Earthquake with magnitude of ML 0.5 on date 29-09-2021 and time 05:10:59 (Italy) in region 4 km NW Apecchio (PU)

A magnitude ML 0.5 earthquake occured in region: 4 km NW Apecchio (PU), on

  • 29-09-2021 03:10:59 (UTC)
  • 29-09-2021 05:10:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.593, 12.404 at 11 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
Apecchio PU 4 1882 1882
Sant'Angelo in Vado PU 8 4133 6015
Mercatello sul Metauro PU 8 1378 7393
Piobbico PU 9 2029 9422
Borgo Pace PU 11 606 10028
Urbania PU 13 7099 17127
Peglio PU 14 696 17823
Belforte all'Isauro PU 14 769 18592
Piandimeleto PU 15 2167 20759
Sestino AR 16 1355 22114
Lunano PU 16 1527 23641
Pietralunga PG 17 2111 25752
San Giustino PG 19 11297 37049
Frontino PU 19 293 37342
CittĂ  di Castello PG 20 39913 77255

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Arezzo (99543 inhabitants)
54 Km S of Rimini (147750 inhabitants)
54 Km N of Perugia (166134 inhabitants)
54 Km SW of Pesaro (94582 inhabitants)
57 Km W of Fano (60888 inhabitants)
62 Km S of Cesena (96758 inhabitants)
75 Km NW of Foligno (57155 inhabitants)
76 Km SE of Forlì (117913 inhabitants)
88 Km SE of Faenza (58541 inhabitants)
90 Km W of Ancona (100861 inhabitants)
92 Km E of Siena (53903 inhabitants)
93 Km S of Ravenna (159116 inhabitants)
94 Km E of Firenze (382808 inhabitants)
Recent and historical seismicity
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
Reviewed
Rev100
ML 0.5 2021-09-29
03:10:59
43.5928 12.4038 11 2021-09-29
03:22:29
Sala Sismica INGV-Roma 96013671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-29 03:10:59 ± 0.07
Latitude 43.5928 ± 0.0036
Longitude 12.4038 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96013671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 402
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.24462
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 96013671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-29 03:22:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-09-29T03:11:09.00 0.1 undecidable manual S 108 0.2446 50 0.01 97
IV.PARC.HHZ. 2021-09-29T03:11:05.22 0.1 undecidable manual S 295 0.1322 126 -0.19 96
IV.ATPI.EHZ. 2021-09-29T03:11:05.72 0.1 undecidable manual S 180 0.1421 124 -0.02 99
IV.NARO.HHZ. 2021-09-29T03:11:05.20 0.1 undecidable manual S 82 0.1295 126 -0.13 97
IV.PIEI.HHZ. 2021-09-29T03:11:04.57 0.3 undecidable manual S 121 0.1106 131 -0.21 72
IV.FRON.EHZ. 2021-09-29T03:11:04.76 0.3 undecidable manual P 108 0.2446 50 -0.07 72
IV.APEC.HHZ. 2021-09-29T03:11:03.21 0.1 undecidable manual S 161 0.036 159 0.14 99
IV.PE3.EHZ. 2021-09-29T03:11:03.07 0.6 undecidable manual P 33 0.1232 128 0.46 45
IV.NARO.HHZ. 2021-09-29T03:11:02.73 0.1 undecidable manual P 82 0.1295 126 0.01 100
IV.PARC.HHZ. 2021-09-29T03:11:02.78 0.1 undecidable manual P 295 0.1322 126 0.01 100
IV.ATPI.EHZ. 2021-09-29T03:11:02.99 0.1 undecidable manual P 180 0.1421 124 0.04 99
IV.PIEI.HHZ. 2021-09-29T03:11:02.39 0.1 undecidable manual P 121 0.1106 131 -0.01 100
IV.APEC.HHZ. 2021-09-29T03:11:01.53 0.1 undecidable manual P 161 0.036 159 0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHE. ML:0.5 4.895E-5 1.06 AML other m 2021-09-29T03:11:03.32
IV.APEC.HHN. ML:0.4 4.065E-5 1.36 AML other m 2021-09-29T03:11:04.70
IV.PIEI.HHN. ML:0.5 3.51E-5 0.96 AML other m 2021-09-29T03:11:04.21
IV.PIEI.HHE. ML:0.8 6.69E-5 0.12 AML other m 2021-09-29T03:11:04.88
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download