Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 27-03-2021 and time 00:50:30 (Italy) in region 3 km NE Romagnano al Monte (SA)

A magnitude ML 1.7 earthquake occured in region: 3 km NE Romagnano al Monte (SA), on

  • 26-03-2021 23:50:30 (UTC)
  • 27-03-2021 00:50:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.6450, 15.4640 at 9 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
Romagnano al Monte SA 3 368 368
Ricigliano SA 3 1144 1512
Balvano PZ 4 1830 3342
San Gregorio Magno SA 6 4286 7628
Salvitelle SA 6 560 8188
Vietri di Potenza PZ 6 2832 11020
Buccino SA 8 5047 16067
Caggiano SA 9 2765 18832
Auletta SA 10 2336 21168
Savoia di Lucania PZ 11 1127 22295
Pertosa SA 11 690 22985
Baragiano PZ 12 2671 25656
Muro Lucano PZ 12 5497 31153
Sant'Angelo Le Fratte PZ 14 1429 32582
Bella PZ 14 5171 37753
Palomonte SA 15 3985 41738
Picerno PZ 15 5985 47723
Polla SA 15 5279 53002
Petina SA 15 1159 54161
Castelgrande PZ 16 943 55104
Sicignano degli Alburni SA 16 3519 58623
Colliano SA 17 3638 62261
Satriano di Lucania PZ 18 2374 64635
Contursi Terme SA 19 3394 68029
Sant'Arsenio SA 19 2815 70844
Tito PZ 19 7332 78176
Valva SA 19 1643 79819
Ruoti PZ 20 3579 83398
Oliveto Citra SA 20 3802 87200

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Potenza (67122 inhabitants)
41 Km E of Battipaglia (50786 inhabitants)
60 Km E of Salerno (135261 inhabitants)
64 Km E of Avellino (54857 inhabitants)
64 Km E of Cava de' Tirreni (53659 inhabitants)
78 Km SW of Cerignola (58396 inhabitants)
79 Km SE of Benevento (60091 inhabitants)
80 Km E of Scafati (50787 inhabitants)
83 Km E of Castellammare di Stabia (66466 inhabitants)
91 Km S of Foggia (151991 inhabitants)
94 Km E of Torre del Greco (86275 inhabitants)
94 Km W of Altamura (70396 inhabitants)
95 Km SW of Andria (100440 inhabitants)
96 Km E of Portici (55274 inhabitants)
96 Km W of Matera (60436 inhabitants)
96 Km E of Ercolano (53709 inhabitants)
98 Km E of Acerra (59573 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 1.7 2021-03-26
23:50:30		 40.6452 15.4638 9 2021-07-12
16:55:04		 Bollettino Sismico Italiano INGV 88643791
Reviewed
Rev100 		ML 1.8 2021-03-26
23:50:29		 40.6547 15.4643 9 2021-03-27
00:01:09		 Sala Sismica INGV-Roma 88505161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-26 23:50:30 ± 0.05
Latitude 40.6452 ± 0.0036
Longitude 15.4638 ± 0.0047
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88643791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 44
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 28
Number of associated phases, regardless of their use for origin computation 65
Number of defining phases 65
