Earthquake with magnitude of ML 1.8 on date 25-02-2021 and time 05:42:22 (UTC) in region 5 km NE Campoli Appennino (FR)

A magnitude ML 1.8 earthquake occured in region: 5 km NE Campoli Appennino (FR), on

  • 25-02-2021 05:42:22 (UTC)
  • 25-02-2021 06:42:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.78, 13.7 at 11 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 5 1555 1555
Campoli Appennino FR 5 1725 3280
Pescasseroli AQ 8 2203 5483
Posta Fibreno FR 10 1139 6622
Sora FR 10 26144 32766
Opi AQ 11 420 33186
Broccostella FR 11 2741 35927
Alvito FR 11 2713 38640
Villavallelonga AQ 12 919 39559
Vicalvi FR 12 783 40342
Balsorano AQ 12 3569 43911
San Donato Val di Comino FR 12 2107 46018
Fontechiari FR 13 1303 47321
Collelongo AQ 15 1233 48554
Isola del Liri FR 16 11715 60269
Gallinaro FR 16 1269 61538
Bisegna AQ 16 223 61761
San Vincenzo Valle Roveto AQ 16 2347 64108
Arpino FR 17 7262 71370
Casalvieri FR 17 2698 74068
Lecce nei Marsi AQ 17 1702 75770
Castelliri FR 17 3454 79224
Settefrati FR 17 728 79952
Casalattico FR 18 574 80526
Villetta Barrea AQ 19 653 81179
Gioia dei Marsi AQ 19 1989 83168
Ortucchio AQ 20 1860 85028
Civitella Alfedena AQ 20 296 85324
Atina FR 20 4316 89640
Scanno AQ 20 1847 91487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km SE of L'Aquila (69753 inhabitants)
74 Km SW of Chieti (51815 inhabitants)
75 Km E of Latina (125985 inhabitants)
78 Km E of Tivoli (56533 inhabitants)
78 Km E of Velletri (53303 inhabitants)
84 Km E of Guidonia Montecelio (88673 inhabitants)
87 Km SW of Pescara (121014 inhabitants)
89 Km SW of Montesilvano (53738 inhabitants)
90 Km E of Aprilia (73446 inhabitants)
95 Km NW of Caserta (76326 inhabitants)
97 Km E of Anzio (54211 inhabitants)
97 Km S of Teramo (54892 inhabitants)
99 Km NW of Aversa (53047 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
Reviewed
Rev100
ML 1.8 2021-02-25
05:42:22
41.78 13.7 11 2021-02-25
05:46:15
Sala Sismica INGV-Roma 87472491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-25 05:42:22 ± 0.06
Latitude 41.78 ± 0.00
Longitude 13.70 ± 0.00
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87472491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 335
Semi-minor axis of confidence ellipse (meter) 193
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 294
Circular confidence region, given by single value of horizontal uncertainty (meter) 330
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29857
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 87472491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-25 05:46:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2021-02-25T05:42:44.89 3.0 undecidable manual S -4.05 0
IV.VCEL.EHZ. 2021-02-25T05:42:34.50 3.0 positive manual P -0.22 0
IV.GUAR.HHZ. 2021-02-25T05:42:33.50 0.1 undecidable manual S 272 0.2932 91 0.02 96
IV.INTR.HHZ. 2021-02-25T05:42:32.78 0.1 undecidable manual S 33 0.2716 91 -0.08 94
IV.LPEL.HHZ. 2021-02-25T05:42:31.32 3.0 negative manual P -0.25 0
IV.MIDA.HHZ. 2021-02-25T05:42:31.25 3.0 undecidable manual P -0.19 0
IV.T0110.HHZ. 2021-02-25T05:42:31.41 3.0 positive manual P -0.17 0
IV.RNI2.HHZ. 2021-02-25T05:42:30.29 0.3 negative manual P 0.5 1.07
IV.GIUL.HHZ. 2021-02-25T05:42:30.61 3.0 positive manual P -0.09 0
IV.LRP.EHZ. 2021-02-25T05:42:29.54 0.1 undecidable manual S 213 0.1628 93 -0.08 96
IV.PTQR.HHZ. 2021-02-25T05:42:29.64 1.0 negative manual P 0.32 0.36
IV.MCI.EHZ. 2021-02-25T05:42:28.89 0.6 undecidable manual P -0.09 0.71
