Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.8 on date 25-03-2014 and time 03:44:25 (UTC) in region 6 km NW Pietralunga (PG)

A magnitude ML 2.8 earthquake occured in region: 6 km NW Pietralunga (PG), on

  • 25-03-2014 03:44:25 (UTC)
  • 25-03-2014 04:44:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4850, 12.3900 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.

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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
Pietralunga PG 6 2111 2111
Apecchio PU 9 1882 3993
Città di Castello PG 13 39913 43906
Montone PG 14 1680 45586
Piobbico PU 15 2029 47615
San Giustino PG 19 11297 58912
Mercatello sul Metauro PU 19 1378 60290
Monte Santa Maria Tiberina PG 19 1183 61473
Cantiano PU 19 2245 63718

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Arezzo (99543 inhabitants)
42 Km N of Perugia (166134 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
64 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km S of Rimini (147750 inhabitants)
74 Km S of Cesena (96758 inhabitants)
87 Km SE of Forlì (117913 inhabitants)
87 Km E of Siena (53903 inhabitants)
92 Km W of Ancona (100861 inhabitants)
97 Km E of Firenze (382808 inhabitants)
98 Km SE of Faenza (58541 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.8 2014-03-25
03:44:25		 43.4853 12.3898 8 2015-09-21
09:35:11		 Bollettino Sismico Italiano INGV 9736181
Reviewed
Rev100 		ML 2.8 2014-03-25
03:44:25		 43.4822 12.3932 5 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 5923271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-03-25 03:44:25 ± 0.04
Latitude 43.4853 ± 0.0027
Longitude 12.3898 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 9736181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 289
Semi-minor axis of confidence ellipse (meter) 126
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 6
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 26
Number of associated phases, regardless of their use for origin computation 75
Number of defining phases 74
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.14034
Number of stations at which the event was observed 48
Number of stations from which data was used for origin computation 47
Magnitudes information

ML:2.8

Field Value
Value 2.8
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 5923271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-03-25 03:51:46