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.06115
Epicentral distance of station farthest from the epicenter (degree) 0.90202
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 42
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 88505161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 00:01:09

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 88643791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-09 09:43:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SIRI.HHZ. 2021-03-26T23:50:50.19 0.6 undecidable manual S 146 61.6938 50 0.8 37
IV.AMUR.HHZ. 2021-03-26T23:50:47.57 0.3 undecidable manual P 73 100.122 50 0.42 59
IX.SALI.HNE.01 2021-03-26T23:50:45.10 0.6 undecidable manual S 323 39.5271 50 1.61 25
IV.ACER.HHZ. 2021-03-26T23:50:45.52 0.6 undecidable manual S 69 43.2234 50 1.06 34
IX.RSF3.HNE.02 2021-03-26T23:50:45.07 0.6 undecidable manual S 326 42.8238 50 0.7 40
IV.MIGL.HHZ. 2021-03-26T23:50:44.05 0.3 undecidable manual P 93 82.3509 50 -0.37 62
IV.MRVN.HHZ. 2021-03-26T23:50:43.54 0.3 undecidable manual P 53 76.7676 50 -0.02 67
IV.VULT.HHN. 2021-03-26T23:50:43.92 0.6 undecidable manual S 20 36.6411 50 1.21 32
IX.CMP3.HNE.02 2021-03-26T23:50:41.70 0.6 undecidable manual S 271 32.3454 50 0.15 47
IX.TEGI.HNN.01 2021-03-26T23:50:41.21 0.3 undecidable manual S 168 30.0477 50 0.26 70
IV.SLCN.HHZ. 2021-03-26T23:50:41.70 0.6 undecidable manual S 153 31.6461 50 0.32 46
IV.MCRV.HHZ. 2021-03-26T23:50:40.97 0.6 undecidable manual S 302 29.1486 108 0.27 46
IV.PTRP.HHZ. 2021-03-26T23:50:40.33 0.3 undecidable manual P 105 52.2033 50 0.57 62
IV.SIRI.HHZ. 2021-03-26T23:50:40.56 0.3 undecidable manual P 146 61.6938 50 -0.66 59
IV.CAFE.HHN. 2021-03-26T23:50:39.12 0.3 undecidable manual P 336 46.5201 50 0.22 68
IV.PALZ.HHZ. 2021-03-26T23:50:39.69 0.3 undecidable manual P 51 53.3022 50 -0.24 67
IX.SNR3.HHZ.02 2021-03-26T23:50:39.37 0.6 undecidable manual S 294 24.9528 110 0.06 49
IV.MGR.HHZ. 2021-03-26T23:50:39.66 0.3 undecidable manual P 172 56.7987 50 -0.82 55
IV.ACER.HHZ. 2021-03-26T23:50:38.64 0.3 undecidable manual P 69 43.2234 50 0.26 68
IX.PST3.HNE.02 2021-03-26T23:50:38.48 0.6 undecidable manual S 243 20.7681 114 0.49 45
IV.MCEL.HHZ. 2021-03-26T23:50:38.25 0.3 undecidable manual P 141 45.5211 50 -0.5 64
IX.RSF3.HNE.02 2021-03-26T23:50:38.02 0.3 undecidable manual P 326 42.8238 50 -0.31 67
IV.CMPR.HHZ. 2021-03-26T23:50:37.22 0.1 positive manual P 201 38.7279 50 -0.47 87
IX.SALI.HNE.01 2021-03-26T23:50:37.96 0.1 undecidable manual P 323 39.5271 50 0.14 94
IX.SRN3.HHN.02 2021-03-26T23:50:37.61 0.6 undecidable manual S 182 17.6712 118 0.6 43
IX.LIO3.HHZ. 2021-03-26T23:50:37.20 0.3 undecidable manual P 320 36.741 50 -0.17 70
