Earthquake with magnitude of ML 2.1 on date 23-08-2009 and time 13:02:59 (Italy) in region 5 km W Montefortino (FM)

A magnitude ML 2.1 earthquake occured in region: 5 km W Montefortino (FM), on

  • 23-08-2009 11:02:59 (UTC)
  • 23-08-2009 13:02:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9410, 13.2860 at 50 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
Montefortino FM 5 1178 1178
Montemonaco AP 6 604 1782
Amandola FM 7 3629 5411
Bolognola MC 8 142 5553
Sarnano MC 11 3264 8817
Comunanza AP 11 3166 11983
Montegallo AP 12 523 12506
Ussita MC 12 444 12950
Castelsantangelo sul Nera MC 12 281 13231
Acquacanina MC 13 121 13352
Palmiano AP 15 196 13548
Gualdo MC 15 815 14363
Smerillo FM 15 365 14728
Fiastra MC 15 559 15287
Montefalcone Appennino FM 15 424 15711
Monte San Martino MC 16 765 16476
Visso MC 16 1107 17583
Force AP 17 1354 18937
Penna San Giovanni MC 17 1108 20045
Roccafluvione AP 18 2010 22055
Venarotta AP 18 2066 24121
Arquata del Tronto AP 19 1178 25299
Cessapalombo MC 19 512 25811
San Ginesio MC 19 3498 29309
Fiordimonte MC 19 202 29511
Santa Vittoria in Matenano FM 19 1330 30841
Sant'Angelo in Pontano MC 20 1436 32277

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km NW of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
66 Km N of L'Aquila (69753 inhabitants)
67 Km NE of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
78 Km S of Ancona (100861 inhabitants)
85 Km NW of Montesilvano (53738 inhabitants)
93 Km NW of Pescara (121014 inhabitants)
98 Km NW of Chieti (51815 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.1
ML 2.1
2009-08-23
11:02:59
42.941 13.286 50 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 954079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-08-23 11:02:59 ± 0.17
Latitude 42.9410 ± 0.0072
Longitude 13.2860 ± 0.0160
Depth (km) 50 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 954079

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1282
Semi-minor axis of confidence ellipse (meter) 404
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 1526.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.94789
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 954079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:12:44

