Earthquake with magnitude of ML 1.1 on date 02-05-2021 and time 15:23:20 (Italy) in region 3 km N Rionero Sannitico (IS)

A magnitude ML 1.1 earthquake occured in region: 3 km N Rionero Sannitico (IS), on

  • 02-05-2021 13:23:20 (UTC)
  • 02-05-2021 15:23:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.742, 14.131 at 12 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
Rionero Sannitico IS 3 1118 1118
Castel di Sangro AQ 5 6538 7656
Montenero Val Cocchiara IS 6 538 8194
Forlì del Sannio IS 7 675 8869
San Pietro Avellana IS 7 503 9372
Scontrone AQ 8 574 9946
Acquaviva d'Isernia IS 8 425 10371
Alfedena AQ 8 864 11235
Roccasicura IS 10 550 11785
Cerro al Volturno IS 10 1281 13066
Castel San Vincenzo IS 11 516 13582
Vastogirardi IS 11 704 14286
Pizzone IS 11 329 14615
Barrea AQ 12 726 15341
Roccaraso AQ 12 1627 16968
Rocchetta a Volturno IS 14 1113 18081
Ateleta AQ 14 1181 19262
Carovilli IS 14 1359 20621
Miranda IS 15 1047 21668
Fornelli IS 15 1909 23577
Capracotta IS 15 903 24480
Castel del Giudice IS 15 346 24826
Scapoli IS 15 680 25506
Rivisondoli AQ 15 700 26206
Civitella Alfedena AQ 16 296 26502
Colli a Volturno IS 16 1349 27851
Villetta Barrea AQ 17 653 28504
Pescocostanzo AQ 17 1128 29632
Pescolanciano IS 19 855 30487
Isernia IS 19 21842 52329
Sant'Angelo del Pesco IS 19 364 52693
Pesche IS 19 1661 54354
Gamberale CH 19 320 54674
Montaquila IS 20 2456 57130
Macchia d'Isernia IS 20 1035 58165

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km S of Chieti (51815 inhabitants)
76 Km N of Caserta (76326 inhabitants)
81 Km S of Pescara (121014 inhabitants)
86 Km N of Aversa (53047 inhabitants)
86 Km S of Montesilvano (53738 inhabitants)
87 Km NW of Benevento (60091 inhabitants)
91 Km N of Giugliano in Campania (122974 inhabitants)
91 Km N of Acerra (59573 inhabitants)
91 Km SE of L'Aquila (69753 inhabitants)
92 Km N of Afragola (65057 inhabitants)
94 Km N of Marano di Napoli (59874 inhabitants)
94 Km N of Casoria (77642 inhabitants)
100 Km N of Pozzuoli (81661 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 1.1 2021-05-02
13:23:20
41.7422 14.1308 12 2021-05-02
13:31:15
Sala Sismica INGV-Roma 89716621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-02 13:23:20 ± 0.18
Latitude 41.7422 ± 0.0090
Longitude 14.1308 ± 0.0193
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 89716621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1654
Semi-minor axis of confidence ellipse (meter) 641
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 1650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.31746
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 89716621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-02 13:31:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.INTR.HHZ. 2021-05-02T13:23:32.33 0.1 undecidable manual S 328 0.3175 92 -0.28 91
IV.LPEL.HHZ. 2021-05-02T13:23:28.00 0.3 undecidable manual P 7 0.3067 92 0.59 65
IV.CERA.HHZ. 2021-05-02T13:23:28.41 0.3 undecidable manual S 210 0.1673 98 0.25 74
IV.MIDA.HHZ. 2021-05-02T13:23:26.98 0.1 undecidable manual S 137 0.1358 106 -0.28 94
IV.INTR.HHZ. 2021-05-02T13:23:26.97 1.0 positive manual P 328 0.3175 92 -0.62 20
IV.RNI2.HHZ. 2021-05-02T13:23:25.43 0.3 undecidable manual S 158 0.0423 152 0.33 74
IV.MIDA.HHZ. 2021-05-02T13:23:24.49 0.1 positive manual P 137 0.1358 106 -0.02 99
IV.CERA.HHZ. 2021-05-02T13:23:24.93 0.3 undecidable manual P 210 0.1673 98 -0.09 72
IV.RNI2.HHZ. 2021-05-02T13:23:23.19 0.1 positive manual P 158 0.0423 152 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HNN. ML:1 0.0001565 1.6 AML other m 2021-05-02T13:23:26.12
IV.RNI2.HHN. ML:1.1 0.0001655 1.08 AML other m 2021-05-02T13:23:26.91
IV.RNI2.HNE. ML:1.1 0.000201 1.18 AML other m 2021-05-02T13:23:26.04
IV.RNI2.HHE. ML:1.1 0.000201 0.84 AML other m 2021-05-02T13:23:27.04
IV.MIDA.HHN. ML:1.1 0.00010445 1 AML other m 2021-05-02T13:23:28.59
IV.MIDA.HHE. ML:1.1 0.0001051 0.44 AML other m 2021-05-02T13:23:28.50
IV.INTR.HHE. ML:1.2 7.205E-5 1.06 AML other m 2021-05-02T13:23:32.14
IV.INTR.HHN. ML:1.4 0.0001021 1.44 AML other m 2021-05-02T13:23:33.14
IV.INTR.HNE. ML:2.2 0.0006255 1.42 AML other m 2021-05-02T13:23:35.88
IV.INTR.HNN. ML:2.2 0.0006695 1.44 AML other m 2021-05-02T13:23:35.94
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