Earthquake with magnitude of ML 0.7 on date 22-09-2021 and time 01:24:43 (Italy) in region 4 km N Ricigliano (SA)

A magnitude ML 0.7 earthquake occured in region: 4 km N Ricigliano (SA), on

  • 21-09-2021 23:24:43 (UTC)
  • 22-09-2021 01:24:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.707, 15.481 at 14 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
Ricigliano SA 4 1144 1144
Muro Lucano PZ 5 5497 6641
Balvano PZ 7 1830 8471
Bella PZ 8 5171 13642
San Gregorio Magno SA 9 4286 17928
Romagnano al Monte SA 10 368 18296
Castelgrande PZ 10 943 19239
Baragiano PZ 10 2671 21910
Vietri di Potenza PZ 12 2832 24742
Buccino SA 13 5047 29789
Salvitelle SA 13 560 30349
San Fele PZ 14 3004 33353
Picerno PZ 15 5985 39338
Caggiano SA 16 2765 42103
Rapone PZ 16 990 43093
Colliano SA 16 3638 46731
Pescopagano PZ 16 1910 48641
Savoia di Lucania PZ 16 1127 49768
Ruvo del Monte PZ 17 1083 50851
Ruoti PZ 17 3579 54430
Palomonte SA 17 3985 58415
Auletta SA 17 2336 60751
Laviano SA 17 1438 62189
Santomenna SA 18 443 62632
Sant'Andrea di Conza AV 18 1539 64171
Valva SA 18 1643 65814
Pertosa SA 18 690 66504
Castelnuovo di Conza SA 18 619 67123
Sant'Angelo Le Fratte PZ 19 1429 68552

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Potenza (67122 inhabitants)
43 Km E of Battipaglia (50786 inhabitants)
61 Km E of Salerno (135261 inhabitants)
62 Km E of Avellino (54857 inhabitants)
65 Km E of Cava de' Tirreni (53659 inhabitants)
72 Km SW of Cerignola (58396 inhabitants)
75 Km SE of Benevento (60091 inhabitants)
81 Km E of Scafati (50787 inhabitants)
84 Km S of Foggia (151991 inhabitants)
84 Km E of Castellammare di Stabia (66466 inhabitants)
90 Km SW of Andria (100440 inhabitants)
91 Km W of Altamura (70396 inhabitants)
94 Km E of Torre del Greco (86275 inhabitants)
94 Km W of Matera (60436 inhabitants)
96 Km SW of Barletta (94814 inhabitants)
96 Km E of Portici (55274 inhabitants)
96 Km E of Ercolano (53709 inhabitants)
97 Km E of Acerra (59573 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 0.7 2021-09-21
23:24:43
40.7072 15.4808 14 2021-09-21
23:29:39
Sala Sismica INGV-Roma 95715831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 23:24:43 ± 0.23
Latitude 40.7072 ± 0.0090
Longitude 15.4808 ± 0.0119
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95715831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1048
Semi-minor axis of confidence ellipse (meter) 911
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
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) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.25541
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:0.7

Field Value
Value 0.7
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 95715831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 23:29:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-09-21T23:24:53.92 0.3 undecidable manual S 212 0.2554 100 -0.09 96
IX.SRN3.HHZ.02 2021-09-21T23:24:53.19 0.3 undecidable manual S 185 0.2212 103 0.16 94
IX.SRN3.HHZ.02 2021-09-21T23:24:49.14 0.6 negative manual P 185 0.2212 103 -0.04 65
IV.CDRU.HHZ. 2021-09-21T23:24:49.48 0.6 undecidable manual P 212 0.2554 100 -0.27 62
IX.SCL3.EHZ.02 2021-09-21T23:24:48.57 0.3 undecidable manual S 118 0.0261 165 -0.03 99
IV.MRLC.HHZ. 2021-09-21T23:24:48.94 0.3 undecidable manual S 7 0.0495 153 0.09 100
IX.COL3.HHE.02 2021-09-21T23:24:47.82 0.6 undecidable manual P 260 0.116 125 0.31 62
IV.MRLC.HHZ. 2021-09-21T23:24:46.64 0.6 negative manual P 7 0.0495 153 -0.12 65
IX.SCL3.EHZ.02 2021-09-21T23:24:46.58 0.3 undecidable manual P 118 0.0261 165 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.SCL3.EHE.02 ML:1.3 0.00025145165 0.1536 AML other m 2021-09-21T23:24:49.45
IX.SCL3.EHN.02 ML:1.4 0.0002922288 0.1664 AML other m 2021-09-21T23:24:48.71
IV.MRLC.HNE. ML:0.3 2.7052493E-5 0.3584 AML other m 2021-09-21T23:24:49.24
IV.MRLC.HNN. ML:0.2 2.1586063E-5 0.384 AML other m 2021-09-21T23:24:49.31
IV.MRLC.HHE. ML:0.7 5.6866425E-5 0.3456 AML other m 2021-09-21T23:24:49.24
IV.MRLC.HHN. ML:0.6 4.856469E-5 0.32 AML other m 2021-09-21T23:24:49.52
IX.SRN3.HHE.02 ML:0.6 2.3969656E-5 0.2304 AML other m 2021-09-21T23:24:55.00
IX.SRN3.HHN.02 ML:0.8 3.3946815E-5 0.1536 AML other m 2021-09-21T23:24:53.73
IV.CDRU.HHE. ML:0.3 1.095396E-5 0.896 AML other m 2021-09-21T23:25:03.40
IV.CDRU.HHN. ML:0 5.056431814E-6 44.3392 AML other m 2021-09-21T23:24:49.48
IV.CDRU.HNE. ML:1.2 7.6144575E-5 1.0752 AML other m 2021-09-21T23:24:52.81
IV.CDRU.HNN. ML:1.2 8.3250715E-5 1.0624 AML other m 2021-09-21T23:25:03.73
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