Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 26-12-2021 and time 09:40:01 (UTC) in region 2 km E Muccia (MC)

A magnitude ML 0.5 earthquake occured in region: 2 km E Muccia (MC), on

  • 26-12-2021 09:40:01 (UTC)
  • 26-12-2021 10:40:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0800, 13.0650 at 3 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Muccia MC 2 915 915
Pievebovigliana MC 3 866 1781
Pieve Torina MC 4 1458 3239
Fiordimonte MC 5 202 3441
Camerino MC 6 6974 10415
Fiastra MC 9 559 10974
Serravalle di Chienti MC 9 1070 12044
Acquacanina MC 11 121 12165
Monte Cavallo MC 11 145 12310
Sefro MC 12 422 12732
Pioraco MC 13 1134 13866
Castelraimondo MC 15 4587 18453
Caldarola MC 15 1823 20276
Serrapetrona MC 15 966 21242
Cessapalombo MC 16 512 21754
Ussita MC 16 444 22198
Fiuminata MC 16 1402 23600
Bolognola MC 16 142 23742
Visso MC 17 1107 24849
Belforte del Chienti MC 17 1886 26735
Camporotondo di Fiastrone MC 17 563 27298
Gagliole MC 18 620 27918
San Severino Marche MC 19 12726 40644
Sarnano MC 20 3264 43908

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
55 Km E of Perugia (166134 inhabitants)
67 Km NE of Terni (111501 inhabitants)
70 Km NW of Teramo (54892 inhabitants)
70 Km SW of Ancona (100861 inhabitants)
85 Km S of Fano (60888 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 0.5 2021-12-26
09:40:01		 43.0802 13.0647 3 2022-03-30
13:04:42		 Bollettino Sismico Italiano INGV 102284121
Reviewed
Rev100 		Md 1.3 2021-12-26
09:40:01		 42.9923 13.1193 5 2021-12-26
09:44:38		 Sala Sismica INGV-Roma 99001321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-26 09:40:01 ± 0.08
Latitude 43.0802 ± 0.0036
Longitude 13.0647 ± 0.0037
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102284121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 320
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.19156
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.5
Num. used stations 2
Type of magnitude ML
Reference to an origin 102284121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-23 11:35:09

Md:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 3
Type of magnitude Md
Reference to an origin 99001321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-26 09:44:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFE.HHZ. 2021-12-26T09:40:56.52 3.0 undecidable manual Sg 5.62 0
IX.RSF3.HHZ.02 2021-12-26T09:40:51.19 3.0 undecidable manual Sn -0.34 0
IV.MRB1.HHZ. 2021-12-26T09:40:48.14 3.0 undecidable manual Sn 1.97 0
IV.MC2.EHZ. 2021-12-26T09:40:09.32 0.6 undecidable manual S 152 21.2676 98 -0.09 48
IV.VVLD.HHZ. 2021-12-26T09:40:09.28 3.0 undecidable manual P 0.88 0
IV.CESI.HHZ. 2021-12-26T09:40:07.60 0.6 undecidable manual S 237 15.4734 101 0.18 48
IV.MC2.EHZ. 2021-12-26T09:40:06.40 0.3 undecidable manual P 152 21.2676 98 0.14 72
IV.CSP1.EHZ. 2021-12-26T09:40:06.22 0.6 undecidable manual S 83 11.4774 105 0.15 49
IV.PF6.EHN. 2021-12-26T09:40:06.44 0.6 undecidable manual S 59 12.2766 104 0.08 49
IV.CESI.HHZ. 2021-12-26T09:40:05.01 0.3 undecidable manual P 237 15.4734 101 -0.1 73
IV.CSP1.EHZ. 2021-12-26T09:40:04.31 0.1 undecidable manual P 83 11.4774 105 -0.02 100
IV.PF6.EHN. 2021-12-26T09:40:04.40 0.1 undecidable manual P 59 12.2766 104 -0.1 98
IV.FDMO.HHZ. 2021-12-26T09:40:04.03 0.3 undecidable manual S 159 5.1948 121 -0.02 76
IV.FDMO.HHZ. 2021-12-26T09:40:03.11 0.1 undecidable manual P 159 5.1948 121 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.0 0.00009322512499999999 0.1344 AML other m 2021-12-26T09:40:04.12
IV.CSP1.EHE. ML:0.8 0.00009516272600000001 0.2816 AML other m 2021-12-26T09:40:06.50
IV.CESI.HHN. ML:0.1 0.000015071487 0.2624 AML other m 2021-12-26T09:40:10.68
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