Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 27-07-2021 and time 23:44:31 (Italy) in region 5 km NE Corleto Monforte (SA)

A magnitude ML 1.1 earthquake occured in region: 5 km NE Corleto Monforte (SA), on

  • 27-07-2021 21:44:31 (UTC)
  • 27-07-2021 23:44:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.4740, 15.4080 at 10 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Corleto Monforte SA 5 592 592
Sant'Angelo a Fasanella SA 6 635 1227
San Rufo SA 6 1754 2981
Sant'Arsenio SA 7 2815 5796
San Pietro al Tanagro SA 7 1695 7491
Petina SA 7 1159 8650
Ottati SA 8 618 9268
Pertosa SA 9 690 9958
Polla SA 9 5279 15237
Auletta SA 10 2336 17573
Roscigno SA 10 817 18390
Bellosguardo SA 10 794 19184
Sacco SA 11 492 19676
Caggiano SA 13 2765 22441
Sicignano degli Alburni SA 13 3519 25960
Atena Lucana SA 13 2336 28296
Aquara SA 14 1545 29841
Salvitelle SA 14 560 30401
Piaggine SA 15 1311 31712
Valle dell'Angelo SA 15 248 31960
Castelcivita SA 15 1739 33699
Sant'Angelo Le Fratte PZ 15 1429 35128
Teggiano SA 15 7976 43104
Laurino SA 16 1548 44652
Savoia di Lucania PZ 16 1127 45779
Vietri di Potenza PZ 16 2832 48611
Castel San Lorenzo SA 16 2471 51082
Romagnano al Monte SA 17 368 51450
Sala Consilina SA 17 12664 64114
Postiglione SA 18 2151 66265
Controne SA 18 875 67140
Felitto SA 18 1283 68423
Buccino SA 18 5047 73470
Monte San Giacomo SA 19 1572 75042
Brienza PZ 19 4078 79120
Roccadaspide SA 19 7209 86329
Sassano SA 20 5013 91342

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Potenza (67122 inhabitants)
39 Km E of Battipaglia (50786 inhabitants)
59 Km E of Salerno (135261 inhabitants)
64 Km E of Cava de' Tirreni (53659 inhabitants)
71 Km SE of Avellino (54857 inhabitants)
81 Km E of Scafati (50787 inhabitants)
82 Km E of Castellammare di Stabia (66466 inhabitants)
90 Km SE of Benevento (60091 inhabitants)
95 Km E of Torre del Greco (86275 inhabitants)
97 Km E of Portici (55274 inhabitants)
97 Km E of Ercolano (53709 inhabitants)
98 Km SW of Cerignola (58396 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 1.1 2021-07-27
21:44:31		 40.4738 15.4085 10 2021-12-29
11:12:34		 Bollettino Sismico Italiano INGV 96096881
Reviewed
Rev100 		ML 1.1 2021-07-27
21:44:31		 40.4687 15.3922 10 2021-07-27
21:50:32		 Sala Sismica INGV-Roma 93283161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-27 21:44:31 ± 0.07
Latitude 40.4738 ± 0.0045
Longitude 15.4085 ± 0.0047
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96096881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 549
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 29
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.03957
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 96096881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-01 10:20:05

