Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 04-07-2009 and time 21:07:07 (UTC) in region 5 km NW Montereale (AQ)

A magnitude ML 1.1 earthquake occured in region: 5 km NW Montereale (AQ), on

  • 04-07-2009 21:07:07 (UTC)
  • 04-07-2009 23:07:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5660, 13.2290 at 10 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
Montereale AQ 5 2581 2581
Capitignano AQ 8 665 3246
Cittareale RI 8 482 3728
Amatrice RI 9 2657 6385
Borbona RI 10 617 7002
Campotosto AQ 12 542 7544
Posta RI 12 694 8238
Cagnano Amiterno AQ 12 1369 9607
Barete AQ 13 737 10344
Accumoli RI 15 667 11011
Pizzoli AQ 15 4326 15337
Micigliano RI 19 127 15464

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
76 Km NE of Tivoli (56533 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
81 Km W of Chieti (51815 inhabitants)
82 Km W of Pescara (121014 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
97 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 2.0
ML 1.1 		2009-07-04
21:07:07		 42.566 13.229 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 916689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-04 21:07:07 ± 0.18
Latitude 42.5660 ± 0.0072
Longitude 13.2290 ± 0.0110
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 916689

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 802
Semi-minor axis of confidence ellipse (meter) 700
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 3
Circular confidence region, given by single value of horizontal uncertainty (meter) 1204.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63402
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 916689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:27:09

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 916689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:27:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHN. 2009-07-04T21:07:40.91 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-07-04T21:07:37.99 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHZ. 2009-07-04T21:07:24.71 0.6 undecidable manual Sg 276 53.2023 0.571 42
IV.FDMO.HHN. 2009-07-04T21:07:24.59 0.1 undecidable manual Sg 348 53.502 0.385 88
IV.MNS.HHN. 2009-07-04T21:07:22.20 10.0 undecidable manual Pg 0 0 0
IV.ASSB.HHN. 2009-07-04T21:07:19.98 0.3 undecidable manual Pg 319 70.374 0.313 65
IV.OFFI.HHZ. 2009-07-04T21:07:18.30 0.3 undecidable manual Pg 42 55.3002 0.947 53
IV.FIAM.HHZ. 2009-07-04T21:07:18.77 0.1 undecidable manual Sg 195 34.2435 -0.311 92
IV.NRCA.HHZ. 2009-07-04T21:07:17.70 0.1 undecidable manual Sg 343 31.1466 -0.544 88
IV.FDMO.HHN. 2009-07-04T21:07:17.02 0.1 undecidable manual Pg 348 53.502 -0.038 94
IV.TERO.HHZ. 2009-07-04T21:07:17.94 0.1 undecidable manual Sg 78 31.2465 -0.349 92
IV.CESX.HHZ. 2009-07-04T21:07:17.06 0.3 undecidable manual Pg 276 53.2023 0.041 71
IV.VCEL.EHZ. 2009-07-04T21:07:17.57 0.1 undecidable manual Pg 111 53.502 0.498 86
IV.FIAM.HHZ. 2009-07-04T21:07:14.21 0.1 undecidable manual Pg 195 34.2435 0.108 96
IV.NRCA.HHZ. 2009-07-04T21:07:13.25 0.1 undecidable manual Pg 343 31.1466 -0.369 92
IV.TERO.HHZ. 2009-07-04T21:07:13.42 0.1 positive manual Pg 78 31.2465 -0.22 95
IV.LNSS.HHN. 2009-07-04T21:07:13.79 0.1 undecidable manual Sg 285 15.9729 -0.082 100
IV.LNSS.HHN. 2009-07-04T21:07:11.00 0.1 positive manual Pg 285 15.9729 -0.093 100
IV.FG2.SHZ. 2009-07-04T21:07:09.93 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