INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.0 on date 26-02-2018 and time 14:47:38 (Italy) in region 3 km SW Sant'Angelo in Pontano (MC)

A magnitude ML 2.0 earthquake occured in region: 3 km SW Sant'Angelo in Pontano (MC), on

  • 26-02-2018 13:47:38 (UTC)
  • 26-02-2018 14:47:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.08, 13.37 at 23 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Sant'Angelo in Pontano MC 3 1436 1436
Gualdo MC 3 815 2251
Penna San Giovanni MC 5 1108 3359
San Ginesio MC 5 3498 6857
Ripe San Ginesio MC 7 852 7709
Sarnano MC 8 3264 10973
Monte San Martino MC 8 765 11738
Falerone FM 9 3337 15075
Colmurano MC 9 1263 16338
Cessapalombo MC 10 512 16850
Servigliano FM 10 2336 19186
Montappone FM 10 1682 20868
Loro Piceno MC 10 2401 23269
Camporotondo di Fiastrone MC 10 563 23832
Monte Vidon Corrado FM 10 731 24563
Smerillo FM 11 365 24928
Amandola FM 11 3629 28557
Massa Fermana FM 12 963 29520
Santa Vittoria in Matenano FM 12 1330 30850
Montefalcone Appennino FM 13 424 31274
Urbisaglia MC 13 2628 33902
Caldarola MC 13 1823 35725
Monteleone di Fermo FM 13 395 36120
Belmonte Piceno FM 14 646 36766
Comunanza AP 14 3166 39932
Belforte del Chienti MC 14 1886 41818
Montegiorgio FM 15 6851 48669
Mogliano MC 15 4696 53365
Monsampietro Morico FM 15 659 54024
Montelparo FM 15 778 54802
Bolognola MC 15 142 54944
Montefortino FM 16 1178 56122
Tolentino MC 16 20069 76191
Force AP 16 1354 77545
Acquacanina MC 17 121 77666
Petriolo MC 17 1998 79664
Montottone FM 18 979 80643
Serrapetrona MC 18 966 81609
Monte Rinaldo FM 18 379 81988
Fiastra MC 18 559 82547
Francavilla d'Ete FM 18 964 83511
Magliano di Tenna FM 19 1452 84963
Grottazzolina FM 19 3398 88361

