Earthquake with magnitude of ML 1.1 on date 28-09-2021 and time 01:09:53 (Italy) in region 1 km N Fiordimonte (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km N Fiordimonte (MC), on

  • 27-09-2021 23:09:53 (UTC)
  • 28-09-2021 01:09:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.046, 13.092 at 9 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
Fiordimonte MC 1 202 202
Pievebovigliana MC 2 866 1068
Pieve Torina MC 3 1458 2526
Fiastra MC 5 559 3085
Muccia MC 6 915 4000
Acquacanina MC 7 121 4121
Monte Cavallo MC 9 145 4266
Camerino MC 10 6974 11240
Serravalle di Chienti MC 12 1070 12310
Ussita MC 12 444 12754
Bolognola MC 12 142 12896
Visso MC 13 1107 14003
Caldarola MC 15 1823 15826
Cessapalombo MC 15 512 16338
Sefro MC 16 422 16760
Serrapetrona MC 17 966 17726
Sarnano MC 17 3264 20990
Pioraco MC 17 1134 22124
Camporotondo di Fiastrone MC 17 563 22687
Castelsantangelo sul Nera MC 18 281 22968
Belforte del Chienti MC 18 1886 24854
Castelraimondo MC 19 4587 29441
Preci PG 19 724 30165
San Ginesio MC 20 3498 33663

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
58 Km E of Perugia (166134 inhabitants)
65 Km NE of Terni (111501 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
89 Km S of Fano (60888 inhabitants)
97 Km S of Pesaro (94582 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 1.1 2021-09-27
23:09:53
43.0458 13.0915 9 2021-09-27
23:16:15
Sala Sismica INGV-Roma 95966071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 23:09:53 ± 0.07
Latitude 43.0458 ± 0.0027
Longitude 13.0915 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95966071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 383
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33815
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 95966071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 23:16:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CING.HHZ. 2021-09-27T23:10:06.66 0.6 undecidable manual S 13 0.3381 50 0.2 47
IV.EL6.EHZ. 2021-09-27T23:10:04.84 0.6 undecidable manual S 1 0.2833 50 0.01 49
IV.TERO.HHZ. 2021-09-27T23:10:04.83 3.0 undecidable manual P -0.44 0
IV.SNTG.HHZ. 2021-09-27T23:10:03.47 0.6 undecidable manual S 332 0.2365 109 0.24 47
IV.NRCA.HHZ. 2021-09-27T23:10:02.39 0.6 undecidable manual S 176 0.2131 111 0.01 50
IV.MNTT.EHZ. 2021-09-27T23:10:02.41 3.0 positive manual P 0.79 0
IV.GUMA.HHZ. 2021-09-27T23:10:01.59 0.6 undecidable manual S 85 0.179 115 0.42 46
IV.CESI.HHZ. 2021-09-27T23:10:00.22 0.6 undecidable manual S 253 0.143 120 0.28 48
IV.MC2.EHZ. 2021-09-27T23:10:00.04 0.6 undecidable manual S 152 0.152 119 -0.22 48
IV.CING.HHZ. 2021-09-27T23:10:00.79 0.1 undecidable manual P 13 0.3381 50 -0.22 93
IV.MDAR.HNZ. 2021-09-27T23:10:00.02 0.6 undecidable manual S 14 0.1511 119 -0.21 48
IV.ASSB.HHZ. 2021-09-27T23:10:00.57 3.0 negative manual P -0.13 0
IV.EL6.EHZ. 2021-09-27T23:09:59.88 1.0 negative manual P 1 0.2833 50 -0.19 24
IV.NRCA.HHZ. 2021-09-27T23:09:58.50 0.6 undecidable manual P 176 0.2131 111 -0.16 48
IV.SNTG.HHZ. 2021-09-27T23:09:58.98 0.1 undecidable manual P 332 0.2365 109 -0.17 96
IV.CSP1.EHZ. 2021-09-27T23:09:58.22 0.6 undecidable manual S 61 0.0944 131 -0.22 49
IV.MML1.EHZ. 2021-09-27T23:09:58.47 0.6 undecidable manual S 308 0.1106 127 -0.44 46
IV.GUMA.HHZ. 2021-09-27T23:09:58.20 0.6 negative manual P 85 0.179 115 0.24 48
IV.MDAR.HNZ. 2021-09-27T23:09:57.76 0.1 undecidable manual P 14 0.1511 119 0.34 94
IV.CESI.HHZ. 2021-09-27T23:09:57.42 0.1 positive manual P 253 0.143 120 0.17 98
IV.MC2.EHZ. 2021-09-27T23:09:57.39 0.1 undecidable manual P 152 0.152 119 -0.05 100
IV.MML1.EHZ. 2021-09-27T23:09:56.70 0.3 positive manual P 308 0.1106 127 0.05 76
IV.CSP1.EHZ. 2021-09-27T23:09:56.28 0.1 positive manual P 61 0.0944 131 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.3 0.0002785 1.46 AML other m 2021-09-27T23:09:58.22
IV.MML1.EHN. ML:1.3 0.00022 0.16 AML other m 2021-09-27T23:09:59.02
IV.MML1.EHE. ML:0.7 5.775E-5 0.38 AML other m 2021-09-27T23:09:59.11
IV.CSP1.EHE. ML:1.3 0.000269 0.46 AML other m 2021-09-27T23:09:59.58
IV.CESI.HHN. ML:0.8 5.475E-5 0.44 AML other m 2021-09-27T23:10:01.38
IV.GUMA.HHE. ML:1.4 0.0001835 0.3 AML other m 2021-09-27T23:10:02.02
IV.GUMA.HHN. ML:1.2 0.0001246 1.02 AML other m 2021-09-27T23:10:02.10
IV.CESI.HHE. ML:0.7 4.62E-5 1.58 AML other m 2021-09-27T23:10:02.88
IV.NRCA.HHN. ML:1.1 7.34E-5 0.86 AML other m 2021-09-27T23:10:03.56
IV.NRCA.HHE. ML:1 6.845E-5 0.74 AML other m 2021-09-27T23:10:03.36
IV.ASSB.HHE. ML:0.9 3.29E-5 1.52 AML other m 2021-09-27T23:10:06.92
IV.ASSB.HHN. ML:1 4.02E-5 1.46 AML other m 2021-09-27T23:10:06.19
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