Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 22-12-2021 and time 18:40:49 (Italy) in region 1 km E Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 1 km E Norcia (PG), on

  • 22-12-2021 17:40:49 (UTC)
  • 22-12-2021 18:40:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 13.1040 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
Norcia PG 1 4957 4957
Cascia PG 11 3217 8174
Preci PG 11 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Cerreto di Spoleto PG 16 1075 10254
Accumoli RI 16 667 10921
Arquata del Tronto AP 16 1178 12099
Visso MC 16 1107 13206
Poggiodomo PG 16 117 13323
Ussita MC 18 444 13767
Sellano PG 18 1079 14846
Cittareale RI 20 482 15328
Montegallo AP 20 523 15851
Monteleone di Spoleto PG 20 599 16450
Vallo di Nera PG 20 364 16814

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
100 Km W of Chieti (51815 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 2.0 2021-12-22
17:40:49		 42.7893 13.1042 9 2022-03-30
13:04:26		 Bollettino Sismico Italiano INGV 99329121
Reviewed
Rev100 		ML 2.0 2021-12-22
17:40:49		 42.7942 13.1013 9 2021-12-22
17:46:24		 Sala Sismica INGV-Roma 98825801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-22 17:40:49 ± 0.04
Latitude 42.7893 ± 0.0018
Longitude 13.1042 ± 0.0037
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 99329121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 232
Semi-minor axis of confidence ellipse (meter) 151
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43
Number of associated phases, regardless of their use for origin computation 72
Number of defining phases 66
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.90562
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 37
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 78
Type of magnitude ML
Reference to an origin 98825801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-22 17:46:24

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 74
Type of magnitude ML
Reference to an origin 99329121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-06 08:49:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.ORP.HGZ. 2021-12-22T17:42:00.80 3.0 undecidable manual Sg 7.13 0
IV.FIR.HHZ. 2021-12-22T17:41:39.77 3.0 undecidable manual Sn -0.48 0
GU.GSCL.HHZ. 2021-12-22T17:41:34.57 3.0 undecidable manual Pg 6.44 0
IV.IMOL.HNZ. 2021-12-22T17:41:26.15 3.0 positive manual Pg 5.57 0
IV.LPEL.HHZ. 2021-12-22T17:41:10.28 3.0 positive manual P -0.01 0
IV.CING.HHZ. 2021-12-22T17:41:10.72 0.6 undecidable manual S 6 65.49 50 0.66 39
IV.CAFI.HHZ. 2021-12-22T17:41:09.42 3.0 positive manual P 0.65 0
IV.EL6.EHZ. 2021-12-22T17:41:09.01 0.6 undecidable manual S 360 59.8956 50 0.43 43