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km NW of Teramo (54892 inhabitants)
56 Km E of Foligno (57155 inhabitants)
61 Km S of Ancona (100861 inhabitants)
80 Km E of Perugia (166134 inhabitants)
81 Km N of L'Aquila (69753 inhabitants)
83 Km NE of Terni (111501 inhabitants)
89 Km SE of Fano (60888 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 inhabitants)
99 Km SE of Pesaro (94582 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 100 ML 2.0 2018-02-26
13:47:38
43.08 13.37 23 2018-02-26
14:05:14
Sala Sismica INGV-Roma 54176601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-26 13:47:38 ± 0.09
Latitude 43.08 ± 0.00
Longitude 13.37 ± 0.01
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 54176601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 64
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.75813
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 54176601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-26 14:05:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AOI.HHE. 2018-02-26T13:47:56.15 0.3 undecidable manual S 20 0.4964 106 0.46 64
IV.T1214.EHZ. 2018-02-26T13:47:52.18 3.0 undecidable manual S 200 0.3435 114 0.76 0
IV.SNTG.HHZ. 2018-02-26T13:47:52.29 0.6 undecidable manual S 299 0.3579 113 0.47 44
IV.PIEI.HHZ. 2018-02-26T13:47:52.56 0.1 undecidable manual P 307 0.7581 100 -0.06 88
IV.CESI.HHZ. 2018-02-26T13:47:52.65 3.0 undecidable manual S 257 0.3498 114 1.07 0
IV.NRCA.HHZ. 2018-02-26T13:47:51.03 0.6 undecidable manual S 217 0.3121 117 0.47 44
IV.CING.HHZ. 2018-02-26T13:47:50.70 0.6 undecidable manual S 336 0.3202 116 -0.08 48
IV.MTRA.EHZ. 2018-02-26T13:47:50.90 0.6 undecidable manual S 177 0.3256 115 -0.04 49
IV.ASSB.HHZ. 2018-02-26T13:47:48.76 0.6 positive manual P 266 0.5216 105 0.1 46
IV.AOI.HHE. 2018-02-26T13:47:48.33 0.3 undecidable manual P 20 0.4964 106 0.09 70
IV.MC2.EHE. 2018-02-26T13:47:48.70 0.6 undecidable manual S 218 0.2167 128 0.53 44
OB.GAVE.EHZ. 2018-02-26T13:47:48.86 0.3 undecidable manual P 222 0.5234 105 0.18 68
IV.MMO1.EHZ. 2018-02-26T13:47:47.52 0.6 undecidable manual S 190 0.1853 133 0.04 49
IV.SMA1.EHZ. 2018-02-26T13:47:47.36 0.3 negative manual P 183 0.4524 108 -0.15 69
IV.MDAR.HNZ. 2018-02-26T13:47:47.85 0.3 undecidable manual S 304 0.1996 131 0.06 74
IV.TERO.HHZ. 2018-02-26T13:47:47.88 0.3 undecidable manual P 160 0.4901 106 -0.25 67
IV.T1299.EHZ. 2018-02-26T13:47:47.55 0.6 undecidable manual P 188 0.4524 108 0.03 47
IV.PF6.EHZ. 2018-02-26T13:47:46.34 0.6 undecidable manual S 293 0.1403 142 -0.23 48
IV.MF5.EHZ. 2018-02-26T13:47:46.26 0.6 undecidable manual S 146 0.1142 148 0.14 49
IV.NRCA.HHZ. 2018-02-26T13:47:45.25 0.1 undecidable manual P 217 0.3121 117 -0.03 97
IV.GUMA.HHZ. 2018-02-26T13:47:45.16 0.3 undecidable manual S 234 0.0333 170 -0.07 76
IV.T1214.EHZ. 2018-02-26T13:47:45.79 0.1 undecidable manual P 200 0.3435 114 0.01 97
IV.CING.HHZ. 2018-02-26T13:47:45.04 0.1 undecidable manual P 336 0.3202 116 -0.37 90
IV.SNTG.HHZ. 2018-02-26T13:47:45.93 0.1 undecidable manual P 299 0.3579 113 -0.07 95
IV.OFFI.HHE. 2018-02-26T13:47:45.34 0.3 undecidable manual P 123 0.2725 121 0.64 62
IV.MTRA.EHZ. 2018-02-26T13:47:45.09 0.1 undecidable manual P 177 0.3256 115 -0.41 90
IV.CESI.HHZ. 2018-02-26T13:47:45.98 0.1 undecidable manual P 257 0.3498 114 0.11 95
IV.FEMA.HNZ. 2018-02-26T13:47:44.68 0.1 undecidable manual P 243 0.2635 122 0.11 96
IV.SSM1.HNE. 2018-02-26T13:47:43.83 0.3 undecidable manual P 316 0.2041 130 0.1 73
IV.MMO1.EHZ. 2018-02-26T13:47:43.25 0.1 undecidable manual P 190 0.1853 133 -0.25 95
IV.MDAR.HNZ. 2018-02-26T13:47:43.83 0.3 undecidable manual P 304 0.1996 131 0.15 73
IV.MC2.EHE. 2018-02-26T13:47:43.93 0.1 undecidable manual P 218 0.2167 128 0.03 99
IV.MF5.EHZ. 2018-02-26T13:47:42.63 0.1 negative manual P 146 0.1142 148 -0.08 100
IV.GUMA.HHZ. 2018-02-26T13:47:42.01 0.1 positive manual P 234 0.0333 170 -0.19 99
IV.PF6.EHZ. 2018-02-26T13:47:42.63 0.1 undecidable manual P 293 0.1403 142 -0.34 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:2.3 0.001325 0.56 AML other m 2018-02-26T13:47:45.25
IV.GUMA.HHN. ML:2.5 0.00203 0.2 AML other m 2018-02-26T13:47:45.29
IV.PF6.EHN. ML:1.9 0.0004645 0.08 AML other m 2018-02-26T13:47:46.39
IV.MF5.EHE. ML:2.2 0.000862 0.34 AML other m 2018-02-26T13:47:46.66
IV.MF5.EHN. ML:2.2 0.001045 0.34 AML other m 2018-02-26T13:47:46.50
IV.PF6.EHE. ML:2.2 0.000946 0.06 AML other m 2018-02-26T13:47:46.47
IV.CING.HHN. ML:2 0.0003265 1.68 AML other m 2018-02-26T13:47:51.90
IV.NRCA.HNN. ML:2.5 0.0010125 0.16 AML other m 2018-02-26T13:47:51.15
IV.NRCA.HHN. ML:2.5 0.00106 0.14 AML other m 2018-02-26T13:47:51.15
IV.NRCA.HHE. ML:2.6 0.001475 0.14 AML other m 2018-02-26T13:47:51.17
IV.NRCA.HNE. ML:2.6 0.001405 0.14 AML other m 2018-02-26T13:47:51.18
IV.CING.HHE. ML:2 0.000299 0.42 AML other m 2018-02-26T13:47:51.91
IV.MTRA.EHE. ML:1.8 0.0002045 1.78 AML other m 2018-02-26T13:47:51.93
IV.MTRA.EHN. ML:1.9 0.0002835 0.2 AML other m 2018-02-26T13:47:51.88
IV.SNTG.HHE. ML:1.9 0.0002395 0.26 AML other m 2018-02-26T13:47:52.54
IV.SNTG.HHN. ML:2.1 0.000404 0.22 AML other m 2018-02-26T13:47:52.58
IV.CESI.HHN. ML:1.8 0.0001815 0.48 AML other m 2018-02-26T13:47:53.69
IV.CESI.HHE. ML:1.8 0.0001705 0.46 AML other m 2018-02-26T13:47:53.76
IV.ASSB.HHN. ML:1.9 0.000159 0.68 AML other m 2018-02-26T13:47:58.92
IV.ASSB.HHE. ML:1.9 0.0001495 1.52 AML other m 2018-02-26T13:47:58.88
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://cnt.rm.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
Waveforms Seismic signals in full SEED format Download