Earthquake with magnitude of ML 1.9 on date 17-08-2021 and time 06:34:01 (UTC) in region Costa Marchigiana Anconetana (Ancona)

A magnitude ML 1.9 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 17-08-2021 06:34:01 (UTC)
  • 17-08-2021 08:34:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.717, 13.251 at 11 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
Senigallia AN 3 45027 45027
Montemarciano AN 10 9992 55019
Trecastelli AN 13 7625 62644
Monte San Vito AN 13 6848 69492
Mondolfo PU 13 14277 83769
Morro d'Alba AN 13 1903 85672
Ostra AN 14 6875 92547
Chiaravalle AN 14 14796 107343
San Costanzo PU 15 4786 112129
Falconara Marittima AN 16 26565 138694
San Marcello AN 16 2057 140751
Belvedere Ostrense AN 17 2234 142985
Monte Porzio PU 17 2836 145821
Monsano AN 17 3405 149226
Camerata Picena AN 17 2567 151793
Corinaldo AN 18 4998 156791
Ostra Vetere AN 20 3311 160102

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SE of Fano (60888 inhabitants)
24 Km W of Ancona (100861 inhabitants)
35 Km SE of Pesaro (94582 inhabitants)
67 Km SE of Rimini (147750 inhabitants)
93 Km SE of Cesena (96758 inhabitants)
95 Km NE of Foligno (57155 inhabitants)
97 Km NE of Perugia (166134 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
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 1.9 2021-08-17
06:34:01
43.7172 13.2508 11 2021-12-29
11:12:21
Bollettino Sismico Italiano INGV 94368111
Reviewed
Rev100
ML 2.0 2021-08-17
06:34:02
43.6978 13.2297 11 2021-08-17
06:41:30
Sala Sismica INGV-Roma 94285251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-17 06:34:01 ± 0.13
Latitude 43.7172 ± 0.0081
Longitude 13.2508 ± 0.0087
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94368111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 936
Semi-minor axis of confidence ellipse (meter) 564
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 940
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 67
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.80669
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 94285251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-17 06:41:30

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 33
Type of magnitude ML
Reference to an origin 94368111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-07 16:56:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ECTS.HHZ. 2021-08-17T06:35:50.61 3.0 undecidable manual Pg 18.780001 0
GU.ROTM.HHZ. 2021-08-17T06:35:46.50 3.0 undecidable manual Sn 0.58 0
IV.PZUN.HHZ. 2021-08-17T06:35:40.85 3.0 undecidable manual Sn -2.78 0
CR.STON.BHZ. 2021-08-17T06:35:40.88 3.0 undecidable manual Sn 1.65 0
AC.VLO.HHZ. 2021-08-17T06:35:33.84 3.0 negative manual Pn 5.57 0
IV.IFOR.HHZ. 2021-08-17T06:35:31.01 3.0 undecidable manual Sg 2.19 0
ST.RONC.EHZ. 2021-08-17T06:35:23.01 3.0 undecidable manual Sn -5.58 0
IV.AGLI.HHZ. 2021-08-17T06:35:13.58 3.0 undecidable manual Pg 9.95 0
IV.EUCT.HNZ. 2021-08-17T06:35:05.34 3.0 undecidable manual Pg 9.89 0
IV.PAOL.HNZ. 2021-08-17T06:34:52.88 3.0 undecidable manual Pg 4.07 0
IV.ZEN8.EHZ. 2021-08-17T06:34:52.86 3.0 undecidable manual Pg 6.17 0
IV.VBKN.HHZ. 2021-08-17T06:34:46.41 3.0 undecidable manual Pn -4.52 0
IV.STAL.HNZ. 2021-08-17T06:34:46.24 3.0 positive manual Pg -0.31 0
IV.VENL.EHZ. 2021-08-17T06:34:32.72 3.0 negative manual Pn -3.2 0
IV.FIR.HHZ. 2021-08-17T06:34:28.90 3.0 undecidable manual P -0.59 0
