Earthquake with magnitude of ML 1.8 on date 22-02-2017 and time 00:49:20 (Italy) in region 2 km SW Accumoli (RI)

A magnitude ML 1.8 earthquake occured in region: 2 km SW Accumoli (RI), on

  • 21-02-2017 23:49:20 (UTC)
  • 22-02-2017 00:49:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.68, 13.23 at 12 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Accumoli RI 2 667 667
Amatrice RI 8 2657 3324
Cittareale RI 9 482 3806
Arquata del Tronto AP 12 1178 4984
Norcia PG 17 4957 9941
Montereale AQ 18 2581 12522
Acquasanta Terme AP 18 2916 15438
Cascia PG 18 3217 18655
Campotosto AQ 18 542 19197
Capitignano AQ 19 665 19862
Montegallo AP 20 523 20385

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
39 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
85 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.8 2017-02-21
23:49:20
42.68 13.23 12 2017-02-21
23:55:22
Sala Sismica INGV-Roma 41451651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-21 23:49:20 ± 0.03
Latitude 42.68 ± 0.00
Longitude 13.23 ± 0.00
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 41451651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 178
Semi-minor axis of confidence ellipse (meter) 53
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 180
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.4002
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 41451651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-21 23:55:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2017-02-21T23:49:34.10 3.0 undecidable manual P 0.38 0
IV.SRES.HHZ. 2017-02-21T23:49:34.44 3.0 negative manual P 0.25 0
IV.CING.HHZ. 2017-02-21T23:49:34.21 3.0 positive manual P -0.18 0
IV.EL6.EHZ. 2017-02-21T23:49:33.44 3.0 undecidable manual P -0.19 0
IV.SNTG.HHZ. 2017-02-21T23:49:32.64 3.0 undecidable manual P -0.16 0
IV.T0110.HHZ. 2017-02-21T23:49:32.48 3.0 undecidable manual P -0.32 0
IV.FAGN.HHZ. 2017-02-21T23:49:31.19 3.0 undecidable manual P 0.54 0
IV.VCEL.EHZ. 2017-02-21T23:49:31.53 3.0 negative manual P 0.02 0
IV.MOMA.HHZ. 2017-02-21T23:49:30.49 3.0 negative manual P -0.15 0
IV.CESX.HHZ. 2017-02-21T23:49:30.12 3.0 negative manual P -0.11 0
IV.OFFI.HHZ. 2017-02-21T23:49:29.95 3.0 positive manual P 0.51 0
IV.MMO1.EHZ. 2017-02-21T23:49:29.64 0.1 undecidable manual S 19 0.2284 93 0.01 97
IV.T1217.EHZ. 2017-02-21T23:49:29.33 0.1 undecidable manual S 278 0.2194 93 -0.04 97
IV.T1220.EHZ. 2017-02-21T23:49:29.33 3.0 undecidable manual P -0.35 0
IV.T1246.HHZ. 2017-02-21T23:49:29.08 0.1 undecidable manual S 117 0.2185 93 -0.26 94
IV.FIAM.HHZ. 2017-02-21T23:49:28.96 3.0 positive manual P -0.28 0
