Earthquake with magnitude of ML 1.6 on date 26-09-2021 and time 21:12:44 (UTC) in region 4 km SW Belforte all'Isauro (PU)

A magnitude ML 1.6 earthquake occured in region: 4 km SW Belforte all'Isauro (PU), on

  • 26-09-2021 21:12:44 (UTC)
  • 26-09-2021 23:12:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.691, 12.347 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
Belforte all'Isauro PU 4 769 769
Sestino AR 4 1355 2124
Mercatello sul Metauro PU 5 1378 3502
Borgo Pace PU 5 606 4108
Sant'Angelo in Vado PU 6 4133 8241
Piandimeleto PU 7 2167 10408
Frontino PU 9 293 10701
Lunano PU 9 1527 12228
Carpegna PU 10 1674 13902
Peglio PU 12 696 14598
Pietrarubbia PU 13 660 15258
Badia Tedalda AR 13 1087 16345
Urbania PU 15 7099 23444
Macerata Feltria PU 15 1990 25434
Sassocorvaro PU 16 3504 28938
Pennabilli RN 16 2869 31807
Apecchio PU 16 1882 33689
Montecopiolo PU 17 1128 34817
Piobbico PU 17 2029 36846
Monte Cerignone PU 18 669 37515
Casteldelci RN 19 407 37922

