Earthquake with magnitude of ML 1.7 on date 31-10-2021 and time 02:37:10 (UTC) in region 8 km N Monte Sant'Angelo (FG)

A magnitude ML 1.7 earthquake occured in region: 8 km N Monte Sant'Angelo (FG), on

  • 31-10-2021 02:37:10 (UTC)
  • 31-10-2021 03:37:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7800, 15.9320 at 24 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 8 12657 12657
Carpino FG 10 4182 16839
Mattinata FG 13 6310 23149
Vico del Gargano FG 13 7766 30915
Ischitella FG 14 4432 35347
Cagnano Varano FG 14 7330 42677
Manfredonia FG 17 57279 99956
Rodi Garganico FG 17 3693 103649
San Giovanni Rotondo FG 19 27184 130833
Peschici FG 20 4521 135354

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Manfredonia (57279 inhabitants)
47 Km E of San Severo (53905 inhabitants)
48 Km NE of Foggia (151991 inhabitants)
57 Km N of Cerignola (58396 inhabitants)
59 Km NW of Barletta (94814 inhabitants)
69 Km NW of Andria (100440 inhabitants)
69 Km NW of Trani (56217 inhabitants)
76 Km NW of Bisceglie (55422 inhabitants)
85 Km NW of Molfetta (59874 inhabitants)
98 Km NW of Bitonto (55540 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.7 2021-10-31
02:37:10
41.7802 15.9325 24 2022-03-30
13:04:30
Bollettino Sismico Italiano INGV 99780741
Reviewed
Rev100
ML 2.0 2021-10-31
02:37:10
41.7742 15.9413 26 2021-10-31
15:09:25
Sala Sismica INGV-Roma 97113411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-31 02:37:10 ± 0.09
Latitude 41.7802 ± 0.0036
Longitude 15.9325 ± 0.0036
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99780741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 24
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
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) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.97666
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 99780741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-14 15:16:21

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97113411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-31 15:09:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT15.EHZ. 2021-10-31T02:37:42.54 0.3 undecidable manual S 133 108.4137 98 0.58 58
IV.MRVN.HHZ. 2021-10-31T02:37:35.18 0.3 undecidable manual S 165 82.7505 100 -0.01 67
OT.OT16.EHZ. 2021-10-31T02:37:30.37 0.3 undecidable manual S 276 63.2922 104 0.26 66
OT.OT15.EHZ. 2021-10-31T02:37:29.04 0.6 undecidable manual P 133 108.4137 98 0.44 40
IV.TREM.HHE. 2021-10-31T02:37:27.08 0.3 undecidable manual S 318 51.6039 108 -0.02 72
IV.MRVN.HHZ. 2021-10-31T02:37:24.25 0.3 undecidable manual P 165 82.7505 100 -0.44 61
IV.APRC.HHZ. 2021-10-31T02:37:22.37 0.3 undecidable manual S 266 32.3454 119 0 74
OT.OT05.EHZ. 2021-10-31T02:37:21.58 0.3 undecidable manual S 244 30.4473 121 -0.35 70
OT.OT06.EHZ. 2021-10-31T02:37:21.78 0.3 undecidable manual S 250 29.8479 122 -0.03 75
OT.OT04.EHZ. 2021-10-31T02:37:21.71 0.3 undecidable manual S 257 29.8479 122 -0.1 74
OT.OT16.EHZ. 2021-10-31T02:37:21.63 0.3 undecidable manual P 276 63.2922 104 -0.13 69
OT.OT03.EHE. 2021-10-31T02:37:20.65 0.3 undecidable manual S 252 24.5532 128 0 75
OT.OT13.EHN. 2021-10-31T02:37:20.07 0.3 undecidable manual S 61 23.2545 130 -0.3 70
OT.OT07.EHZ. 2021-10-31T02:37:20.51 0.3 undecidable manual S 225 24.9528 128 -0.21 73
IV.SGRT.HHN. 2021-10-31T02:37:19.25 0.3 undecidable manual S 260 15.873 142 0.26 72
IV.TREM.HHE. 2021-10-31T02:37:19.87 0.3 undecidable manual P 318 51.6039 108 -0.15 70
OT.OT12.EHZ. 2021-10-31T02:37:19.05 0.3 undecidable manual S 187 16.5723 141 -0.06 76
OT.OT14.EHZ. 2021-10-31T02:37:18.57 0.3 undecidable manual S 351 13.0758 147 0.01 77
IV.MSAG.HHN. 2021-10-31T02:37:18.11 0.3 undecidable manual S 194 7.7811 160 0.18 75
IV.APRC.HHZ. 2021-10-31T02:37:17.36 0.1 undecidable manual P 266 32.3454 119 0.08 98
OT.OT07.EHZ. 2021-10-31T02:37:16.26 0.1 positive manual P 225 24.9528 128 -0.08 99
OT.OT04.EHZ. 2021-10-31T02:37:16.98 0.1 negative manual P 257 29.8479 122 0.02 99
OT.OT03.EHE. 2021-10-31T02:37:16.39 0.1 undecidable manual P 252 24.5532 128 0.1 99
OT.OT05.EHZ. 2021-10-31T02:37:16.77 0.1 undecidable manual P 244 30.4473 121 -0.27 95
OT.OT06.EHZ. 2021-10-31T02:37:16.94 0.3 undecidable manual P 250 29.8479 122 -0.02 75
OT.OT12.EHZ. 2021-10-31T02:37:15.30 0.1 positive manual P 187 16.5723 141 -0.11 100
OT.OT14.EHZ. 2021-10-31T02:37:15.28 0.1 undecidable manual P 351 13.0758 147 0.19 99
IV.SGRT.HHN. 2021-10-31T02:37:15.59 0.1 positive manual P 260 15.873 142 0.25 97
OT.OT13.EHN. 2021-10-31T02:37:15.92 0.1 undecidable manual P 61 23.2545 130 -0.21 95
IV.MSAG.HHN. 2021-10-31T02:37:14.91 0.1 positive manual P 194 7.7811 160 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGRT.HHN. ML:2.1 0.0007578996 0.1008 AML other m 2021-10-31T02:37:19.39
IV.SGRT.HHE. ML:2.0 0.000585584 0.1392 AML other m 2021-10-31T02:37:19.41
OT.OT13.EHN. ML:1.7 0.00024733204999999997 0.0784 AML other m 2021-10-31T02:37:20.45
OT.OT13.EHE. ML:1.6 0.00017883325 0.16 AML other m 2021-10-31T02:37:20.83
IV.APRC.HHN. ML:1.8 0.000230833 0.12 AML other m 2021-10-31T02:37:22.83
IV.APRC.HHE. ML:1.9 0.00027569085 0.0992 AML other m 2021-10-31T02:37:22.99
OT.OT05.EHN. ML:1.4 0.000092835235 0.08 AML other m 2021-10-31T02:37:21.96
IV.APRC.HNE. ML:1.9 0.00027509685000000003 0.1104 AML other m 2021-10-31T02:37:23.04
OT.OT16.EHN. ML:1.6 0.000062567575 0.1808 AML other m 2021-10-31T02:37:31.03
OT.OT16.EHE. ML:1.3 0.000034019666499999994 0.2384 AML other m 2021-10-31T02:37:33.41
IV.MRVN.HHE. ML:1.1 0.000015509746 0.1792 AML other m 2021-10-31T02:37:36.67
IV.MRVN.HHN. ML:1.1 0.000014801703499999999 0.1184 AML other m 2021-10-31T02:37:37.80
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
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