Earthquake with magnitude of ML 1.3 on date 30-09-2021 and time 06:09:27 (UTC) in region 1 km NE Borbona (RI)

A magnitude ML 1.3 earthquake occured in region: 1 km NE Borbona (RI), on

  • 30-09-2021 06:09:27 (UTC)
  • 30-09-2021 08:09:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.522, 13.144 at 11 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
Borbona RI 1 617 617
Posta RI 4 694 1311
Montereale AQ 8 2581 3892
Cagnano Amiterno AQ 10 1369 5261
Micigliano RI 11 127 5388
Cittareale RI 11 482 5870
Antrodoco RI 13 2588 8458
Capitignano AQ 13 665 9123
Barete AQ 14 737 9860
Borgo Velino RI 15 972 10832
Leonessa RI 15 2435 13267
Pizzoli AQ 16 4326 17593
Castel Sant'Angelo RI 17 1308 18901
Amatrice RI 17 2657 21558
Campotosto AQ 19 542 22100
Scoppito AQ 19 3727 25827

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of L'Aquila (69753 inhabitants)
41 Km E of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
86 Km W of Chieti (51815 inhabitants)
88 Km W of Pescara (121014 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
98 Km NE of Velletri (53303 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 1.3 2021-09-30
06:09:27
42.5217 13.1438 11 2021-09-30
06:24:00
Sala Sismica INGV-Roma 96053031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 06:09:27 ± 0.08
Latitude 42.5217 ± 0.0054
Longitude 13.1438 ± 0.0061
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96053031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 640
Semi-minor axis of confidence ellipse (meter) 460
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 640
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31206
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96053031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 06:24:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SARZ.HHZ. 2021-09-30T06:11:29.39 3.0 undecidable manual Sg 19.26 0
GU.MGRO.HHZ. 2021-09-30T06:11:26.42 3.0 undecidable manual Sn 8.9 0
IV.ZEN8.EHZ. 2021-09-30T06:11:14.58 3.0 undecidable manual Sg 11.25 0
OX.CIMO.HHZ. 2021-09-30T06:11:12.86 3.0 undecidable manual Sn 3.28 0
HL.VLS.HHZ. 2021-09-30T06:11:11.74 3.0 undecidable manual Pn 4.65 0
SL.LJU.BHZ. 2021-09-30T06:11:07.07 3.0 undecidable manual Sn 1.81 0
IV.HPAC.HHZ. 2021-09-30T06:11:06.17 3.0 undecidable manual Pg 15.55 0
MN.TRI.HHZ. 2021-09-30T06:11:01.72 3.0 undecidable manual Sg 7.09 0
IV.CAVE.HHZ. 2021-09-30T06:10:52.53 3.0 undecidable manual Sg 7.72 0
IV.MSRU.HHZ. 2021-09-30T06:10:42.77 3.0 positive manual Pg 10.9 0
IV.ICAI.EHZ. 2021-09-30T06:10:27.17 3.0 undecidable manual Sg 9.94 0
GU.EQUI.HHZ. 2021-09-30T06:10:19.89 3.0 positive manual Pg 11.29 0
IV.TDS.HHZ. 2021-09-30T06:10:19.68 3.0 negative manual Pn -0.26 0
MN.TRI.HHZ. 2021-09-30T06:10:18.18 3.0 negative manual Pn 2.76 0
IV.TST02.HHZ. 2021-09-30T06:09:57.83 3.0 undecidable manual S -0.02 0
IV.LPEL.HHZ. 2021-09-30T06:09:52.80 3.0 undecidable manual S -1.11 0
IV.PP3.EHZ. 2021-09-30T06:09:42.76 3.0 positive manual P -1 0
IV.NRCA.HHZ. 2021-09-30T06:09:38.91 0.6 undecidable manual S 356 0.3121 50 0.01 48
IV.SMA1.EHZ. 2021-09-30T06:09:35.02 0.6 undecidable manual S 52 0.1781 50 0.1 48
IV.NRCA.HHZ. 2021-09-30T06:09:33.78 0.1 undecidable manual P 356 0.3121 50 -0.17 93
IV.ARRO.EHZ. 2021-09-30T06:09:33.32 0.6 undecidable manual P 282 0.2842 50 -0.14 47
IV.RM33.EHZ. 2021-09-30T06:09:31.52 0.6 undecidable manual S 104 0.054 152 -0.03 50
IV.SMA1.EHZ. 2021-09-30T06:09:31.61 0.1 positive manual P 52 0.1781 50 -0.04 98
IV.LNSS.HHZ. 2021-09-30T06:09:30.70 0.1 negative manual P 317 0.1115 132 0.19 96
IV.RM33.EHZ. 2021-09-30T06:09:29.74 0.1 undecidable manual P 104 0.054 152 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNN. ML:1.4 0.0003875 0.26 AML other m 2021-09-30T06:09:31.69
IV.RM33.EHN. ML:1.4 0.000378 0.24 AML other m 2021-09-30T06:09:31.70
IV.RM33.HNE. ML:1.6 0.0006145 0.8 AML other m 2021-09-30T06:09:31.86
IV.RM33.EHE. ML:1.6 0.000613 0.78 AML other m 2021-09-30T06:09:31.86
IV.LNSS.HHE. ML:1.1 0.0001327 0.86 AML other m 2021-09-30T06:09:33.99
IV.LNSS.HHN. ML:1.1 0.00012575 0.52 AML other m 2021-09-30T06:09:34.28
IV.SMA1.EHN. ML:1 7.665E-5 0.34 AML other m 2021-09-30T06:09:35.47
IV.SMA1.EHE. ML:1.3 0.0001355 0.54 AML other m 2021-09-30T06:09:35.33
IV.NRCA.HHE. ML:1.3 8.49E-5 0.44 AML other m 2021-09-30T06:09:39.28
IV.NRCA.HHN. ML:1.2 6.255E-5 0.14 AML other m 2021-09-30T06:09:39.41
IV.TST02.HHE. ML:2.4 0.0001805 0.32 AML other m 2021-09-30T06:10:05.16
IV.TST02.HHN. ML:2.1 9.865E-5 1.56 AML other m 2021-09-30T06:10:10.19
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