Earthquake with magnitude of ML 1.6 on date 27-07-2020 and time 11:46:35 (Italy) in region 5 km W Melfi (PZ)

A magnitude ML 1.6 earthquake occured in region: 5 km W Melfi (PZ), on

  • 27-07-2020 09:46:35 (UTC)
  • 27-07-2020 11:46:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.02, 15.6 at 10 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
Melfi PZ 5 17767 17767
Monteverde AV 6 784 18551
Rapolla PZ 7 4432 22983
Barile PZ 10 2785 25768
Aquilonia AV 11 1739 27507
Rionero in Vulture PZ 11 13230 40737
Ginestra PZ 15 747 41484
Lacedonia AV 15 2340 43824
Rocchetta Sant'Antonio FG 15 1875 45699
Ripacandida PZ 16 1744 47443
Candela FG 16 2728 50171
Atella PZ 16 3827 53998
Lavello PZ 17 13626 67624
Calitri AV 19 4666 72290
Bisaccia AV 19 3831 76121
Ruvo del Monte PZ 19 1083 77204
Venosa PZ 20 11863 89067

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Cerignola (58396 inhabitants)
45 Km NW of Potenza (67122 inhabitants)
50 Km S of Foggia (151991 inhabitants)
63 Km W of Andria (100440 inhabitants)
66 Km SW of Barletta (94814 inhabitants)
69 Km E of Avellino (54857 inhabitants)
69 Km NE of Battipaglia (50786 inhabitants)
70 Km E of Benevento (60091 inhabitants)
73 Km SW of Manfredonia (57279 inhabitants)
74 Km W of Trani (56217 inhabitants)
77 Km S of San Severo (53905 inhabitants)
80 Km W of Bisceglie (55422 inhabitants)
80 Km E of Salerno (135261 inhabitants)
83 Km W of Altamura (70396 inhabitants)
83 Km E of Cava de' Tirreni (53659 inhabitants)
87 Km W of Molfetta (59874 inhabitants)
92 Km W of Bitonto (55540 inhabitants)
92 Km W of Matera (60436 inhabitants)
95 Km E of Scafati (50787 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 1.6 2020-07-27
09:46:35
41.01 15.6 10 2020-07-27
09:57:53
Sala Sismica INGV-Roma 81397841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-27 09:46:35 ± 0.24
Latitude 41.01 ± 0.01
Longitude 15.60 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81397841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1890
Semi-minor axis of confidence ellipse (meter) 1280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 1890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.74734
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.6
Num. used stations 8
Type of magnitude ML
Reference to an origin 81397841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-27 09:57:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SGRT.HHZ. 2020-07-27T09:46:49.99 0.1 undecidable manual P 8 0.7473 50 0.29 86
IV.CAFE.HHZ. 2020-07-27T09:46:45.78 0.1 undecidable manual S 273 0.2752 50 -0.43 92
IV.SNAL.HHZ. 2020-07-27T09:46:42.27 0.3 negative manual P 253 0.3094 50 0.07 74
IV.CAFE.HHZ. 2020-07-27T09:46:41.44 0.1 undecidable manual P 273 0.2752 50 -0.18 97
IV.MRLC.HHZ. 2020-07-27T09:46:41.37 0.1 undecidable manual P 198 0.2716 50 -0.19 97
IV.SGTA.HHN. 2020-07-27T09:46:40.46 0.1 undecidable manual P 304 0.2149 113 -0.07 100
IV.CAPA.HHZ. 2020-07-27T09:46:40.28 3.0 negative manual P 0.75 0
IX.CLT3.HHE.02 2020-07-27T09:46:40.73 0.1 undecidable manual P 233 0.1862 116 0.78 82
IX.RDM3.HNN.02 2020-07-27T09:46:39.88 0.1 undecidable manual P 199 0.1475 121 0.68 86
IV.VULT.HHZ. 2020-07-27T09:46:39.06 0.1 undecidable manual S 169 0.0612 146 -0.48 94
IV.VULT.HHZ. 2020-07-27T09:46:37.50 0.1 undecidable manual P 169 0.0612 146 -0.27 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VULT.HHE. ML:2.1 0.00194 0.66 AML other m 2020-07-27T09:46:42.41
IV.VULT.HNE. ML:2.1 0.001765 0.68 AML other m 2020-07-27T09:46:42.41
IV.VULT.HHN. ML:2.3 0.00299 0.98 AML other m 2020-07-27T09:46:43.76
IV.VULT.HNN. ML:2.3 0.00285 0.98 AML other m 2020-07-27T09:46:43.77
IV.MRLC.HHN. ML:1 4.325E-5 1.44 AML other m 2020-07-27T09:46:45.81
IV.MRLC.HHE. ML:1 4.4E-5 0.42 AML other m 2020-07-27T09:46:49.78
IV.CAFE.HHN. ML:1 4.39E-5 0.6 AML other m 2020-07-27T09:47:01.61
IV.CAFE.HHE. ML:1.2 6.905E-5 0.52 AML other m 2020-07-27T09:47:04.59
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