ML:2.8

Field Value
Value 2.8
Uncertainty 0.3
Num. used stations 1
Type of magnitude ML
Reference to an origin 9736181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-03-02 00:18:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2014-03-25T03:44:49.60 1.0 undecidable manual S 131 75.1692 50 0.96 16
IV.FNVD.HHE. 2014-03-25T03:44:47.97 0.6 undecidable manual P 307 126.5733 50 1.23 26
IV.CING.HHE. 2014-03-25T03:44:47.10 0.1 undecidable manual S 100 65.9895 50 0.91 68
IV.CRMI.HHE. 2014-03-25T03:44:46.38 0.1 undecidable manual P 287 118.2927 50 0.91 62
IV.EL6.EHZ. 2014-03-25T03:44:45.30 0.6 undecidable manual S 107 59.8956 50 0.74 37
IV.SEI.HHE. 2014-03-25T03:44:44.24 0.6 undecidable manual P 308 103.9182 50 0.98 31
IV.FROS.HHE. 2014-03-25T03:44:43.62 0.1 undecidable manual P 253 104.118 50 0.34 78
IV.ASSB.HHZ. 2014-03-25T03:44:43.30 0.6 undecidable manual S 156 53.7018 50 0.4 42
IV.MCIV.HHE. 2014-03-25T03:44:42.31 0.1 undecidable manual P 217 97.4247 50 0.07 83
IV.SNTG.HHZ. 2014-03-25T03:44:42.60 0.3 undecidable manual S 120 51.2154 50 0.36 64
IV.OSSC.HHZ. 2014-03-25T03:44:41.90 0.3 undecidable manual P 273 92.1411 50 0.46 58
IV.CSNT.HHZ. 2014-03-25T03:44:41.13 0.3 undecidable manual P 269 88.5447 50 0.25 61
IV.NRCA.HHE. 2014-03-25T03:44:41.39 0.1 undecidable manual P 141 93.0402 50 -0.19 82
IV.GUMA.HHE. 2014-03-25T03:44:41.59 0.6 undecidable manual P 121 89.6436 50 0.55 38
IV.ARVD.HHZ. 2014-03-25T03:44:40.50 0.1 undecidable manual S 88 44.4222 50 0.08 92
IV.SACS.HHE. 2014-03-25T03:44:39.84 0.1 undecidable manual P 209 80.5638 50 0.19 84
IV.RUFI.EHZ. 2014-03-25T03:44:39.68 0.6 negative manual P 299 80.7636 50 0 44
IV.ATCC.EHZ. 2014-03-25T03:44:39.30 0.6 undecidable manual S 149 38.9277 50 0.34 44
IV.CSP1.EHZ. 2014-03-25T03:44:39.55 0.1 negative manual P 123 78.9654 50 0.14 85
IV.FSSB.HHZ. 2014-03-25T03:44:38.90 0.6 undecidable manual S 53 38.7279 50 0 47
IV.CRE.HHZ. 2014-03-25T03:44:38.30 0.1 undecidable manual S 293 38.2284 50 -0.47 86
IV.MOMA.HHZ. 2014-03-25T03:44:38.99 0.3 undecidable manual P 169 77.2671 50 -0.15 64
IV.FOSV.EHZ. 2014-03-25T03:44:38.20 0.6 undecidable manual S 125 36.6411 50 -0.14 46
IV.CAFI.HHZ. 2014-03-25T03:44:38.40 0.1 undecidable manual S 243 38.3283 50 -0.38 87
IV.FDMO.HHZ. 2014-03-25T03:44:38.71 0.1 undecidable manual P 131 75.1692 50 -0.11 86
IV.MGAB.HHE. 2014-03-25T03:44:37.62 0.1 undecidable manual P 200 67.377 50 0 90
IV.CING.HHE. 2014-03-25T03:44:37.08 0.1 undecidable manual P 100 65.9895 50 -0.33 84
IV.MPAG.EHZ. 2014-03-25T03:44:37.10 0.1 undecidable manual S 62 33.744 103 -0.34 89
IV.CESI.HHZ. 2014-03-25T03:44:37.57 0.1 undecidable manual P 142 67.5768 50 -0.08 88
IV.EL6.EHZ. 2014-03-25T03:44:36.26 0.1 undecidable manual P 107 59.8956 50 -0.21 87
IV.PESA.HHZ. 2014-03-25T03:44:36.93 0.1 positive manual P 35 62.0934 50 0.12 88
IV.SFI.EHZ. 2014-03-25T03:44:36.67 1.0 negative manual P 317 63.6918 50 -0.39 21
IV.ATTE.HHZ. 2014-03-25T03:44:36.30 0.3 undecidable manual S 185 32.0457 104 -0.57 63
IV.SSFR.HNZ. 2014-03-25T03:44:36.80 0.6 undecidable manual S 100 32.0457 104 -0.08 47
IV.GAG1.HNE. 2014-03-25T03:44:36.35 3.0 undecidable manual P -0.84 0
IV.ASQU.HHE. 2014-03-25T03:44:35.80 0.1 undecidable manual P 306 59.2962 50 -0.57 80
IV.FRON.EHE. 2014-03-25T03:44:35.20 0.3 undecidable manual S 82 27.2505 106 -0.07 71
IV.MURB.HHZ. 2014-03-25T03:44:35.50 0.3 undecidable manual S 156 26.9508 106 0.33 68
