Earthquake with magnitude of ML 0.7 on date 22-08-2021 and time 10:44:33 (Italy) in region 3 km S Tolentino (MC)

A magnitude ML 0.7 earthquake occured in region: 3 km S Tolentino (MC), on

  • 22-08-2021 08:44:33 (UTC)
  • 22-08-2021 10:44:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.185, 13.29 at 23 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
Tolentino MC 3 20069 20069
Belforte del Chienti MC 5 1886 21955
Colmurano MC 6 1263 23218
Camporotondo di Fiastrone MC 6 563 23781
Caldarola MC 7 1823 25604
Urbisaglia MC 7 2628 28232
Ripe San Ginesio MC 8 852 29084
Serrapetrona MC 8 966 30050
San Ginesio MC 9 3498 33548
Cessapalombo MC 9 512 34060
Pollenza MC 10 6618 40678
San Severino Marche MC 10 12726 53404
Loro Piceno MC 11 2401 55805
Sant'Angelo in Pontano MC 13 1436 57241
Gualdo MC 14 815 58056
Treia MC 14 9403 67459
Petriolo MC 15 1998 69457
Mogliano MC 16 4696 74153
Massa Fermana FM 16 963 75116
Montappone FM 16 1682 76798
Sarnano MC 17 3264 80062
Falerone FM 17 3337 83399
Monte Vidon Corrado FM 17 731 84130
Penna San Giovanni MC 18 1108 85238
Macerata MC 19 42473 127711
Camerino MC 19 6974 134685
Castelraimondo MC 19 4587 139272
Gagliole MC 19 620 139892
Corridonia MC 19 15430 155322
Acquacanina MC 20 121 155443
Fiastra MC 20 559 156002

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km SW of Ancona (100861 inhabitants)
54 Km E of Foligno (57155 inhabitants)
68 Km NW of Teramo (54892 inhabitants)
74 Km E of Perugia (166134 inhabitants)
77 Km S of Fano (60888 inhabitants)
86 Km SE of Pesaro (94582 inhabitants)
87 Km NE of Terni (111501 inhabitants)
93 Km N of L'Aquila (69753 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 0.7 2021-08-22
08:44:33
43.185 13.2902 23 2021-08-22
08:55:58
Sala Sismica INGV-Roma 94489311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-22 08:44:33 ± 0.15
Latitude 43.1850 ± 0.0054
Longitude 13.2902 ± 0.0099
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94489311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 702
Semi-minor axis of confidence ellipse (meter) 342
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.42988
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 94489311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-22 08:55:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MC2.EHZ. 2021-08-22T08:44:45.66 0.6 undecidable manual S 195 0.2833 119 0.36 45
IV.MML1.HNZ. 2021-08-22T08:44:44.77 0.6 undecidable manual S 253 0.2428 123 0.49 44
IV.MF5.EHZ. 2021-08-22T08:44:44.29 0.3 undecidable manual S 148 0.2329 125 0.26 70
IV.EL6.EHZ. 2021-08-22T08:44:43.55 0.6 undecidable manual S 317 0.1988 130 0.32 46
IV.FDMO.HHZ. 2021-08-22T08:44:43.37 0.6 undecidable manual S 225 0.2095 128 -0.1 49
IV.CING.HHZ. 2021-08-22T08:44:43.42 0.6 undecidable manual S 340 0.2023 129 0.11 48
IV.AOI.HHE. 2021-08-22T08:44:42.82 0.1 undecidable manual P 32 0.4299 108 0.15 93
IV.CSP1.EHZ. 2021-08-22T08:44:41.52 0.6 undecidable manual S 214 0.1115 147 0.01 50
IV.GUMA.HNZ. 2021-08-22T08:44:41.93 0.6 undecidable manual S 165 0.1268 144 0.18 48
IV.MC2.EHZ. 2021-08-22T08:44:40.30 0.6 negative manual P 195 0.2833 119 -0.06 48
IV.PF6.EHZ. 2021-08-22T08:44:40.77 0.6 undecidable manual S 236 0.0845 155 -0.34 48
IV.CING.HHZ. 2021-08-22T08:44:39.20 0.1 positive manual P 340 0.2023 129 -0.02 98
IV.EL6.EHZ. 2021-08-22T08:44:39.22 0.6 positive manual P 317 0.1988 130 0.05 49
IV.MML1.HNZ. 2021-08-22T08:44:39.81 0.1 undecidable manual P 253 0.2428 123 0.04 98
IV.MF5.EHZ. 2021-08-22T08:44:39.52 0.1 undecidable manual P 148 0.2329 125 -0.11 96
IV.FDMO.HHZ. 2021-08-22T08:44:39.13 0.3 negative manual P 225 0.2095 128 -0.18 72
IV.CSP1.EHZ. 2021-08-22T08:44:38.09 0.1 negative manual P 214 0.1115 147 -0.09 99
IV.GUMA.HNZ. 2021-08-22T08:44:38.34 0.1 undecidable manual P 165 0.1268 144 0.02 100
IV.PF6.EHZ. 2021-08-22T08:44:37.41 0.1 undecidable manual P 236 0.0845 155 -0.54 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.6 1.885E-5 0.12 AML other m 2021-08-22T08:44:43.58
IV.FDMO.HHN. ML:0.6 1.75E-5 0.14 AML other m 2021-08-22T08:44:43.62
IV.CING.HHE. ML:0.6 1.815E-5 0.1 AML other m 2021-08-22T08:44:43.94
IV.CING.HHN. ML:0.5 1.695E-5 1.74 AML other m 2021-08-22T08:44:43.07
IV.CSP1.EHE. ML:1 5.792334E-5 0.2048 AML other m 2021-08-22T08:44:41.69
IV.CSP1.EHN. ML:1 6.8669435E-5 0.224 AML other m 2021-08-22T08:44:41.89
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