IV.T1219.EHZ. 2017-02-21T23:49:28.84 3.0 undecidable manual P -0.22 0
IV.CAMP.HHZ. 2017-02-21T23:49:28.50 0.1 undecidable manual S 138 0.1979 94 -0.23 95
IV.GUMA.HHZ. 2017-02-21T23:49:28.89 3.0 positive manual P 0.1 0
IV.FDMO.HHZ. 2017-02-21T23:49:28.17 3.0 undecidable manual P -0.19 0
IV.CESI.HHZ. 2017-02-21T23:49:28.84 0.3 undecidable manual P 324 0.4002 91 0.19 68
IV.RM33.EHZ. 2017-02-21T23:49:28.03 0.3 undecidable manual S 183 0.1736 96 0.02 74
IV.NRCA.HNZ. 2017-02-21T23:49:27.80 0.1 undecidable manual S 331 0.1727 96 -0.18 96
IV.GIGS.HHZ. 2017-02-21T23:49:27.55 3.0 negative manual P -0.37 0
IV.T1212.EHZ. 2017-02-21T23:49:27.13 0.1 undecidable manual S 297 0.1511 99 -0.22 95
IV.T1222.HNZ. 2017-02-21T23:49:27.11 0.1 undecidable manual P 207 0.3139 92 -0.08 95
IV.LNSS.HHZ. 2017-02-21T23:49:27.64 0.3 undecidable manual S 240 0.1592 98 0.06 74
IV.T1211.EHZ. 2017-02-21T23:49:27.13 0.1 undecidable manual P 242 0.3121 92 -0.03 96
IV.ARRO.EHZ. 2017-02-21T23:49:27.86 3.0 positive manual P -0.11 0
IV.TERO.HHZ. 2017-02-21T23:49:26.43 3.0 undecidable manual P -0.47 0
IV.T1215.EHE. 2017-02-21T23:49:26.66 0.1 undecidable manual P 294 0.2896 92 -0.11 95
IV.T1247.HHZ. 2017-02-21T23:49:26.20 0.6 undecidable manual P 168 0.2464 93 0.17 47
IV.T1216.EHZ. 2017-02-21T23:49:26.25 0.3 undecidable manual P 324 0.2581 92 0.01 73
IV.T1217.EHZ. 2017-02-21T23:49:25.60 0.1 undecidable manual P 278 0.2194 93 0.02 98
IV.SMA1.EHZ. 2017-02-21T23:49:25.83 0.1 undecidable manual S 123 0.0944 122 0.05 100
IV.MC2.EHZ. 2017-02-21T23:49:25.96 0.3 undecidable manual P 353 0.2302 93 0.2 70
IV.T1246.HHZ. 2017-02-21T23:49:25.49 0.1 undecidable manual P 117 0.2185 93 -0.07 98
IV.T1241.EHZ. 2017-02-21T23:49:25.69 0.1 positive manual P 41 0.2293 93 -0.05 98
IV.T1299.EHZ. 2017-02-21T23:49:25.04 0.1 undecidable manual S 140 0.063 139 -0.03 100
IV.T1214.EHZ. 2017-02-21T23:49:25.33 0.1 undecidable manual S 350 0.0782 131 -0.06 99
IV.CAMP.HHZ. 2017-02-21T23:49:25.17 0.1 undecidable manual P 138 0.1979 94 -0.04 98
IV.T1218.EHZ. 2017-02-21T23:49:25.38 0.1 undecidable manual S 261 0.0836 128 -0.13 97
IV.MMO1.EHZ. 2017-02-21T23:49:25.70 0.1 undecidable manual P 19 0.2284 93 -0.03 98
IV.LNSS.HHZ. 2017-02-21T23:49:24.66 0.1 positive manual P 240 0.1592 98 0.11 97
IV.RM33.EHZ. 2017-02-21T23:49:24.88 0.1 undecidable manual P 183 0.1736 96 0.09 97
IV.NRCA.HNZ. 2017-02-21T23:49:24.83 0.1 positive manual P 331 0.1727 96 0.06 98
IV.T1212.EHZ. 2017-02-21T23:49:24.44 0.1 negative manual P 297 0.1511 99 0.03 99
IV.T1214.EHZ. 2017-02-21T23:49:23.41 0.1 undecidable manual P 350 0.0782 131 0.12 99
IV.T1218.EHZ. 2017-02-21T23:49:23.43 0.1 undecidable manual P 261 0.0836 128 0.08 100
