Earthquake with magnitude of ML 1.2 on date 28-09-2021 and time 03:23:14 (Italy) in region Montemonaco (AP)

A magnitude ML 1.2 earthquake occured in region: Montemonaco (AP), on

  • 28-09-2021 01:23:14 (UTC)
  • 28-09-2021 03:23:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.901, 13.324 at 15 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
Montemonaco AP 0 604 604
Montefortino FM 5 1178 1782
Montegallo AP 7 523 2305
Amandola FM 9 3629 5934
Comunanza AP 10 3166 9100
Palmiano AP 11 196 9296
Bolognola MC 13 142 9438
Roccafluvione AP 13 2010 11448
Castelsantangelo sul Nera MC 14 281 11729
Venarotta AP 14 2066 13795
Arquata del Tronto AP 14 1178 14973
Montefalcone Appennino FM 15 424 15397
Sarnano MC 15 3264 18661
Smerillo FM 15 365 19026
Force AP 15 1354 20380
Ussita MC 16 444 20824
Acquasanta Terme AP 16 2916 23740
Monte San Martino MC 17 765 24505
Gualdo MC 19 815 25320
Acquacanina MC 19 121 25441
Penna San Giovanni MC 19 1108 26549
Visso MC 19 1107 27656
Santa Vittoria in Matenano FM 20 1330 28986

