Earthquake with magnitude of ML 1.9 on date 19-09-2021 and time 22:02:28 (Italy) in region Costa Siracusana (Siracusa)

A magnitude ML 1.9 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 19-09-2021 20:02:28 (UTC)
  • 19-09-2021 22:02:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.056, 15.313 at 24 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
Siracusa SR 2 122291 122291
Floridia SR 15 22762 145053
Priolo Gargallo SR 16 12091 157144
Solarino SR 18 8091 165235

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km E of Siracusa (122291 inhabitants)
54 Km E of Ragusa (73313 inhabitants)
54 Km E of Modica (54633 inhabitants)
54 Km SE of Catania (314555 inhabitants)
63 Km S of Acireale (52622 inhabitants)
70 Km E of Vittoria (63339 inhabitants)
94 Km E of Gela (75827 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2021-09-19
20:02:28
37.0557 15.3132 24 2021-09-19
20:10:15
Sala Sismica INGV-Roma 95640871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 20:02:28 ± 0.14
Latitude 37.0557 ± 0.0054
Longitude 15.3132 ± 0.0135
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95640871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1163
Semi-minor axis of confidence ellipse (meter) 368
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 1160
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 228
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
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
Epicentral distance of station farthest from the epicenter (degree) 0.70237
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 95640871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 20:10:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EPOZ.HHZ. 2021-09-19T20:02:49.43 3.0 undecidable manual S 0.05 0
IV.ISPIC.EHZ. 2021-09-19T20:02:44.10 0.6 undecidable manual S 230 0.4281 110 0.25 46
IV.HPAC.HHZ. 2021-09-19T20:02:43.91 0.6 undecidable manual S 213 0.411 111 0.52 43
IV.EMFO.HHZ. 2021-09-19T20:02:42.05 0.1 undecidable manual P 345 0.7024 101 0.31 84
IV.ESLN.HHZ. 2021-09-19T20:02:41.56 0.1 undecidable manual P 337 0.6916 101 0 90
IV.HCRL.HHZ. 2021-09-19T20:02:41.28 0.6 undecidable manual S 316 0.3184 117 0.4 45
IV.ESPC.HHZ. 2021-09-19T20:02:41.24 0.1 undecidable manual P 340 0.6754 102 -0.05 90
IV.HVIT.HHZ. 2021-09-19T20:02:40.30 0.1 undecidable manual P 265 0.6349 103 -0.31 85
IV.HAGA.HHZ. 2021-09-19T20:02:39.51 0.6 undecidable manual S 331 0.2617 123 0.09 48
IV.HVZN.HHZ. 2021-09-19T20:02:38.50 0.1 undecidable manual P 285 0.4919 107 0.26 89
IV.SSY.HHZ. 2021-09-19T20:02:38.18 0.6 undecidable manual S 298 0.2167 129 -0.16 48
IV.HLNI.HHZ. 2021-09-19T20:02:37.43 0.1 negative manual P 310 0.4569 108 -0.24 90
IV.HAVL.HHZ. 2021-09-19T20:02:37.70 0.6 undecidable manual S 238 0.1799 135 0.16 49
IV.ISPIC.EHZ. 2021-09-19T20:02:36.98 0.1 undecidable manual P 230 0.4281 110 -0.22 91
IV.HPAC.HHZ. 2021-09-19T20:02:36.97 0.3 positive manual P 213 0.411 111 0.04 71
IV.HSRS.HHZ. 2021-09-19T20:02:35.76 0.6 undecidable manual S 297 0.0818 157 -0.13 50
IV.HCRL.HHZ. 2021-09-19T20:02:35.48 0.1 undecidable manual P 316 0.3184 117 -0.01 97
IV.SSY.HHZ. 2021-09-19T20:02:34.05 0.1 negative manual P 298 0.2167 129 0.03 99
IV.HAGA.HHZ. 2021-09-19T20:02:34.44 0.6 undecidable manual P 331 0.2617 123 -0.2 47
IV.HAVL.HHZ. 2021-09-19T20:02:33.53 0.1 undecidable manual P 238 0.1799 135 -0.03 99
IV.HSRS.HHZ. 2021-09-19T20:02:32.50 0.1 undecidable manual P 297 0.0818 157 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HSRS.HHN. ML:1.5 0.00019289628965 0.128 AML other m 2021-09-19T20:02:36.14
IV.HSRS.HHE. ML:1.7 0.0003052305 0.128 AML other m 2021-09-19T20:02:36.04
IV.HAVL.HHE. ML:2.3 0.0009745 0.08 AML other m 2021-09-19T20:02:37.99
IV.HAVL.HHN. ML:2.4 0.0012187785 0.0768 AML other m 2021-09-19T20:02:37.98
IV.SSY.HHN. ML:2.6 0.0018824025 0.1024 AML other m 2021-09-19T20:02:39.97
IV.SSY.HHE. ML:2.4 0.00110572185 0.1408 AML other m 2021-09-19T20:02:39.09
IV.HCRL.HHE. ML:1.9 0.000244 0.1 AML other m 2021-09-19T20:02:41.50
IV.HCRL.HHN. ML:1.6 0.0001465 0.48 AML other m 2021-09-19T20:02:43.27
IV.HLNI.HHE. ML:1.8 0.000143377815 0.1024 AML other m 2021-09-19T20:02:45.11
IV.HLNI.HHN. ML:1.8 0.00013891325 0.1024 AML other m 2021-09-19T20:02:45.47
IV.HVZN.HHE. ML:1.8 0.0001523236 0.3328 AML other m 2021-09-19T20:02:49.20
IV.HVZN.HHN. ML:2.2 0.0003474306 0.2816 AML other m 2021-09-19T20:02:48.87
IV.HVIT.HHN. ML:1.9 0.000121027695 0.0512 AML other m 2021-09-19T20:02:52.13
IV.HVIT.HHE. ML:1.9 0.000120616085 0.1024 AML other m 2021-09-19T20:02:50.97
IV.HAGA.HHE. ML:1.4 9.964972E-5 0.1152 AML other m 2021-09-19T20:02:39.74
IV.HAGA.HHN. ML:1.6 0.00016974695 0.1664 AML other m 2021-09-19T20:02:39.71
IV.HPAC.HHE. ML:2.2 0.00036761105 0.2432 AML other m 2021-09-19T20:02:44.15
IV.ISPIC.EHE. ML:1.7 0.0001147775 0.1536 AML other m 2021-09-19T20:02:44.15
IV.ISPIC.EHN. ML:1.6 9.392957E-5 0.1024 AML other m 2021-09-19T20:02:44.11
IV.HVZN.HNE. ML:1.8 0.0001503048 0.32 AML other m 2021-09-19T20:02:49.21
IV.HVZN.HNN. ML:2.2 0.00032350755 0.256 AML other m 2021-09-19T20:02:48.88
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