. ML:1.1 8.405E-5 0.26 AML other m 2019-02-17T15:41:02.43
IV.PTQR.HHN. ML:1.1 8.215E-5 0.18 AML other m 2019-02-17T15:41:02.51
IV.GUAR.HHE. ML:1.1 6.465E-5 0.4 AML other m 2019-02-17T15:41:03.30
IV.GUAR.HHN. ML:1.1 6.905E-5 0.3 AML other m 2019-02-17T15:41:03.65
IV.LRP.EHN. ML:1.3 8.845E-5 0.26 AML other m 2019-02-17T15:41:04.90
IV.INTR.HHN. ML:1.2 6.395E-5 0.38 AML other m 2019-02-17T15:41:05.24
IV.LRP.EHE. ML:1.2 7.01E-5 0.18 AML other m 2019-02-17T15:41:05.19
IV.INTR.HHE. ML:0.8 3.02E-5 1.3 AML other m 2019-02-17T15:41:06.77
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download