IX.STN3.HNZ.02 2021-03-26T23:50:37.73 0.6 undecidable manual S 129 20.3685 115 -0.11 49
IX.NSC3.HHZ.02 2021-03-26T23:50:37.05 0.3 undecidable manual P 308 36.4413 50 -0.28 69
IV.SGO.HHZ. 2021-03-26T23:50:37.38 0.6 undecidable manual S 235 16.1727 120 0.82 40
IV.SNAL.HHZ. 2021-03-26T23:50:37.31 0.1 undecidable manual P 326 37.7289 50 -0.23 92
IV.VULT.HHN. 2021-03-26T23:50:37.45 0.1 undecidable manual P 20 36.6411 50 0.08 95
IX.CSG3.HNZ.01 2021-03-26T23:50:37.92 0.6 undecidable manual S 360 19.1697 116 0.44 45
IX.MRN3.HNE.01 2021-03-26T23:50:36.55 0.3 undecidable manual P 137 33.1446 50 -0.28 69
IT.SLC1.HGN. 2021-03-26T23:50:36.14 0.3 undecidable manual P 158 29.9478 50 -0.19 71
IX.CGG3.HNE. 2021-03-26T23:50:36.30 0.3 undecidable manual S 157 12.4764 127 0.82 60
IX.CLT3.HHZ.02 2021-03-26T23:50:36.44 0.3 undecidable manual P 350 29.0487 108 0.25 70
IX.CMP3.HNE.02 2021-03-26T23:50:36.36 0.1 undecidable manual P 271 32.3454 50 -0.34 91
IV.SLCN.HHZ. 2021-03-26T23:50:36.26 0.1 undecidable manual P 153 31.6461 50 -0.35 91
IV.PZUN.HHZ. 2021-03-26T23:50:36.66 0.3 undecidable manual P 90 28.8489 108 0.5 66
IX.TEGI.HNN.01 2021-03-26T23:50:36.12 0.3 undecidable manual P 168 30.0477 50 -0.24 70
IX.PGN3.HHZ.02 2021-03-26T23:50:36.14 0.3 undecidable manual P 106 29.1486 108 -0.07 73
IX.BEL3.HNZ.01 2021-03-26T23:50:36.21 0.6 undecidable manual S 62 16.4724 119 -0.44 46
IV.CAGG.EHE. 2021-03-26T23:50:35.19 0.6 undecidable manual S 158 10.5783 131 0.23 48
IV.MCRV.HHZ. 2021-03-26T23:50:35.70 0.3 undecidable manual P 302 29.1486 108 -0.51 66
IX.COL3.HNN.02 2021-03-26T23:50:35.61 0.6 undecidable manual S 293 12.1767 127 0.22 48
IX.VDS3.HNE.01 2021-03-26T23:50:35.16 0.6 undecidable manual S 344 11.0778 130 0.06 50
IX.SNR3.HHZ.02 2021-03-26T23:50:35.14 0.1 undecidable manual P 294 24.9528 110 -0.27 94
IX.CSG3.HNZ.01 2021-03-26T23:50:34.40 0.3 undecidable manual P 360 19.1697 116 0.05 74
IX.PST3.HNE.02 2021-03-26T23:50:34.70 0.1 undecidable manual P 243 20.7681 114 0.06 98
IX.SCL3.HHN.02 2021-03-26T23:50:34.04 0.6 undecidable manual S 36 6.7932 144 -0.05 51
IV.MRLC.HHZ. 2021-03-26T23:50:34.96 0.6 undecidable manual S 10 12.4764 127 -0.53 45
IX.VDP3.HNZ.01 2021-03-26T23:50:34.89 0.3 undecidable manual S 116 10.1787 133 0.04 76
IX.SRN3.HHN.02 2021-03-26T23:50:34.16 0.1 positive manual P 182 17.6712 118 0.08 99
IX.SFL3.HNZ.01 2021-03-26T23:50:34.95 0.3 undecidable manual P 31 18.5703 117 0.7 62
IV.CDRU.HHN. 2021-03-26T23:50:34.73 0.1 positive manual P 218 21.867 113 -0.11 97
IX.STN3.HNZ.02 2021-03-26T23:50:34.22 0.1 undecidable manual P 129 20.3685 115 -0.34 93
IX.COL3.HNN.02 2021-03-26T23:50:33.09 0.1 undecidable manual P 293 12.1767 127 -0.05 100
