Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 26-12-2017 and time 12:48:28 (Italy) in region 8 km SE Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 8 km SE Norcia (PG), on

  • 26-12-2017 11:48:28 (UTC)
  • 26-12-2017 12:48:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7310, 13.1420 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
Norcia PG 8 4957 4957
Accumoli RI 10 667 5624
Cascia PG 11 3217 8841
Cittareale RI 13 482 9323
Arquata del Tronto AP 14 1178 10501
Amatrice RI 16 2657 13158
Poggiodomo PG 17 117 13275
Monteleone di Spoleto PG 18 599 13874
Castelsantangelo sul Nera MC 18 281 14155
Preci PG 19 724 14879

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SE of Foligno (57155 inhabitants)
45 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
47 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km W of Pescara (121014 inhabitants)
94 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 1.9 2017-12-26
11:48:28		 42.7307 13.1422 10 2019-03-25
14:09:20		 Bollettino Sismico Italiano INGV 61964491
Reviewed
Rev100 		ML 2.0 2017-12-26
11:48:28		 42.7388 13.144 11 2017-12-26
12:54:06		 Sala Sismica INGV-Roma 52823151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-26 11:48:28 ± 0.05
Latitude 42.7307 ± 0.0027
Longitude 13.1422 ± 0.0049
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 61964491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 31
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.91281
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 52823151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-26 12:54:06

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 64
Type of magnitude ML
Reference to an origin 61964491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-10-15 10:27:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2017-12-26T11:48:49.60 0.6 undecidable manual S 357 66.4779 50 0.75 37
IV.INTR.HHZ. 2017-12-26T11:48:45.60 0.3 undecidable manual P 142 101.3208 50 0 64
IV.MOMA.HHZ. 2017-12-26T11:48:44.42 0.6 undecidable manual S 280 47.3193 50 0.7 39
IV.MF5.EHZ. 2017-12-26T11:48:42.37 0.6 undecidable manual S 42 38.4282 50 1 35
IV.GUMA.HHZ. 2017-12-26T11:48:42.55 0.6 undecidable manual S 23 40.0266 50 0.76 39
IV.TERO.HHZ. 2017-12-26T11:48:41.47 0.6 undecidable manual S 107 39.5271 50 -0.18 46
IV.T0110.HHZ. 2017-12-26T11:48:41.48 0.3 undecidable manual P 137 76.0683 50 -0.22 64
IV.CSP1.EHZ. 2017-12-26T11:48:41.93 0.6 undecidable manual S 7 40.3263 50 0.05 47
IV.CING.HHZ. 2017-12-26T11:48:41.21 0.3 undecidable manual P 3 71.6727 50 0.19 65
IV.TRTR.HHZ. 2017-12-26T11:48:40.93 0.3 undecidable manual P 82 63.3921 50 1.17 46
IV.EL6.EHZ. 2017-12-26T11:48:40.18 0.3 undecidable manual P 357 66.4779 50 -0.05 68
IV.ARRO.EHZ. 2017-12-26T11:48:40.00 0.6 undecidable manual S 241 35.0427 50 -0.45 44
IV.VCEL.EHZ. 2017-12-26T11:48:40.12 0.3 undecidable manual P 123 68.1762 50 -0.37 63
