Earthquake with magnitude of ML 2.1 on date 04-10-2020 and time 15:46:37 (Italy) in region 4 km SW Fermo (FM)

A magnitude ML 2.1 earthquake occured in region: 4 km SW Fermo (FM), on

  • 04-10-2020 13:46:37 (UTC)
  • 04-10-2020 15:46:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.14, 13.68 at 21 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
Fermo FM 4 37655 37655
Ponzano di Fermo FM 5 1674 39329
Monte Giberto FM 7 801 40130
Grottazzolina FM 7 3398 43528
Rapagnano FM 7 2145 45673
Monterubbiano FM 7 2230 47903
Magliano di Tenna FM 7 1452 49355
Torre San Patrizio FM 7 2048 51403
Monte Urano FM 7 8353 59756
Moresco FM 8 598 60354
Petritoli FM 8 2335 62689
Lapedona FM 9 1166 63855
Monte San Pietrangeli FM 10 2458 66313
Sant'Elpidio a Mare FM 10 17110 83423
Altidona FM 10 3390 86813
Monte Vidon Combatte FM 11 433 87246
Montegranaro FM 11 12990 100236
Porto San Giorgio FM 11 16121 116357
Montegiorgio FM 11 6851 123208
Montottone FM 11 979 124187
Montefiore dell'Aso AP 12 2123 126310
Carassai AP 12 1100 127410
Francavilla d'Ete FM 12 964 128374
Belmonte Piceno FM 12 646 129020
Monte San Giusto MC 13 8191 137211
Monsampietro Morico FM 13 659 137870
Campofilone FM 13 1916 139786
Ortezzano FM 13 774 140560
Massignano AP 14 1638 142198
Pedaso FM 14 2800 144998
Monte Rinaldo FM 15 379 145377
Porto Sant'Elpidio FM 15 26152 171529
Monte Vidon Corrado FM 16 731 172260
Monteleone di Fermo FM 16 395 172655
Massa Fermana FM 16 963 173618
Servigliano FM 16 2336 175954
Mogliano MC 17 4696 180650
Falerone FM 17 3337 183987
Montappone FM 17 1682 185669
Ripatransone AP 17 4309 189978
Cossignano AP 17 978 190956
Montelparo FM 18 778 191734
Montalto delle Marche AP 18 2122 193856
Corridonia MC 18 15430 209286
Civitanova Marche MC 19 41983 251269
Petriolo MC 19 1998 253267
Santa Vittoria in Matenano FM 20 1330 254597
Cupra Marittima AP 20 5398 259995
Montecosaro MC 20 7113 267108

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km N of Teramo (54892 inhabitants)
55 Km S of Ancona (100861 inhabitants)
80 Km NW of Montesilvano (53738 inhabitants)
82 Km E of Foligno (57155 inhabitants)
87 Km NW of Pescara (121014 inhabitants)
91 Km N of L'Aquila (69753 inhabitants)
94 Km SE of Fano (60888 inhabitants)
97 Km NW of Chieti (51815 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 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 in the 90 days preceding the time of the current earthquake occurrence, 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.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. 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
Reviewed
Rev100
ML 2.1 2020-10-04
13:46:37
43.14 13.68 21 2020-10-04
13:55:39
Sala Sismica INGV-Roma 83496491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-04 13:46:37 ± 0.14
Latitude 43.14 ± 0.00
Longitude 13.68 ± 0.01