IV.ASSB.HHZ. 2021-08-17T06:34:28.80 0.6 undecidable manual S 213 0.7995 50 0.74 37
IV.ATCC.EHZ. 2021-08-17T06:34:25.87 0.6 undecidable manual S 220 0.6925 50 1 34
IV.FDMO.HHZ. 2021-08-17T06:34:25.54 0.6 undecidable manual S 190 0.6907 50 0.71 39
IV.ATVO.HHZ. 2021-08-17T06:34:25.79 0.6 undecidable manual S 242 0.697 50 0.77 38
IV.ATPI.EHZ. 2021-08-17T06:34:24.79 0.6 undecidable manual S 247 0.6691 50 0.59 41
IV.MML1.EHZ. 2021-08-17T06:34:23.96 0.6 undecidable manual S 199 0.6367 50 0.74 39
IV.ATFO.HHZ. 2021-08-17T06:34:23.16 0.6 undecidable manual S 235 0.6043 50 0.9 36
IV.CSP1.EHZ. 2021-08-17T06:34:23.64 0.6 undecidable manual S 183 0.6259 50 0.73 40
IV.PE3.EHZ. 2021-08-17T06:34:21.46 0.6 undecidable manual S 268 0.545 50 0.93 37
IV.FOSV.EHZ. 2021-08-17T06:34:20.72 0.6 undecidable manual S 220 0.5513 50 0.02 48
IV.ATSC.EHE. 2021-08-17T06:34:19.39 0.6 undecidable manual S 235 0.5027 50 0.13 47
IV.NARO.HHZ. 2021-08-17T06:34:18.75 0.6 undecidable manual S 258 0.4964 50 -0.31 45
IV.FRON.EHZ. 2021-08-17T06:34:18.28 0.6 undecidable manual S 243 0.429 50 1.2 33
IV.ASSB.HHZ. 2021-08-17T06:34:16.56 0.3 undecidable manual P 213 0.7995 50 -0.43 62
IV.MF5.EHZ. 2021-08-17T06:34:16.73 0.3 undecidable manual P 168 0.7446 50 0.68 59
IV.MC2.EHZ. 2021-08-17T06:34:16.95 0.3 undecidable manual P 183 0.8067 50 -0.16 66
IV.EL6.EHZ. 2021-08-17T06:34:16.24 0.6 undecidable manual S 196 0.402 50 -0.05 48
IV.PESA.HHZ. 2021-08-17T06:34:15.87 0.6 undecidable manual S 307 0.3714 50 0.51 47
IV.ATVO.HHZ. 2021-08-17T06:34:15.07 0.3 undecidable manual P 242 0.697 50 -0.17 67
IV.ATCC.EHZ. 2021-08-17T06:34:15.16 0.3 undecidable manual P 220 0.6925 50 0 69
IV.CING.HHZ. 2021-08-17T06:34:14.61 0.6 undecidable manual S 187 0.3435 50 0.06 50
IV.FDMO.HHZ. 2021-08-17T06:34:14.86 0.3 undecidable manual P 190 0.6907 50 -0.27 66
IV.MMUR.HNZ. 2021-08-17T06:34:14.08 0.3 undecidable manual S 214 0.331 50 -0.08 74
IV.MPAG.EHZ. 2021-08-17T06:34:14.64 0.6 undecidable manual S 256 0.366 50 -0.56 43
IV.MML1.EHZ. 2021-08-17T06:34:14.05 0.3 undecidable manual P 199 0.6367 50 -0.15 68
IV.AOI.HHZ. 2021-08-17T06:34:14.13 0.6 undecidable manual S 123 0.304 50 0.76 45
IV.ATPI.EHZ. 2021-08-17T06:34:14.69 0.3 undecidable manual P 247 0.6691 50 -0.08 69
IV.PE3.EHZ. 2021-08-17T06:34:13.32 0.3 undecidable manual P 268 0.545 50 0.67 61
IV.ARVD.HHZ. 2021-08-17T06:34:13.04 0.6 undecidable manual S 226 0.313 50 -0.6 43
IV.ATFO.HHZ. 2021-08-17T06:34:13.35 0.3 undecidable manual P 235 0.6043 50 -0.3 67
IV.CSP1.EHZ. 2021-08-17T06:34:13.71 0.1 undecidable manual P 183 0.6259 50 -0.31 88
IV.PCRO.HNZ. 2021-08-17T06:34:12.01 0.6 undecidable manual S 118 0.2311 50 0.8 44
IV.FOSV.EHZ. 2021-08-17T06:34:12.08 0.3 undecidable manual P 220 0.5513 50 -0.67 61
IV.CRTC.HHZ. 2021-08-17T06:34:12.66 0.6 undecidable manual S 281 0.2707 50 0.28 49
IV.ATSC.EHE. 2021-08-17T06:34:11.17 0.3 undecidable manual P 235 0.5027 50 -0.75 59
IV.COR1.EHZ. 2021-08-17T06:34:11.00 0.6 undecidable manual S 245 0.1996 50 0.71 38
IV.NARO.HHZ. 2021-08-17T06:34:11.24 0.3 undecidable manual P 258 0.4964 50 -0.56 64
IV.FANO.HNZ. 2021-08-17T06:34:11.78 0.6 undecidable manual S 307 0.2095 50 1.19 34
IV.FRON.EHZ. 2021-08-17T06:34:10.05 0.3 undecidable manual P 243 0.429 50 -0.6 64
IV.EL6.EHZ. 2021-08-17T06:34:09.75 0.1 undecidable manual P 196 0.402 50 -0.45 90
IV.PESA.HHZ. 2021-08-17T06:34:09.64 0.3 undecidable manual P 307 0.3714 50 -0.02 72