IV.CESI.HHZ. 2017-12-26T11:48:40.52 0.6 undecidable manual S 328 36.0417 50 -0.2 46
IV.T1247.HHZ. 2017-12-26T11:48:40.61 0.6 undecidable manual S 158 34.5432 50 0.29 46
IV.FDMO.HHZ. 2017-12-26T11:48:39.80 0.6 undecidable manual S 353 34.2435 50 -0.43 44
IV.SNTG.HHZ. 2017-12-26T11:48:39.20 0.3 undecidable manual P 344 60.3951 50 -0.09 68
IV.T1221.EHZ. 2017-12-26T11:48:38.35 0.6 undecidable manual S 301 28.0497 50 -0.23 47
IV.CAMP.HHZ. 2017-12-26T11:48:38.96 0.6 undecidable manual S 135 30.6471 50 -0.34 45
IV.FIAM.HHZ. 2017-12-26T11:48:37.78 0.3 undecidable manual P 182 51.4152 50 -0.12 69
IV.MMO1.EHN. 2017-12-26T11:48:37.08 0.6 undecidable manual S 39 23.9538 113 -0.42 45
IV.MOMA.HHZ. 2017-12-26T11:48:37.31 0.1 undecidable manual P 280 47.3193 50 0.04 94
IV.CESX.HHZ. 2017-12-26T11:48:37.58 0.3 undecidable manual P 254 47.3193 50 0.31 67
IV.RM33.EHZ. 2017-12-26T11:48:37.71 0.6 undecidable manual S 166 25.2525 50 -0.14 48
IV.FEMA.HNE. 2017-12-26T11:48:37.97 0.6 undecidable manual S 344 26.751 50 -0.27 46
IV.MTRA.HNZ. 2017-12-26T11:48:36.05 0.6 undecidable manual S 82 20.9679 116 -0.47 45
IV.CSP1.EHZ. 2017-12-26T11:48:36.04 0.1 undecidable manual P 7 40.3263 50 -0.17 93
IV.MC2.EHZ. 2017-12-26T11:48:36.27 0.6 undecidable manual S 11 20.3685 117 -0.09 49
IV.MF5.EHZ. 2017-12-26T11:48:36.16 0.1 undecidable manual P 42 38.4282 50 0.25 91
IV.SMA1.EHZ. 2017-12-26T11:48:36.40 0.6 undecidable manual S 125 19.2696 118 0.38 46
IV.GUMA.HHZ. 2017-12-26T11:48:36.39 0.3 undecidable manual P 23 40.0266 50 0.24 68
IV.CESI.HHZ. 2017-12-26T11:48:35.39 0.1 positive manual P 328 36.0417 50 -0.14 94
IV.T1247.HHZ. 2017-12-26T11:48:35.16 0.1 undecidable manual P 158 34.5432 50 -0.14 94
IV.T1299.EHZ. 2017-12-26T11:48:35.28 0.6 undecidable manual S 133 15.6732 123 0.35 46
IV.TERO.HHZ. 2017-12-26T11:48:35.70 0.1 undecidable manual P 107 39.5271 50 -0.37 89
IV.LNSS.HHZ. 2017-12-26T11:48:35.31 0.6 undecidable manual S 210 16.4724 122 0.15 48
IV.ARRO.EHZ. 2017-12-26T11:48:35.28 0.3 undecidable manual P 241 35.0427 50 -0.1 71
IV.FDMO.HHZ. 2017-12-26T11:48:35.03 0.1 undecidable manual P 353 34.2435 50 -0.22 92
IV.T1221.EHZ. 2017-12-26T11:48:34.21 0.1 undecidable manual P 301 28.0497 50 -0.09 96
IV.CAMP.HHZ. 2017-12-26T11:48:34.48 0.1 undecidable manual P 135 30.6471 50 -0.23 93
IV.FEMA.HNE. 2017-12-26T11:48:34.43 0.3 undecidable manual P 344 26.751 50 0.33 69
IV.NRCA.HNZ. 2017-12-26T11:48:33.40 0.6 undecidable manual S 349 11.5773 131 -0.42 46
IV.MTRA.HNZ. 2017-12-26T11:48:33.00 0.1 undecidable manual P 82 20.9679 116 -0.11 97
IV.MMO1.EHN. 2017-12-26T11:48:33.43 0.1 undecidable manual P 39 23.9538 113 -0.24 94
IV.MC2.EHZ. 2017-12-26T11:48:33.01 0.1 undecidable manual P 11 20.3685 117 -0.01 99
IV.RM33.EHZ. 2017-12-26T11:48:33.75 0.1 undecidable manual P 166 25.2525 50 -0.13 96
IV.SMA1.EHZ. 2017-12-26T11:48:32.86 0.1 undecidable manual P 125 19.2696 118 0.04 99
