Earthquake with magnitude of ML 1.1 on date 31-12-2021 and time 21:24:48 (UTC) in region 3 km W Montaquila (IS)
A magnitude ML 1.1 earthquake occured in region: 3 km W Montaquila (IS), on
- 31-12-2021 21:24:48 (UTC)
- 31-12-2021 22:24:48 (UTC +01:00) Italian time
and geographic coordinates (lat, lon) 41.5640, 14.0850 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.
Display location by
GeoHack
GoogleMap
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Municipalities within 20 km from the epicenter
Distances are determinated based on the geographic coordintes of the (Istat).
| Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
|---|---|---|---|---|
| Montaquila | IS | 3 | 2456 | 2456 |
| Filignano | IS | 3 | 648 | 3104 |
| Colli a Volturno | IS | 4 | 1349 | 4453 |
| Pozzilli | IS | 6 | 2380 | 6833 |
| Scapoli | IS | 6 | 680 | 7513 |
| Fornelli | IS | 7 | 1909 | 9422 |
| Rocchetta a Volturno | IS | 7 | 1113 | 10535 |
| Macchia d'Isernia | IS | 7 | 1035 | 11570 |
| Monteroduni | IS | 9 | 2264 | 13834 |
| Venafro | IS | 9 | 11280 | 25114 |
| Conca Casale | IS | 10 | 200 | 25314 |
| Cerro al Volturno | IS | 10 | 1281 | 26595 |
| Castel San Vincenzo | IS | 10 | 516 | 27111 |
| Viticuso | FR | 11 | 353 | 27464 |
| Acquafondata | FR | 11 | 263 | 27727 |
| Sant'Agapito | IS | 12 | 1496 | 29223 |
| Capriati a Volturno | CE | 12 | 1541 | 30764 |
| Isernia | IS | 12 | 21842 | 52606 |
| Pizzone | IS | 12 | 329 | 52935 |
| Acquaviva d'Isernia | IS | 13 | 425 | 53360 |
| Ciorlano | CE | 14 | 426 | 53786 |
| San Biagio Saracinisco | FR | 14 | 349 | 54135 |
| Longano | IS | 14 | 690 | 54825 |
| Vallerotonda | FR | 14 | 1581 | 56406 |
| Fontegreca | CE | 15 | 811 | 57217 |
| Sesto Campano | IS | 16 | 2388 | 59605 |
| Gallo Matese | CE | 16 | 579 | 60184 |
| Pettoranello del Molise | IS | 16 | 460 | 60644 |
| Miranda | IS | 16 | 1047 | 61691 |
| San Vittore del Lazio | FR | 17 | 2636 | 64327 |
| Forlì del Sannio | IS | 17 | 675 | 65002 |
| San Pietro Infine | CE | 17 | 944 | 65946 |
| Montenero Val Cocchiara | IS | 17 | 538 | 66484 |
| Pesche | IS | 17 | 1661 | 68145 |
| Rionero Sannitico | IS | 17 | 1118 | 69263 |
| Cervaro | FR | 18 | 8109 | 77372 |
| Prata Sannita | CE | 18 | 1502 | 78874 |
| Castelpizzuto | IS | 18 | 155 | 79029 |
| Sant'Elia Fiumerapido | FR | 18 | 6166 | 85195 |
| Letino | CE | 19 | 712 | 85907 |
| Mignano Monte Lungo | CE | 19 | 3250 | 89157 |
| Pratella | CE | 19 | 1565 | 90722 |
| Roccasicura | IS | 19 | 550 | 91272 |
| Alfedena | AQ | 19 | 864 | 92136 |
Municipalities with at least 50000 inhabitants
An earthquake occurred to
58 Km NW of Caserta (76326 inhabitants)
66 Km N of Aversa (53047 inhabitants)
71 Km N of Giugliano in Campania (122974 inhabitants)
73 Km NW of Acerra (59573 inhabitants)
74 Km N of Afragola (65057 inhabitants)
75 Km N of Marano di Napoli (59874 inhabitants)
75 Km N of Casoria (77642 inhabitants)
76 Km NW of Benevento (60091 inhabitants)
80 Km N of Pozzuoli (81661 inhabitants)
82 Km N of Napoli (974074 inhabitants)
85 Km N of Portici (55274 inhabitants)
87 Km N of Ercolano (53709 inhabitants)
88 Km S of Chieti (51815 inhabitants)
90 Km N of Torre del Greco (86275 inhabitants)
94 Km NW of Avellino (54857 inhabitants)
98 Km NW of Scafati (50787 inhabitants)
99 Km E of Latina (125985 inhabitants)
Recent and historical seismicity
Not available maps for this sismic event.
Seismic hazard
Not available maps for this sismic event.
Shakemap
Not available maps for this sismic event.
Felt maps
Not available maps for this sismic event.
Locations history
| Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
|---|---|---|---|---|---|---|---|---|
|
Reviewed Rev100 |
ML 1.1 | 2021-12-31 21:24:48 |
41.5645 | 14.0852 | 11 | 2021-12-31 21:30:49 |
Sala Sismica INGV-Roma | 99206591 |
Preferred location and magnitude until now.