IV.ATCC.EHZ. 2021-12-22T17:41:08.96 0.6 undecidable manual S 320 57.8976 50 0.93 36
IV.FIAM.HHZ. 2021-12-22T17:41:08.10 0.6 undecidable manual S 179 57.7977 50 0.08 46
IV.NARO.HHZ. 2021-12-22T17:41:07.07 0.3 undecidable manual P 335 100.5216 50 0.22 62
IV.SNTG.HHZ. 2021-12-22T17:41:07.00 0.6 undecidable manual S 346 53.3022 50 0.18 46
IV.MPAG.EHZ. 2021-12-22T17:41:06.80 0.3 undecidable manual P 343 97.2249 50 0.45 60
IV.CESX.HHZ. 2021-12-22T17:41:05.10 0.3 undecidable manual S 245 46.7199 50 0.05 72
IV.ASSB.HHZ. 2021-12-22T17:41:04.60 0.6 undecidable manual S 308 45.8208 50 -0.21 46
IV.TERO.HHZ. 2021-12-22T17:41:04.00 0.6 undecidable manual S 114 44.7219 50 -0.53 43
IV.SAP2.EHZ. 2021-12-22T17:41:04.40 0.6 undecidable manual S 35 41.625 50 0.69 41
IV.T0110.HHZ. 2021-12-22T17:41:04.36 0.3 undecidable manual P 138 82.9503 50 0.21 65
IV.MOMA.HHZ. 2021-12-22T17:41:04.40 0.6 undecidable manual S 272 43.5231 50 0.2 47
IV.ARVD.HHZ. 2021-12-22T17:41:03.53 0.3 undecidable manual P 351 79.7646 50 -0.12 66
IV.SSFR.HHZ. 2021-12-22T17:41:03.10 0.3 undecidable manual P 340 76.368 50 -0.03 68
IV.ARRO.EHZ. 2021-12-22T17:41:02.10 0.3 undecidable manual S 230 36.1416 50 -0.13 72
IV.GUMA.HHZ. 2021-12-22T17:41:02.30 0.6 undecidable manual S 32 35.6421 50 0.19 47
IT.FOPC.HGN. 2021-12-22T17:41:02.98 0.6 undecidable manual S 302 38.2284 50 0.18 47
IV.MURB.HHZ. 2021-12-22T17:41:02.33 0.3 undecidable manual P 318 70.4739 50 0.1 68
IV.MML1.EHZ. 2021-12-22T17:41:02.10 0.6 undecidable manual S 343 37.5291 50 -0.5 44
IV.MF5.EHZ. 2021-12-22T17:41:02.90 0.6 undecidable manual S 53 36.3414 50 0.61 42
IV.CAMP.HHZ. 2021-12-22T17:41:02.40 0.3 undecidable manual S 138 37.5291 50 -0.21 70
IV.FAGN.HHZ. 2021-12-22T17:41:02.55 0.3 undecidable manual P 146 70.0743 50 0.39 64
IV.CSP1.EHZ. 2021-12-22T17:41:01.40 0.6 undecidable manual S 14 34.5432 50 -0.41 45
IV.RM33.EHZ. 2021-12-22T17:41:01.10 0.6 undecidable manual S 164 32.3454 50 -0.13 48
IV.CING.HHZ. 2021-12-22T17:41:01.24 0.3 undecidable manual P 6 65.49 50 -0.21 67
IV.FOSV.EHZ. 2021-12-22T17:41:00.77 0.1 undecidable manual P 334 62.5929 50 -0.24 89
IV.EL6.EHZ. 2021-12-22T17:41:00.41 0.1 undecidable manual P 360 59.8956 50 -0.19 91
IV.ATCC.EHZ. 2021-12-22T17:41:00.14 0.1 undecidable manual P 320 57.8976 50 -0.14 92
IV.SNTG.HHZ. 2021-12-22T17:40:59.32 0.1 undecidable manual P 346 53.3022 50 -0.26 90
IV.FDMO.HHZ. 2021-12-22T17:40:59.30 0.3 undecidable manual S 357 27.4503 108 -0.43 68
IV.SMA1.EHZ. 2021-12-22T17:40:59.10 0.6 undecidable manual S 133 25.752 109 -0.08 49
IV.FIAM.HHZ. 2021-12-22T17:40:59.95 0.3 undecidable manual P 179 57.7977 50 -0.33 66
IV.CESI.HHZ. 2021-12-22T17:40:59.80 0.6 undecidable manual S 326 28.8489 107 -0.4 46
IV.MTRA.EHZ. 2021-12-22T17:40:58.50 0.3 undecidable manual S 99 24.0537 111 -0.13 73
