Earthquake with magnitude of Md 1.9 on date 24-07-2005 and time 20:23:33 (Italy) in region 4 km E Monteleone di Spoleto (PG)

A magnitude Md 1.9 earthquake occured in region: 4 km E Monteleone di Spoleto (PG), on

  • 24-07-2005 18:23:33 (UTC)
  • 24-07-2005 20:23:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.66, 13 at 9 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
Monteleone di Spoleto PG 4 599 599
Cascia PG 7 3217 3816
Poggiodomo PG 8 117 3933
Leonessa RI 11 2435 6368
Cittareale RI 14 482 6850
Scheggino PG 15 461 7311
Polino TR 15 233 7544
Sant'Anatolia di Narco PG 15 564 8108
Vallo di Nera PG 16 364 8472
Norcia PG 17 4957 13429
Ferentillo TR 17 1913 15342
Posta RI 17 694 16036
Cerreto di Spoleto PG 19 1075 17111
Rivodutri RI 20 1253 18364
Poggio Bustone RI 20 2055 20419
Borbona RI 20 617 21036

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Terni (111501 inhabitants)
41 Km SE of Foligno (57155 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
58 Km W of Teramo (54892 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
78 Km E of Viterbo (67173 inhabitants)
79 Km N of Tivoli (56533 inhabitants)
95 Km NE of Roma (2864731 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 1000 Md 1.9 2005-07-24
18:23:33
42.66 13 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 527429
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-07-24 18:23:33 ± 0.13
Latitude 42.66 ± 0.01
Longitude 13.00 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 527429

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1122
Semi-minor axis of confidence ellipse (meter) 851
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) 1303.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.58726
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitude information

Md:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 527429
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:12:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.BNI.HHN. 2005-07-24T18:23:56.04 10.0 undecidable manual Pg 0 0 0
IV.FAGN.EHZ. 2005-07-24T18:23:55.23 0.1 undecidable manual Sg 132 0.5873 -0.009 46
IV.MNS.SHZ. 2005-07-24T18:23:47.44 0.1 undecidable manual Sg 220 0.3606 -0.342 45
IV.FAGN.EHZ. 2005-07-24T18:23:45.28 3.0 undecidable manual Pg 132 0.5873 -0.519 0
IV.NRCA.SHZ. 2005-07-24T18:23:41.63 0.1 undecidable manual Sg 27 0.1925 -0.346 47
IV.MNS.SHZ. 2005-07-24T18:23:41.76 0.1 undecidable manual Pg 220 0.3606 0.147 94
IV.NRCA.SHZ. 2005-07-24T18:23:38.51 0.1 undecidable manual Pg 27 0.1925 0.156 97
IV.LNSS.BHN. 2005-07-24T18:23:37.72 0.1 undecidable manual Sg 151 0.0674 -0.201 49
IV.LNSS.BHN. 2005-07-24T18:23:36.22 0.1 undecidable manual Pg 151 0.0674 0.147 100
IV.BDI.SHZ. 2005-07-24T18:23:17.12 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.SHZ. Md:0 14 END duration s
IV.NRCA.SHZ. Md:1.7 17.9 END duration s
IV.MNS.SHZ. Md:2.1 26.5 END duration s
MN.BNI.HHN. Md:0 9 END duration s
MN.BNI.HHE. ML:0 0.000245 1.98 AML other m 2005-07-24T18:23:56.04
IV.LNSS.BHN. Md:2 27.2 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download