IX.BEL3.HNZ.01 2021-03-26T23:50:33.84 0.3 undecidable manual P 62 16.4724 119 -0.03 75
IX.CGG3.HNE. 2021-03-26T23:50:33.44 0.1 undecidable manual P 157 12.4764 127 0.24 96
IV.SGO.HHZ. 2021-03-26T23:50:33.94 0.1 positive manual P 235 16.1727 120 0.12 98
IX.VDS3.HNE.01 2021-03-26T23:50:32.74 0.1 undecidable manual P 344 11.0778 130 -0.23 97
IV.CAGG.EHE. 2021-03-26T23:50:32.99 0.1 undecidable manual P 158 10.5783 131 0.1 99
IV.MRLC.HHZ. 2021-03-26T23:50:32.79 0.1 negative manual P 10 12.4764 127 -0.41 93
IX.VDP3.HNZ.01 2021-03-26T23:50:32.74 0.1 undecidable manual P 116 10.1787 133 -0.09 100
IX.SCL3.HHN.02 2021-03-26T23:50:31.82 0.1 negative manual P 36 6.7932 144 -0.57 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HNN. ML:1.4 0.0003162701 0.1664 AML other m 2021-03-26T23:50:35.03
IV.MRLC.HHN. ML:1.8 0.00067683915 0.1664 AML other m 2021-03-26T23:50:35.03
IV.MRLC.HHE. ML:1.5 0.0003677902 0.1408 AML other m 2021-03-26T23:50:35.18
IV.MRLC.HNE. ML:1.2 0.00017267369999999997 0.1408 AML other m 2021-03-26T23:50:35.18
IV.SGO.HHE. ML:2.0 0.0008768077999999999 0.128 AML other m 2021-03-26T23:50:37.57
IV.SGO.HNN. ML:2.2 0.0013025530000000001 0.1792 AML other m 2021-03-26T23:50:37.72
IV.SGO.HHN. ML:2.2 0.0013973304999999997 0.1792 AML other m 2021-03-26T23:50:37.63
IV.SGO.HNE. ML:1.5 0.00028002729999999996 0.2048 AML other m 2021-03-26T23:50:37.66
IV.SLCN.HHN. ML:1.5 0.00016143335 1.2416 AML other m 2021-03-26T23:50:42.34
IV.SLCN.HNN. ML:2.0 0.00040670414999999997 1.0496 AML other m 2021-03-26T23:50:42.66
IV.ACER.HHN. ML:1.7 0.00014491314999999998 0.6144 AML other m 2021-03-26T23:50:45.79
IV.ACER.HHE. ML:1.6 0.00011829567 0.64 AML other m 2021-03-26T23:50:45.61
IV.ACER.HNN. ML:1.8 0.00018312814999999998 0.4736 AML other m 2021-03-26T23:50:46.02
IV.MCEL.HHN. ML:1.3 0.000053674635 0.7424 AML other m 2021-03-26T23:50:46.78
IV.MCEL.HNN. ML:1.7 0.00014191694999999999 0.4736 AML other m 2021-03-26T23:50:47.17
IV.MCEL.HNE. ML:2.0 0.0002715 0.36 AML other m 2021-03-26T23:50:49.23
IV.MCEL.HHE. ML:1.5 0.00009125 0.5 AML other m 2021-03-26T23:50:50.09
IV.SIRI.HHN. ML:1.5 0.0000659771 0.1792 AML other m 2021-03-26T23:50:50.70
IV.SIRI.HNN. ML:1.5 0.00006513485499999999 0.1792 AML other m 2021-03-26T23:50:50.70
IV.SIRI.HHE. ML:1.5 0.000058680575 0.448 AML other m 2021-03-26T23:50:51.27
IV.SNAL.HNN. ML:2.0 0.00034050000000000004 1.3 AML other m 2021-03-26T23:50:53.81
IV.SNAL.HHE. ML:1.8 0.0002445 0.72 AML other m 2021-03-26T23:50:53.80
IV.SNAL.HNE. ML:1.8 0.00022749999999999997 0.74 AML other m 2021-03-26T23:50:53.81
IV.SNAL.HHN. ML:1.9 0.0003175 1.04 AML other m 2021-03-26T23:50:54.79
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