Earthquake with magnitude of ML 1.4 on date 22-09-2021 and time 10:05:53 (Italy) in region 9 km N Monte Sant'Angelo (FG)

A magnitude ML 1.4 earthquake occured in region: 9 km N Monte Sant'Angelo (FG), on

  • 22-09-2021 08:05:53 (UTC)
  • 22-09-2021 10:05:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.783, 15.943 at 22 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
Monte Sant'Angelo FG 9 12657 12657
Carpino FG 10 4182 16839
Mattinata FG 12 6310 23149
Vico del Gargano FG 13 7766 30915
Ischitella FG 14 4432 35347
Cagnano Varano FG 15 7330 42677
Rodi Garganico FG 17 3693 46370
Manfredonia FG 17 57279 103649
Peschici FG 19 4521 108170
San Giovanni Rotondo FG 20 27184 135354

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Manfredonia (57279 inhabitants)
48 Km E of San Severo (53905 inhabitants)
49 Km NE of Foggia (151991 inhabitants)
58 Km N of Cerignola (58396 inhabitants)
59 Km NW of Barletta (94814 inhabitants)
68 Km NW of Andria (100440 inhabitants)
69 Km NW of Trani (56217 inhabitants)
76 Km NW of Bisceglie (55422 inhabitants)
84 Km NW of Molfetta (59874 inhabitants)
98 Km NW of Bitonto (55540 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 1.4 2021-09-22
08:05:53
41.7828 15.9433 22 2021-09-22
08:17:29
Sala Sismica INGV-Roma 95728511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 08:05:53 ± 0.16
Latitude 41.7828 ± 0.0063
Longitude 15.9433 ± 0.0084
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95728511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 873
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 321
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
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
Epicentral distance of station farthest from the epicenter (degree) 0.29947
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 95728511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 08:17:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AMUR.HHZ. 2021-09-22T08:06:27.35 3.0 undecidable manual S 0.07 0
OT.OT05.EHZ. 2021-09-22T08:06:04.69 0.3 undecidable manual S 244 0.2824 118 -0.41 67
OT.OT13.EHZ. 2021-09-22T08:06:02.78 0.3 undecidable manual S 61 0.2014 129 -0.3 70
OT.OT14.EHZ. 2021-09-22T08:06:01.17 0.3 undecidable manual S 347 0.1169 146 -0.21 73
OT.OT12.EHZ. 2021-09-22T08:06:01.94 0.3 undecidable manual S 190 0.1538 138 -0.11 73
IV.SGRT.HHZ. 2021-09-22T08:06:01.94 0.3 undecidable manual S 259 0.1511 138 -0.07 75
IV.APRC.HHZ. 2021-09-22T08:06:00.60 0.1 positive manual P 265 0.2995 116 0.16 94
IV.MSAG.HHZ. 2021-09-22T08:06:00.88 0.3 undecidable manual S 200 0.0755 157 0.1 75
OT.OT05.EHZ. 2021-09-22T08:06:00.04 0.1 undecidable manual P 244 0.2824 118 -0.15 95
OT.OT13.EHZ. 2021-09-22T08:05:59.02 0.1 undecidable manual P 61 0.2014 129 0 99
OT.OT12.EHZ. 2021-09-22T08:05:58.56 0.1 undecidable manual P 190 0.1538 138 0.14 98
IV.SGRT.HHZ. 2021-09-22T08:05:58.66 0.1 undecidable manual P 259 0.1511 138 0.26 95
OT.OT14.EHZ. 2021-09-22T08:05:58.07 0.1 undecidable manual P 347 0.1169 146 0.04 100
IV.MSAG.HHZ. 2021-09-22T08:05:57.90 0.1 undecidable manual P 200 0.0755 157 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT12.EHE. ML:1.3 0.0001155 1.76 AML other m 2021-09-22T08:06:01.10
OT.OT12.EHN. ML:1.2 9.93E-5 0.28 AML other m 2021-09-22T08:06:03.15
OT.OT13.EHE. ML:1.8 0.0003055 0.2 AML other m 2021-09-22T08:06:03.90
OT.OT13.EHN. ML:1.9 0.000412 1.04 AML other m 2021-09-22T08:06:04.03
IV.APRC.HHE. ML:1.8 0.00025 0.86 AML other m 2021-09-22T08:06:05.27
IV.APRC.HHN. ML:1.8 0.0002495 0.42 AML other m 2021-09-22T08:06:05.62
IV.MSAG.HHE. ML:0.9 5.417011E-5 0.16 AML other m 2021-09-22T08:06:01.92
IV.MSAG.HHN. ML:1.2 0.000117322005 0.096 AML other m 2021-09-22T08:06:01.63
IV.MSAG.HNE. ML:1.3 0.00013699875 0.16 AML other m 2021-09-22T08:06:01.92
IV.MSAG.HNN. ML:1.6 0.0002614627 0.1152 AML other m 2021-09-22T08:06:01.64
IV.SGRT.HHE. ML:1.2 0.000101953595 0.1984 AML other m 2021-09-22T08:06:03.25
IV.SGRT.HHN. ML:1.2 8.518475E-5 0.1024 AML other m 2021-09-22T08:06:03.24
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