IV.T1299.EHZ. 2017-12-26T11:48:32.47 0.1 positive manual P 133 15.6732 123 0.28 94
IV.T1214.EHZ. 2017-12-26T11:48:32.54 0.3 undecidable manual S 59 6.2937 148 -0.07 75
IV.LNSS.HHZ. 2017-12-26T11:48:32.62 0.1 undecidable manual P 210 16.4724 122 0.3 94
IV.T1214.EHZ. 2017-12-26T11:48:31.01 0.1 undecidable manual P 59 6.2937 148 0.16 98
IV.NRCA.HNZ. 2017-12-26T11:48:31.58 0.1 positive manual P 349 11.5773 131 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1214.HNE. ML:2.3 0.0032497125000000003 0.096 AML other m 2017-12-26T11:48:33.51
IV.T1214.EHN. ML:2.2 0.0022006635 0.096 AML other m 2017-12-26T11:48:32.74
IV.T1214.HNN. ML:2.1 0.0021765595 0.0832 AML other m 2017-12-26T11:48:32.74
IV.T1214.EHE. ML:2.3 0.0030245045 0.096 AML other m 2017-12-26T11:48:33.51
IV.NRCA.HHN. ML:2.5 0.004041054 0.1024 AML other m 2017-12-26T11:48:33.57
IV.NRCA.HNE. ML:2.6 0.0046586464999999995 0.2304 AML other m 2017-12-26T11:48:33.95
IV.NRCA.HHE. ML:2.6 0.004902147 0.2368 AML other m 2017-12-26T11:48:33.95
IV.NRCA.HNN. ML:2.5 0.0037886750000000005 0.1152 AML other m 2017-12-26T11:48:33.57
IV.T1299.HNE. ML:1.7 0.00047990615000000005 0.288 AML other m 2017-12-26T11:48:35.92
IV.T1299.EHE. ML:1.7 0.0004925667000000001 0.3008 AML other m 2017-12-26T11:48:35.92
IV.T1299.EHN. ML:1.8 0.0005494849 0.2752 AML other m 2017-12-26T11:48:36.65
IV.T1299.HNN. ML:1.8 0.00055408395 0.2496 AML other m 2017-12-26T11:48:36.65
IV.LNSS.HHE. ML:2.5 0.002907359 0.16 AML other m 2017-12-26T11:48:35.69
IV.LNSS.HHN. ML:2.4 0.0021615345000000003 0.1408 AML other m 2017-12-26T11:48:35.64
IV.SMA1.EHE. ML:2.2 0.0013608305000000001 0.4416 AML other m 2017-12-26T11:48:39.23
IV.SMA1.EHN. ML:2.1 0.0010612879 0.256 AML other m 2017-12-26T11:48:39.62
IV.MTRA.EHN. ML:2.2 0.0010204214999999998 0.1408 AML other m 2017-12-26T11:48:37.41
IV.MTRA.HNN. ML:2.2 0.00102431165 0.1408 AML other m 2017-12-26T11:48:37.48
IV.MTRA.HNE. ML:2.1 0.0008920790999999999 0.1024 AML other m 2017-12-26T11:48:36.80
IV.MTRA.EHE. ML:2.1 0.0008805389 0.1024 AML other m 2017-12-26T11:48:36.81
OB.GAVE.EHN. ML:0.0 0.0025994885 0.1408 AML other m 2017-12-26T11:48:36.74
OB.GAVE.EHE. ML:0.0 0.002141952 0.2624 AML other m 2017-12-26T11:48:38.39
IV.RM33.HNN. ML:2.0 0.0006248118 0.2624 AML other m 2017-12-26T11:48:38.64
IV.RM33.HNE. ML:2.0 0.0006723806999999999 0.16 AML other m 2017-12-26T11:48:38.42
IV.RM33.EHN. ML:2.0 0.0005996331500000001 0.256 AML other m 2017-12-26T11:48:38.65
IV.RM33.EHE. ML:2.0 0.00068190795 0.1408 AML other m 2017-12-26T11:48:38.42
IV.T1221.EHE. ML:1.8 0.00028951315 0.256 AML other m 2017-12-26T11:48:38.66
IV.T1221.EHN. ML:1.7 0.00024260219999999998 0.2112 AML other m 2017-12-26T11:48:38.64
IV.T1221.HNN. ML:1.6 0.00023094245000000003 0.2112 AML other m 2017-12-26T11:48:38.64
IV.CAMP.HHE. ML:1.3 0.000097300835 0.3648 AML other m 2017-12-26T11:48:43.58
IV.CAMP.HHN. ML:1.4 0.00011954755 0.2432 AML other m 2017-12-26T11:48:41.05