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 93283161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-27 21:50:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTSN.HHZ. 2021-07-27T21:44:44.68 0.6 undecidable manual S 128 37.0296 50 0.63 40
IX.SNR3.EHZ.02 2021-07-27T21:44:43.34 0.6 undecidable manual S 328 34.2435 50 0.03 47
IX.SCL3.EHZ.02 2021-07-27T21:44:41.04 0.6 undecidable manual S 19 26.0517 50 -0.07 48
IX.STN3.HNZ.01 2021-07-27T21:44:40.01 0.6 undecidable manual S 73 21.4674 115 0.31 46
IX.PGN3.HHZ.02 2021-07-27T21:44:38.75 0.3 undecidable manual P 71 34.5432 50 0.4 66
IX.SNR3.EHZ.02 2021-07-27T21:44:38.31 0.3 undecidable manual P 328 34.2435 50 0 71
IV.MGR.HHZ. 2021-07-27T21:44:38.57 0.1 undecidable manual P 162 39.2274 50 -0.51 85
IX.PST3.HNZ.01 2021-07-27T21:44:38.37 0.6 undecidable manual S 305 16.9719 121 0.04 49
IV.MCEL.HHZ. 2021-07-27T21:44:38.95 0.3 undecidable manual P 116 37.1295 50 0.2 68
IV.MTSN.HHZ. 2021-07-27T21:44:38.73 0.3 undecidable manual P 128 37.0296 50 -0.01 71
IV.MCRV.HHZ. 2021-07-27T21:44:38.52 0.6 undecidable manual P 330 39.7269 50 -0.64 40
IX.CGG3.HNN.01 2021-07-27T21:44:37.25 0.6 undecidable manual S 52 12.2766 129 0.27 47
IX.TEGI.HNN.01 2021-07-27T21:44:37.47 0.6 undecidable manual S 134 14.9739 124 -0.29 46
IV.SGO.HHZ. 2021-07-27T21:44:36.90 0.6 undecidable manual S 318 12.876 128 -0.25 47
IV.CAGG.EHE. 2021-07-27T21:44:36.92 0.6 undecidable manual S 43 12.6762 128 -0.19 48
IX.STN3.HNZ.01 2021-07-27T21:44:36.33 0.3 undecidable manual P 73 21.4674 115 0.1 72
IV.CDRU.HNZ. 2021-07-27T21:44:36.34 0.3 undecidable manual S 281 8.9799 138 0.19 72
IX.SCL3.EHZ.02 2021-07-27T21:44:36.84 0.3 undecidable manual P 19 26.0517 50 -0.2 70
IX.COL3.HHE.02 2021-07-27T21:44:36.76 0.6 undecidable manual P 344 24.5532 112 -0.05 48
IX.TEGI.HNN.01 2021-07-27T21:44:35.04 0.3 undecidable manual P 134 14.9739 124 -0.07 73
IX.PST3.HNZ.01 2021-07-27T21:44:35.61 0.3 undecidable manual P 305 16.9719 121 0.17 71
IV.CDRU.HNZ. 2021-07-27T21:44:34.56 0.1 undecidable manual P 281 8.9799 138 0.38 92
IV.SGO.HHZ. 2021-07-27T21:44:34.84 0.3 undecidable manual P 318 12.876 128 0.09 73
IX.CGG3.HNN.01 2021-07-27T21:44:34.65 0.3 undecidable manual P 52 12.2766 129 -0.01 74
IV.CAGG.EHE. 2021-07-27T21:44:34.60 0.1 undecidable manual P 43 12.6762 128 -0.13 96
IX.SRN3.HHZ.02 2021-07-27T21:44:34.82 0.6 undecidable manual S 72 4.3956 156 -0.48 45
IX.SRN3.HHZ.02 2021-07-27T21:44:33.67 0.1 undecidable manual P 72 4.3956 156 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.SRN3.HHE.02 ML:2.1 0.0021000000000000003 1.76 AML other m 2021-07-27T21:44:34.95
IX.SRN3.HHN.02 ML:2.1 0.002395 0.4 AML other m 2021-07-27T21:44:35.62
IV.SGO.HHE. ML:1.2 0.0001655 0.64 AML other m 2021-07-27T21:44:37.07
IV.SGO.HHN. ML:1.5 0.00034599999999999995 0.4 AML other m 2021-07-27T21:44:37.16
IX.SCL3.EHE.02 ML:1.2 0.0000859 0.98 AML other m 2021-07-27T21:44:42.49
IX.SNR3.EHE.02 ML:0.9 0.0000308 0.12 AML other m 2021-07-27T21:44:44.26
IX.SNR3.EHN.02 ML:1.2 0.0000621 0.12 AML other m 2021-07-27T21:44:44.49
IV.MCRV.HHE. ML:0.5 0.000011675000000000001 1.16 AML other m 2021-07-27T21:44:45.28
IX.PGN3.HHE.02 ML:1.0 0.00004215 0.78 AML other m 2021-07-27T21:44:45.78
IX.SCL3.EHN.02 ML:1.4 0.0001445 0.3 AML other m 2021-07-27T21:44:45.73
IX.PGN3.HHN.02 ML:1.0 0.0000388 0.86 AML other m 2021-07-27T21:44:46.44
IV.MCEL.HHE. ML:1.0 0.0000327 1.54 AML other m 2021-07-27T21:44:47.04
IV.MCEL.HHN. ML:1.0 0.000039699999999999996 0.46 AML other m 2021-07-27T21:44:47.32
IV.MTSN.HHE. ML:1.0 0.0000407 0.22 AML other m 2021-07-27T21:44:47.53
IV.MGR.HHE. ML:0.8 0.000027099999999999998 1 AML other m 2021-07-27T21:44:47.72
IV.MTSN.HHN. ML:1.2 0.000053 0.66 AML other m 2021-07-27T21:44:48.63
IV.MGR.HHN. ML:0.9 0.00003195 0.6 AML other m 2021-07-27T21:44:49.69
IV.MCRV.HHN. ML:0.9 0.0000227 0.52 AML other m 2021-07-27T21:44:51.55
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