Earthquake with magnitude of Md 1.9 on date 11-05-1994 and time 10:59:57 (Italy) in region 2 km E Roncofreddo (FC)

A magnitude Md 1.9 earthquake occured in region: 2 km E Roncofreddo (FC), on

  • 11-05-1994 08:59:57 (UTC)
  • 11-05-1994 10:59:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0440, 12.3390 at 26 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roncofreddo FC 2 3386 3386
Borghi FC 2 2843 6229
Longiano FC 4 7126 13355
Sogliano al Rubicone FC 5 3195 16550
Montiano FC 5 1716 18266
Savignano sul Rubicone FC 7 17766 36032
Poggio Torriana RN 8 5135 41167
Gatteo FC 8 9068 50235
Gambettola FC 9 10660 60895
Santarcangelo di Romagna RN 9 22089 82984
San Mauro Pascoli FC 9 11690 94674
Verucchio RN 9 10078 104752
Cesena FC 13 96758 201510
Mercato Saraceno FC 15 6886 208396
Bellaria-Igea Marina RN 15 19519 227915
Talamello RN 16 1104 229019
San Leo RN 16 2972 231991
Novafeltria RN 17 7164 239155
Cesenatico FC 18 25796 264951
Rimini RN 18 147750 412701
Maiolo RN 19 848 413549

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Cesena (96758 inhabitants)
18 Km W of Rimini (147750 inhabitants)
31 Km SE of Forlì (117913 inhabitants)
43 Km S of Ravenna (159116 inhabitants)
45 Km SE of Faenza (58541 inhabitants)
48 Km W of Pesaro (94582 inhabitants)
59 Km W of Fano (60888 inhabitants)
61 Km SE of Imola (69797 inhabitants)
74 Km NE of Arezzo (99543 inhabitants)
92 Km E of Firenze (382808 inhabitants)
94 Km SE of Bologna (386663 inhabitants)
98 Km E of Scandicci (50609 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 1.9 1994-05-11
08:59:57
44.044 12.339 26 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 209319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-05-11 08:59:57 ± 0.95
Latitude 44.0440 ± 0.0622
Longitude 12.3390 ± 0.0296
Depth (km) 26 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 209319

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) 7304.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 255
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00453
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 209319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:17:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PGD.Z. 1994-05-11T09:00:16.00 10.0 undecidable manual SG 249 0.4662 0.32 0.6
--.SFI.Z. 1994-05-11T09:00:12.21 10.0 undecidable manual SG 248 0.3774 -0.66 0.4
--.CRE.Z. 1994-05-11T09:00:08.50 10.0 undecidable manual PG 213 0.4995 -0.09 1.8
--.PGD.Z. 1994-05-11T09:00:08.90 10.0 undecidable manual PG 249 0.4662 0.86 0.6
--.RSM.Z. 1994-05-11T09:00:07.62 10.0 undecidable manual SG 145 0.1332 0.63 0.5
--.SFI.Z. 1994-05-11T09:00:05.84 10.0 undecidable manual PG 248 0.3774 -0.58 1.2
--.RSM.Z. 1994-05-11T09:00:02.69 10.0 undecidable manual PG 145 0.1332 -0.33 1.9
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