IV.RSM2.HHE. 2014-03-25T03:44:35.71 0.3 undecidable manual P 5 50.4162 50 0.71 57
IV.PE3.EHZ. 2014-03-25T03:44:35.30 0.6 undecidable manual S 20 24.8529 108 0.82 38
IV.ASSB.HHZ. 2014-03-25T03:44:35.10 0.1 undecidable manual P 156 53.7018 50 -0.41 84
IV.SNTG.HHZ. 2014-03-25T03:44:34.96 0.1 undecidable manual P 120 51.2154 50 -0.17 89
IV.ARVD.HHZ. 2014-03-25T03:44:33.76 0.1 positive manual P 88 44.4222 50 -0.32 88
IV.PARC.HHZ. 2014-03-25T03:44:33.60 0.3 undecidable manual S 326 21.7671 110 0.12 71
IV.NARO.HHE. 2014-03-25T03:44:33.20 0.3 undecidable manual S 48 20.6682 111 0.09 72
IV.ATCC.EHZ. 2014-03-25T03:44:33.05 0.1 negative manual P 149 38.9277 50 -0.19 91
IV.SSP9.EHZ. 2014-03-25T03:44:33.90 0.1 undecidable manual S 295 22.9548 109 0.04 96
IV.ATMI.HHZ. 2014-03-25T03:44:32.70 0.6 undecidable manual S 210 19.4694 112 -0.01 49
IV.FSSB.HHZ. 2014-03-25T03:44:32.81 0.1 positive manual P 53 38.7279 50 -0.39 87
IV.CRE.HHZ. 2014-03-25T03:44:32.52 0.3 positive manual P 293 38.2284 50 -0.61 61
IV.ATFO.HHZ. 2014-03-25T03:44:32.90 0.1 undecidable manual S 132 19.6692 112 0.11 95
IV.FOSV.EHZ. 2014-03-25T03:44:32.63 0.1 undecidable manual P 125 36.6411 50 -0.25 90
IV.CPGN.EHZ. 2014-03-25T03:44:32.84 0.1 positive manual P 351 35.4423 50 0.14 92
IV.CAFI.HHZ. 2014-03-25T03:44:32.73 0.1 negative manual P 243 38.3283 50 -0.41 87
IV.PIEI.HHE. 2014-03-25T03:44:31.10 0.3 undecidable manual S 64 12.9759 122 0.41 68
IV.MURB.HHZ. 2014-03-25T03:44:31.03 0.1 negative manual P 156 26.9508 106 -0.02 96
IV.SSFR.HNZ. 2014-03-25T03:44:31.65 0.1 undecidable manual P 100 32.0457 104 -0.38 88
IV.ATTE.HHZ. 2014-03-25T03:44:31.60 0.1 negative manual P 185 32.0457 104 -0.43 87
IV.CDCA.HNZ. 2014-03-25T03:44:31.20 0.1 undecidable manual S 257 12.9759 122 0.51 89
IV.MPAG.EHZ. 2014-03-25T03:44:31.96 0.1 positive manual P 62 33.744 103 -0.4 88
IV.ATVO.HHE. 2014-03-25T03:44:30.70 0.1 undecidable manual S 173 11.5773 125 0.42 91
IV.PE3.EHZ. 2014-03-25T03:44:30.65 0.6 positive manual P 20 24.8529 108 0 48
IV.FRON.EHE. 2014-03-25T03:44:30.83 0.1 undecidable manual P 82 27.2505 106 -0.28 91
IV.BADI.EHZ. 2014-03-25T03:44:30.30 0.3 undecidable manual S 283 11.9769 124 -0.12 72
IV.SSP9.EHZ. 2014-03-25T03:44:30.15 0.1 positive manual P 295 22.9548 109 -0.14 94
IV.PARC.HHZ. 2014-03-25T03:44:29.86 0.1 positive manual P 326 21.7671 110 -0.21 93
IV.ATMI.HHZ. 2014-03-25T03:44:29.74 0.1 undecidable manual P 210 19.4694 112 0.11 95
IV.ATFO.HHZ. 2014-03-25T03:44:29.75 0.1 undecidable manual P 132 19.6692 112 0.08 96
IV.NARO.HHE. 2014-03-25T03:44:29.66 0.1 positive manual P 48 20.6682 111 -0.2 94
IV.CDCA.HNZ. 2014-03-25T03:44:28.66 0.1 positive manual P 257 12.9759 122 0.2 95
IV.PIEI.HHE. 2014-03-25T03:44:28.60 0.1 positive manual P 64 12.9759 122 0.14 96
IV.ATPI.EHE. 2014-03-25T03:44:28.20 0.3 undecidable manual S 166 3.996 153 -0.31 71
IV.BADI.EHZ. 2014-03-25T03:44:28.30 0.1 positive manual P 283 11.9769 124 -0.01 99
IV.ATVO.HHE. 2014-03-25T03:44:28.46 0.1 undecidable manual P 173 11.5773 125 0.23 94
IV.ATPI.EHE. 2014-03-25T03:44:27.19 0.1 positive manual P 166 3.996 153 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BADI.EHE. ML:3.2 0.017799999999999996 0.56 AML other m 2014-03-25T03:44:30.69
IV.BADI.EHN. ML:3.2 0.0221 0.98 AML other m 2014-03-25T03:44:30.72
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, /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