IV.MPAG.EHZ. 2021-08-17T06:34:08.89 0.1 undecidable manual P 256 0.366 50 -0.68 83
IV.AOI.HHZ. 2021-08-17T06:34:08.63 0.1 undecidable manual P 123 0.304 50 0.12 100
IV.CING.HHZ. 2021-08-17T06:34:08.92 0.1 positive manual P 187 0.3435 50 -0.28 94
IV.MMUR.HNZ. 2021-08-17T06:34:08.55 0.3 undecidable manual P 214 0.331 50 -0.42 69
IV.FANO.HNZ. 2021-08-17T06:34:07.16 0.3 undecidable manual P 307 0.2095 50 0.25 72
IV.ARVD.HHZ. 2021-08-17T06:34:07.97 0.1 undecidable manual P 226 0.313 50 -0.7 84
IV.CRTC.HHZ. 2021-08-17T06:34:07.79 0.1 undecidable manual P 281 0.2707 50 -0.15 97
IV.PCRO.HNZ. 2021-08-17T06:34:07.51 0.1 undecidable manual P 118 0.2311 50 0.24 99
IV.COR1.EHZ. 2021-08-17T06:34:06.78 0.1 positive manual P 245 0.1996 50 0.04 98
IV.SENI.EHZ. 2021-08-17T06:34:05.96 0.6 undecidable manual S 227 0.0171 170 0.22 44
IV.SENI.EHZ. 2021-08-17T06:34:04.23 0.1 positive manual P 227 0.0171 170 0.12 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SENI.EHN. ML:1.6 0.00067145445 0.48 AML other m 2021-08-17T06:34:06.13
IV.SENI.EHE. ML:1.6 0.0007608833 0.4 AML other m 2021-08-17T06:34:06.25
IV.SENI.HNN. ML:2.4 0.0046640075 0.192 AML other m 2021-08-17T06:34:06.31
IV.COR1.EHN. ML:2.2 0.0010397175 0.3392 AML other m 2021-08-17T06:34:11.09
IV.COR1.EHE. ML:1.9 0.00052424725 0.2208 AML other m 2021-08-17T06:34:11.27
IV.COR1.HNN. ML:2.3 0.0012545475 0.1312 AML other m 2021-08-17T06:34:11.33
IV.PCRO.HNN. ML:2.4 0.001275687 0.3072 AML other m 2021-08-17T06:34:12.32
IV.PCRO.HNE. ML:2.6 0.002352755 0.0704 AML other m 2021-08-17T06:34:12.30
IV.CRTC.HHE. ML:2.4 0.00133 1.7 AML other m 2021-08-17T06:34:12.86
IV.CRTC.HHN. ML:2 0.0004555391 0.16 AML other m 2021-08-17T06:34:12.93
IV.ARVD.HHE. ML:1.2 6.071013E-5 0.24 AML other m 2021-08-17T06:34:13.14
IV.AOI.HHN. ML:2.3 0.00088516005 0.2208 AML other m 2021-08-17T06:34:14.45
IV.AOI.HHE. ML:1.6 0.0001758224 0.1792 AML other m 2021-08-17T06:34:14.28
IV.CING.HHN. ML:2.1 0.000497 0.16 AML other m 2021-08-17T06:34:14.87
IV.MPAG.EHN. ML:1.6 0.00013606895 0.5024 AML other m 2021-08-17T06:34:14.83
IV.MPAG.EHE. ML:1.4 7.5052685E-5 0.2016 AML other m 2021-08-17T06:34:14.89
IV.CING.HHE. ML:2.1 0.0004750238 0.1024 AML other m 2021-08-17T06:34:14.91
IV.EL6.EHE. ML:2.2 0.0004671391 0.16 AML other m 2021-08-17T06:34:16.65
IV.EL6.EHN. ML:2.2 0.0005345823 0.16 AML other m 2021-08-17T06:34:16.77
IV.NARO.HHN. ML:1.5 7.6063755E-5 0.3392 AML other m 2021-08-17T06:34:19.05
IV.FOSV.EHN. ML:1.4 5.414296E-5 0.24 AML other m 2021-08-17T06:34:21.16
IV.FOSV.EHE. ML:1.6 7.372461E-5 0.2816 AML other m 2021-08-17T06:34:21.02
IV.PE3.EHE. ML:1.9 0.0001766134 0.48 AML other m 2021-08-17T06:34:21.99
IV.CSP1.EHE. ML:2.2 0.00027771445 0.3808 AML other m 2021-08-17T06:34:23.97
IV.MML1.HNE. ML:2 0.00017541305 0.2912 AML other m 2021-08-17T06:34:24.30
IV.MML1.EHN. ML:2 0.000143 0.58 AML other m 2021-08-17T06:34:24.30
IV.MML1.EHE. ML:2 0.00017901075 0.2816 AML other m 2021-08-17T06:34:24.44
IV.MML1.HNN. ML:2 0.0001586868 0.5728 AML other m 2021-08-17T06:34:24.31
IV.FDMO.HHN. ML:1.7 7.9907675E-5 0.64 AML other m 2021-08-17T06:34:25.94
IV.FDMO.HHE. ML:1.8 8.779592E-5 0.4608 AML other m 2021-08-17T06:34:25.95
IV.ATCC.EHN. ML:1.8 8.933362E-5 0.4576 AML other m 2021-08-17T06:34:26.30
IV.ATCC.EHE. ML:1.6 5.684338E-5 0.4608 AML other m 2021-08-17T06:34:26.08
IV.ATVO.HHN. ML:1.5 4.6208115E-5 0.32 AML other m 2021-08-17T06:34:26.45
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