Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 25-10-2021 and time 02:57:44 (Italy) in region 4 km NE Pescosolido (FR)

A magnitude ML 1.4 earthquake occured in region: 4 km NE Pescosolido (FR), on

  • 25-10-2021 00:57:44 (UTC)
  • 25-10-2021 02:57:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7810, 13.6870 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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
Campoli Appennino FR 5 1725 3280
Sora FR 9 26144 29424
Pescasseroli AQ 9 2203 31627
Broccostella FR 10 2741 34368
Posta Fibreno FR 10 1139 35507
Balsorano AQ 11 3569 39076
Villavallelonga AQ 11 919 39995
Alvito FR 11 2713 42708
Vicalvi FR 12 783 43491
Opi AQ 12 420 43911
Fontechiari FR 12 1303 45214
San Donato Val di Comino FR 13 2107 47321
Collelongo AQ 15 1233 48554
Isola del Liri FR 15 11715 60269
San Vincenzo Valle Roveto AQ 15 2347 62616
Castelliri FR 16 3454 66070
Arpino FR 16 7262 73332
Gallinaro FR 17 1269 74601
Bisegna AQ 17 223 74824
Casalvieri FR 17 2698 77522
Lecce nei Marsi AQ 17 1702 79224
Casalattico FR 18 574 79798
Settefrati FR 18 728 80526
Gioia dei Marsi AQ 19 1989 82515
Ortucchio AQ 20 1860 84375

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km SE of L'Aquila (69753 inhabitants)
74 Km E of Latina (125985 inhabitants)
75 Km SW of Chieti (51815 inhabitants)
76 Km E of Velletri (53303 inhabitants)
76 Km E of Tivoli (56533 inhabitants)
83 Km E of Guidonia Montecelio (88673 inhabitants)
88 Km SW of Pescara (121014 inhabitants)
89 Km E of Aprilia (73446 inhabitants)
90 Km SW of Montesilvano (53738 inhabitants)
95 Km NW of Caserta (76326 inhabitants)
95 Km E of Anzio (54211 inhabitants)
98 Km S of Teramo (54892 inhabitants)
99 Km E of Pomezia (62966 inhabitants)
100 Km NW of Aversa (53047 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
Bulletin
Rev1000 		ML 1.4 2021-10-25
00:57:44		 41.7813 13.6868 12 2022-03-30
13:04:14		 Bollettino Sismico Italiano INGV 97163611
Reviewed
Rev100 		ML 1.5 2021-10-25
00:57:44		 41.7758 13.6853 13 2021-10-25
01:02:48		 Sala Sismica INGV-Roma 96966601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 00:57:44 ± 0.07
Latitude 41.7813 ± 0.0045
Longitude 13.6868 ± 0.0060
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97163611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 143
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.49013
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96966601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 01:02:48

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 97163611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-02 10:25:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHE. 2021-10-25T00:57:58.36 0.6 undecidable manual S 236 43.5231 91 -0.11 47
IV.LIK.EHZ.01 2021-10-25T00:57:56.18 0.3 undecidable manual S 199 32.9448 91 0.53 66
IV.CERA.HNZ. 2021-10-25T00:57:56.62 0.6 undecidable manual S 126 34.1436 91 0.65 42
IV.PTQR.HHZ. 2021-10-25T00:57:56.60 0.6 undecidable manual S 319 35.6421 91 0.23 46
IV.INTR.HHZ. 2021-10-25T00:57:55.08 0.3 undecidable manual S 35 31.2465 91 -0.11 72
IV.FAGN.HHZ. 2021-10-25T00:57:54.83 0.6 undecidable manual P 351 54.4011 91 0.63 40
IV.T0110.HHZ. 2021-10-25T00:57:53.31 0.3 undecidable manual P 8 50.2164 91 -0.25 68
IV.RNI2.HHZ. 2021-10-25T00:57:52.24 0.6 undecidable manual P 102 39.5271 91 0.34 45
IV.GIUL.HHE. 2021-10-25T00:57:51.99 0.3 undecidable manual P 236 43.5231 91 -0.53 64
IV.LRP.EHZ. 2021-10-25T00:57:51.20 0.3 undecidable manual S 209 17.0718 96 -0.2 72
IV.MCI.EHE. 2021-10-25T00:57:51.47 0.6 undecidable manual P 162 33.8439 91 0.44 45
IV.PTQR.HHZ. 2021-10-25T00:57:51.25 0.3 undecidable manual P 319 35.6421 91 -0.05 72
IV.INTR.HHZ. 2021-10-25T00:57:50.27 0.1 positive manual P 35 31.2465 91 -0.35 91
IV.VVLD.HHZ. 2021-10-25T00:57:50.15 0.1 undecidable manual S 332 11.0778 117 0.27 96
IV.LIK.EHZ.01 2021-10-25T00:57:50.67 0.3 undecidable manual P 199 32.9448 91 -0.22 70
IV.CERA.HNZ. 2021-10-25T00:57:50.70 0.6 undecidable manual P 126 34.1436 91 -0.38 45
IT.OPI.HGZ. 2021-10-25T00:57:49.96 0.3 undecidable manual S 93 11.877 114 -0.1 74
IV.POFI.HHZ. 2021-10-25T00:57:48.97 0.3 undecidable manual S 164 7.3815 136 -0.11 75
IV.LRP.EHZ. 2021-10-25T00:57:48.25 0.3 undecidable manual P 209 17.0718 96 -0.19 72
IV.POFI.HHZ. 2021-10-25T00:57:47.22 0.3 undecidable manual P 164 7.3815 136 0.12 75
IT.OPI.HGZ. 2021-10-25T00:57:47.61 0.1 undecidable manual P 93 11.877 114 -0.06 100
IV.VVLD.HHZ. 2021-10-25T00:57:47.65 0.1 positive manual P 332 11.0778 117 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:1.2 0.00021100000000000003 1 AML other m 2021-10-25T00:57:49.90
IV.POFI.HHE. ML:1.2 0.00020800000000000001 1.32 AML other m 2021-10-25T00:57:50.03
IV.VVLD.HNN. ML:1.5 0.00032900000000000003 0.32 AML other m 2021-10-25T00:57:50.44
IV.VVLD.HHN. ML:1.5 0.000363 0.32 AML other m 2021-10-25T00:57:50.44
IV.VVLD.HHE. ML:1.5 0.00035749999999999996 0.14 AML other m 2021-10-25T00:57:50.64
IV.VVLD.HNE. ML:1.5 0.0003265 0.14 AML other m 2021-10-25T00:57:50.71
IV.LRP.EHE. ML:1.6 0.0003665 0.44 AML other m 2021-10-25T00:57:51.56
IV.LRP.EHN. ML:1.3 0.000169 0.18 AML other m 2021-10-25T00:57:51.61
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