IV.FDMO.HHE. ML:1.7 0.00022064994999999998 0.1984 AML other m 2017-12-26T11:48:43.42
IV.FDMO.HHN. ML:1.6 0.00017556939999999999 0.224 AML other m 2017-12-26T11:48:40.53
IV.CESI.HHN. ML:1.9 0.00030971265 0.2176 AML other m 2017-12-26T11:48:40.00
IV.CESI.HHE. ML:1.9 0.0002818599 0.2624 AML other m 2017-12-26T11:48:42.49
IV.TERO.HNE. ML:1.6 0.0001326525 0.192 AML other m 2017-12-26T11:48:43.11
IV.TERO.HHE. ML:1.8 0.00019943815 0.0832 AML other m 2017-12-26T11:48:42.00
IV.TERO.HHN. ML:2.0 0.0003264875 0.0768 AML other m 2017-12-26T11:48:42.07
IV.TERO.HNN. ML:1.6 0.0001427717 0.0832 AML other m 2017-12-26T11:48:42.11
IV.MF5.EHN. ML:1.8 0.00022443660000000002 0.5824 AML other m 2017-12-26T11:48:49.65
IV.MF5.EHE. ML:1.8 0.00024951775 0.1792 AML other m 2017-12-26T11:48:43.70
IV.GUMA.HNE. ML:2.1 0.00044439925000000003 0.352 AML other m 2017-12-26T11:48:47.52
IV.GUMA.HNN. ML:2.2 0.0005643884 0.576 AML other m 2017-12-26T11:48:45.87
IV.GUMA.HHE. ML:2.2 0.000579343 0.3008 AML other m 2017-12-26T11:48:45.87
IV.GUMA.HHN. ML:2.2 0.0005392639499999999 0.5376 AML other m 2017-12-26T11:48:47.93
IV.MOMA.HHE. ML:2.2 0.00044413355 0.1792 AML other m 2017-12-26T11:48:45.61
IV.MOMA.HHN. ML:2.1 0.00035525355 0.16 AML other m 2017-12-26T11:48:46.16
IV.MOMA.HNN. ML:2.1 0.00034905365 0.1984 AML other m 2017-12-26T11:48:46.16
IV.MOMA.HNE. ML:2.2 0.00044997964999999993 0.1792 AML other m 2017-12-26T11:48:45.61
IV.CESX.HHE. ML:1.7 0.00014671020000000002 0.3008 AML other m 2017-12-26T11:48:47.66
IV.CESX.HHN. ML:1.7 0.0001445492 0.3008 AML other m 2017-12-26T11:48:47.07
IV.FIAM.HHE. ML:1.9 0.00019047285 0.224 AML other m 2017-12-26T11:48:46.08
IV.FIAM.HHN. ML:1.8 0.0001560223 0.1984 AML other m 2017-12-26T11:48:46.22
IV.ASSB.HHN. ML:1.9 0.00018753275 0.16 AML other m 2017-12-26T11:48:47.25
IV.ASSB.HHE. ML:1.8 0.00016392485000000002 0.1024 AML other m 2017-12-26T11:48:47.87
IV.SNTG.HHE. ML:1.5 0.00006162279 0.1024 AML other m 2017-12-26T11:48:49.27
IV.SNTG.HHN. ML:1.6 0.000081236405 0.1216 AML other m 2017-12-26T11:48:50.24
IV.VCEL.EHE. ML:1.8 0.00011319075 0.2816 AML other m 2017-12-26T11:48:52.59
IV.VCEL.EHN. ML:1.9 0.00012551875 0.2176 AML other m 2017-12-26T11:48:52.36
IV.TRTR.HHE. ML:2.0 0.00018950345 0.2816 AML other m 2017-12-26T11:49:01.00
IV.TRTR.HHN. ML:2.0 0.00021706820000000002 0.3584 AML other m 2017-12-26T11:48:57.82
IV.CING.HHN. ML:1.5 0.000050828195 0.1856 AML other m 2017-12-26T11:48:54.57
IV.CING.HHE. ML:1.4 0.000044959199999999995 0.0832 AML other m 2017-12-26T11:48:53.64
IV.T0110.HHN. ML:1.8 0.000095576685 0.3584 AML other m 2017-12-26T11:48:56.41
IV.T0110.HHE. ML:1.8 0.00009595727 0.4416 AML other m 2017-12-26T11:48:59.64
IV.INTR.HHN. ML:1.8 0.000060570659999999996 0.7808 AML other m 2017-12-26T11:49:07.50
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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