IV.ASSB.HHZ. 2021-12-22T17:40:58.16 0.3 undecidable manual P 308 45.8208 50 -0.26 69
IV.TERO.HHZ. 2021-12-22T17:40:58.00 0.3 undecidable manual P 114 44.7219 50 -0.26 69
IT.MTCL.HGZ. 2021-12-22T17:40:58.40 0.6 undecidable manual S 339 24.2535 111 -0.28 47
IV.SAP2.EHZ. 2021-12-22T17:40:58.13 0.3 undecidable manual P 35 41.625 50 0.34 68
IV.CESX.HHZ. 2021-12-22T17:40:58.80 0.3 undecidable manual P 245 46.7199 50 0.24 69
IV.MOMA.HHZ. 2021-12-22T17:40:58.05 0.3 undecidable manual P 272 43.5231 50 -0.02 72
IV.MMO1.EHZ. 2021-12-22T17:40:57.80 0.3 undecidable manual S 56 21.867 113 -0.1 74
IV.FEMA.HNE. 2021-12-22T17:40:57.15 0.6 undecidable manual S 347 19.6692 115 -0.06 50
IV.GUMA.HHZ. 2021-12-22T17:40:57.07 0.1 negative manual P 32 35.6421 50 0.21 94
IV.GAVE.EHZ. 2021-12-22T17:40:57.60 0.3 undecidable manual S 238 20.1687 114 0.22 72
IT.FOPC.HGN. 2021-12-22T17:40:57.01 0.3 undecidable manual P 302 38.2284 50 -0.25 70
IV.MF5.EHZ. 2021-12-22T17:40:57.44 0.3 undecidable manual P 53 36.3414 50 0.48 67
IV.LNSS.HHZ. 2021-12-22T17:40:57.80 0.3 undecidable manual S 194 21.3675 113 0.06 75
IV.ARRO.EHZ. 2021-12-22T17:40:56.87 0.1 undecidable manual P 230 36.1416 50 -0.06 97
IV.RM33.EHZ. 2021-12-22T17:40:56.12 0.3 undecidable manual P 164 32.3454 50 -0.23 71
IV.MML1.EHZ. 2021-12-22T17:40:56.87 0.1 positive manual P 343 37.5291 50 -0.28 93
IV.CAMP.HHZ. 2021-12-22T17:40:56.87 0.3 undecidable manual P 138 37.5291 50 -0.28 69
IV.CSP1.EHZ. 2021-12-22T17:40:56.45 0.1 positive manual P 14 34.5432 50 -0.24 94
IV.FDMO.HHZ. 2021-12-22T17:40:55.32 0.1 positive manual P 357 27.4503 108 -0.17 96
IV.CESI.HHZ. 2021-12-22T17:40:55.62 0.1 positive manual P 326 28.8489 107 -0.14 97
IV.MC2.EHZ. 2021-12-22T17:40:55.80 0.3 undecidable manual S 27 15.1737 121 -0.04 76
IT.MTCL.HGZ. 2021-12-22T17:40:54.82 0.1 positive manual P 339 24.2535 111 -0.06 99
IV.GAVE.EHZ. 2021-12-22T17:40:54.43 0.1 negative manual P 238 20.1687 114 0.3 95
IV.SMA1.EHZ. 2021-12-22T17:40:54.96 0.3 undecidable manual P 133 25.752 109 -0.21 72
IV.LNSS.HHZ. 2021-12-22T17:40:54.53 0.1 positive manual P 194 21.3675 113 0.19 97
IV.FEMA.HNE. 2021-12-22T17:40:54.12 0.1 undecidable manual P 347 19.6692 115 0.09 99
IV.MTRA.EHZ. 2021-12-22T17:40:54.90 0.3 undecidable manual P 99 24.0537 111 0.05 75
IV.MMO1.EHZ. 2021-12-22T17:40:54.47 0.1 negative manual P 56 21.867 113 0.04 100
IV.NRCA.HNZ. 2021-12-22T17:40:53.30 0.3 undecidable manual S 10 4.995 151 0.01 78
IV.MC2.EHZ. 2021-12-22T17:40:53.65 0.1 positive manual P 27 15.1737 121 0.41 94
IV.NRCA.HNZ. 2021-12-22T17:40:52.12 0.1 negative manual P 10 4.995 151 0.35 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.7 0.008795 0.12 AML other m 2021-12-22T17:40:53.52
