Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 21-02-2018 and time 21:40:45 (Italy) in region 1 km E Preci (PG)

A magnitude ML 2.2 earthquake occured in region: 1 km E Preci (PG), on

  • 21-02-2018 20:40:45 (UTC)
  • 21-02-2018 21:40:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8780, 13.0490 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Preci PG 1 724 724
Visso MC 7 1107 1831
Castelsantangelo sul Nera MC 9 281 2112
Sellano PG 10 1079 3191
Norcia PG 10 4957 8148
Ussita MC 11 444 8592
Cerreto di Spoleto PG 13 1075 9667
Monte Cavallo MC 14 145 9812
Cascia PG 18 3217 13029
Fiordimonte MC 18 202 13231
Pieve Torina MC 19 1458 14689
Vallo di Nera PG 19 364 15053
Bolognola MC 20 142 15195
Fiastra MC 20 559 15754
Acquacanina MC 20 121 15875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
99 Km W of Montesilvano (53738 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
Reviewed
Rev100 		ML 2.2 2018-02-21
20:40:45		 42.8777 13.0493 11 2018-02-21
20:48:51		 Sala Sismica INGV-Roma 54071121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-21 20:40:45 ± 0.03
Latitude 42.8777 ± 0.0009
Longitude 13.0493 ± 0.0025
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 54071121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 800
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 326
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 38
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68708
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 33
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 54071121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-21 20:48:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2018-02-21T20:41:03.56 3.0 negative manual P 0.46 0
IV.BADI.EHZ. 2018-02-21T20:41:02.45 3.0 undecidable manual P 0.25 0
IV.MGAB.HHZ. 2018-02-21T20:40:58.62 0.3 undecidable manual P 273 76.2681 90 0.22 63
IV.FRON.EHZ. 2018-02-21T20:40:58.15 0.3 undecidable manual P 340 75.6687 90 -0.16 65
IV.SMA1.EHZ. 2018-02-21T20:40:57.26 0.1 undecidable manual S 140 35.9418 90 -0.02 95
IV.ASSB.HHZ. 2018-02-21T20:40:57.50 0.1 undecidable manual S 300 36.6411 90 0.05 94
IV.ARVD.HHZ. 2018-02-21T20:40:57.60 0.3 undecidable manual P 353 69.375 90 0.27 65
IV.T1299.EHZ. 2018-02-21T20:40:56.90 0.1 undecidable manual S 145 33.0447 90 0.41 89
IV.SSFR.HHZ. 2018-02-21T20:40:56.48 0.3 undecidable manual P 341 65.5899 90 -0.27 64
IV.GUMA.HHZ. 2018-02-21T20:40:56.43 0.1 undecidable manual S 48 30.9468 90 0.49 90
IV.PF6.EHZ. 2018-02-21T20:40:55.87 0.1 undecidable manual S 22 31.1466 90 -0.13 92
IV.LNSS.HHZ. 2018-02-21T20:40:55.85 0.1 undecidable manual S 181 30.5472 90 0.04 95
IV.CSP1.EHZ. 2018-02-21T20:40:54.88 0.1 undecidable manual S 28 26.8509 90 0.03 96
IV.FOSV.EHZ. 2018-02-21T20:40:54.34 0.3 undecidable manual P 333 51.8037 90 -0.28 66
IV.T1247.HHZ. 2018-02-21T20:40:54.57 0.3 undecidable manual P 157 52.503 90 -0.15 68
IV.EL6.EHZ. 2018-02-21T20:40:54.41 0.1 undecidable manual P 5 50.3163 90 0.02 93
OB.GAVE.EHZ. 2018-02-21T20:40:54.00 0.1 undecidable manual S 212 24.1536 90 -0.12 98
IV.TERO.HHZ. 2018-02-21T20:40:54.62 0.1 undecidable manual P 122 53.3022 90 -0.23 88
IV.MNTP.HNE. 2018-02-21T20:40:54.15 0.3 undecidable manual P 50 44.622 90 0.64 62
IV.CAMP.HHZ. 2018-02-21T20:40:53.82 0.1 undecidable manual P 142 47.9187 90 -0.2 90
