Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 26-12-2021 and time 02:03:05 (Italy) in region 1 km SW Orria (SA)

A magnitude ML 1.4 earthquake occured in region: 1 km SW Orria (SA), on

  • 26-12-2021 01:03:05 (UTC)
  • 26-12-2021 02:03:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.2910, 15.1680 at 6 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
Orria SA 1 1089 1089
Perito SA 2 931 2020
Gioi SA 4 1278 3298
Salento SA 5 1977 5275
Cicerale SA 7 1220 6495
Stio SA 8 872 7367
Castelnuovo Cilento SA 8 2732 10099
Rutino SA 8 842 10941
Omignano SA 8 1645 12586
Lustra SA 8 1075 13661
Sessa Cilento SA 9 1337 14998
Magliano Vetere SA 9 695 15693
Monteforte Cilento SA 9 564 16257
Stella Cilento SA 9 738 16995
Prignano Cilento SA 9 1018 18013
Moio della Civitella SA 10 1827 19840
Torchiara SA 10 1871 21711
Campora SA 11 439 22150
Laureana Cilento SA 11 1174 23324
Vallo della Lucania SA 11 8531 31855
Felitto SA 11 1283 33138
Cannalonga SA 12 1063 34201
Casal Velino SA 12 5268 39469
Ogliastro Cilento SA 12 2270 41739
Serramezzana SA 13 331 42070
San Mauro Cilento SA 13 889 42959
Novi Velia SA 13 2324 45283
Giungano SA 13 1280 46563
Perdifumo SA 13 1790 48353
Ceraso SA 13 2397 50750
Trentinara SA 13 1646 52396
Pollica SA 14 2393 54789
Castel San Lorenzo SA 15 2471 57260
Laurino SA 15 1548 58808
Roccadaspide SA 15 7209 66017
Agropoli SA 16 21481 87498
Ascea SA 16 5820 93318
Capaccio Paestum SA 17 22810 116128
Montecorice SA 17 2628 118756
Valle dell'Angelo SA 18 248 119004
Cuccaro Vetere SA 18 573 119577
Castellabate SA 19 9188 128765
Aquara SA 19 1545 130310
Piaggine SA 19 1311 131621
Bellosguardo SA 19 794 132415
Roscigno SA 19 817 133232

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Battipaglia (50786 inhabitants)
55 Km SE of Salerno (135261 inhabitants)
60 Km SE of Cava de' Tirreni (53659 inhabitants)
67 Km SW of Potenza (67122 inhabitants)
74 Km SE of Castellammare di Stabia (66466 inhabitants)
74 Km SE of Scafati (50787 inhabitants)
76 Km SE of Avellino (54857 inhabitants)
87 Km SE of Torre del Greco (86275 inhabitants)
90 Km SE of Ercolano (53709 inhabitants)
91 Km SE of Portici (55274 inhabitants)
99 Km SE of Napoli (974074 inhabitants)
99 Km SE of Benevento (60091 inhabitants)
99 Km SE 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 1.4 2021-12-26
01:03:05		 40.2908 15.1678 6 2022-03-30
13:04:41		 Bollettino Sismico Italiano INGV 101976961
Reviewed
Rev100 		ML 1.8 2021-12-26
01:03:05		 40.2908 15.1678 6 2021-12-26
01:26:53		 Sala Sismica INGV-Roma 98986681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-26 01:03:05 ± 0.2
Latitude 40.2908 ± 0.0054
Longitude 15.1678 ± 0.0118
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101976961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1032
Semi-minor axis of confidence ellipse (meter) 311
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 5.80242
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 98986681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-26 01:26:53

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 101976961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-14 16:10:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CPGN.EHZ. 2021-12-26T01:04:25.38 3.0 undecidable manual Sn -1.46 0
OX.SABO.HNZ. 2021-12-26T01:04:22.93 3.0 undecidable manual P 644.0664 -9.99 0
IV.RESU.HHZ. 2021-12-26T01:04:11.69 3.0 undecidable manual Sn -0.53 0
IV.FIR.HHZ. 2021-12-26T01:03:50.39 3.0 undecidable manual P 503.2185 -9.99 0
IV.MMUR.HNZ. 2021-12-26T01:03:46.26 3.0 undecidable manual P 392.8068 -9.99 0
IV.CSP1.EHZ. 2021-12-26T01:03:43.98 3.0 positive manual P 350.6823 -9.99 0
IV.MTGR.HHZ. 2021-12-26T01:03:40.13 3.0 undecidable manual P 337.3068 -9.99 0
IV.MCEL.HHZ. 2021-12-26T01:03:23.74 1.0 undecidable manual S 86 53.8017 50 0.31 23
IV.MCRV.HHZ. 2021-12-26T01:03:23.37 0.3 undecidable manual S 0 54.501 50 -0.27 68
IV.MTSN.HNN. 2021-12-26T01:03:22.39 0.6 undecidable manual S 93 49.5171 50 0.11 48
IV.SLCN.HNN. 2021-12-26T01:03:19.83 0.3 undecidable manual S 74 40.8258 98 0.03 74
IV.MGR.HHZ. 2021-12-26T01:03:17.93 0.3 undecidable manual S 117 36.8298 99 -0.5 67
IV.BULG.HHE. 2021-12-26T01:03:16.23 0.3 undecidable manual S 143 29.5482 101 0.29 71
IV.MCRV.HHZ. 2021-12-26T01:03:16.26 0.3 undecidable manual P 0 54.501 50 0.29 68
IV.SGO.HHE. 2021-12-26T01:03:16.39 0.3 undecidable manual S 21 32.1456 101 -0.44 69
IV.MTSN.HNN. 2021-12-26T01:03:15.57 0.1 undecidable manual P 93 49.5171 50 0.38 90
IV.MCEL.HHZ. 2021-12-26T01:03:15.69 0.1 undecidable manual P 86 53.8017 50 -0.16 94
IV.CDRU.HHZ. 2021-12-26T01:03:14.41 0.3 undecidable manual S 28 24.8529 103 0.04 76
IV.SLCN.HNN. 2021-12-26T01:03:13.49 0.1 undecidable manual P 74 40.8258 98 -0.26 94
IV.SGO.HHE. 2021-12-26T01:03:12.20 0.3 undecidable manual P 21 32.1456 101 0.16 73
IV.MGR.HHZ. 2021-12-26T01:03:12.46 0.1 undecidable manual P 117 36.8298 99 -0.5 90
IV.BULG.HHE. 2021-12-26T01:03:11.48 0.1 undecidable manual P 143 29.5482 101 -0.04 100
IV.CDRU.HHZ. 2021-12-26T01:03:10.70 0.1 undecidable manual P 28 24.8529 103 0.09 100
IV.CMPR.HHE. 2021-12-26T01:03:10.51 0.3 undecidable manual S 75 11.7771 117 0.43 71
IV.CMPR.HHE. 2021-12-26T01:03:08.42 0.1 undecidable manual P 75 11.7771 117 0.28 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CDRU.HNN. ML:1.2 0.0001031 0.22 AML other m 2021-12-26T01:03:14.81
IV.CDRU.HHN. ML:1.2 0.00010935 1.26 AML other m 2021-12-26T01:03:14.71
IV.CDRU.HHE. ML:1.6 0.0002355 0.1 AML other m 2021-12-26T01:03:15.01
IV.CDRU.HNE. ML:1.6 0.0002318 0.7 AML other m 2021-12-26T01:03:15.01
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