Earthquake with magnitude of ML 1.4 on date 26-10-2021 and time 01:39:15 (Italy) in region 2 km E Balvano (PZ)

A magnitude ML 1.4 earthquake occured in region: 2 km E Balvano (PZ), on

  • 25-10-2021 23:39:15 (UTC)
  • 26-10-2021 01:39:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.652, 15.539 at 3 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
Balvano PZ 2 1830 1830
Ricigliano SA 5 1144 2974
Baragiano PZ 6 2671 5645
Vietri di Potenza PZ 6 2832 8477
Picerno PZ 8 5985 14462
Romagnano al Monte SA 9 368 14830
Savoia di Lucania PZ 9 1127 15957
Salvitelle SA 9 560 16517
Caggiano SA 10 2765 19282
San Gregorio Magno SA 12 4286 23568
Sant'Angelo Le Fratte PZ 12 1429 24997
Bella PZ 12 5171 30168
Muro Lucano PZ 12 5497 35665
Ruoti PZ 14 3579 39244
Tito PZ 14 7332 46576
Auletta SA 14 2336 48912
Pertosa SA 14 690 49602
Satriano di Lucania PZ 14 2374 51976
Buccino SA 15 5047 57023
Polla SA 16 5279 62302
Castelgrande PZ 17 943 63245
Avigliano PZ 18 11577 74822
San Fele PZ 19 3004 77826
Petina SA 19 1159 78985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km W of Potenza (67122 inhabitants)
47 Km E of Battipaglia (50786 inhabitants)
66 Km E of Salerno (135261 inhabitants)
69 Km E of Avellino (54857 inhabitants)
70 Km E of Cava de' Tirreni (53659 inhabitants)
75 Km SW of Cerignola (58396 inhabitants)
83 Km SE of Benevento (60091 inhabitants)
86 Km E of Scafati (50787 inhabitants)
88 Km W of Altamura (70396 inhabitants)
89 Km E of Castellammare di Stabia (66466 inhabitants)
89 Km W of Matera (60436 inhabitants)
90 Km S of Foggia (151991 inhabitants)
90 Km SW of Andria (100440 inhabitants)
97 Km SW of Barletta (94814 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 1.4 2021-10-25
23:39:15
40.6518 15.5388 3 2021-10-25
23:44:16
Sala Sismica INGV-Roma 96990341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 23:39:15 ± 0.35
Latitude 40.6518 ± 0.0063
Longitude 15.5388 ± 0.0202
Depth (km) 3 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96990341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1530
Semi-minor axis of confidence ellipse (meter) 854
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 1530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 220
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.04766
Epicentral distance of station farthest from the epicenter (degree) 0.30937
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96990341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 23:44:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCRV.HHZ. 2021-10-25T23:39:27.07 0.1 undecidable manual S 295 0.3094 95 -0.22 92
IX.SRN3.HHZ.02 2021-10-25T23:39:22.21 0.1 undecidable manual S 200 0.1763 98 0 99
IV.MCRV.HHZ. 2021-10-25T23:39:22.83 0.6 negative manual P 295 0.3094 95 0.59 42
IV.CDRU.HHZ. 2021-10-25T23:39:20.86 1.0 undecidable manual P 228 0.241 96 0.15 24
IV.MRLC.HHZ. 2021-10-25T23:39:20.12 0.1 undecidable manual S 340 0.1115 103 0.39 92
IX.SRN3.HHZ.02 2021-10-25T23:39:19.38 0.1 positive manual P 200 0.1763 98 0.08 97
IX.SCL3.EHZ.02 2021-10-25T23:39:17.49 0.1 undecidable manual S 334 0.0477 119 0.06 100
IV.MRLC.HHZ. 2021-10-25T23:39:17.52 0.1 undecidable manual P 340 0.1115 103 -0.34 93
IX.SCL3.EHZ.02 2021-10-25T23:39:16.27 0.1 positive manual P 334 0.0477 119 -0.27 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HNE. ML:1.3 0.0003135 0.52 AML other m 2021-10-25T23:39:20.36
IV.MRLC.HHE. ML:1.6 0.000644 0.52 AML other m 2021-10-25T23:39:20.36
IV.MRLC.HHN. ML:1.6 0.0006335 0.28 AML other m 2021-10-25T23:39:20.25
IV.MRLC.HNN. ML:1.3 0.000296 0.3 AML other m 2021-10-25T23:39:20.25
IX.SRN3.HHN.02 ML:1.6 0.0003185 0.2 AML other m 2021-10-25T23:39:23.73
IX.SRN3.HHE.02 ML:1.7 0.000396 0.4 AML other m 2021-10-25T23:39:23.83
IV.CDRU.HHE. ML:0.9 4.445E-5 0.26 AML other m 2021-10-25T23:39:24.96
IV.CDRU.HHN. ML:1 6.465E-5 0.34 AML other m 2021-10-25T23:39:26.08
IV.MCRV.HHE. ML:1.1 4.865E-5 1.58 AML other m 2021-10-25T23:39:28.17
IV.MCRV.HHN. ML:1.3 8.935E-5 0.86 AML other m 2021-10-25T23:39:31.19
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