IV.SNTG.HHZ. 2018-02-21T20:40:53.12 0.1 undecidable manual P 348 42.7239 90 -0.11 92
IV.CESX.HHZ. 2018-02-21T20:40:53.90 0.1 undecidable manual P 232 48.1185 90 -0.15 92
IV.MMO1.EHZ. 2018-02-21T20:40:53.54 0.1 undecidable manual S 84 22.6551 90 -0.19 92
IV.RM33.EHZ. 2018-02-21T20:40:53.03 0.1 undecidable manual P 162 43.0236 90 -0.24 91
IV.ASSB.HHZ. 2018-02-21T20:40:52.24 0.1 positive manual P 300 36.6411 90 -0.04 96
IV.T1214.EHZ. 2018-02-21T20:40:52.44 0.1 undecidable manual S 135 18.4704 90 -0.16 95
IV.MF5.EHZ. 2018-02-21T20:40:52.53 0.1 positive manual P 70 35.5422 90 0.43 89
IV.CESI.HHZ. 2018-02-21T20:40:52.57 0.1 undecidable manual S 320 18.3705 90 -0.01 99
IV.ARRO.EHZ. 2018-02-21T20:40:52.35 0.3 undecidable manual P 215 40.4262 90 -0.51 65
IV.MDAR.HNE. 2018-02-21T20:40:52.35 0.1 undecidable manual P 12 35.742 90 0.2 93
IV.SMA1.EHZ. 2018-02-21T20:40:52.18 0.1 undecidable manual P 140 35.9418 90 0 96
IV.T1221.EHZ. 2018-02-21T20:40:52.04 0.1 undecidable manual S 263 16.5723 90 -0.06 99
IV.MOMA.HHZ. 2018-02-21T20:40:52.80 0.1 undecidable manual P 258 39.8268 90 0.02 94
IV.LNSS.HHZ. 2018-02-21T20:40:51.26 0.1 undecidable manual P 181 30.5472 90 -0.08 96
IV.GUMA.HHZ. 2018-02-21T20:40:51.68 0.1 positive manual P 48 30.9468 90 0.27 93
IV.T1299.EHZ. 2018-02-21T20:40:51.91 0.1 undecidable manual P 145 33.0447 90 0.18 93
IV.PF6.EHZ. 2018-02-21T20:40:51.37 0.1 undecidable manual P 22 31.1466 90 -0.07 94
IV.MMO1.EHZ. 2018-02-21T20:40:50.07 0.1 undecidable manual P 84 22.6551 90 -0.06 96
IV.SEF1.HNE. 2018-02-21T20:40:50.78 0.3 undecidable manual P 345 30.9468 90 -0.63 62
OB.GAVE.EHZ. 2018-02-21T20:40:50.46 0.1 positive manual P 212 24.1536 90 0.1 95
IV.FEMA.HNZ. 2018-02-21T20:40:50.35 0.1 undecidable manual S 0 9.3795 123 0.1 100
IV.CSP1.EHZ. 2018-02-21T20:40:50.76 0.1 undecidable manual P 28 26.8509 90 -0.02 96
IV.MC2.EHZ. 2018-02-21T20:40:50.95 0.1 undecidable manual S 72 11.9769 108 0.08 99
IV.NRCA.HNZ. 2018-02-21T20:40:49.61 0.1 undecidable manual S 133 7.1928 135 -0.2 96
IV.T1221.EHZ. 2018-02-21T20:40:49.38 0.1 positive manual P 263 16.5723 90 0.19 95
IV.T1214.EHZ. 2018-02-21T20:40:49.47 0.1 negative manual P 135 18.4704 90 -0.01 99
IV.CESI.HHZ. 2018-02-21T20:40:49.60 0.1 positive manual P 320 18.3705 90 0.13 97
IV.MC2.EHZ. 2018-02-21T20:40:48.69 0.1 undecidable manual P 72 11.9769 108 0.2 98
IV.FEMA.HNZ. 2018-02-21T20:40:48.36 0.1 negative manual P 0 9.3795 123 0.23 97
IV.NRCA.HNZ. 2018-02-21T20:40:47.98 0.1 negative manual P 133 7.1928 135 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.8 0.008414999999999999 0.12 AML other m 2018-02-21T20:40:49.79
IV.NRCA.HNN. ML:2.8 0.008 0.1 AML other m 2018-02-21T20:40:49.79
IV.NRCA.HHE. ML:2.7 0.007189999999999999 1.2 AML other m 2018-02-21T20:40:49.25
IV.NRCA.HNE. ML:2.7 0.006885 1.2 AML other m 2018-02-21T20:40:49.25
IV.FEMA.HNN. ML:2.7 0.006665 0.12 AML other m 2018-02-21T20:40:50.71
IV.FEMA.HNE. ML:2.6 0.0054 0.88 AML other m 2018-02-21T20:40:51.55
IV.T1221.EHE. ML:2.3 0.0015699999999999998 0.48 AML other m 2018-02-21T20:40:52.49
IV.T1221.HNE. ML:2.3 0.0016400000000000002 0.48 AML other m 2018-02-21T20:40:52.49
IV.T1221.HNN. ML:2.2 0.00125 0.2 AML other m 2018-02-21T20:40:52.24
IV.T1221.EHN. ML:2.2 0.001286 0.22 AML other m 2018-02-21T20:40:52.35
