Earthquake with magnitude of ML 0.5 on date 23-08-2021 and time 05:36:54 (Italy) in region 4 km NW Pescosolido (FR)

A magnitude ML 0.5 earthquake occured in region: 4 km NW Pescosolido (FR), on

  • 23-08-2021 03:36:54 (UTC)
  • 23-08-2021 05:36:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7730, 13.6260 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
Pescosolido FR 4 1555 1555
Sora FR 6 26144 27699
Campoli Appennino FR 6 1725 29424
Balsorano AQ 6 3569 32993
Broccostella FR 8 2741 35734
Posta Fibreno FR 11 1139 36873
Villavallelonga AQ 11 919 37792
San Vincenzo Valle Roveto AQ 11 2347 40139
Isola del Liri FR 11 11715 51854
Fontechiari FR 12 1303 53157
Castelliri FR 12 3454 56611
Vicalvi FR 13 783 57394
Collelongo AQ 13 1233 58627
Alvito FR 14 2713 61340
Arpino FR 14 7262 68602
Pescasseroli AQ 14 2203 70805
Opi AQ 17 420 71225
San Donato Val di Comino FR 17 2107 73332
Casalvieri FR 17 2698 76030
Morino AQ 17 1448 77478
Monte San Giovanni Campano FR 17 12929 90407
Civita d'Antino AQ 18 979 91386
Lecce nei Marsi AQ 19 1702 93088
Casalattico FR 19 574 93662
Santopadre FR 19 1357 95019
Fontana Liri FR 19 2953 97972
Gallinaro FR 19 1269 99241
Boville Ernica FR 19 8737 107978
Veroli FR 19 20560 128538
Bisegna AQ 20 223 128761

Municipalities with at least 50000 inhabitants

An earthquake occurred to
67 Km S of L'Aquila (69753 inhabitants)
69 Km NE of Latina (125985 inhabitants)
71 Km E of Velletri (53303 inhabitants)
72 Km E of Tivoli (56533 inhabitants)
78 Km SW of Chieti (51815 inhabitants)
79 Km E of Guidonia Montecelio (88673 inhabitants)
84 Km E of Aprilia (73446 inhabitants)
90 Km E of Anzio (54211 inhabitants)
91 Km SW of Pescara (121014 inhabitants)
93 Km SW of Montesilvano (53738 inhabitants)
94 Km E of Pomezia (62966 inhabitants)
96 Km E of Roma (2864731 inhabitants)
97 Km NW of Caserta (76326 inhabitants)
99 Km S of Teramo (54892 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.5 2021-08-23
03:36:54
41.7733 13.6262 13 2021-08-23
03:51:26
Sala Sismica INGV-Roma 94523961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-23 03:36:54 ± 0.08
Latitude 41.7733 ± 0.0018
Longitude 13.6262 ± 0.0024
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 94523961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 237
Semi-minor axis of confidence ellipse (meter) 108
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.06
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.15199
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 94523961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-23 03:51:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2021-08-23T03:37:11.12 3.0 negative manual P -0.01 0
IV.VIVA.HHZ. 2021-08-23T03:37:07.99 3.0 negative manual P 0.02 0
IT.OPI.HGZ. 2021-08-23T03:37:01.25 0.1 undecidable manual S 89 16.872 112 -0.02 100
IV.LRP.EHZ. 2021-08-23T03:37:00.59 0.3 undecidable manual S 193 14.3745 118 -0.07 74
IV.POFI.HHZ. 2021-08-23T03:36:59.62 0.3 undecidable manual S 131 9.3795 135 0.03 76
IV.VVLD.HHZ. 2021-08-23T03:36:59.81 0.3 undecidable manual S 359 10.6782 130 -0.03 76
IT.OPI.HGZ. 2021-08-23T03:36:58.21 0.3 undecidable manual P 89 16.872 112 -0.06 74
IV.POFI.HHZ. 2021-08-23T03:36:57.40 0.6 undecidable manual P 131 9.3795 135 0.1 50
IV.VVLD.HHZ. 2021-08-23T03:36:57.49 0.3 negative manual P 359 10.6782 130 0.04 75
IV.LRP.EHZ. 2021-08-23T03:36:57.96 0.3 undecidable manual P 193 14.3745 118 0.04 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:0.8 0.0000597 0.46 AML other m 2021-08-23T03:37:00.00
IV.VVLD.HHE. ML:0.6 0.0000408 1.08 AML other m 2021-08-23T03:37:00.62
IV.LRP.EHN. ML:0.4 0.0000219 1.04 AML other m 2021-08-23T03:37:00.03
IV.POFI.HHE. ML:0.3 0.0000194 0.44 AML other m 2021-08-23T03:37:00.78
IV.LRP.EHE. ML:0.8 0.00005625 0.92 AML other m 2021-08-23T03:37:01.07
IV.POFI.HHN. ML:0.3 0.000018599999999999998 0.32 AML other m 2021-08-23T03:37:01.36
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