Earthquake with magnitude of ML 0.9 on date 29-11-2021 and time 13:28:41 (Italy) in region 3 km SW Bolognola (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Bolognola (MC), on

  • 29-11-2021 12:28:41 (UTC)
  • 29-11-2021 13:28:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.978, 13.196 at 7 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
Bolognola MC 3 142 142
Ussita MC 6 444 586
Acquacanina MC 6 121 707
Fiastra MC 7 559 1266
Castelsantangelo sul Nera MC 10 281 1547
Visso MC 10 1107 2654
Sarnano MC 11 3264 5918
Fiordimonte MC 11 202 6120
Montefortino FM 13 1178 7298
Amandola FM 13 3629 10927
Pievebovigliana MC 13 866 11793
Montemonaco AP 14 604 12397
Pieve Torina MC 14 1458 13855
Gualdo MC 15 815 14670
Cessapalombo MC 16 512 15182
Monte Cavallo MC 16 145 15327
Preci PG 17 724 16051
Muccia MC 17 915 16966
San Ginesio MC 18 3498 20464
Comunanza AP 18 3166 23630
Caldarola MC 18 1823 25453
Camporotondo di Fiastrone MC 18 563 26016
Montegallo AP 19 523 26539

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
64 Km NE of Terni (111501 inhabitants)
67 Km E of Perugia (166134 inhabitants)
72 Km N of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
97 Km S of Fano (60888 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 0.9 2021-11-29
12:28:41
42.9777 13.1958 7 2021-11-29
12:41:46
Sala Sismica INGV-Roma 97939871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-29 12:28:41 ± 0.11
Latitude 42.9777 ± 0.0018
Longitude 13.1958 ± 0.0037
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97939871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 12
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
Epicentral distance of station farthest from the epicenter (degree) 0.21494
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 97939871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-29 12:41:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-11-29T12:29:11.56 3.0 undecidable manual Pg 4.81 0
IV.VIVA.HHZ. 2021-11-29T12:29:04.91 3.0 positive manual P 3.63 0
IV.LAV9.HNZ. 2021-11-29T12:29:02.43 3.0 undecidable manual P -0.01 0
IV.BLLA.EHZ. 2021-11-29T12:29:01.84 3.0 negative manual Pg -0.07 0
IV.CESI.HHN. 2021-11-29T12:28:50.01 0.6 undecidable manual S 277 0.2149 106 0.29 46
IV.ASSB.HHZ. 2021-11-29T12:28:48.83 3.0 undecidable manual Pg 0.26 0
IV.NRCA.HNE. 2021-11-29T12:28:47.67 0.3 undecidable manual S 203 0.1556 112 0.09 73
IV.CSP1.EHZ. 2021-11-29T12:28:46.17 0.6 undecidable manual S 3 0.1142 119 0.04 50
IV.MMO1.EHE. 2021-11-29T12:28:46.49 0.1 undecidable manual S 129 0.1241 117 0.04 100
IV.CESI.HHN. 2021-11-29T12:28:45.98 0.1 undecidable manual P 277 0.2149 106 -0.09 97
IV.FDMO.HHZ. 2021-11-29T12:28:45.49 0.6 undecidable manual S 307 0.0989 123 -0.13 49
IV.NRCA.HNE. 2021-11-29T12:28:44.74 0.1 undecidable manual P 203 0.1556 112 -0.1 98
IV.CSP1.EHZ. 2021-11-29T12:28:44.11 0.6 negative manual P 3 0.1142 119 0.1 49
IV.MC2.EHZ. 2021-11-29T12:28:44.51 0.6 undecidable manual S 184 0.0665 134 -0.12 50
IV.MMO1.EHE. 2021-11-29T12:28:44.17 0.1 undecidable manual P 129 0.1241 117 -0.02 100
IV.FDMO.HHZ. 2021-11-29T12:28:43.64 0.3 negative manual P 307 0.0989 123 -0.07 75
IV.MC2.EHZ. 2021-11-29T12:28:43.22 0.3 negative manual P 184 0.0665 134 0.08 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MC2.EHN. ML:1.6 0.000816 0.26 AML other m 2021-11-29T12:28:44.80
IV.MC2.EHE. ML:1.2 0.000337 1.12 AML other m 2021-11-29T12:28:45.87
IV.FDMO.HHE. ML:0.3 2.947308E-5 0.1792 AML other m 2021-11-29T12:28:45.75
IV.FDMO.HHN. ML:0.4 3.6439851E-5 0.16 AML other m 2021-11-29T12:28:46.76
IV.CSP1.EHE. ML:0.9 9.721596E-5 0.4416 AML other m 2021-11-29T12:28:48.23
IV.CSP1.EHN. ML:1 0.00011394031 0.16 AML other m 2021-11-29T12:28:46.99
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