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Teramo (54892 inhabitants)
51 Km E of Foligno (57155 inhabitants)
61 Km N of L'Aquila (69753 inhabitants)
67 Km NE of Terni (111501 inhabitants)
79 Km E of Perugia (166134 inhabitants)
80 Km NW of Montesilvano (53738 inhabitants)
81 Km S of Ancona (100861 inhabitants)
87 Km NW of Pescara (121014 inhabitants)
92 Km NW of Chieti (51815 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 1.2 2021-09-28
01:23:14
42.9008 13.3235 15 2021-09-28
01:32:06
Sala Sismica INGV-Roma 95969321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-28 01:23:14 ± 0.07
Latitude 42.9008 ± 0.0027
Longitude 13.3235 ± 0.0037
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95969321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 309
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.0027
Epicentral distance of station farthest from the epicenter (degree) 0.48384
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 95969321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-28 01:32:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-09-28T01:23:31.01 0.3 undecidable manual S 339 0.4578 95 0.15 68
IV.CING.HHZ. 2021-09-28T01:23:31.85 0.3 undecidable manual S 349 0.4838 95 0.23 66
IV.CESI.HHZ. 2021-09-28T01:23:27.26 0.3 undecidable manual S 289 0.3238 99 0.35 67
IV.MML1.EHZ. 2021-09-28T01:23:27.32 0.3 undecidable manual S 310 0.3336 98 0.12 70
IV.TERO.HHZ. 2021-09-28T01:23:27.61 0.3 undecidable manual S 143 0.3453 98 0.05 71
IV.MNTT.EHZ. 2021-09-28T01:23:25.37 0.3 undecidable manual S 51 0.2563 102 0.43 66
IV.SMA1.EHZ. 2021-09-28T01:23:25.27 0.3 undecidable manual S 178 0.2707 101 -0.08 71
IV.CING.HHZ. 2021-09-28T01:23:24.14 0.1 undecidable manual P 349 0.4838 95 -0.37 87
IV.FDMO.HHZ. 2021-09-28T01:23:23.63 0.3 undecidable manual S 308 0.2194 106 -0.26 69
IV.CSP1.EHZ. 2021-09-28T01:23:23.33 0.3 undecidable manual S 336 0.2095 107 -0.28 70
IV.EL6.EHZ. 2021-09-28T01:23:23.76 0.1 undecidable manual P 339 0.4578 95 -0.31 88
IV.MTRA.EHZ. 2021-09-28T01:23:22.11 0.3 undecidable manual S 160 0.1538 117 0.04 74
IV.TERO.HHZ. 2021-09-28T01:23:22.09 0.1 undecidable manual P 143 0.3453 98 -0.07 94
IV.GUMA.HHZ. 2021-09-28T01:23:22.22 0.3 undecidable manual S 3 0.1619 115 -0.07 74
IV.NRCA.HHZ. 2021-09-28T01:23:22.68 0.3 undecidable manual S 246 0.1673 114 0.25 71
IV.CESI.HHZ. 2021-09-28T01:23:21.83 0.1 undecidable manual P 289 0.3238 99 0.04 96
IV.MC2.EHZ. 2021-09-28T01:23:21.15 0.3 undecidable manual S 276 0.0989 134 0.4 70
IV.MML1.EHZ. 2021-09-28T01:23:21.90 0.1 undecidable manual P 310 0.3336 98 -0.05 95
IV.MF5.EHZ. 2021-09-28T01:23:21.52 0.3 undecidable manual S 49 0.1322 123 0 74
IV.MNTT.EHZ. 2021-09-28T01:23:20.89 0.1 undecidable manual P 51 0.2563 102 0.24 92
IV.SMA1.EHZ. 2021-09-28T01:23:20.86 0.1 undecidable manual P 178 0.2707 101 -0.03 96
IV.CSP1.EHZ. 2021-09-28T01:23:19.67 0.1 undecidable manual P 336 0.2095 107 -0.21 94
IV.MMO1.EHZ. 2021-09-28T01:23:19.32 0.3 undecidable manual S 121 0.0027 178 -0.25 73
IV.FDMO.HHZ. 2021-09-28T01:23:19.84 0.1 undecidable manual P 308 0.2194 106 -0.2 94
IV.GUMA.HHZ. 2021-09-28T01:23:19.04 0.1 undecidable manual P 3 0.1619 115 -0.08 98
IV.NRCA.HHZ. 2021-09-28T01:23:19.35 0.1 undecidable manual P 246 0.1673 114 0.15 97
IV.MF5.EHZ. 2021-09-28T01:23:18.70 0.1 undecidable manual P 49 0.1322 123 0.02 99
IV.MTRA.EHZ. 2021-09-28T01:23:18.95 0.1 undecidable manual P 160 0.1538 117 -0.04 98
IV.MC2.EHZ. 2021-09-28T01:23:18.44 0.1 undecidable manual P 276 0.0989 134 0.21 97
IV.MMO1.EHZ. 2021-09-28T01:23:17.45 0.1 undecidable manual P 121 0.0027 178 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:1.4 0.000161 0.2 AML other m 2021-09-28T01:23:22.42
IV.NRCA.HHE. ML:1.1 9.385E-5 1.84 AML other m 2021-09-28T01:23:22.94
IV.MTRA.EHN. ML:0.9 5.34E-5 1.4 AML other m 2021-09-28T01:23:23.19
IV.NRCA.HHN. ML:1.4 0.0001625 1.18 AML other m 2021-09-28T01:23:23.94
IV.MTRA.EHE. ML:1 6.36E-5 0.48 AML other m 2021-09-28T01:23:23.40
IV.CSP1.EHN. ML:1.4 0.0001595 0.34 AML other m 2021-09-28T01:23:23.69
IV.CSP1.EHE. ML:1.5 0.0001715 0.42 AML other m 2021-09-28T01:23:23.57
IV.GUMA.HHN. ML:1.1 9.495E-5 1.44 AML other m 2021-09-28T01:23:23.79
IV.FDMO.HHE. ML:1.1 6.355E-5 0.14 AML other m 2021-09-28T01:23:23.96
IV.FDMO.HHN. ML:1.2 9.14E-5 1.7 AML other m 2021-09-28T01:23:24.96
IV.MML1.EHE. ML:1.1 4.34E-5 0.28 AML other m 2021-09-28T01:23:27.79
IV.MML1.EHN. ML:1.3 6.54E-5 0.12 AML other m 2021-09-28T01:23:27.83
IV.CESI.HHE. ML:0.9 2.88E-5 1.58 AML other m 2021-09-28T01:23:27.85
IV.CESI.HHN. ML:1 3.555E-5 0.88 AML other m 2021-09-28T01:23:28.50
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