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83496491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 739
Semi-minor axis of confidence ellipse (meter) 121
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 740
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 242
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.63582
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 83496491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-04 13:55:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ILOS.HHZ. 2020-10-04T13:48:26.63 3.0 undecidable manual Sn -4.37 0
IV.RESU.HHZ. 2020-10-04T13:47:55.35 3.0 negative manual Pg 11.18 0
X3.T1582.EHZ. 2020-10-04T13:47:42.23 3.0 positive manual Pn 1.43 0
IV.VTIR.HHZ. 2020-10-04T13:47:41.11 3.0 undecidable manual Sg 5.21 0
IV.PAOL.HHZ. 2020-10-04T13:47:40.33 3.0 undecidable manual Sg 6.96 0
GU.BLANC.HHZ. 2020-10-04T13:47:39.97 3.0 undecidable manual Pn -0.72 0
IV.SCHR.EHZ. 2020-10-04T13:47:34.93 3.0 undecidable manual Pg 11.3 0
GU.BHB.HHZ. 2020-10-04T13:47:34.38 3.0 undecidable manual Pn 3.75 0
IV.SBPO.HNZ. 2020-10-04T13:47:33.94 3.0 undecidable manual Sn -3.79 0
IV.VULT.HHZ. 2020-10-04T13:47:24.52 3.0 undecidable manual Pg 11.33 0
IV.ZCCA.HHZ. 2020-10-04T13:47:19.59 3.0 undecidable manual Sn -2.72 0
IV.MCEL.HHZ. 2020-10-04T13:47:17.85 3.0 undecidable manual Pn -2.51 0
IV.IMOL.HNZ. 2020-10-04T13:47:14.95 3.0 undecidable manual Sn -1.79 0
IV.PTRJ.HNZ. 2020-10-04T13:47:01.36 3.0 undecidable manual Pn 0.43 0
IV.VTIR.HHZ. 2020-10-04T13:47:00.16 3.0 positive manual Pn -5.69 0
IV.RIBO.EHZ.01 2020-10-04T13:46:57.41 3.0 undecidable manual S -3.24 0
IV.SMA1.EHZ. 2020-10-04T13:46:57.43 0.6 undecidable manual S 206 0.5684 101 0.44 44
IV.NRCA.HHZ. 2020-10-04T13:46:55.58 0.6 undecidable manual S 233 0.5126 102 0.19 46
IV.EL6.EHZ. 2020-10-04T13:46:54.19 0.6 undecidable manual S 294 0.4587 104 0.37 44
IV.MC2.EHZ. 2020-10-04T13:46:53.00 0.3 undecidable manual S 237 0.4236 105 0.19 71
IV.FDMO.HHZ. 2020-10-04T13:46:53.36 0.6 undecidable manual S 257 0.4425 105 0.01 48
IV.MTRA.EHZ. 2020-10-04T13:46:53.50 0.6 undecidable manual S 208 0.4353 105 0.35 46
IV.MMO1.EHZ. 2020-10-04T13:46:50.50 0.6 undecidable manual S 227 0.3516 109 -0.27 46
IV.CAMP.HHN. 2020-10-04T13:46:50.11 0.6 undecidable manual P 198 0.6358 99 0.23 45
IV.T1299.HNE. 2020-10-04T13:46:48.96 1.0 undecidable manual P 210 0.5828 100 -0.03 23
IV.GUMA.HHZ. 2020-10-04T13:46:48.33 0.6 undecidable manual S 253 0.2608 117 0.03 50
IV.SMA1.EHZ. 2020-10-04T13:46:48.66 0.6 undecidable manual P 206 0.5684 101 -0.08 46
IV.TERO.HHN. 2020-10-04T13:46:48.25 1.0 undecidable manual P 186 0.5207 102 0.3 23
IV.NRCA.HHZ. 2020-10-04T13:46:47.63 0.3 undecidable manual P 233 0.5126 102 -0.19 69
IV.MF5.EHZ. 2020-10-04T13:46:47.00 0.6 undecidable manual S 226 0.2203 122 -0.25 48
IV.EL6.EHZ. 2020-10-04T13:46:47.14 0.6 undecidable manual P 294 0.4587 104 0.23 45
