Earthquake with magnitude of ML 1.2 on date 24-09-2021 and time 23:22:01 (UTC) in region 2 km S Cascia (PG)

A magnitude ML 1.2 earthquake occured in region: 2 km S Cascia (PG), on

  • 24-09-2021 23:22:01 (UTC)
  • 25-09-2021 01:22:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7, 13.01 at 11 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 2 3217 3217
Poggiodomo PG 6 117 3334
Monteleone di Spoleto PG 7 599 3933
Norcia PG 13 4957 8890
Vallo di Nera PG 14 364 9254
Scheggino PG 15 461 9715
Sant'Anatolia di Narco PG 15 564 10279
Cittareale RI 15 482 10761
Cerreto di Spoleto PG 15 1075 11836
Leonessa RI 16 2435 14271
Polino TR 19 233 14504
Accumoli RI 20 667 15171
Ferentillo TR 20 1913 17084

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Terni (111501 inhabitants)
38 Km SE of Foligno (57155 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
57 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
80 Km E of Viterbo (67173 inhabitants)
81 Km N of Guidonia Montecelio (88673 inhabitants)
84 Km N of Tivoli (56533 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
100 Km NE of Roma (2864731 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 1.2 2021-09-24
23:22:01
42.6998 13.0098 11 2021-09-24
23:28:56
Sala Sismica INGV-Roma 95847211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-24 23:22:01 ± 0.06
Latitude 42.6998 ± 0.0036
Longitude 13.0098 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95847211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 365
Semi-minor axis of confidence ellipse (meter) 351
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 127
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.63222
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 95847211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-24 23:28:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2021-09-24T23:22:17.36 0.6 undecidable manual S 49 0.438 50 0.86 38
IV.TERO.HHZ. 2021-09-24T23:22:16.53 0.6 undecidable manual S 100 0.4434 50 -0.14 48
IV.CSP1.EHZ. 2021-09-24T23:22:16.07 0.6 undecidable manual S 20 0.4173 50 0.19 47
IV.MML1.EHZ. 2021-09-24T23:22:16.21 0.6 undecidable manual S 356 0.4146 50 0.4 45
IV.ASSB.HHZ. 2021-09-24T23:22:16.39 0.6 undecidable manual S 323 0.4281 50 0.17 48
IV.MOMA.HHZ. 2021-09-24T23:22:13.69 0.6 undecidable manual S 288 0.339 50 0.11 49
IV.EL6.EHZ. 2021-09-24T23:22:13.36 1.0 undecidable manual P 6 0.6322 50 0.06 23
IV.FDMO.HHZ. 2021-09-24T23:22:13.55 0.6 undecidable manual S 10 0.3408 50 -0.09 49
IV.MMO1.EHZ. 2021-09-24T23:22:12.40 0.6 undecidable manual S 49 0.3058 50 -0.21 48
IV.CESI.HHZ. 2021-09-24T23:22:12.72 0.6 undecidable manual S 346 0.3148 50 -0.13 49
IV.MNTT.EHZ. 2021-09-24T23:22:12.24 3.0 positive manual P -0.01 0
IV.SMA1.EHZ. 2021-09-24T23:22:11.32 0.6 undecidable manual S 106 0.2491 50 0.41 47
IV.RM33.EHZ. 2021-09-24T23:22:10.50 0.6 undecidable manual S 142 0.2428 50 -0.24 49
IV.MF5.EHZ. 2021-09-24T23:22:10.50 1.0 undecidable manual P 49 0.438 50 0.54 22
IV.MC2.EHZ. 2021-09-24T23:22:10.99 0.6 undecidable manual S 32 0.2491 50 0.09 50