IV.SMA1.EHZ. 2017-02-21T23:49:23.65 0.1 positive manual P 123 0.0944 122 0.14 98
IV.T1299.EHZ. 2017-02-21T23:49:23.30 0.1 negative manual P 140 0.063 139 0.2 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.5 0.0001075 0.18 AML other m 2017-02-21T23:49:35.23
IV.ARRO.EHN. ML:1.5 0.0001153 0.18 AML other m 2017-02-21T23:49:36.28
IV.CAMP.HHE. ML:1.2 0.0001137 0.28 AML other m 2017-02-21T23:49:28.68
IV.CAMP.HHN. ML:1.3 0.0001175 0.3 AML other m 2017-02-21T23:49:28.74
IV.CESI.HHE. ML:1.3 6.385E-5 1.1 AML other m 2017-02-21T23:49:36.40
IV.CESI.HHN. ML:1.6 0.00011965 0.3 AML other m 2017-02-21T23:49:37.30
IV.CESX.HHE. ML:1.2 3.83E-5 1.52 AML other m 2017-02-21T23:49:38.92
IV.CESX.HHN. ML:1.4 5.32E-5 0.3 AML other m 2017-02-21T23:49:38.91
IV.FAGN.HHN. ML:1.4 6.5E-5 0.42 AML other m 2017-02-21T23:49:40.59
IV.FAGN.HHE. ML:1.5 7.615E-5 0.24 AML other m 2017-02-21T23:49:41.55
IV.FDMO.HHE. ML:1.3 6.545E-5 0.2 AML other m 2017-02-21T23:49:36.64
IV.FDMO.HHN. ML:1.4 8.815E-5 0.64 AML other m 2017-02-21T23:49:34.67
IV.FIAM.HHN. ML:1.3 5.91E-5 0.74 AML other m 2017-02-21T23:49:35.92
IV.FIAM.HHE. ML:1.6 0.00010195 1.7 AML other m 2017-02-21T23:49:36.88
IV.GIGS.HHE. ML:1 3.595E-5 0.9 AML other m 2017-02-21T23:49:33.62
IV.GIGS.HHN. ML:0.9 3.045E-5 0.82 AML other m 2017-02-21T23:49:33.61
IV.GUMA.HNE. ML:2 0.000304 0.3 AML other m 2017-02-21T23:49:35.71
IV.GUMA.HHN. ML:1.8 0.0001865 1.22 AML other m 2017-02-21T23:49:35.16
IV.GUMA.HNN. ML:2.1 0.0003945 0.46 AML other m 2017-02-21T23:49:35.66
IV.GUMA.HHE. ML:2.1 0.0003985 0.32 AML other m 2017-02-21T23:49:35.70
IV.LNSS.HHE. ML:2.2 0.001215 1.68 AML other m 2017-02-21T23:49:27.92
IV.LNSS.HHN. ML:2.2 0.001215 1.6 AML other m 2017-02-21T23:49:28.05
IV.MOMA.HHE. ML:1.7 0.00010545 0.88 AML other m 2017-02-21T23:49:40.65
IV.MOMA.HNE. ML:1.9 0.000173 0.52 AML other m 2017-02-21T23:49:38.02
IV.MOMA.HHN. ML:1.6 9.535E-5 0.46 AML other m 2017-02-21T23:49:39.28
IV.MOMA.HNN. ML:2.3 0.000499652 1.4 AML other m 2017-02-21T23:49:45.73
IV.NRCA.HNE. ML:2.5 0.00231 1.9 AML other m 2017-02-21T23:49:27.00
IV.NRCA.HHE. ML:2.5 0.002425 1.88 AML other m 2017-02-21T23:49:27.00
IV.NRCA.HHN. ML:2.2 0.001115 1.56 AML other m 2017-02-21T23:49:28.85
IV.NRCA.HNN. ML:2.2 0.00113 1.54 AML other m 2017-02-21T23:49:28.08
IV.OFFI.HHE. ML:1.9 0.0002175 0.58 AML other m 2017-02-21T23:49:40.65
IV.OFFI.HHN. ML:1.8 0.000197 0.44 AML other m 2017-02-21T23:49:38.31
IV.RM33.HNN. ML:1.8 0.0004745 0.92 AML other m 2017-02-21T23:49:28.20
IV.RM33.EHN. ML:1.8 0.0004255 0.26 AML other m 2017-02-21T23:49:28.79
IV.RM33.HNE. ML:1.8 0.0004145 0.42 AML other m 2017-02-21T23:49:29.59