IV.NRCA.HHE. ML:2.6 0.008395 0.12 AML other m 2021-12-22T17:40:53.52
IV.NRCA.HHN. ML:2.8 0.01275 0.12 AML other m 2021-12-22T17:40:53.52
IV.NRCA.HNN. ML:2.8 0.011349999999999999 0.12 AML other m 2021-12-22T17:40:53.52
IV.MC2.EHE. ML:2.6 0.0038 0.28 AML other m 2021-12-22T17:40:57.77
IV.MC2.EHN. ML:2.6 0.0034649999999999998 0.36 AML other m 2021-12-22T17:40:57.64
IV.MMO1.EHN. ML:2.1 0.0008240000000000001 0.72 AML other m 2021-12-22T17:40:58.05
IV.GAVE.HNN. ML:1.8 0.0004255 0.2 AML other m 2021-12-22T17:40:58.20
IV.GAVE.EHN. ML:2.2 0.00125 0.2 AML other m 2021-12-22T17:40:58.20
IV.LNSS.HHE. ML:2.4 0.00175 0.42 AML other m 2021-12-22T17:40:58.27
IV.LNSS.HNE. ML:2.4 0.0017 0.42 AML other m 2021-12-22T17:40:58.28
IV.LNSS.HNN. ML:2.3 0.001385 0.32 AML other m 2021-12-22T17:40:58.66
IV.LNSS.HHN. ML:2.3 0.00152 0.3 AML other m 2021-12-22T17:40:58.66
IV.GAVE.EHE. ML:2.2 0.00132 0.24 AML other m 2021-12-22T17:40:59.25
IV.MTRA.HNN. ML:2.2 0.001035 0.62 AML other m 2021-12-22T17:40:59.43
IV.MTRA.EHN. ML:2.2 0.0010135 0.62 AML other m 2021-12-22T17:40:59.43
IV.FDMO.HHN. ML:2.0 0.0006005 0.44 AML other m 2021-12-22T17:40:59.54
IV.GAVE.HNE. ML:2.3 0.0014199999999999998 0.82 AML other m 2021-12-22T17:40:59.37
IV.CESI.HHN. ML:2.1 0.0007275000000000001 1.74 AML other m 2021-12-22T17:41:00.10
IV.FDMO.HHE. ML:2.0 0.0005145 0.86 AML other m 2021-12-22T17:41:00.13
IV.MTRA.EHE. ML:2.2 0.000962 0.58 AML other m 2021-12-22T17:41:00.16
IV.MTRA.HNE. ML:2.2 0.000911 0.56 AML other m 2021-12-22T17:41:00.16
IV.CESI.HHE. ML:2.0 0.0005304999999999999 1.36 AML other m 2021-12-22T17:41:00.76
IV.MMO1.EHE. ML:1.9 0.000536 0.66 AML other m 2021-12-22T17:41:01.33
IV.SMA1.EHN. ML:2.0 0.000629 0.84 AML other m 2021-12-22T17:41:01.76
IV.CSP1.EHE. ML:2.6 0.0017000000000000001 0.54 AML other m 2021-12-22T17:41:02.35
IV.CSP1.EHN. ML:2.5 0.00127 0.42 AML other m 2021-12-22T17:41:02.48
IV.RM33.HNN. ML:2.0 0.000484 0.76 AML other m 2021-12-22T17:41:02.52
IV.RM33.EHN. ML:2.0 0.0004985 0.2 AML other m 2021-12-22T17:41:02.53
IV.MML1.EHN. ML:1.8 0.000256 0.9 AML other m 2021-12-22T17:41:02.15
IV.SMA1.EHE. ML:2.0 0.0006839999999999999 0.46 AML other m 2021-12-22T17:41:02.58
IV.GUMA.HHE. ML:2.3 0.0007875 1.52 AML other m 2021-12-22T17:41:03.92
IV.RM33.EHE. ML:1.9 0.00032999999999999994 1.2 AML other m 2021-12-22T17:41:03.18
IV.RM33.HNE. ML:1.9 0.000358 1.18 AML other m 2021-12-22T17:41:03.77
IV.ARRO.EHE. ML:1.7 0.0001915 0.88 AML other m 2021-12-22T17:41:03.52
IV.ARRO.EHN. ML:1.7 0.000202 0.16 AML other m 2021-12-22T17:41:03.62
IV.GUMA.HNN. ML:2.2 0.0006984999999999999 1.02 AML other m 2021-12-22T17:41:04.44
IV.CAMP.HHN. ML:1.5 0.0001144 0.52 AML other m 2021-12-22T17:41:04.84