IV.CESI.HHN. ML:2.8 0.00447 1.7 AML other m 2018-02-21T20:40:52.06
IV.T1214.HNE. ML:2.5 0.0024249999999999996 1.64 AML other m 2018-02-21T20:40:52.15
IV.T1214.EHE. ML:2.5 0.002285 1.64 AML other m 2018-02-21T20:40:52.15
IV.T1214.HNN. ML:2.5 0.00246 0.46 AML other m 2018-02-21T20:40:53.01
IV.T1214.EHN. ML:2.5 0.0024100000000000002 0.44 AML other m 2018-02-21T20:40:53.02
IV.CESI.HHE. ML:2.5 0.002505 1.12 AML other m 2018-02-21T20:40:53.25
OB.GAVE.HNN. ML:2.2 0.0010500000000000002 0.2 AML other m 2018-02-21T20:40:54.51
OB.GAVE.EHN. ML:2.7 0.002845 0.18 AML other m 2018-02-21T20:40:54.42
OB.GAVE.HNE. ML:2.7 0.0032949999999999998 0.56 AML other m 2018-02-21T20:40:54.40
OB.GAVE.EHE. ML:2.8 0.00354 0.56 AML other m 2018-02-21T20:40:54.41
IV.CSP1.EHN. ML:1.6 0.00020600000000000002 1.18 AML other m 2018-02-21T20:40:55.71
IV.CSP1.EHE. ML:1.9 0.000426 0.56 AML other m 2018-02-21T20:40:55.10
IV.PF6.EHN. ML:1.8 0.000272 0.22 AML other m 2018-02-21T20:40:56.38
IV.LNSS.HHN. ML:2.1 0.0006035 0.7 AML other m 2018-02-21T20:40:56.42
IV.T1299.EHN. ML:2.0 0.00040800000000000005 0.78 AML other m 2018-02-21T20:40:57.35
IV.ASSB.HHE. ML:2.5 0.0011600000000000002 0.1 AML other m 2018-02-21T20:40:57.89
IV.ASSB.HHN. ML:2.3 0.0008045 0.66 AML other m 2018-02-21T20:40:58.51
IV.T1299.EHE. ML:1.9 0.000375 0.78 AML other m 2018-02-21T20:40:58.38
IV.LNSS.HHE. ML:2.1 0.0005769999999999999 0.78 AML other m 2018-02-21T20:40:58.82
IV.GUMA.HHE. ML:2.5 0.001395 0.8 AML other m 2018-02-21T20:40:58.48
IV.PF6.EHE. ML:2.0 0.0004255 0.52 AML other m 2018-02-21T20:40:58.43
IV.MF5.EHE. ML:2.5 0.00131 0.84 AML other m 2018-02-21T20:40:58.79
IV.MF5.EHN. ML:2.4 0.0010395 1.58 AML other m 2018-02-21T20:40:58.80
IV.GUMA.HHN. ML:2.5 0.001385 1.5 AML other m 2018-02-21T20:40:59.78
IV.RM33.EHN. ML:1.9 0.000238 0.44 AML other m 2018-02-21T20:40:59.19
IV.MOMA.HHE. ML:2.4 0.000925 0.16 AML other m 2018-02-21T20:40:59.83
IV.SMA1.EHE. ML:2.2 0.0006535 0.42 AML other m 2018-02-21T20:41:00.05
IV.ARRO.EHE. ML:2.0 0.0003085 0.42 AML other m 2018-02-21T20:41:00.16
IV.ARRO.EHN. ML:1.9 0.00026250000000000004 0.16 AML other m 2018-02-21T20:41:00.21
IV.MOMA.HHN. ML:2.3 0.0007664999999999999 0.44 AML other m 2018-02-21T20:41:00.64
IV.SNTG.HHN. ML:1.8 0.0001945 0.14 AML other m 2018-02-21T20:41:01.13
IV.RM33.EHE. ML:1.9 0.00022649999999999998 0.24 AML other m 2018-02-21T20:41:01.39
IV.CESX.HHE. ML:2.1 0.000314 0.42 AML other m 2018-02-21T20:41:01.08
IV.SNTG.HHE. ML:1.8 0.000223 0.44 AML other m 2018-02-21T20:41:01.51
IV.SMA1.EHN. ML:2.1 0.000489 0.42 AML other m 2018-02-21T20:41:01.54
IV.CESX.HHN. ML:2.2 0.00039600000000000003 1.48 AML other m 2018-02-21T20:41:01.10
IV.FOSV.EHE. ML:1.8 0.000154 0.76 AML other m 2018-02-21T20:41:03.59
IV.FOSV.EHN. ML:1.8 0.000153 1.34 AML other m 2018-02-21T20:41:04.87
IV.TERO.HHE. ML:2.0 0.00023199999999999997 0.28 AML other m 2018-02-21T20:41:04.16
IV.TERO.HHN. ML:2.1 0.00027400000000000005 0.5 AML other m 2018-02-21T20:41:04.58
IV.SSFR.HHE. ML:2.2 0.00028649999999999997 0.16 AML other m 2018-02-21T20:41:08.49
IV.SSFR.HHN. ML:2.1 0.0002365 0.82 AML other m 2018-02-21T20:41:12.02
IV.MGAB.HHN. ML:2.2 0.000243 1.32 AML other m 2018-02-21T20:41:13.74
IV.MGAB.HHE. ML:2.1 0.000194 0.38 AML other m 2018-02-21T20:41:15.04
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