IV.GUAR.HHZ. 2021-02-25T05:42:28.76 0.1 undecidable manual P 272 0.2932 91 -0.02 95
IV.CERA.HHZ. 2021-02-25T05:42:28.54 0.1 undecidable manual P 128 0.2986 91 -0.34 89
IV.INTR.HHZ. 2021-02-25T05:42:28.30 0.1 undecidable manual P 33 0.2716 91 -0.12 94
IV.VVLD.HHZ. 2021-02-25T05:42:27.88 0.1 undecidable manual S 325 0.1052 113 -0.08 98
IV.POFI.HHZ. 2021-02-25T05:42:27.01 0.1 undecidable manual S 175 0.0665 135 0 100
IT.OPI.HGZ. 2021-02-25T05:42:27.56 0.1 undecidable manual S 94 0.0935 120 -0.09 98
IV.LRP.EHZ. 2021-02-25T05:42:26.47 0.1 undecidable manual P 213 0.1628 93 -0.08 96
IT.OPI.HGZ. 2021-02-25T05:42:25.47 0.1 undecidable manual P 94 0.0935 120 0.06 99
IV.VVLD.HHZ. 2021-02-25T05:42:25.80 0.1 undecidable manual P 325 0.1052 113 0.21 95
IV.POFI.HHZ. 2021-02-25T05:42:25.19 0.1 undecidable manual P 175 0.0665 135 0.15 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HNN. ML:2 0.00149 0.32 AML other m 2021-02-25T05:42:27.14
IV.POFI.HHN. ML:2 0.00124 0.32 AML other m 2021-02-25T05:42:27.30
IV.POFI.HNE. ML:2.1 0.001615 1.1 AML other m 2021-02-25T05:42:27.95
IV.POFI.HHE. ML:2 0.001405 1.72 AML other m 2021-02-25T05:42:27.95
IV.VVLD.HHE. ML:1.9 0.000807 0.46 AML other m 2021-02-25T05:42:28.33
IV.VVLD.HNE. ML:1.8 0.000781 0.48 AML other m 2021-02-25T05:42:28.34
IV.VVLD.HNN. ML:1.8 0.000734 0.4 AML other m 2021-02-25T05:42:28.55
IV.VVLD.HHN. ML:1.8 0.0007665 0.38 AML other m 2021-02-25T05:42:28.55
IV.LRP.EHE. ML:2 0.0008815 0.24 AML other m 2021-02-25T05:42:29.87
IV.LRP.EHN. ML:1.5 0.0002455 0.18 AML other m 2021-02-25T05:42:29.91
IV.INTR.HNE. ML:1.8 0.0003335 1.42 AML other m 2021-02-25T05:42:33.05
IV.INTR.HNN. ML:1.9 0.0004025 0.84 AML other m 2021-02-25T05:42:33.47
IV.GUAR.HHE. ML:1.7 0.0002175 0.7 AML other m 2021-02-25T05:42:34.15
IV.GUAR.HHN. ML:1.7 0.000236 0.56 AML other m 2021-02-25T05:42:34.75
IV.MCI.EHE. ML:2.5 0.001365 0.42 AML other m 2021-02-25T05:42:34.62
IV.INTR.HHE. ML:1.9 0.000348 1.78 AML other m 2021-02-25T05:42:35.02
IV.CERA.HHE. ML:1.7 0.000199 1.34 AML other m 2021-02-25T05:42:35.97
IV.MCI.EHN. ML:2.4 0.001057 0.18 AML other m 2021-02-25T05:42:35.55
IV.INTR.HHN. ML:1.9 0.0004075 0.34 AML other m 2021-02-25T05:42:35.65
IV.PTQR.HHN. ML:1.4 0.0001062 0.96 AML other m 2021-02-25T05:42:35.35
IV.RNI2.HHE. ML:1.9 0.0002595 0.72 AML other m 2021-02-25T05:42:36.82
IV.RNI2.HNE. ML:1.8 0.0002425 0.72 AML other m 2021-02-25T05:42:36.82
IV.PTQR.HHE. ML:1.6 0.000157 1.72 AML other m 2021-02-25T05:42:37.95
IV.RNI2.HHN. ML:1.7 0.0001975 1.62 AML other m 2021-02-25T05:42:37.97
IV.GIUL.HHE. ML:1.9 0.0002385 0.4 AML other m 2021-02-25T05:42:37.37
IV.GIUL.HHN. ML:2 0.000329 0.22 AML other m 2021-02-25T05:42:37.56
IV.MIDA.HHE. ML:1.5 7.855E-5 0.64 AML other m 2021-02-25T05:42:39.89
IV.RNI2.HNN. ML:1.7 0.0001875 0.4 AML other m 2021-02-25T05:42:39.41
IV.MIDA.HHN. ML:1.4 6.67E-5 1.72 AML other m 2021-02-25T05:42:39.92
IV.T0110.HHE. ML:2 0.0002385 0.42 AML other m 2021-02-25T05:42:40.25
IV.T0110.HHN. ML:1.8 0.000178 0.44 AML other m 2021-02-25T05:42:40.34
IV.LPEL.HHE. ML:1.8 0.000155 0.34 AML other m 2021-02-25T05:42:40.96
IV.LPEL.HHN. ML:1.8 0.0001495 0.94 AML other m 2021-02-25T05:42:41.78
IV.CERA.HHN. ML:1.6 0.0001775 1.2 AML other m 2021-02-25T05:42:41.98
IV.VCEL.EHE. ML:1.8 9.39E-5 0.32 AML other m 2021-02-25T05:42:46.13
IV.VCEL.EHN. ML:1.7 8.14E-5 0.8 AML other m 2021-02-25T05:42:49.60
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