Earthquake with magnitude of ML 0.9 on date 31-10-2020 and time 19:48:45 (Italy) in region 3 km E Sant'Angelo in Pontano (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km E Sant'Angelo in Pontano (MC), on

  • 31-10-2020 18:48:45 (UTC)
  • 31-10-2020 19:48:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1, 13.43 at 25 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 3 1436 1436
Falerone FM 4 3337 4773
Penna San Giovanni MC 4 1108 5881
Servigliano FM 5 2336 8217
Monte Vidon Corrado FM 5 731 8948
Montappone FM 6 1682 10630
Monte San Martino MC 7 765 11395
Massa Fermana FM 7 963 12358
Ripe San Ginesio MC 8 852 13210
Loro Piceno MC 8 2401 15611
Gualdo MC 8 815 16426
Belmonte Piceno FM 9 646 17072
Monteleone di Fermo FM 9 395 17467
Montegiorgio FM 9 6851 24318
San Ginesio MC 10 3498 27816
Santa Vittoria in Matenano FM 10 1330 29146
Smerillo FM 10 365 29511
Colmurano MC 10 1263 30774
Monsampietro Morico FM 10 659 31433
Mogliano MC 11 4696 36129
Montelparo FM 12 778 36907
Montefalcone Appennino FM 12 424 37331
Urbisaglia MC 12 2628 39959
Sarnano MC 13 3264 43223
Montottone FM 13 979 44202
Magliano di Tenna FM 13 1452 45654
Grottazzolina FM 14 3398 49052
Francavilla d'Ete FM 14 964 50016
Monte Rinaldo FM 14 379 50395
Amandola FM 14 3629 54024
Cessapalombo MC 14 512 54536
Camporotondo di Fiastrone MC 14 563 55099
Petriolo MC 14 1998 57097
Rapagnano FM 15 2145 59242
Comunanza AP 15 3166 62408
Force AP 15 1354 63762
Ortezzano FM 16 774 64536
Monte Giberto FM 16 801 65337
Monte San Pietrangeli FM 16 2458 67795
Monte Vidon Combatte FM 17 433 68228
Torre San Patrizio FM 17 2048 70276
Caldarola MC 18 1823 72099
Tolentino MC 18 20069 92168
Belforte del Chienti MC 18 1886 94054
Corridonia MC 18 15430 109484
Ponzano di Fermo FM 18 1674 111158
Petritoli FM 18 2335 113493
Montefortino FM 18 1178 114671
Montalto delle Marche AP 18 2122 116793
Montedinove AP 19 488 117281
Rotella AP 19 906 118187

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km NW of Teramo (54892 inhabitants)
59 Km S of Ancona (100861 inhabitants)
61 Km E of Foligno (57155 inhabitants)
83 Km N of L'Aquila (69753 inhabitants)
85 Km E of Perugia (166134 inhabitants)
87 Km NW of Montesilvano (53738 inhabitants)
87 Km NE of Terni (111501 inhabitants)
90 Km SE of Fano (60888 inhabitants)
95 Km NW of Pescara (121014 inhabitants)
100 Km SE of Pesaro (94582 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 0.9 2020-10-31
18:48:45
43.09 13.43 25 2020-10-31
19:27:37
Sala Sismica INGV-Roma 84330051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 18:48:45 ± 0.08
Latitude 43.09 ± 0.00
Longitude 13.43 ± 0.00
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84330051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 396
Semi-minor axis of confidence ellipse (meter) 331
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 183
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 261
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) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.35074
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 84330051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 19:27:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-10-31T18:48:58.81 0.3 undecidable manual S 222 0.3507 116 -0.01 72
IV.MC2.EHZ. 2020-10-31T18:48:56.44 0.1 undecidable manual S 224 0.2563 125 0.03 97
IV.FDMO.HHZ. 2020-10-31T18:48:56.45 0.1 undecidable manual S 257 0.2599 125 -0.04 98
IV.CSP1.EHZ. 2020-10-31T18:48:54.43 0.1 undecidable manual S 269 0.1673 139 -0.01 100
IV.MF5.EHZ. 2020-10-31T18:48:53.35 0.1 undecidable manual S 170 0.1088 151 -0.08 100
IV.NRCA.HHZ. 2020-10-31T18:48:52.88 0.1 undecidable manual P 222 0.3507 116 -0.14 93
IV.MC2.EHZ. 2020-10-31T18:48:51.68 0.1 undecidable manual P 224 0.2563 125 0.05 98
IV.FDMO.HHZ. 2020-10-31T18:48:51.68 0.1 undecidable manual P 257 0.2599 125 0 98
IV.MF5.EHZ. 2020-10-31T18:48:50.02 0.1 undecidable manual P 170 0.1088 151 0.11 99
IV.CSP1.EHZ. 2020-10-31T18:48:50.50 0.1 undecidable manual P 269 0.1673 139 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 4.89E-5 0.12 AML other m 2020-10-31T18:48:59.05
IV.NRCA.HHE. ML:1.2 4.35E-5 0.78 AML other m 2020-10-31T18:48:59.59
IV.FDMO.HHE. ML:0.7 2.142279E-5 0.2304 AML other m 2020-10-31T18:48:56.65
IV.FDMO.HHN. ML:0.4 9.280794215E-6 0.1408 AML other m 2020-10-31T18:48:56.55
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download