Earthquake with magnitude of ML 2.0 on date 25-08-2018 and time 17:56:23 (Italy) in region 6 km NE Guardialfiera (CB)

A magnitude ML 2.0 earthquake occured in region: 6 km NE Guardialfiera (CB), on

  • 25-08-2018 15:56:23 (UTC)
  • 25-08-2018 17:56:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8340, 14.8530 at 16 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Guardialfiera CB 6 1065 1065
Larino CB 6 6793 7858
Montecilfone CB 8 1348 9206
Palata CB 8 1726 10932
Acquaviva Collecroce CB 10 672 11604
Guglionesi CB 10 5321 16925
Casacalenda CB 10 2135 19060
Montorio nei Frentani CB 11 437 19497
Tavenna CB 11 718 20215
Castelmauro CB 12 1505 21720
Lupara CB 13 505 22225
Provvidenti CB 13 119 22344
Ururi CB 13 2693 25037
Montelongo CB 14 365 25402
San Martino in Pensilis CB 14 4793 30195
San Felice del Molise CB 14 634 30829
Civitacampomarano CB 15 417 31246
Morrone del Sannio CB 15 587 31833
Montenero di Bisaccia CB 15 6675 38508
Castelbottaccio CB 15 312 38820
Rotello CB 16 1212 40032
Bonefro CB 16 1384 41416
Portocannone CB 16 2551 43967
Ripabottoni CB 17 514 44481
San Giacomo degli Schiavoni CB 17 1406 45887
Mafalda CB 17 1211 47098
Santa Croce di Magliano CB 18 4435 51533
Castellino del Biferno CB 18 545 52078
Lucito CB 18 696 52774
Montefalcone nel Sannio CB 18 1556 54330
Montemitro CB 18 395 54725
San Giuliano di Puglia CB 19 1042 55767
Petacciato CB 20 3819 59586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of San Severo (53905 inhabitants)
71 Km NW of Foggia (151991 inhabitants)
78 Km N of Benevento (60091 inhabitants)
81 Km SE of Chieti (51815 inhabitants)
88 Km SE of Pescara (121014 inhabitants)
91 Km W of Manfredonia (57279 inhabitants)
95 Km NE of Caserta (76326 inhabitants)
95 Km SE of Montesilvano (53738 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 2.0 2018-08-25
15:56:23
41.8342 14.853 16 2019-04-24
14:51:15
Bollettino Sismico Italiano INGV 67007791
Reviewed
Rev100
ML 2.0 2018-08-25
15:56:24
41.8358 14.8695 11 2018-08-25
16:19:14
Sala Sismica INGV-Roma 60201551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-25 15:56:23 ± 0.16
Latitude 41.8342 ± 0.0054
Longitude 14.8530 ± 0.0060
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67007791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 648
Semi-minor axis of confidence ellipse (meter) 188
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.24102
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 67007791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-28 10:41:25

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 60201551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-25 16:19:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MELA.HHZ. 2018-08-25T15:56:33.88 0.6 undecidable manual S 122 26.751 109 0.36 45
IV.FRES.HHZ. 2018-08-25T15:56:32.21 0.6 undecidable manual S 316 21.6672 115 -0.04 48
YD.T1411.EHZ. 2018-08-25T15:56:30.61 0.6 undecidable manual S 26 13.7751 131 0.12 49
YD.T1413.EHZ. 2018-08-25T15:56:30.51 0.3 undecidable manual S 82 13.6752 131 0.04 74
YD.T1412.EHZ. 2018-08-25T15:56:29.58 0.6 undecidable manual S 232 8.9799 145 -0.05 50
IV.MELA.HHZ. 2018-08-25T15:56:29.26 0.1 undecidable manual P 122 26.751 109 -0.1 96
IV.FRES.HHZ. 2018-08-25T15:56:28.86 0.1 undecidable manual P 316 21.6672 115 0.23 95
YD.T1412.EHZ. 2018-08-25T15:56:27.06 0.1 positive manual P 232 8.9799 145 -0.06 100
YD.T1411.EHZ. 2018-08-25T15:56:27.49 0.1 positive manual P 26 13.7751 131 -0.12 97
YD.T1413.EHZ. 2018-08-25T15:56:27.48 0.1 undecidable manual P 82 13.6752 131 -0.12 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
YD.T1412.EHN. ML:0.5 0.00003218153999999999 0.1152 AML other m 2018-08-25T15:56:29.93
YD.T1412.HNE. ML:2.1 0.00117121955 0.128 AML other m 2018-08-25T15:56:29.92
YD.T1412.EHE. ML:2.2 0.0013607670000000001 0.128 AML other m 2018-08-25T15:56:29.93
YD.T1412.HNN. ML:2.2 0.0016495785 0.1664 AML other m 2018-08-25T15:56:29.63
YD.T1411.EHN. ML:2.1 0.0009299214 0.2048 AML other m 2018-08-25T15:56:30.66
YD.T1411.HNN. ML:2.1 0.0009847682 0.2048 AML other m 2018-08-25T15:56:30.65
IV.MELA.HHN. ML:1.7 0.00026769405000000003 0.0768 AML other m 2018-08-25T15:56:34.60
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
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