Earthquake with magnitude of ML 1.1 on date 22-02-2020 and time 05:48:37 (Italy) in region 6 km E Villavallelonga (AQ)

A magnitude ML 1.1 earthquake occured in region: 6 km E Villavallelonga (AQ), on

  • 22-02-2020 04:48:37 (UTC)
  • 22-02-2020 05:48:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.86, 13.7 at 13 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
Villavallelonga AQ 6 919 919
Lecce nei Marsi AQ 8 1702 2621
Bisegna AQ 8 223 2844
Pescasseroli AQ 10 2203 5047
Collelongo AQ 10 1233 6280
Gioia dei Marsi AQ 10 1989 8269
Ortucchio AQ 11 1860 10129
Pescosolido FR 13 1555 11684
Balsorano AQ 13 3569 15253
Campoli Appennino FR 14 1725 16978
Villalago AQ 14 568 17546
Opi AQ 14 420 17966
San Vincenzo Valle Roveto AQ 15 2347 20313
Ortona dei Marsi AQ 16 542 20855
Scanno AQ 16 1847 22702
Sora FR 17 26144 48846
Trasacco AQ 17 6246 55092
Anversa degli Abruzzi AQ 17 341 55433
San Benedetto dei Marsi AQ 17 3909 59342
Broccostella FR 18 2741 62083
Posta Fibreno FR 19 1139 63222
Pescina AQ 19 4133 67355
Civita d'Antino AQ 19 979 68334
San Donato Val di Comino FR 20 2107 70441
Alvito FR 20 2713 73154

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km SE of L'Aquila (69753 inhabitants)
67 Km SW of Chieti (51815 inhabitants)
75 Km E of Tivoli (56533 inhabitants)
79 Km E of Velletri (53303 inhabitants)
79 Km NE of Latina (125985 inhabitants)
80 Km SW of Pescara (121014 inhabitants)
82 Km SW of Montesilvano (53738 inhabitants)
82 Km E of Guidonia Montecelio (88673 inhabitants)
89 Km S of Teramo (54892 inhabitants)
92 Km E of Aprilia (73446 inhabitants)
100 Km E 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 1.1 2020-02-22
04:48:37
41.86 13.7 13 2020-02-22
07:15:26
Sala Sismica INGV-Roma 76714651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-22 04:48:37 ± 0.06
Latitude 41.86 ± 0.00
Longitude 13.70 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76714651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 36
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.54049
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 76714651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-22 07:15:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.MUGIO.HHZ. 2020-02-22T04:49:58.53 3.0 undecidable manual Pn 9.16 0
RF.GEPF.HHZ. 2020-02-22T04:49:52.66 3.0 positive manual Pg 13.37 0
IV.EUCT.HNZ. 2020-02-22T04:49:50.33 3.0 undecidable manual Pn 9.05 0
IV.VARE.HHZ. 2020-02-22T04:49:50.92 3.0 undecidable manual Pn 0.47 0
IV.FIR.HHZ. 2020-02-22T04:49:46.98 3.0 undecidable manual Sn -0.07 0
IV.IFIL.HHZ. 2020-02-22T04:49:43.60 3.0 undecidable manual Sn -5.37 0
IV.SALB.HHZ. 2020-02-22T04:49:39.24 3.0 undecidable manual Sn -0.61 0
IV.ROSPO.HHZ. 2020-02-22T04:49:10.17 3.0 undecidable manual Sg 2.92 0
IV.CERT.HHZ. 2020-02-22T04:48:55.65 0.3 undecidable manual S 280 0.5405 92 0.07 69
IV.CERT.HHZ. 2020-02-22T04:48:47.54 0.1 undecidable manual P 280 0.5405 92 -0.23 89
IV.LRP.EHZ. 2020-02-22T04:48:46.44 0.3 undecidable manual S 201 0.2302 98 0.03 74
IV.PAOL.HHZ. 2020-02-22T04:48:45.92 3.0 undecidable manual Pg 0.9 0
IV.INTR.HHZ. 2020-02-22T04:48:45.88 0.3 undecidable manual S 45 0.214 99 -0.06 74
IV.CPOZ.HHZ. 2020-02-22T04:48:43.78 3.0 positive manual P -0.07 0
IV.POFI.HHN. 2020-02-22T04:48:43.98 0.3 undecidable manual S 176 0.1448 111 0.04 76
IV.PTRJ.HNZ. 2020-02-22T04:48:43.15 3.0 undecidable manual P -0.12 0
IT.OPI.HGE. 2020-02-22T04:48:43.37 0.3 undecidable manual S 131 0.1295 116 -0.17 74
IV.LRP.EHZ. 2020-02-22T04:48:42.40 0.1 undecidable manual P 201 0.2302 98 -0.08 98
IV.INTR.HHZ. 2020-02-22T04:48:42.31 0.1 undecidable manual P 45 0.214 99 0.11 97
IV.VVLD.HHZ. 2020-02-22T04:48:41.80 0.3 undecidable manual S 278 0.0567 147 -0.11 75
IV.POFI.HHN. 2020-02-22T04:48:41.12 0.1 undecidable manual P 176 0.1448 111 0.07 100
IV.VVLD.HHZ. 2020-02-22T04:48:40.12 0.1 undecidable manual P 278 0.0567 147 0.24 98
IT.OPI.HGE. 2020-02-22T04:48:40.89 0.1 undecidable manual P 131 0.1295 116 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1 0.0001235 0.3 AML other m 2020-02-22T04:48:42.01
IV.VVLD.HHN. ML:1.3 0.0002265 0.1 AML other m 2020-02-22T04:48:42.03
IV.VVLD.HNE. ML:1 0.00012850574 0.6304 AML other m 2020-02-22T04:48:40.97
IV.VVLD.HNN. ML:1.2 0.00019633745 0.1184 AML other m 2020-02-22T04:48:42.03
IV.INTR.HHE. ML:0.8 3.7912475E-5 0.1792 AML other m 2020-02-22T04:48:45.94
IV.INTR.HHN. ML:0.9 4.563154E-5 0.1184 AML other m 2020-02-22T04:48:46.00
IV.INTR.HNN. ML:1.4 0.00014507743 0.8288 AML other m 2020-02-22T04:48:42.54
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