INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.1 on date 25-02-2018 and time 09:27:29 (Italy) in region 2 km E Verucchio (RN)

A magnitude ML 2.1 earthquake occured in region: 2 km E Verucchio (RN), on

  • 25-02-2018 08:27:29 (UTC)
  • 25-02-2018 09:27:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.99, 12.44 at 10 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
Verucchio RN 2 10078 10078
Poggio Torriana RN 4 5135 15213
Santarcangelo di Romagna RN 8 22089 37302
Borghi FC 8 2843 40145
Roncofreddo FC 11 3386 43531
Sogliano al Rubicone FC 11 3195 46726
Montescudo - Monte Colombo RN 11 6779 53505
Savignano sul Rubicone FC 12 17766 71271
Sassofeltrio PU 12 1388 72659
Rimini RN 13 147750 220409
Longiano FC 13 7126 227535
San Leo RN 13 2972 230507
San Mauro Pascoli FC 13 11690 242197
Coriano RN 13 10502 252699
Gatteo FC 14 9068 261767
Mercatino Conca PU 14 1086 262853
Monte Grimano Terme PU 14 1136 263989
Gemmano RN 15 1158 265147
Montiano FC 15 1716 266863
Talamello RN 16 1104 267967
Novafeltria RN 16 7164 275131
San Clemente RN 16 5577 280708
Gambettola FC 17 10660 291368
Maiolo RN 17 848 292216
Monte Cerignone PU 17 669 292885
Riccione RN 17 34965 327850
Bellaria-Igea Marina RN 18 19519 347369
Montefiore Conca RN 18 2269 349638
Montecopiolo PU 18 1128 350766
Morciano di Romagna RN 19 7045 357811
Mercato Saraceno FC 20 6886 364697