IV.MML1.EHE. ML:1.7 0.000185 0.8 AML other m 2021-12-22T17:41:04.60
IV.SAP2.EHN. ML:2.8 0.002315 0.16 AML other m 2021-12-22T17:41:04.80
IV.SAP2.EHE. ML:2.0 0.000356 1.46 AML other m 2021-12-22T17:41:05.07
IV.GUMA.HHN. ML:2.3 0.0008160000000000001 0.46 AML other m 2021-12-22T17:41:05.40
IV.ASSB.HHE. ML:1.9 0.00020800000000000001 0.2 AML other m 2021-12-22T17:41:05.70
IV.CAMP.HHE. ML:1.5 0.000132 0.98 AML other m 2021-12-22T17:41:05.30
IV.GUMA.HNE. ML:2.2 0.000744 1 AML other m 2021-12-22T17:41:05.39
IV.MOMA.HHE. ML:1.9 0.00023199999999999997 1.7 AML other m 2021-12-22T17:41:05.93
IV.MOMA.HNE. ML:1.9 0.00023 1.7 AML other m 2021-12-22T17:41:05.93
IV.CESX.HHE. ML:1.6 0.00011075 0.96 AML other m 2021-12-22T17:41:06.03
IV.MOMA.HHN. ML:2.0 0.000284 0.7 AML other m 2021-12-22T17:41:06.51
IV.ASSB.HHN. ML:2.0 0.00026900000000000003 1.7 AML other m 2021-12-22T17:41:06.95
IV.MOMA.HNN. ML:2.0 0.0003135 0.48 AML other m 2021-12-22T17:41:07.50
IV.CESX.HHN. ML:1.6 0.0001235 0.66 AML other m 2021-12-22T17:41:07.36
IV.SNTG.HHN. ML:1.6 0.00008929999999999999 1.14 AML other m 2021-12-22T17:41:08.09
IV.SNTG.HHE. ML:1.6 0.00008599999999999999 1.18 AML other m 2021-12-22T17:41:08.89
IV.FIAM.HHE. ML:1.4 0.00005965 1.76 AML other m 2021-12-22T17:41:08.03
IV.ATCC.EHE. ML:1.8 0.00013925 0.72 AML other m 2021-12-22T17:41:10.60
IV.ATCC.EHN. ML:1.8 0.00013800000000000002 0.64 AML other m 2021-12-22T17:41:10.10
IV.FIAM.HHN. ML:1.4 0.00005595 1.14 AML other m 2021-12-22T17:41:10.67
IV.EL6.EHE. ML:2.2 0.000292 0.58 AML other m 2021-12-22T17:41:11.03
IV.CING.HHE. ML:1.7 0.00008765 0.9 AML other m 2021-12-22T17:41:12.24
IV.EL6.EHN. ML:2.1 0.0002415 1.14 AML other m 2021-12-22T17:41:12.91
IV.FOSV.EHE. ML:1.5 0.0000644 1.04 AML other m 2021-12-22T17:41:12.88
IV.CING.HHN. ML:1.6 0.00007645 0.7 AML other m 2021-12-22T17:41:14.47
IV.SSFR.HHN. ML:2.0 0.000142 0.22 AML other m 2021-12-22T17:41:16.62
IV.FAGN.HHE. ML:2.1 0.00023 0.3 AML other m 2021-12-22T17:41:16.61
IV.MURB.HHN. ML:2.1 0.000221 0.24 AML other m 2021-12-22T17:41:16.98
IV.FOSV.EHN. ML:1.6 0.00007694999999999999 1.34 AML other m 2021-12-22T17:41:16.93
IV.SSFR.HHE. ML:2.0 0.0001545 0.42 AML other m 2021-12-22T17:41:17.01
IV.MURB.HHE. ML:2.1 0.000222 0.96 AML other m 2021-12-22T17:41:20.54
IV.FAGN.HHN. ML:1.8 0.00011735 1.4 AML other m 2021-12-22T17:41:22.89
IV.T0110.HHE. ML:1.9 0.00010835 0.48 AML other m 2021-12-22T17:41:24.70
IV.T0110.HHN. ML:1.8 0.00009120000000000001 1.52 AML other m 2021-12-22T17:41:24.80
IV.CAFI.HHN. ML:1.6 0.000031 1.4 AML other m 2021-12-22T17:41:26.20
IV.CAFI.HHE. ML:1.6 0.0000317 0.42 AML other m 2021-12-22T17:41:44.21
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
Waveforms Seismic signals in miniseed + resp format Download