Earthquake with magnitude of ML 0.3 on date 24-05-2011 and time 20:45:25 (Italy) in region 4 km SW Cittareale (RI)

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

  • 24-05-2011 18:45:25 (UTC)
  • 24-05-2011 20:45:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5970, 13.1270 at 6 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
Cittareale RI 4 482 482
Posta RI 8 694 1176
Borbona RI 9 617 1793
Montereale AQ 13 2581 4374
Amatrice RI 14 2657 7031
Leonessa RI 14 2435 9466
Accumoli RI 15 667 10133
Monteleone di Spoleto PG 16 599 10732
Cascia PG 16 3217 13949
Capitignano AQ 17 665 14614
Micigliano RI 17 127 14741
Cagnano Amiterno AQ 17 1369 16110

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
39 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
53 Km SE of Foligno (57155 inhabitants)
74 Km NE of Guidonia Montecelio (88673 inhabitants)
75 Km NE of Tivoli (56533 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
90 Km W of Chieti (51815 inhabitants)
90 Km W of Pescara (121014 inhabitants)
94 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
Md 1.4
ML 0.3
2011-05-24
18:45:25
42.597 13.127 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1218509
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-24 18:45:25 ± 0.16
Latitude 42.5970 ± 0.0054
Longitude 13.1270 ± 0.0037
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1218509

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 603
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 16
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 187
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.12501
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1218509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:53:51

Md:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1218509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:53:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCIV.HHN. 2011-05-24T18:45:40.84 10.0 undecidable manual Sg 0 0 0
IV.VMG.SHZ. 2011-05-24T18:45:31.99 10.0 undecidable manual Sg 0 0 0
IV.RM33.EHZ. 2011-05-24T18:45:30.17 0.3 undecidable manual Sg 144 12.0768 -0.059 74
IV.RM32.EHN. 2011-05-24T18:45:30.86 0.3 undecidable manual Sg 102 13.875 0.069 73
IV.RM32.EHN. 2011-05-24T18:45:28.47 0.1 undecidable manual Pg 102 13.875 -0.082 97
IV.LNSS.HHZ. 2011-05-24T18:45:28.78 0.1 undecidable manual Sg 275 7.0929 0.001 100
IV.MCIV.HHN. 2011-05-24T18:45:28.68 10.0 undecidable manual Pg 0 0 0
IV.RM33.EHZ. 2011-05-24T18:45:28.31 0.1 undecidable manual Pg 144 12.0768 0.085 97
IV.LNSS.HHZ. 2011-05-24T18:45:27.40 0.1 undecidable manual Pg 275 7.0929 0.008 100
IV.VMG.SHZ. 2011-05-24T18:45:26.63 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