Earthquake with magnitude of ML 1.0 on date 29-07-2021 and time 05:17:27 (Italy) in region 2 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.0 earthquake occured in region: 2 km E Castelsantangelo sul Nera (MC), on

  • 29-07-2021 03:17:27 (UTC)
  • 29-07-2021 05:17:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.894, 13.181 at 12 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
Castelsantangelo sul Nera MC 2 281 281
Ussita MC 7 444 725
Visso MC 9 1107 1832
Preci PG 12 724 2556
Bolognola MC 12 142 2698
Montemonaco AP 12 604 3302
Norcia PG 13 4957 8259
Montegallo AP 14 523 8782
Montefortino FM 14 1178 9960
Acquacanina MC 15 121 10081
Fiastra MC 16 559 10640
Arquata del Tronto AP 16 1178 11818
Amandola FM 17 3629 15447
Fiordimonte MC 18 202 15649
Monte Cavallo MC 18 145 15794
Sarnano MC 19 3264 19058
Pieve Torina MC 20 1458 20516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
63 Km N of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 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 1.0 2021-07-29
03:17:27
42.894 13.1808 12 2021-07-29
03:22:58
Sala Sismica INGV-Roma 93326911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-29 03:17:27 ± 0.09
Latitude 42.8940 ± 0.0054
Longitude 13.1808 ± 0.0061
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93326911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 28
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48114
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 93326911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-29 03:22:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RMP.HHZ. 2021-07-29T03:18:03.91 3.0 undecidable manual S -0.05 0
IV.MF5.EHZ. 2021-07-29T03:17:37.11 0.6 undecidable manual S 65 0.2248 95 0.36 46
IV.CESI.HHZ. 2021-07-29T03:17:37.18 0.6 undecidable manual S 299 0.2302 95 0.25 48
IV.CING.HHZ. 2021-07-29T03:17:37.22 1.0 positive manual P 1 0.4811 91 -0.07 24
IV.MML1.EHZ. 2021-07-29T03:17:37.98 0.6 undecidable manual S 325 0.2671 94 -0.04 50
IV.CSP1.EHZ. 2021-07-29T03:17:35.81 0.6 undecidable manual S 5 0.1988 97 -0.18 50
IV.TERO.HHZ. 2021-07-29T03:17:35.90 0.6 positive manual P 131 0.4119 92 -0.2 47
IV.CESI.HHZ. 2021-07-29T03:17:33.06 0.3 undecidable manual P 299 0.2302 95 0.06 75
IV.MML1.EHZ. 2021-07-29T03:17:33.68 0.6 positive manual P 325 0.2671 94 0.05 49
IV.SMA1.EHZ. 2021-07-29T03:17:33.79 0.6 undecidable manual P 157 0.2869 93 -0.17 49
IV.MF5.EHZ. 2021-07-29T03:17:33.09 1.0 negative manual P 65 0.2248 95 0.19 24
IV.CSP1.EHZ. 2021-07-29T03:17:32.33 0.1 negative manual P 5 0.1988 97 -0.12 100
IV.MC2.EHZ. 2021-07-29T03:17:31.78 0.6 undecidable manual S 19 0.018 168 -0.03 52
IV.MC2.EHZ. 2021-07-29T03:17:30.07 1.0 undecidable manual P 19 0.018 168 0.03 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.3 0.00010385 0.24 AML other m 2021-07-29T03:17:37.57
IV.CESI.HHE. ML:1 5.375E-5 0.34 AML other m 2021-07-29T03:17:37.34
IV.MML1.EHN. ML:1.1 5.295E-5 0.42 AML other m 2021-07-29T03:17:38.36
IV.SMA1.EHN. ML:1 4.23E-5 0.62 AML other m 2021-07-29T03:17:38.63
IV.MML1.EHE. ML:0.9 4.095E-5 0.44 AML other m 2021-07-29T03:17:38.92
IV.SMA1.EHE. ML:1 4.08E-5 0.52 AML other m 2021-07-29T03:17:39.96
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