IV.ASSB.HHZ. 2021-09-24T23:22:09.72 1.0 undecidable manual P 323 0.4281 50 -0.09 24
IV.ARRO.EHZ. 2021-09-24T23:22:09.17 0.6 undecidable manual S 236 0.2158 50 -0.77 41
IV.TERO.HHZ. 2021-09-24T23:22:09.93 0.3 undecidable manual P 100 0.4434 50 -0.14 72
IV.CSP1.EHZ. 2021-09-24T23:22:09.48 1.0 positive manual P 20 0.4173 50 -0.13 24
IV.MML1.EHZ. 2021-09-24T23:22:09.56 0.6 positive manual P 356 0.4146 50 0 49
IV.FDMO.HHZ. 2021-09-24T23:22:08.08 0.6 negative manual P 10 0.3408 50 -0.24 48
IV.MOMA.HHZ. 2021-09-24T23:22:08.29 0.6 negative manual P 288 0.339 50 0.01 50
IV.NRCA.HHZ. 2021-09-24T23:22:07.45 0.6 undecidable manual S 30 0.1538 123 -0.62 45
IV.MMO1.EHZ. 2021-09-24T23:22:07.50 0.6 positive manual P 49 0.3058 50 -0.22 48
IV.CESI.HHZ. 2021-09-24T23:22:07.75 0.3 negative manual P 346 0.3148 50 -0.11 74
IV.MC2.EHZ. 2021-09-24T23:22:06.67 0.6 positive manual P 32 0.2491 50 -0.06 50
IV.SMA1.EHZ. 2021-09-24T23:22:06.88 0.3 negative manual P 106 0.2491 50 0.14 74
IV.GAVE.EHZ. 2021-09-24T23:22:06.22 0.6 undecidable manual S 265 0.0854 139 0.17 51
IV.ARRO.EHZ. 2021-09-24T23:22:06.26 0.6 negative manual P 236 0.2158 50 0.08 50
IV.LNSS.HHZ. 2021-09-24T23:22:06.53 0.6 undecidable manual S 167 0.0998 135 0.1 51
IV.RM33.EHZ. 2021-09-24T23:22:06.54 0.3 undecidable manual P 142 0.2428 50 -0.1 75
IV.LNSS.HHZ. 2021-09-24T23:22:04.34 0.3 undecidable manual P 167 0.0998 135 0.19 76
IV.NRCA.HHZ. 2021-09-24T23:22:04.89 0.1 negative manual P 30 0.1538 123 -0.21 99
IV.GAVE.EHZ. 2021-09-24T23:22:04.18 0.1 undecidable manual P 265 0.0854 139 0.25 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.5 0.0003765 0.14 AML other m 2021-09-24T23:22:06.32
IV.LNSS.HHN. ML:1.6 0.0004115 0.14 AML other m 2021-09-24T23:22:06.85
IV.GAVE.EHN. ML:1.4 0.0003405 1.8 AML other m 2021-09-24T23:22:06.03
IV.LNSS.HHE. ML:1.8 0.000766 1.88 AML other m 2021-09-24T23:22:06.03
IV.NRCA.HHN. ML:1.6 0.000324 0.92 AML other m 2021-09-24T23:22:07.59
IV.NRCA.HHE. ML:1.6 0.000329 0.44 AML other m 2021-09-24T23:22:08.85
IV.ARRO.EHE. ML:1.1 6.88E-5 1.14 AML other m 2021-09-24T23:22:10.13
IV.ARRO.EHN. ML:1 5.77E-5 1.06 AML other m 2021-09-24T23:22:11.39
IV.RM33.EHN. ML:1 4.875E-5 0.26 AML other m 2021-09-24T23:22:11.77
IV.SMA1.EHE. ML:1.1 7.075E-5 0.34 AML other m 2021-09-24T23:22:11.80
IV.SMA1.EHN. ML:1 5.305E-5 1.32 AML other m 2021-09-24T23:22:12.19
IV.RM33.EHE. ML:1.2 8.505E-5 0.4 AML other m 2021-09-24T23:22:12.57
IV.CESI.HHN. ML:1.2 7.05E-5 1.18 AML other m 2021-09-24T23:22:12.98
IV.CESI.HHE. ML:1 4.395E-5 0.66 AML other m 2021-09-24T23:22:13.99
IV.FDMO.HHN. ML:1 4.05E-5 1.84 AML other m 2021-09-24T23:22:14.94
IV.FDMO.HHE. ML:1.1 4.345E-5 1.24 AML other m 2021-09-24T23:22:14.10
IV.MOMA.HHN. ML:1 3.775E-5 1.66 AML other m 2021-09-24T23:22:15.95
IV.MOMA.HHE. ML:1 4.16E-5 0.12 AML other m 2021-09-24T23:22:15.45
IV.MML1.EHN. ML:1.2 5.11E-5 0.14 AML other m 2021-09-24T23:22:16.61
IV.MML1.EHE. ML:1.1 3.86E-5 0.6 AML other m 2021-09-24T23:22:17.17
IV.ASSB.HHE. ML:1.2 4.03E-5 0.96 AML other m 2021-09-24T23:22:17.79
IV.ASSB.HHN. ML:1 2.96E-5 1.44 AML other m 2021-09-24T23:22:18.00
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