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 954079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:12:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RAVA.EHE. 2009-08-23T11:04:10.34 10.0 undecidable manual Sg 0 0 0
IV.FIU.EHN. 2009-08-23T11:03:39.41 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-08-23T11:03:27.26 0.3 undecidable manual Sg 268 0.8598 -0.343 62
IV.PIEI.HHE. 2009-08-23T11:03:26.93 0.3 undecidable manual Sg 318 0.8076 0.535 57
IV.FAGN.HHN. 2009-08-23T11:03:26.51 10.0 undecidable manual Sg 0 0 0
MN.PDG.HHE. 2009-08-23T11:03:26.20 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2009-08-23T11:03:23.13 0.3 undecidable manual Sg 300 0.6421 0.509 59
IV.CING.HHN. 2009-08-23T11:03:18.17 0.3 undecidable manual Sg 351 0.4389 -0.134 69
IV.CAMP.HHZ. 2009-08-23T11:03:17.67 0.3 undecidable manual Sg 167 0.4155 -0.168 68
IV.TERO.HHZ. 2009-08-23T11:03:17.94 0.3 undecidable manual Sg 144 0.3948 0.492 65
IV.LNSS.HHZ. 2009-08-23T11:03:17.25 0.3 undecidable manual Sg 208 0.3831 0.013 71
IV.BADI.EHN. 2009-08-23T11:03:17.95 0.3 undecidable manual Pg 307 0.9479 1.038 44
IV.CESI.HHE. 2009-08-23T11:03:16.13 0.3 undecidable manual Sg 283 0.2860 0.549 64
IV.MGAB.HHE. 2009-08-23T11:03:15.31 0.3 undecidable manual Pg 268 0.8598 -0.411 60
IV.SMA1.EHZ. 2009-08-23T11:03:15.91 0.1 undecidable manual Sg 173 0.3130 -0.094 94
IV.FAGN.HHN. 2009-08-23T11:03:15.92 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHE. 2009-08-23T11:03:15.13 0.3 undecidable manual Pg 334 0.8373 -0.297 62
IV.PIEI.HHE. 2009-08-23T11:03:14.79 0.3 undecidable manual Pg 318 0.8076 -0.232 63
IV.FDMO.HHE. 2009-08-23T11:03:14.29 0.1 undecidable manual Sg 303 0.1736 0.181 96
IV.GUMA.HHE. 2009-08-23T11:03:14.50 0.3 undecidable manual Sg 16 0.1268 0.825 61
IV.NRCA.SHZ. 2009-08-23T11:03:13.62 0.3 undecidable manual Sg 229 0.1655 -0.404 68
IV.MNS.HHN. 2009-08-23T11:03:13.48 0.3 undecidable manual Pg 219 0.7114 -0.268 64
IV.MURB.HHN. 2009-08-23T11:03:13.04 0.3 undecidable manual Pg 300 0.6421 0.197 64
IV.VCEL.EHE. 2009-08-23T11:03:13.46 0.3 undecidable manual Pg 143 0.6817 0.103 66
IV.FIAM.HHN. 2009-08-23T11:03:13.89 0.3 undecidable manual Pg 191 0.6844 0.499 60
IV.RAVA.EHE. 2009-08-23T11:03:12.11 10.0 undecidable manual Pg 0 0 0
IV.CESX.HHN. 2009-08-23T11:03:12.78 0.3 undecidable manual Pg 238 0.6142 0.289 64
IV.ARVD.HHZ. 2009-08-23T11:03:11.95 0.3 undecidable manual Pg 336 0.6106 -0.489 62
IV.CAMP.HHZ. 2009-08-23T11:03:10.01 0.3 undecidable manual Pg 167 0.4155 -0.071 70
IV.LNSS.HHZ. 2009-08-23T11:03:09.82 0.1 undecidable manual Pg 208 0.3831 0.086 93
IV.CING.HHN. 2009-08-23T11:03:09.88 0.3 undecidable manual Pg 351 0.4389 -0.472 64
IV.TERO.HHZ. 2009-08-23T11:03:09.75 0.1 undecidable manual Pg 144 0.3948 -0.107 93
IV.SNTG.SHZ. 2009-08-23T11:03:08.99 0.3 undecidable manual Pg 321 0.4020 -0.952 54
IV.CESI.HHE. 2009-08-23T11:03:08.63 0.1 undecidable manual Pg 283 0.2860 -0.148 95
IV.SMA1.EHZ. 2009-08-23T11:03:08.98 0.1 undecidable manual Pg 173 0.3130 -0.042 96
IV.GUMA.HHE. 2009-08-23T11:03:07.71 0.1 undecidable manual Pg 16 0.1268 0.033 100
IV.NRCA.SHZ. 2009-08-23T11:03:07.78 0.1 undecidable manual Pg 229 0.1655 -0.098 98
IV.FDMO.HHE. 2009-08-23T11:03:07.68 0.1 undecidable manual Pg 303 0.1736 -0.248 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.SHZ. Md:2.5 47 END duration s
IV.CESI.HHN. ML:1.8 0.000155 0.28 AML other m 2009-08-23T11:03:08.63
IV.CESI.HHE. Md:2.1 28.1 END duration s
IV.SMA1.EHN. ML:2.4 0.00051 0.2 AML other m 2009-08-23T11:03:08.98
IV.SMA1.EHE. ML:2.4 0.00057 0.16 AML other m 2009-08-23T11:03:08.98
IV.SNTG.SHZ. Md:2.3 36.6 END duration s
IV.TERO.HHN. ML:2.2 0.00026000000000000003 0.74 AML other m 2009-08-23T11:03:09.75
IV.TERO.HHE. ML:2.2 0.00032 0.32 AML other m 2009-08-23T11:03:09.75
IV.LNSS.HHN. ML:2.4 0.00040500000000000003 0.16 AML other m 2009-08-23T11:03:09.82
IV.LNSS.HHE. ML:2.4 0.000435 0.14 AML other m 2009-08-23T11:03:09.82
IV.CING.HHN. Md:1.7 16.8 END duration s
IV.CING.HHE. ML:1.9 0.000145 0.25 AML other m 2009-08-23T11:03:09.88
IV.CAMP.HHN. ML:2.0 0.000185 0.36 AML other m 2009-08-23T11:03:10.01
IV.CESX.HHN. Md:2.1 25.5 END duration s
IV.CESX.HHE. ML:1.8 0.00010499999999999999 0.48 AML other m 2009-08-23T11:03:12.78
IV.MURB.HHN. Md:2.3 31.5 END duration s
IV.MURB.HHE. ML:2.3 0.00023 0.26 AML other m 2009-08-23T11:03:13.04
IV.PIEI.HHN. ML:1.8 0.00006500000000000001 3.16 AML other m 2009-08-23T11:03:14.79
IV.PIEI.HHE. ML:1.8 0.00006500000000000001 0.28 AML other m 2009-08-23T11:03:14.79
IV.FAGN.HHN. Md:0.0 42 END duration s
IV.FAGN.HHE. ML:0.0 0.000165 0.28 AML other m 2009-08-23T11:03:15.92
IV.FIU.EHN. Md:0.0 18 END duration s
IV.FIU.EHE. ML:0.0 0.0005600000000000001 2.64 AML other m 2009-08-23T11:03:39.41
IV.FDMO.HHE. Md:2.0 25.4 END duration s
IV.GUMA.HHE. Md:2.1 28.8 END duration s
IV.SMA1.EHZ. Md:2.4 39 END duration s
IV.TERO.HHZ. Md:1.8 19.1 END duration s
IV.LNSS.HHZ. Md:2.2 32.2 END duration s
IV.CAMP.HHZ. Md:1.9 19 END duration s
IV.ARVD.HHZ. Md:2.2 29.7 END duration s
IV.RAVA.EHE. Md:0.0 11 END duration s
IV.VCEL.EHE. Md:2.0 22.4 END duration s
IV.MNS.HHN. Md:2.1 24.9 END duration s
IV.FIAM.HHN. Md:2.3 32.6 END duration s
IV.FSSB.HHE. Md:2.2 28.7 END duration s
IV.MGAB.HHE. Md:2.1 22.6 END duration s
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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
Waveforms Seismic signals in miniseed + resp format Download