Earthquake with magnitude of ML 1.8 on date 22-10-2021 and time 07:01:41 (Italy) in region 2 km NW Sant'Angelo in Pontano (MC)

A magnitude ML 1.8 earthquake occured in region: 2 km NW Sant'Angelo in Pontano (MC), on

  • 22-10-2021 05:01:41 (UTC)
  • 22-10-2021 07:01:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.108, 13.381 at 24 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
Sant'Angelo in Pontano MC 2 1436 1436
Ripe San Ginesio MC 4 852 2288
San Ginesio MC 5 3498 5786
Gualdo MC 6 815 6601
Penna San Giovanni MC 7 1108 7709
Colmurano MC 7 1263 8972
Loro Piceno MC 7 2401 11373
Falerone FM 8 3337 14710
Montappone FM 8 1682 16392
Monte Vidon Corrado FM 9 731 17123
Massa Fermana FM 9 963 18086
Servigliano FM 10 2336 20422
Camporotondo di Fiastrone MC 10 563 20985
Monte San Martino MC 10 765 21750
Cessapalombo MC 10 512 22262
Urbisaglia MC 10 2628 24890
Sarnano MC 10 3264 28154
Mogliano MC 12 4696 32850
Smerillo FM 13 365 33215
Belmonte Piceno FM 13 646 33861
Caldarola MC 13 1823 35684
Montegiorgio FM 13 6851 42535
Belforte del Chienti MC 13 1886 44421
Santa Vittoria in Matenano FM 14 1330 45751
Tolentino MC 14 20069 65820
Monteleone di Fermo FM 14 395 66215
Amandola FM 14 3629 69844
Petriolo MC 15 1998 71842
Montefalcone Appennino FM 15 424 72266
Monsampietro Morico FM 15 659 72925
Montelparo FM 16 778 73703
Francavilla d'Ete FM 16 964 74667
Comunanza AP 17 3166 77833
Magliano di Tenna FM 17 1452 79285
Serrapetrona MC 17 966 80251
Montottone FM 17 979 81230
Bolognola MC 18 142 81372
Grottazzolina FM 18 3398 84770
Pollenza MC 18 6618 91388
Rapagnano FM 18 2145 93533
Force AP 18 1354 94887
Monte Rinaldo FM 19 379 95266
Montefortino FM 19 1178 96444
Acquacanina MC 19 121 96565
Monte San Pietrangeli FM 19 2458 99023
Corridonia MC 19 15430 114453
Fiastra MC 20 559 115012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km NW of Teramo (54892 inhabitants)
58 Km E of Foligno (57155 inhabitants)
58 Km S of Ancona (100861 inhabitants)
81 Km E of Perugia (166134 inhabitants)
84 Km N of L'Aquila (69753 inhabitants)
85 Km NE of Terni (111501 inhabitants)
87 Km SE of Fano (60888 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
97 Km SE of Pesaro (94582 inhabitants)
99 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 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 1.8 2021-10-22
05:01:41
43.1078 13.3808 24 2021-10-22
05:09:45
Sala Sismica INGV-Roma 96867261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-22 05:01:41 ± 0.18
Latitude 43.1078 ± 0.0063
Longitude 13.3808 ± 0.0111
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96867261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 880
Semi-minor axis of confidence ellipse (meter) 233
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 880
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36243