Origin information
Origin
| Field | Value |
|---|---|
| Time (UTC) | 2021-12-31 21:24:48 ± 0.16 |
| Latitude | 41.5645 ± 0.0099 |
| Longitude | 14.0852 ± 0.0120 |
| Depth (km) | 11 ± 1 (from location) |
| Evaluation mode of Origin | manual |
| Evaluation status of Origin | reviewed |
| Version | 100 -> SURVEY-INGV |
| Event type | earthquake |
| Origin ID | 99206591 |
Uncertainty
| Field | Value |
|---|---|
| Preferred uncertainty description | uncertainty ellipse |
| Semi-major axis of confidence ellipse (meter) | 1024 |
| Semi-minor axis of confidence ellipse (meter) | 971 |
| Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 42 |
| Circular confidence region, given by single value of horizontal uncertainty (meter) | 1020.0 |
| Confidence level of the uncertainty (%) | 68 |
Quality
| Field | Value |
|---|---|
| Largest azimuthal gap in station distribution as seen from epicenter (degree) | 156 |
| Number of associated phases, regardless of their use for origin computation | 11 |
| Number of defining phases | 9 |
| RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.3 |
| Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
| Epicentral distance of station farthest from the epicenter (degree) | 0.31746 |
| Number of stations at which the event was observed | 7 |
| Number of stations from which data was used for origin computation | 5 |
Magnitude information
ML:1.1
| Field | Value |
|---|---|
| Value | 1.1 |
| Uncertainty | 0.7 |
| Num. used stations | 8 |
| Type of magnitude | ML |
| Reference to an origin | 99206591 |
| Agency | INGV |
| Autore | Sala Sismica INGV-Roma |
| Time of creation (UTC) | 2021-12-31 21:30:49 |
Picking and Arrival
| SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| OT.OT17.EHZ. | 2021-12-31T21:25:10.21 | 3.0 | negative | manual | P | 2.02 | 0 | |||
| IX.RSF3.HHZ.02 | 2021-12-31T21:25:09.25 | 3.0 | positive | manual | P | -0.1 | 0 | |||
| IV.POFI.HHN. | 2021-12-31T21:25:00.96 | 0.6 | undecidable | manual | S | 299 | 35.2425 | 50 | 0.43 | 45 |
| IV.MIDA.HHZ. | 2021-12-31T21:24:55.30 | 0.6 | undecidable | manual | S | 58 | 16.4724 | 123 | -0.04 | 50 |
| IV.POFI.HHN. | 2021-12-31T21:24:55.16 | 0.1 | undecidable | manual | P | 299 | 35.2425 | 50 | -0.32 | 92 |
| IV.RNI2.HHZ. | 2021-12-31T21:24:54.85 | 0.6 | undecidable | manual | S | 20 | 16.3725 | 123 | -0.47 | 46 |
| IV.VAGA.HHZ. | 2021-12-31T21:24:53.17 | 0.1 | undecidable | manual | P | 143 | 20.6682 | 117 | -0.04 | 100 |
| IV.CERA.HHZ. | 2021-12-31T21:24:53.15 | 0.6 | undecidable | manual | S | 304 | 6.6933 | 148 | 0.25 | 49 |
| IV.MIDA.HHZ. | 2021-12-31T21:24:52.67 | 0.1 | positive | manual | P | 58 | 16.4724 | 123 | 0.2 | 97 |
| IV.RNI2.HHZ. | 2021-12-31T21:24:52.93 | 0.6 | undecidable | manual | P | 20 | 16.3725 | 123 | 0.47 | 46 |
| IV.CERA.HHZ. | 2021-12-31T21:24:50.90 | 0.1 | undecidable | manual | P | 304 | 6.6933 | 148 | -0.16 | 100 |
Station Magnitude and Amplitude
| SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
|---|---|---|---|---|---|---|---|
| IV.CERA.HHE. | ML:0.0 | 0.0011355 | 0.24 | AML | other | m | 2021-12-31T21:24:53.01 |
| IV.CERA.HNE. | ML:0.0 | 0.0010985 | 0.26 | AML | other | m | 2021-12-31T21:24:53.01 |
| IV.CERA.HHN. | ML:0.0 | 0.0006950000000000001 | 0.18 | AML | other | m | 2021-12-31T21:24:53.22 |
| IV.CERA.HNN. | ML:0.0 | 0.0006670000000000001 | 0.2 | AML | other | m | 2021-12-31T21:24:53.22 |
| IV.MIDA.HHE. | ML:0.4 | 0.000018139780500000002 | 1.2288 | AML | other | m | 2021-12-31T21:24:55.85 |
| IV.MIDA.HHN. | ML:0.5 | 0.00002685632 | 0.1152 | AML | other | m | 2021-12-31T21:24:55.78 |
| IV.RNI2.HHN. | ML:0.5 | 0.00003120784 | 1.5744 | AML | other | m | 2021-12-31T21:24:55.57 |
| IV.RNI2.HNE. | ML:0.7 | 0.000045775675 | 1.408 | AML | other | m | 2021-12-31T21:24:54.71 |
TDMT - Time Domain Moment Tensor
Not available TDMT solution for this seismic event.
Fault Plane solutions in the area
Not available maps for this sismic event.