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Rimini (147750 inhabitants)
23 Km SE of Cesena (96758 inhabitants)
39 Km W of Pesaro (94582 inhabitants)
41 Km SE of Forlì (117913 inhabitants)
49 Km W of Fano (60888 inhabitants)
51 Km SE of Ravenna (159116 inhabitants)
55 Km SE of Faenza (58541 inhabitants)
71 Km SE of Imola (69797 inhabitants)
74 Km NE of Arezzo (99543 inhabitants)
96 Km W of Ancona (100861 inhabitants)
98 Km E of Firenze (382808 inhabitants)
98 Km N of Perugia (166134 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 2.1 2018-02-25
08:27:29
43.99 12.44 10 2018-02-25
08:42:49
Sala Sismica INGV-Roma 54139631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-25 08:27:29 ± 0.18
Latitude 43.99 ± 0.01
Longitude 12.44 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 54139631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1107
Semi-minor axis of confidence ellipse (meter) 746
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.01264
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 54139631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-25 08:42:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VITU.HHZ. 2018-02-25T08:29:11.14 3.0 undecidable manual Sg 12.43 0
IV.MONC.HHZ. 2018-02-25T08:29:09.34 3.0 undecidable manual Sn 5.38 0
IV.PTRJ.HNZ. 2018-02-25T08:28:56.15 3.0 undecidable manual Sn 2.21 0
GU.RNCA.HHZ. 2018-02-25T08:28:15.50 3.0 undecidable manual Pn 4.59 0
IV.RNI2.HHZ. 2018-02-25T08:28:09.42 3.0 positive manual Pn -1.64 0
GU.SARM.EHZ. 2018-02-25T08:27:56.00 3.0 positive manual P -0.17 0
IV.SSFR.HHZ. 2018-02-25T08:27:50.95 0.6 undecidable manual S 156 0.607 50 0.55 41
IV.PF6.EHZ. 2018-02-25T08:27:49.16 0.1 undecidable manual P 147 1.0126 50 0.57 75
IV.BADI.EHZ. 2018-02-25T08:27:47.85 0.6 undecidable manual S 197 0.5027 50 0.56 42
IV.SSP9.EHZ. 2018-02-25T08:27:47.05 0.6 undecidable manual S 208 0.4739 50 0.61 42
IV.PIEI.HHZ. 2018-02-25T08:27:46.04 0.6 undecidable manual S 172 0.4605 50 -0.02 48
IV.SFI.EHZ. 2018-02-25T08:27:45.73 0.6 undecidable manual S 259 0.4362 50 0.39 45
IV.EL6.EHZ. 2018-02-25T08:27:45.01 0.1 undecidable manual P 144 0.8166 50 -0.22 86
IV.FOSV.EHZ. 2018-02-25T08:27:44.43 0.1 undecidable manual P 162 0.7338 50 0.61 79
IV.CAFI.HHZ. 2018-02-25T08:27:43.60 0.1 undecidable manual P 208 0.7464 50 -0.43 83
IV.PARC.HHZ. 2018-02-25T08:27:43.68 0.6 undecidable manual S 203 0.3732 50 0.23 47
IV.IMOL.EHZ. 2018-02-25T08:27:43.79 3.0 negative manual P 1 0
IV.RUFI.EHZ. 2018-02-25T08:27:42.91 0.1 undecidable manual P 257 0.688 50 -0.13 90
IV.PESA.HHZ. 2018-02-25T08:27:41.14 0.3 undecidable manual S 100 0.2914 50 0.11 73
IV.SSFR.HHZ. 2018-02-25T08:27:41.19 0.1 undecidable manual P 156 0.607 50 -0.46 85
IV.BRIS.HHZ. 2018-02-25T08:27:41.11 0.1 undecidable manual P 296 0.5369 50 0.66 81
IV.MURB.HHZ. 2018-02-25T08:27:41.06 3.0 undecidable manual P -2.57 0
IV.LMD.HHZ. 2018-02-25T08:27:40.55 0.1 undecidable manual P 279 0.5342 50 0.15 93
IV.BADI.EHZ. 2018-02-25T08:27:39.32 0.1 undecidable manual P 197 0.5027 50 -0.54 85
IV.SSP9.EHZ. 2018-02-25T08:27:39.20 0.1 undecidable manual P 208 0.4739 50 -0.17 93
IV.CRE.HHZ. 2018-02-25T08:27:39.88 0.1 undecidable manual P 224 0.5135 50 -0.17 93
IV.FRON.EHZ. 2018-02-25T08:27:39.32 3.0 positive manual P -0.39 0
IV.SFI.EHZ. 2018-02-25T08:27:38.31 0.1 undecidable manual P 259 0.4362 50 -0.42 89
IV.PIEI.HHZ. 2018-02-25T08:27:38.72 0.1 undecidable manual P 172 0.4605 50 -0.43 89
IV.PARC.HHZ. 2018-02-25T08:27:37.07 0.1 undecidable manual P 203 0.3732 50 -0.57 86
IV.PESA.HHZ. 2018-02-25T08:27:36.24 0.1 undecidable manual P 100 0.2914 50 0 100
IV.CPGN.EHZ. 2018-02-25T08:27:35.18 0.1 undecidable manual P 205 0.2095 113 0.41 93
IV.RSM2.HHZ. 2018-02-25T08:27:33.90 0.3 undecidable manual S 177 0.054 149 0.15 76
IV.RSM2.HHZ. 2018-02-25T08:27:31.85 0.6 undecidable manual P 177 0.054 149 -0.19 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CPGN.EHE. ML:2 0.0006625 0.58 AML other m 2018-02-25T08:27:41.13
IV.CPGN.HNN. ML:2.1 0.0007855 1.6 AML other m 2018-02-25T08:27:41.14
IV.PESA.HHN. ML:2.6 0.001635 0.24 AML other m 2018-02-25T08:27:41.88
IV.CPGN.EHN. ML:2.1 0.0007515 0.58 AML other m 2018-02-25T08:27:41.50
IV.CPGN.HNE. ML:2 0.0006725 0.78 AML other m 2018-02-25T08:27:42.52
IV.PESA.HHE. ML:2.4 0.0010285 1.22 AML other m 2018-02-25T08:27:43.16
IV.PARC.HHE. ML:1.9 0.0002485 1.58 AML other m 2018-02-25T08:27:44.94
IV.PARC.HHN. ML:1.9 0.0002415 1.46 AML other m 2018-02-25T08:27:45.18
IV.PIEI.HHE. ML:2 0.000276 0.62 AML other m 2018-02-25T08:27:46.67
IV.PIEI.HHN. ML:2 0.000243 1.46 AML other m 2018-02-25T08:27:47.00
IV.BADI.EHE. ML:2 0.000256 0.16 AML other m 2018-02-25T08:27:48.20
IV.BADI.EHN. ML:2.2 0.00032 0.16 AML other m 2018-02-25T08:27:48.42
IV.FRON.EHN. ML:1.8 0.0001565 0.92 AML other m 2018-02-25T08:27:51.00
IV.LMD.HHN. ML:1.9 0.0001615 1.22 AML other m 2018-02-25T08:27:51.09
IV.LMD.HHE. ML:2 0.000192 1.82 AML other m 2018-02-25T08:27:52.91
IV.SSFR.HHE. ML:2.3 0.0003665 0.22 AML other m 2018-02-25T08:27:52.70
IV.SSFR.HNN. ML:2.4 0.0004135 0.98 AML other m 2018-02-25T08:27:53.05
IV.SSFR.HNE. ML:2.4 0.0003955 0.42 AML other m 2018-02-25T08:27:53.71
IV.FRON.EHE. ML:1.7 0.00012165 1.08 AML other m 2018-02-25T08:27:53.74
IV.SSFR.HHN. ML:2.3 0.000367 0.2 AML other m 2018-02-25T08:27:55.98
IV.RNI2.HHE. ML:3.3 0.000285 0.9 AML other m 2018-02-25T08:28:59.38
IV.RNI2.HHN. ML:3.3 0.0002465 1.04 AML other m 2018-02-25T08:29:01.98
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