Earthquake with magnitude of ML 0.3 on date 24-04-2011 and time 17:30:59 (Italy) in region 4 km N Posta (RI)

A magnitude ML 0.3 earthquake occured in region: 4 km N Posta (RI), on

  • 24-04-2011 15:30:59 (UTC)
  • 24-04-2011 17:30:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5580, 13.0920 at 8 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Posta RI 4 694 694
Borbona RI 6 617 1311
Cittareale RI 9 482 1793
Leonessa RI 10 2435 4228
Micigliano RI 12 127 4355
Montereale AQ 13 2581 6936
Cagnano Amiterno AQ 15 1369 8305
Monteleone di Spoleto PG 16 599 8904
Antrodoco RI 16 2588 11492
Borgo Velino RI 17 972 12464
Capitignano AQ 18 665 13129
Poggio Bustone RI 18 2055 15184
Amatrice RI 18 2657 17841
Cantalice RI 18 2755 20596
Castel Sant'Angelo RI 19 1308 21904
Cascia PG 19 3217 25121
Barete AQ 20 737 25858
Rivodutri RI 20 1253 27111
Accumoli RI 20 667 27778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
36 Km E of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
91 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 inhabitants)
100 Km N of Velletri (53303 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
Md 1.3
ML 0.3
2011-04-24
15:30:59
42.558 13.092 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1201469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-24 15:30:59 ± 0.03
Latitude 42.5580 ± 0.0018
Longitude 13.0920 ± 0.0012
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1201469

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 186
Semi-minor axis of confidence ellipse (meter) 105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 24
Circular confidence region, given by single value of horizontal uncertainty (meter) 223.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.02
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.14839
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1201469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:30:40

Md:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1201469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:30:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHE. 2011-04-24T15:31:13.02 10.0 undecidable manual Pg 0 0 0
IV.VCEL.EHE. 2011-04-24T15:31:11.89 10.0 undecidable manual Pg 0 0 0
IV.RM32.EHN. 2011-04-24T15:31:05.44 0.6 undecidable manual Sg 85 16.4724 0.022 49
IV.RM33.EHZ. 2011-04-24T15:31:03.88 0.3 undecidable manual Sg 118 11.3775 -0.006 74
IV.LNSS.HHN. 2011-04-24T15:31:02.62 0.3 undecidable manual Sg 320 6.4935 -0.008 75
IV.RM32.EHN. 2011-04-24T15:31:02.71 0.1 undecidable manual Pg 85 16.4724 -0.019 98
IV.LNSS.HHN. 2011-04-24T15:31:01.13 0.1 undecidable manual Pg 320 6.4935 0.01 100
IV.RM33.EHZ. 2011-04-24T15:31:01.85 0.1 undecidable manual Pg 118 11.3775 0.008 99
IV.MSC.EHZ. 2011-04-24T15:30:42.11 10.0 undecidable manual Pg 0 0 0
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