Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.7 on date 26-09-1994 and time 23:48:30 (Italy) in region 7 km N Nicolosi (CT)

A magnitude Md 2.7 earthquake occured in region: 7 km N Nicolosi (CT), on

  • 26-09-1994 22:48:30 (UTC)
  • 26-09-1994 23:48:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6740, 15.0050 at 4 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Nicolosi CT 7 7463 7463
Ragalna CT 8 3924 11387
Pedara CT 8 14102 25489
Zafferana Etnea CT 9 9517 35006
Trecastagni CT 9 10910 45916
Belpasso CT 9 28108 74024
Viagrande CT 11 8563 82587
Milo CT 11 1087 83674
San Pietro Clarenza CT 11 7743 91417
Camporotondo Etneo CT 12 5023 96440
Santa Venerina CT 12 8592 105032
Mascalucia CT 12 31958 136990
Santa Maria di Licodia CT 12 7641 144631
Tremestieri Etneo CT 12 20589 165220
Biancavilla CT 12 24007 189227
Aci Bonaccorsi CT 12 3524 192751
Aci Sant'Antonio CT 13 17984 210735
San Giovanni la Punta CT 13 23060 233795
Gravina di Catania CT 14 25838 259633
Paternò CT 14 48228 307861
Aci Catena CT 14 29851 337712
Sant'Agata li Battiati CT 14 9479 347191
Sant'Alfio CT 15 1582 348773
Valverde CT 15 7840 356613
San Gregorio di Catania CT 15 11966 368579
Adrano CT 15 36122 404701
Acireale CT 16 52622 457323
Misterbianco CT 17 49410 506733
Giarre CT 17 27659 534392
Aci Castello CT 18 18723 553115
Motta Sant'Anastasia CT 18 12116 565231
Riposto CT 19 14838 580069
Mascali CT 19 14282 594351
Bronte CT 20 19172 613523

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Acireale (52622 inhabitants)
20 Km NW of Catania (314555 inhabitants)
73 Km NW of Siracusa (122291 inhabitants)
74 Km SW of Reggio di Calabria (183035 inhabitants)
76 Km SW of Messina (238439 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
87 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
93 Km N of Modica (54633 inhabitants)
95 Km NE of Gela (75827 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 2.7
ML-VAX 1.9 		1994-09-26
22:48:30		 37.674 15.005 4 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 217139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-09-26 22:48:30 ± 0.224
Latitude 37.6740 ± 0.0079
Longitude 15.0050 ± 0.0127
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 217139

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1425.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00316
Epicentral distance of station farthest from the epicenter (degree) 0.02242
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 12
Type of magnitude Md
Reference to an origin 217139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:24:56

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 9
Type of magnitude ML
Reference to an origin 217139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CZI.Z. 1994-09-26T22:49:24.70 10.0 undecidable manual SN 29 1.7649 -0.59 0.2
--.MGR.Z. 1994-09-26T22:49:10.92 10.0 undecidable manual PN 9 2.4864 -1.3 0.1
--.ROI.Z. 1994-09-26T22:49:09.14 10.0 undecidable manual PN 32 2.2422 0.27 0.7
--.SOI.Z. 1994-09-26T22:49:03.16 10.0 undecidable manual SG 63 0.9213 -0.34 0.5
--.GIB.Z. 1994-09-26T22:49:02.24 10.0 undecidable manual SG 292 0.8214 1.5 0
--.CZI.Z. 1994-09-26T22:49:01.26 10.0 undecidable manual PN 29 1.7649 -1.08 0.2
--.GRI.Z. 1994-09-26T22:49:01.60 10.0 undecidable manual PN 43 1.5873 1.22 0.1
--.GMB.Z. 1994-09-26T22:49:00.51 10.0 undecidable manual SG 52 0.8103 0.34 0.5
--.PL9.Z. 1994-09-26T22:48:58.97 10.0 undecidable manual SG 295 0.7437 0.91 0.2
--.MO9.Z. 1994-09-26T22:48:55.60 10.0 undecidable manual SG 58 0.6327 1.23 0.1
--.FAI.Z. 1994-09-26T22:48:53.77 10.0 positive manual PN 249 1.1211 0.31 2.2
--.ATN.Z. 1994-09-26T22:48:53.47 10.0 undecidable manual SG 36 0.5994 0.1 0.6
--.PZI.Z. 1994-09-26T22:48:53.85 10.0 undecidable manual SG 184 0.6105 0 0.6
--.MEU.Z. 1994-09-26T22:48:51.81 10.0 undecidable manual SG 193 0.5772 -0.74 0.2
--.AU9.Z. 1994-09-26T22:48:49.24 10.0 undecidable manual SG 157 0.444 0.73 0.3
--.SOI.Z. 1994-09-26T22:48:49.59 10.0 undecidable manual PG 63 0.9213 -0.16 1.4
--.SA1.Z. 1994-09-26T22:48:48.77 10.0 undecidable manual PG 351 0.888 -0.59 0.8
--.GMB.Z. 1994-09-26T22:48:47.86 10.0 undecidable manual PG 52 0.8103 0.02 1.4
--.PL9.Z. 1994-09-26T22:48:47.12 10.0 undecidable manual PG 295 0.7437 0.51 1
--.GIB.Z. 1994-09-26T22:48:47.79 10.0 undecidable manual PG 292 0.8214 -0.38 1.1
--.MO9.Z. 1994-09-26T22:48:45.20 10.0 positive manual PG 58 0.6327 0.55 1.8
--.PZI.Z. 1994-09-26T22:48:44.20 10.0 negative manual PG 184 0.6105 -0.16 2.7
--.MNO.Z. 1994-09-26T22:48:44.51 10.0 undecidable manual SG 316 0.3552 -0.29 0.5
--.MEU.Z. 1994-09-26T22:48:43.30 10.0 positive manual PG 193 0.5772 -0.41 2.2
--.ATN.Z. 1994-09-26T22:48:43.61 10.0 negative manual PG 36 0.5994 -0.29 2.5
--.AU9.Z. 1994-09-26T22:48:41.34 10.0 positive manual PG 157 0.444 0.25 2.6
--.MNO.Z. 1994-09-26T22:48:39.50 10.0 positive manual PG 316 0.3552 0.09 2.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download