Earthquake with magnitude of ML 1.5 on date 25-10-2021 and time 02:57:44 (Italy) in region 4 km NE Pescosolido (FR)

A magnitude ML 1.5 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) 41.776, 13.685 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
Campoli Appennino FR 4 1725 3280
Sora FR 9 26144 29424
Broccostella FR 9 2741 32165
Posta Fibreno FR 9 1139 33304
Pescasseroli AQ 10 2203 35507
Balsorano AQ 11 3569 39076
Alvito FR 11 2713 41789
Vicalvi FR 11 783 42572
Villavallelonga AQ 11 919 43491
Fontechiari FR 12 1303 44794
Opi AQ 12 420 45214
San Donato Val di Comino FR 13 2107 47321
Isola del Liri FR 14 11715 59036
San Vincenzo Valle Roveto AQ 15 2347 61383
Collelongo AQ 15 1233 62616
Arpino FR 15 7262 69878
Castelliri FR 15 3454 73332
Casalvieri FR 16 2698 76030
Gallinaro FR 16 1269 77299
Bisegna AQ 17 223 77522
Casalattico FR 17 574 78096
Lecce nei Marsi AQ 18 1702 79798
Settefrati FR 18 728 80526
Santopadre FR 20 1357 81883
Atina FR 20 4316 86199
Gioia dei Marsi AQ 20 1989 88188

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km SE of L'Aquila (69753 inhabitants)
73 Km E of Latina (125985 inhabitants)
76 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)
88 Km E of Aprilia (73446 inhabitants)
91 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)
99 Km NW of Aversa (53047 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 2021-10-25
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 ± 0.09
Latitude 41.7758 ± 0.0045
Longitude 13.6853 ± 0.0072
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 96966601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 638
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 640
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 17
Number of defining phases 17
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) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.45865
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
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 96966601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 01:02:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTQR.HHZ. 2021-10-25T00:57:56.60 0.6 undecidable manual S 319 0.3247 94 0.26 46
IV.INTR.HHZ. 2021-10-25T00:57:55.08 0.3 undecidable manual S 35 0.2869 95 -0.14 70
IV.T0110.HHZ. 2021-10-25T00:57:53.31 0.3 undecidable manual P 8 0.4587 92 -0.21 67
IV.RNI2.HHZ. 2021-10-25T00:57:52.62 0.1 undecidable manual P 102 0.3561 94 0.85 75
IV.LRP.EHZ. 2021-10-25T00:57:51.20 0.3 undecidable manual S 210 0.1484 109 0.01 74
IV.PTQR.HHZ. 2021-10-25T00:57:51.25 0.3 undecidable manual P 319 0.3247 94 0.01 72
IV.GIUL.HHE. 2021-10-25T00:57:51.99 0.3 undecidable manual P 236 0.3885 93 -0.33 66
IV.LIK.EHZ.01 2021-10-25T00:57:50.67 0.3 undecidable manual P 199 0.2914 95 0 72
IV.INTR.HHZ. 2021-10-25T00:57:50.27 0.1 positive manual P 35 0.2869 95 -0.31 90
IV.CERA.HNZ. 2021-10-25T00:57:50.70 0.6 undecidable manual P 126 0.3058 94 -0.21 46
IV.VVLD.HHZ. 2021-10-25T00:57:50.15 0.1 undecidable manual S 334 0.1043 124 0.12 97
IT.OPI.HGZ. 2021-10-25T00:57:49.96 0.3 undecidable manual S 90 0.1079 122 -0.15 74
IV.LRP.EHZ. 2021-10-25T00:57:48.25 0.3 undecidable manual P 210 0.1484 109 -0.01 74
IV.POFI.HHZ. 2021-10-25T00:57:48.97 0.3 undecidable manual S 161 0.0621 144 -0.14 75
IV.VVLD.HHZ. 2021-10-25T00:57:47.65 0.1 positive manual P 334 0.1043 124 0.06 99
IT.OPI.HGZ. 2021-10-25T00:57:47.61 0.1 undecidable manual P 90 0.1079 122 -0.03 100
IV.POFI.HHZ. 2021-10-25T00:57:47.22 0.3 undecidable manual P 161 0.0621 144 0.16 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHN. ML:1.2 0.000211 1 AML other m 2021-10-25T00:57:49.90
IV.POFI.HHE. ML:1.2 0.000208 1.32 AML other m 2021-10-25T00:57:50.03
IV.VVLD.HHN. ML:1.6 0.000363 0.32 AML other m 2021-10-25T00:57:50.44
IV.VVLD.HNN. ML:1.5 0.000329 0.32 AML other m 2021-10-25T00:57:50.44
IV.VVLD.HNE. ML:1.5 0.0003265 0.14 AML other m 2021-10-25T00:57:50.71
IV.VVLD.HHE. ML:1.6 0.0003575 0.14 AML other m 2021-10-25T00:57:50.64
IV.LRP.EHE. ML:1.7 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