Earthquake with magnitude of ML 1.5 on date 28-11-2021 and time 17:19:11 (UTC) in region 4 km NE Cascia (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km NE Cascia (PG), on

  • 28-11-2021 17:19:11 (UTC)
  • 28-11-2021 18:19:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.749, 13.033 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
Cascia PG 4 3217 3217
Norcia PG 7 4957 8174
Poggiodomo PG 9 117 8291
Cerreto di Spoleto PG 12 1075 9366
Monteleone di Spoleto PG 13 599 9965
Vallo di Nera PG 14 364 10329
Preci PG 15 724 11053
Sant'Anatolia di Narco PG 16 564 11617
Scheggino PG 17 461 12078
Sellano PG 18 1079 13157
Cittareale RI 18 482 13639
Accumoli RI 19 667 14306
Castelsantangelo sul Nera MC 19 281 14587

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
38 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
56 Km W of Teramo (54892 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
84 Km E of Viterbo (67173 inhabitants)
87 Km N of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
95 Km W of Montesilvano (53738 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 1.5 2021-11-28
17:19:11
42.7487 13.0327 10 2021-11-28
17:47:26
Sala Sismica INGV-Roma 97914351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-28 17:19:11 ± 0.06
Latitude 42.7487 ± 0.0045
Longitude 13.0327 ± 0.0049
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 97914351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 600
Semi-minor axis of confidence ellipse (meter) 240
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 144
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.4011
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 97914351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-28 17:47:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-11-28T17:19:21.60 0.3 undecidable manual S 55 0.2626 50 -0.12 72
IV.ASSB.HHZ. 2021-11-28T17:19:19.85 0.6 negative manual P 317 0.4011 50 0.17 46
IV.SMA1.EHZ. 2021-11-28T17:19:17.24 0.6 negative manual P 118 0.2518 50 0.11 48
IV.CESI.HHZ. 2021-11-28T17:19:17.47 0.1 undecidable manual P 340 0.2725 50 -0.01 98
IV.FDMO.HHZ. 2021-11-28T17:19:17.76 0.1 undecidable manual P 8 0.2905 50 -0.03 98
IV.MMO1.EHZ. 2021-11-28T17:19:17.23 0.6 positive manual P 55 0.2626 50 -0.09 48
IV.GAVE.EHZ. 2021-11-28T17:19:16.85 0.3 undecidable manual S 241 0.116 129 -0.18 73
IV.NRCA.HHZ. 2021-11-28T17:19:16.59 0.3 undecidable manual S 35 0.1034 132 -0.07 75
IV.NRCA.HHZ. 2021-11-28T17:19:14.54 0.1 negative manual P 35 0.1034 132 0.14 99
IV.GAVE.EHZ. 2021-11-28T17:19:14.68 0.1 positive manual P 241 0.116 129 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.0003335 0.08 AML other m 2021-11-28T17:19:16.66
IV.NRCA.HHE. ML:1.8 0.000709 0.16 AML other m 2021-11-28T17:19:16.79
IV.GAVE.EHN. ML:1.2 0.0001575 1.02 AML other m 2021-11-28T17:19:17.43
IV.GAVE.EHE. ML:1.3 0.000206 1.82 AML other m 2021-11-28T17:19:17.06
IV.NRCA.HNE. ML:1.8 0.00070498555 0.1664 AML other m 2021-11-28T17:19:16.79
IV.NRCA.HNN. ML:1.4 0.0002797962 0.0768 AML other m 2021-11-28T17:19:16.70
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