Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 04-03-1991 and time 17:04:26 (UTC) in region 5 km S Cingoli (MC)

A magnitude Md 2.5 earthquake occured in region: 5 km S Cingoli (MC), on

  • 04-03-1991 17:04:26 (UTC)
  • 04-03-1991 18:04:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3310, 13.2100 at 5 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
Cingoli MC 5 10352 10352
Treia MC 9 9403 19755
Apiro MC 9 2280 22035
San Severino Marche MC 12 12726 34761
Staffolo AN 12 2253 37014
Poggio San Vicino MC 12 246 37260
Appignano MC 12 4213 41473
Pollenza MC 13 6618 48091
San Paolo di Jesi AN 14 933 49024
Tolentino MC 15 20069 69093
Cupramontana AN 15 4756 73849
Gagliole MC 15 620 74469
Filottrano AN 16 9499 83968
Serrapetrona MC 17 966 84934
Monte Roberto AN 18 3061 87995
Maiolati Spontini AN 18 6248 94243
Castelraimondo MC 18 4587 98830
Matelica MC 18 9981 108811
Cerreto d'Esi AN 18 3817 112628
Castelbellino AN 18 4947 117575
Belforte del Chienti MC 19 1886 119461
Montecassiano MC 19 7125 126586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km SW of Ancona (100861 inhabitants)
58 Km NE of Foligno (57155 inhabitants)
59 Km S of Fano (60888 inhabitants)
69 Km SE of Pesaro (94582 inhabitants)
71 Km E of Perugia (166134 inhabitants)
85 Km NW of Teramo (54892 inhabitants)
96 Km SE of Rimini (147750 inhabitants)
97 Km NE of Terni (111501 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 2.5
M 2.8 		1991-03-04
17:04:26		 43.331 13.21 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 137069
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-03-04 17:04:26 ± 0.165
Latitude 43.3310 ± 0.0103
Longitude 13.2100 ± 0.0136
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 137069

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) 1588.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.01085
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 137069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:07:48

M:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 137069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:32:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1991-03-04T17:05:01.60 10.0 undecidable manual SG 202 1.0101 -1.09 0.1
--.PGD.Z. 1991-03-04T17:04:49.99 10.0 undecidable manual PN 297 1.1988 0.11 1
--.ALP.Z. 1991-03-04T17:04:49.15 10.0 undecidable manual SG 154 0.5994 0.26 0.6
--.MNS.Z. 1991-03-04T17:04:46.68 10.0 undecidable manual PG 202 1.0101 -0.39 0.9
--.ASS.Z. 1991-03-04T17:04:45.22 10.0 undecidable manual SG 236 0.4884 0.24 0.6
--.AOI.Z. 1991-03-04T17:04:40.70 10.0 undecidable manual SG 52 0.3552 -0.29 0.9
--.ALP.Z. 1991-03-04T17:04:38.58 10.0 undecidable manual PG 154 0.5994 -0.84 0.5
--.ARV.Z. 1991-03-04T17:04:37.49 10.0 undecidable manual SG 311 0.2553 1.01 0.1
--.ASS.Z. 1991-03-04T17:04:36.56 10.0 undecidable manual PG 236 0.4884 -0.6 0.9
--.AOI.Z. 1991-03-04T17:04:34.16 10.0 undecidable manual PG 52 0.3552 -0.33 2.9
--.CIO.Z. 1991-03-04T17:04:33.36 10.0 undecidable manual SG 199 0.1443 1.06 0.1
--.SSO.Z. 1991-03-04T17:04:33.57 10.0 undecidable manual SG 103 0.1554 0.81 0.3
--.ARV.Z. 1991-03-04T17:04:32.27 10.0 undecidable manual PG 311 0.2553 0.02 1.8
--.SSO.Z. 1991-03-04T17:04:30.56 10.0 undecidable manual PG 103 0.1554 0.45 1.2
--.CIO.Z. 1991-03-04T17:04:30.10 10.0 undecidable manual PG 199 0.1443 0.27 3.1
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