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 96867261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-22 05:09:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HNE. 2021-10-22T05:01:55.47 0.3 undecidable manual S 254 0.3624 113 0.51 65
IV.CING.HHZ. 2021-10-22T05:01:53.49 0.1 undecidable manual S 333 0.2995 118 0.21 93
IV.MC2.EHZ. 2021-10-22T05:01:52.15 0.1 undecidable manual S 216 0.241 125 0.34 93
IV.FDMO.HHZ. 2021-10-22T05:01:51.40 0.3 undecidable manual S 252 0.2257 127 -0.04 75
IV.MMO1.EHZ. 2021-10-22T05:01:50.91 0.1 undecidable manual S 191 0.2122 129 -0.2 95
IV.CSP1.EHZ. 2021-10-22T05:01:49.32 0.3 undecidable manual S 263 0.1295 145 -0.11 75
IV.MNTT.EHZ. 2021-10-22T05:01:49.04 3.0 positive manual P 2.99 0
IV.MF5.EHZ. 2021-10-22T05:01:49.85 0.1 undecidable manual S 154 0.1331 144 0.36 94
IV.PF6.EHZ. 2021-10-22T05:01:49.29 0.1 undecidable manual S 283 0.1394 142 -0.31 96
IV.CESI.HNE. 2021-10-22T05:01:49.27 0.1 undecidable manual P 254 0.3624 113 0.18 94
IV.NRCA.HHZ. 2021-10-22T05:01:48.62 0.1 undecidable manual P 216 0.3363 115 -0.06 95
IV.CING.HHZ. 2021-10-22T05:01:48.10 0.1 undecidable manual P 333 0.2995 118 -0.02 98
IV.MML1.EHZ. 2021-10-22T05:01:48.17 0.1 undecidable manual P 271 0.2986 118 0.07 97
IV.MC2.EHZ. 2021-10-22T05:01:47.10 0.1 undecidable manual P 216 0.241 125 -0.17 95
IV.FDMO.HHZ. 2021-10-22T05:01:46.94 0.1 undecidable manual P 252 0.2257 127 -0.11 97
IV.MF5.EHZ. 2021-10-22T05:01:46.03 0.1 undecidable manual P 154 0.1331 144 0.1 100
IV.MMO1.EHZ. 2021-10-22T05:01:46.68 0.1 undecidable manual P 191 0.2122 129 -0.19 95
IV.PF6.EHZ. 2021-10-22T05:01:45.73 0.1 undecidable manual P 283 0.1394 142 -0.26 96
IV.CSP1.EHZ. 2021-10-22T05:01:45.78 0.1 undecidable manual P 263 0.1295 145 -0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHN. ML:2.1 0.0008975 0.62 AML other m 2021-10-22T05:01:48.23
IV.SAP2.EHE. ML:1.6 0.0002645 0.18 AML other m 2021-10-22T05:01:48.55
IV.CSP1.EHN. ML:1.4 0.0001495 0.2 AML other m 2021-10-22T05:01:49.36
IV.CSP1.EHE. ML:1.4 0.000152 1.02 AML other m 2021-10-22T05:01:50.60
IV.MNTT.EHN. ML:1.7 0.00029 0.68 AML other m 2021-10-22T05:01:51.54
IV.FDMO.HHE. ML:1.7 0.000201 0.16 AML other m 2021-10-22T05:01:51.65
IV.FDMO.HHN. ML:1.4 0.0001115 0.12 AML other m 2021-10-22T05:01:51.76
IV.MNTT.EHE. ML:2.1 0.0006035 0.86 AML other m 2021-10-22T05:01:51.34
IV.NRCA.HHN. ML:1.6 0.0001365 0.16 AML other m 2021-10-22T05:01:54.61
IV.NRCA.HHE. ML:2 0.0003 0.14 AML other m 2021-10-22T05:01:54.58
IV.FAGN.HHE. ML:2.4 0.000249 0.1 AML other m 2021-10-22T05:02:15.16
IV.TREG.EHE. ML:3.1 0.00011805 0.28 AML other m 2021-10-22T05:02:21.27
IV.FAGN.HHN. ML:1.9 9.015E-5 0.7 AML other m 2021-10-22T05:02:23.57
IV.VOBA.EHN. ML:3.6 0.0003065 0.08 AML other m 2021-10-22T05:02:23.74
IV.VOBA.EHE. ML:3.5 0.000245 0.1 AML other m 2021-10-22T05:02:28.47
IV.TREG.EHN. ML:3 9.73E-5 0.5 AML other m 2021-10-22T05:03:12.54
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