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NE of Arezzo (99543 inhabitants)
45 Km SW of Rimini (147750 inhabitants)
50 Km S of Cesena (96758 inhabitants)
52 Km W of Pesaro (94582 inhabitants)
57 Km W of Fano (60888 inhabitants)
64 Km SE of Forlì (117913 inhabitants)
65 Km N of Perugia (166134 inhabitants)
76 Km SE of Faenza (58541 inhabitants)
82 Km S of Ravenna (159116 inhabitants)
87 Km NW of Foligno (57155 inhabitants)
88 Km E of Firenze (382808 inhabitants)
89 Km SE of Imola (69797 inhabitants)
92 Km E of Siena (53903 inhabitants)
94 Km E of Scandicci (50609 inhabitants)
95 Km W of Ancona (100861 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 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 1.6 2021-09-26
21:12:44
43.6907 12.3467 10 2021-09-26
21:18:17
Sala Sismica INGV-Roma 95918741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-26 21:12:44 ± 0.07
Latitude 43.6907 ± 0.0036
Longitude 12.3467 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95918741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 447
Semi-minor axis of confidence ellipse (meter) 343
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 44
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46045
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 95918741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-26 21:18:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SRES.HHZ. 2021-09-26T21:13:30.95 3.0 undecidable manual S 0.55 0
IV.PP3.EHZ. 2021-09-26T21:13:18.11 3.0 undecidable manual S -0.04 0
IV.BLLA.EHZ. 2021-09-26T21:13:02.19 0.6 undecidable manual S 11 0.4605 50 0.84 37
IV.CSP1.EHZ. 2021-09-26T21:13:01.74 3.0 positive manual P -0.09 0
IV.ASQU.HHZ. 2021-09-26T21:13:00.05 0.3 undecidable manual S 285 0.4164 50 0.01 72
IV.FRON.EHZ. 2021-09-26T21:12:57.63 0.3 undecidable manual S 122 0.3238 50 0.33 68
IV.CRE.HHZ. 2021-09-26T21:12:56.49 0.3 undecidable manual S 256 0.295 50 0.06 73
IV.ATCC.EHZ. 2021-09-26T21:12:56.11 3.0 negative manual P 0.05 0
IV.CAFI.HHZ. 2021-09-26T21:12:54.34 3.0 positive manual P -0.03 0
IV.MURB.HHZ. 2021-09-26T21:12:54.24 3.0 positive manual P 0.04 0
IV.ATPC.HNZ. 2021-09-26T21:12:54.58 0.3 undecidable manual S 159 0.2248 112 0.3 70
IV.ATPI.EHZ. 2021-09-26T21:12:54.98 0.3 undecidable manual S 170 0.2428 50 0.07 73
IV.ARVD.HHZ. 2021-09-26T21:12:54.68 3.0 positive manual P 0.19 0
IV.SSFR.HHZ. 2021-09-26T21:12:53.31 3.0 negative manual P -0.02 0
IV.SSP9.EHZ. 2021-09-26T21:12:53.63 0.6 undecidable manual S 233 0.1943 115 0.41 46
IV.BLLA.EHZ. 2021-09-26T21:12:53.58 0.6 positive manual P 11 0.4605 50 -0.85 37
IV.ASQU.HHZ. 2021-09-26T21:12:53.22 0.6 negative manual P 285 0.4164 50 -0.45 44
IV.PESA.HHZ. 2021-09-26T21:12:53.88 3.0 undecidable manual P 0.34 0
IV.CRTC.HHZ. 2021-09-26T21:12:52.87 3.0 positive manual P -0.04 0
IV.NARO.HHZ. 2021-09-26T21:12:52.72 0.3 undecidable manual S 115 0.1871 115 -0.23 72
IV.ATMI.HHZ. 2021-09-26T21:12:52.66 3.0 negative manual P 0 0
IV.APEC.HHZ. 2021-09-26T21:12:51.88 0.3 undecidable manual S 158 0.1421 122 0.44 69
IV.RSM2.HHZ. 2021-09-26T21:12:51.21 0.6 undecidable manual P 16 0.2572 50 0.27 47
IV.FRON.EHZ. 2021-09-26T21:12:51.82 0.6 undecidable manual P 122 0.3238 50 -0.28 46
IV.CRE.HHZ. 2021-09-26T21:12:51.30 0.6 negative manual P 256 0.295 50 -0.29 46
IV.MPAG.EHZ. 2021-09-26T21:12:51.34 3.0 positive manual Pg -0.03 0
IV.ATPI.EHZ. 2021-09-26T21:12:50.54 0.3 positive manual P 170 0.2428 50 -0.17 72
IV.PE3.EHZ. 2021-09-26T21:12:50.68 0.3 undecidable manual S 87 0.1079 129 0.31 72
IV.CPGN.EHZ. 2021-09-26T21:12:50.95 0.3 undecidable manual S 350 0.1115 128 0.47 69
IV.ATPC.HNZ. 2021-09-26T21:12:50.32 0.1 undecidable manual P 159 0.2248 112 -0.03 99
IV.PARC.HHZ. 2021-09-26T21:12:49.77 0.3 undecidable manual S 242 0.089 135 -0.04 76
IV.NARO.HHZ. 2021-09-26T21:12:49.07 0.6 negative manual P 115 0.1871 115 -0.51 45
IV.SSP9.EHZ. 2021-09-26T21:12:49.69 0.3 positive manual P 233 0.1943 115 -0.05 74
IV.CPGN.EHZ. 2021-09-26T21:12:48.07 0.1 positive manual P 350 0.1115 128 -0.09 100
IV.APEC.HHZ. 2021-09-26T21:12:48.78 0.1 positive manual P 158 0.1421 122 0.07 100
IV.SAIV.HNZ. 2021-09-26T21:12:48.65 0.3 undecidable manual S 118 0.0549 149 -0.34 72
IV.PARC.HHZ. 2021-09-26T21:12:47.69 0.3 undecidable manual P 242 0.089 135 -0.08 75
IV.SAIV.HNZ. 2021-09-26T21:12:47.08 0.3 undecidable manual P 118 0.0549 149 -0.22 74
IV.PE3.EHZ. 2021-09-26T21:12:47.96 0.1 negative manual P 87 0.1079 129 -0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHN. ML:1.6 0.0005495 0.2 AML other m 2021-09-26T21:12:49.91
IV.PARC.HHE. ML:1.5 0.00039 0.3 AML other m 2021-09-26T21:12:49.80
IV.CPGN.EHN. ML:1.7 0.0005575 1.82 AML other m 2021-09-26T21:12:50.99
IV.CPGN.EHE. ML:1.8 0.000698 0.46 AML other m 2021-09-26T21:12:51.31
IV.CPGN.HNN. ML:1.8 0.000673 0.46 AML other m 2021-09-26T21:12:51.08
IV.CPGN.HNE. ML:1.8 0.0007285 1.34 AML other m 2021-09-26T21:12:51.32
IV.PE3.EHE. ML:1.9 0.0010095 0.42 AML other m 2021-09-26T21:12:51.34
IV.PE3.EHN. ML:1.9 0.0009585 0.42 AML other m 2021-09-26T21:12:51.82
IV.APEC.HHE. ML:2 0.0008855 0.14 AML other m 2021-09-26T21:12:52.10
IV.APEC.HHN. ML:1.7 0.000535 0.12 AML other m 2021-09-26T21:12:53.23
IV.NARO.HHN. ML:1.8 0.0004125 0.06 AML other m 2021-09-26T21:12:53.61
IV.NARO.HHE. ML:1.4 0.0002 0.28 AML other m 2021-09-26T21:12:53.97
IV.SSP9.EHE. ML:1.2 0.0001085 0.7 AML other m 2021-09-26T21:12:54.51
IV.SSP9.EHN. ML:1.4 0.0001705 0.64 AML other m 2021-09-26T21:12:54.88
IV.CRE.HHN. ML:1.6 0.000191 0.18 AML other m 2021-09-26T21:12:56.75
IV.CRE.HHE. ML:1.5 0.000148 0.16 AML other m 2021-09-26T21:12:56.89
IV.ATPI.EHN. ML:1.3 0.0001108 0.78 AML other m 2021-09-26T21:12:57.33
IV.FRON.EHN. ML:1.6 0.0001705 0.62 AML other m 2021-09-26T21:12:59.06
IV.FRON.EHE. ML:1.3 7.645E-5 1.04 AML other m 2021-09-26T21:12:59.63
IV.ATMI.HHE. ML:1.5 0.0001175 0.82 AML other m 2021-09-26T21:13:00.13
IV.ATPI.EHE. ML:1.3 0.0001105 0.8 AML other m 2021-09-26T21:13:00.62
IV.SSFR.HHN. ML:2.1 0.00035 0.24 AML other m 2021-09-26T21:13:00.74
IV.ASQU.HHE. ML:1.4 6.41E-5 1.16 AML other m 2021-09-26T21:13:00.75
IV.SSFR.HNN. ML:2.2 0.0004475 0.16 AML other m 2021-09-26T21:13:00.74
IV.SSFR.HNE. ML:2.1 0.00041 1.32 AML other m 2021-09-26T21:13:01.98
IV.SSFR.HHE. ML:2.1 0.000344 0.58 AML other m 2021-09-26T21:13:01.62
IV.ATMI.HHN. ML:1.4 8.695E-5 0.52 AML other m 2021-09-26T21:13:01.69
IV.CAFI.HHN. ML:1.4 6.81E-5 0.64 AML other m 2021-09-26T21:13:02.51
IV.CAFI.HHE. ML:1.4 6.56E-5 0.54 AML other m 2021-09-26T21:13:03.56
IV.MURB.HHE. ML:1.7 0.0001235 1.22 AML other m 2021-09-26T21:13:05.72
IV.ASQU.HHN. ML:1.1 3.99E-5 0.42 AML other m 2021-09-26T21:13:06.31
IV.MURB.HHN. ML:1.7 0.000145 1.58 AML other m 2021-09-26T21:13:08.99
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