IV.RM33.EHE. ML:1.8 0.0004485 0.26 AML other m 2017-02-21T23:49:29.59
IV.SMA1.EHN. ML:2 0.00124 0.42 AML other m 2017-02-21T23:49:26.21
IV.SMA1.EHE. ML:2.1 0.001465 0.38 AML other m 2017-02-21T23:49:26.47
IV.T0110.HHE. ML:1.5 5.97E-5 0.26 AML other m 2017-02-21T23:49:45.77
IV.T0110.HHN. ML:1.4 3.93E-5 1.3 AML other m 2017-02-21T23:49:50.76
IV.T1211.EHE. ML:1.7 0.000186 0.48 AML other m 2017-02-21T23:49:32.62
IV.T1211.EHN. ML:1.9 0.000302 0.54 AML other m 2017-02-21T23:49:34.09
IV.T1212.EHE. ML:1.8 0.0005535 0.72 AML other m 2017-02-21T23:49:27.16
IV.T1212.HNE. ML:1.9 0.00066 0.7 AML other m 2017-02-21T23:49:27.16
IV.T1212.HNN. ML:1.9 0.0006195 0.4 AML other m 2017-02-21T23:49:27.36
IV.T1212.EHN. ML:1.8 0.000575 0.4 AML other m 2017-02-21T23:49:27.36
IV.T1214.EHE. ML:2 0.00125 0.64 AML other m 2017-02-21T23:49:25.56
IV.T1214.HNE. ML:2 0.001375 0.64 AML other m 2017-02-21T23:49:25.56
IV.T1214.EHN. ML:2 0.001135 0.26 AML other m 2017-02-21T23:49:25.36
IV.T1214.HNN. ML:2 0.001155 0.26 AML other m 2017-02-21T23:49:25.36
IV.T1216.EHN. ML:1.6 0.000203 0.42 AML other m 2017-02-21T23:49:32.72
IV.T1216.EHE. ML:1.6 0.000195 1.2 AML other m 2017-02-21T23:49:34.80
IV.T1217.EHN. ML:1.9 0.000418 0.24 AML other m 2017-02-21T23:49:29.53
IV.T1217.EHE. ML:1.7 0.000285 0.5 AML other m 2017-02-21T23:49:29.60
IV.T1218.EHN. ML:2.3 0.00239 0.38 AML other m 2017-02-21T23:49:25.63
IV.T1218.HNN. ML:2.3 0.00233 0.38 AML other m 2017-02-21T23:49:25.63
IV.T1218.EHE. ML:2.3 0.002235 0.88 AML other m 2017-02-21T23:49:25.82
IV.T1218.HNE. ML:2.3 0.00237 0.88 AML other m 2017-02-21T23:49:25.82
IV.T1220.EHN. ML:1.9 0.0001985 0.2 AML other m 2017-02-21T23:49:37.53
IV.T1220.EHE. ML:1.8 0.00018 0.72 AML other m 2017-02-21T23:49:38.56
IV.T1241.EHN. ML:1.5 0.000158 0.16 AML other m 2017-02-21T23:49:29.47
IV.T1241.EHE. ML:1.6 0.0002115 1.84 AML other m 2017-02-21T23:49:29.07
IV.T1247.HHN. ML:1.7 0.0002575 1.38 AML other m 2017-02-21T23:49:32.12
IV.T1247.HHE. ML:1.7 0.0002775 0.76 AML other m 2017-02-21T23:49:33.42
IV.T1299.HNN. ML:1.7 0.000678 0.3 AML other m 2017-02-21T23:49:25.33
IV.T1299.EHN. ML:1.7 0.000658 0.32 AML other m 2017-02-21T23:49:25.18
IV.T1299.EHE. ML:1.7 0.0007145 0.36 AML other m 2017-02-21T23:49:25.19
IV.T1299.HNE. ML:1.8 0.000759 0.36 AML other m 2017-02-21T23:49:25.19
IV.TERO.HHN. ML:1.8 0.0002965 0.42 AML other m 2017-02-21T23:49:31.61
IV.TERO.HHE. ML:1.8 0.0002895 0.32 AML other m 2017-02-21T23:49:31.67
IV.VCEL.EHE. ML:1.7 0.00010105 0.62 AML other m 2017-02-21T23:49:40.67
IV.VCEL.EHN. ML:1.5 7.215E-5 0.52 AML other m 2017-02-21T23:49:41.38
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download