Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-04-2014 and time 01:42:15 (Italy) in region 2 km E Cittareale (RI)

A magnitude ML 1.6 earthquake occured in region: 2 km E Cittareale (RI), on

  • 25-04-2014 23:42:15 (UTC)
  • 26-04-2014 01:42:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6150, 13.1870 at 11 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
Cittareale RI 2 482 482
Amatrice RI 9 2657 3139
Accumoli RI 10 667 3806
Montereale AQ 11 2581 6387
Borbona RI 12 617 7004
Posta RI 13 694 7698
Capitignano AQ 14 665 8363
Campotosto AQ 16 542 8905
Cagnano Amiterno AQ 18 1369 10274
Cascia PG 18 3217 13491
Leonessa RI 19 2435 15926
Barete AQ 20 737 16663
Monteleone di Spoleto PG 20 599 17262
Arquata del Tronto AP 20 1178 18440

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
86 Km W of Chieti (51815 inhabitants)
86 Km W of Pescara (121014 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
99 Km NE of Roma (2864731 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 1.6 2014-04-25
23:42:15		 42.6147 13.1873 11 2015-09-21
09:36:10		 Bollettino Sismico Italiano INGV 16537081
Reviewed
Rev100 		ML 1.7 2014-04-25
23:42:16		 42.6117 13.1923 11 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 6298381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-04-25 23:42:15 ± 0.08
Latitude 42.6147 ± 0.0045
Longitude 13.1873 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 16537081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 498
Semi-minor axis of confidence ellipse (meter) 213
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 214
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.90112
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 1
Type of magnitude ML
Reference to an origin 16537081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-01-15 13:08:51

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 6298381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-04-25 23:50:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2014-04-25T23:42:46.00 0.6 undecidable manual S 349 100.0221 50 0.84 34
IV.MURB.HHZ. 2014-04-25T23:42:43.00 0.6 undecidable manual S 323 89.8434 50 0.55 39
IV.CING.HHZ. 2014-04-25T23:42:41.40 0.3 undecidable manual S 0 84.4488 50 0.4 61
IV.ATCC.EHZ. 2014-04-25T23:42:39.80 0.3 undecidable manual S 325 77.367 50 0.68 57
IV.ASSB.HHZ. 2014-04-25T23:42:35.30 0.3 undecidable manual S 318 64.0914 50 -0.27 66
IV.MOMA.HHE. 2014-04-25T23:42:33.76 0.3 undecidable manual S 292 54.501 50 0.73 58
IV.ARVD.HHZ. 2014-04-25T23:42:32.71 0.3 undecidable manual P 349 100.0221 50 -0.12 63
IV.MURB.HHZ. 2014-04-25T23:42:31.05 0.6 undecidable manual P 323 89.8434 50 -0.22 42
IV.CESI.HHE. 2014-04-25T23:42:31.09 0.3 undecidable manual S 332 49.0176 50 -0.46 65
IV.CING.HHZ. 2014-04-25T23:42:30.27 0.3 undecidable manual P 0 84.4488 50 -0.16 65
IV.FEMA.HNE. 2014-04-25T23:42:29.03 0.3 undecidable manual S 344 40.1265 50 -0.15 70
IV.ATCC.EHZ. 2014-04-25T23:42:29.14 0.3 undecidable manual P 325 77.367 50 -0.2 65
IV.EL6.EHZ. 2014-04-25T23:42:29.37 0.3 undecidable manual P 355 79.5648 50 -0.32 63
IV.FIAM.HHZ. 2014-04-25T23:42:28.90 0.3 undecidable manual S 189 38.8278 50 0.05 72
IV.TERO.HHZ. 2014-04-25T23:42:27.20 0.3 undecidable manual S 88 34.0437 50 -0.34 68
MN.AQU.HHE. 2014-04-25T23:42:27.17 0.6 undecidable manual S 148 33.9438 50 -0.36 45
IV.ARRO.EHE. 2014-04-25T23:42:27.40 0.3 undecidable manual S 264 34.6431 50 -0.32 68
IV.ASSB.HHZ. 2014-04-25T23:42:27.00 0.3 undecidable manual P 318 64.0914 50 -0.29 65
IV.OFFI.HHZ. 2014-04-25T23:42:26.26 0.3 undecidable manual P 49 53.9016 50 0.53 63
IV.MOMA.HHE. 2014-04-25T23:42:25.92 0.3 undecidable manual P 292 54.501 50 0.1 69
IV.FAGN.HHZ. 2014-04-25T23:42:25.33 0.1 undecidable manual P 140 50.5161 50 0.13 92
IV.CESI.HHE. 2014-04-25T23:42:24.54 0.3 undecidable manual P 332 49.0176 50 -0.44 65
IV.FIAM.HHZ. 2014-04-25T23:42:23.66 0.1 undecidable manual P 189 38.8278 50 0.25 92
IV.CAMP.HHZ. 2014-04-25T23:42:23.80 0.3 undecidable manual S 116 20.0688 50 -0.04 74
IV.FEMA.HNE. 2014-04-25T23:42:23.96 0.3 undecidable manual P 344 40.1265 50 0.36 67
IV.TERO.HHZ. 2014-04-25T23:42:22.48 0.1 undecidable manual P 88 34.0437 50 -0.18 94
MN.AQU.HHE. 2014-04-25T23:42:22.82 0.6 undecidable manual P 148 33.9438 50 0.17 47
IV.ARRO.EHE. 2014-04-25T23:42:22.72 0.3 undecidable manual P 264 34.6431 50 -0.04 72
IV.SMA1.EHZ. 2014-04-25T23:42:21.70 0.3 undecidable manual S 82 12.1767 132 0.03 76
IV.LNSS.HHZ. 2014-04-25T23:42:21.50 0.3 undecidable manual S 264 12.0768 132 -0.15 74
IV.NRCA.HNZ. 2014-04-25T23:42:20.69 0.1 undecidable manual P 346 25.0527 50 -0.58 86
IV.CAMP.HHZ. 2014-04-25T23:42:20.71 0.1 undecidable manual P 116 20.0688 50 0.19 96
IV.SMA1.EHZ. 2014-04-25T23:42:19.46 0.1 positive manual P 82 12.1767 132 0.19 97
IV.LNSS.HHZ. 2014-04-25T23:42:19.32 0.1 undecidable manual P 264 12.0768 132 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:2.0 0.00108 1.48 AML other m 2014-04-25T23:42:22.98
IV.SMA1.EHE. ML:2.1 0.001355 2.5 AML other m 2014-04-25T23:42:25.70
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