IV.MTRA.EHZ. 2020-10-04T13:46:46.39 0.3 undecidable manual P 208 0.4353 105 -0.13 70
IV.CING.HNE. 2020-10-04T13:46:46.73 1.0 undecidable manual P 304 0.4209 105 0.44 22
IV.MC2.EHZ. 2020-10-04T13:46:46.11 0.3 undecidable manual P 237 0.4236 105 -0.22 70
IV.FDMO.HHZ. 2020-10-04T13:46:46.34 0.6 undecidable manual P 257 0.4425 105 -0.3 46
IV.MNTP.HNE. 2020-10-04T13:46:45.30 0.6 undecidable manual S 269 0.1511 135 -0.34 48
IV.MNTT.EHZ. 2020-10-04T13:46:44.87 0.6 undecidable manual S 217 0.098 148 0.2 50
IV.MMO1.EHZ. 2020-10-04T13:46:44.95 0.6 undecidable manual P 227 0.3516 109 -0.2 47
IV.CSP1.EHZ. 2020-10-04T13:46:44.88 0.3 negative manual P 262 0.3471 109 -0.2 71
IV.MF5.EHZ. 2020-10-04T13:46:43.20 0.1 negative manual P 226 0.2203 122 0.08 100
IV.GUMA.HHZ. 2020-10-04T13:46:43.73 0.1 negative manual P 253 0.2608 117 0.01 100
IV.SAP2.EHZ. 2020-10-04T13:46:42.95 0.3 positive manual P 258 0.2068 124 0.02 76
IV.MNTT.EHZ. 2020-10-04T13:46:41.70 0.6 undecidable manual P 217 0.098 148 0.07 51
IV.MNTP.HNE. 2020-10-04T13:46:41.98 0.6 undecidable manual P 269 0.1511 135 -0.21 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MNTT.EHE. ML:2.6 0.002975 1.58 AML other m 2020-10-04T13:46:45.82
IV.MNTT.EHN. ML:2.7 0.00349 1.76 AML other m 2020-10-04T13:46:46.89
IV.MF5.EHN. ML:1.8 0.000319 0.22 AML other m 2020-10-04T13:46:47.34
IV.SAP2.EHN. ML:2.5 0.001715 0.3 AML other m 2020-10-04T13:46:47.76
IV.MF5.EHE. ML:2 0.00043 1.5 AML other m 2020-10-04T13:46:48.85
IV.SAP2.EHE. ML:1.9 0.000395 0.24 AML other m 2020-10-04T13:46:48.60
IV.GUMA.HHE. ML:2.2 0.000659 0.38 AML other m 2020-10-04T13:46:49.32
IV.GUMA.HHN. ML:2 0.0004345 0.98 AML other m 2020-10-04T13:46:49.95
IV.FDMO.HHN. ML:1.7 0.00012 0.2 AML other m 2020-10-04T13:46:53.84
IV.MTRA.HNN. ML:2.4 0.0007055 0.26 AML other m 2020-10-04T13:46:53.97
IV.MTRA.EHN. ML:2.4 0.000678 0.26 AML other m 2020-10-04T13:46:53.98
IV.MTRA.EHE. ML:2.2 0.0004465 0.36 AML other m 2020-10-04T13:46:54.22
IV.MTRA.HNE. ML:2.3 0.000464 0.52 AML other m 2020-10-04T13:46:54.22
IV.FDMO.HHE. ML:1.8 0.000139 0.18 AML other m 2020-10-04T13:46:54.88
IV.CSP1.EHE. ML:1.8 0.0002005 0.42 AML other m 2020-10-04T13:46:56.37
IV.NRCA.HHN. ML:2.2 0.000337 0.1 AML other m 2020-10-04T13:46:56.64
IV.NRCA.HNN. ML:2.2 0.000324 0.92 AML other m 2020-10-04T13:46:57.65
IV.NRCA.HHE. ML:2.2 0.0003595 0.94 AML other m 2020-10-04T13:46:57.74
IV.NRCA.HNE. ML:2.3 0.000384 0.92 AML other m 2020-10-04T13:46:57.74
IV.SMA1.EHN. ML:2 0.0001835 1.4 AML other m 2020-10-04T13:46:58.09
IV.SMA1.EHE. ML:2 0.0001635 0.4 AML other m 2020-10-04T13:46:59.37
IV.CSP1.EHN. ML:1.7 0.000149 1.52 AML other m 2020-10-04T13:47:05.12
IV.PTRJ.HHE. ML:1.7 1.37E-5 0.66 AML other m 2020-10-04T13:47:49.82
IV.PTRJ.HHN. ML:2.4 7.035E-5 1.14 AML other m 2020-10-04T13:47:58.28
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
Waveforms Seismic signals in full SEED format Download