Earthquake 1 km S Olevano Romano (RM), Magnitude Md 2.5, 24 November 1986 time 19:27:36 (Timezone UTC)

A magnitude Md 2.5 earthquake occured in region: 1 km S Olevano Romano (RM), on

24-11-1986 19:27:36 (UTC)
24-11-1986 20:27:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.8530, 13.0300 at 10 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.

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Display location by

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
Olevano Romano	RM	1	6687	6687
Bellegra	RM	3	2887	9574
Roiate	RM	4	737	10311
San Vito Romano	RM	5	3273	13584
Genazzano	RM	5	6036	19620
Serrone	FR	6	3099	22719
Paliano	FR	6	8281	31000
Capranica Prenestina	RM	7	351	31351
Rocca Santo Stefano	RM	7	975	32326
Affile	RM	7	1548	33874
Rocca di Cave	RM	7	377	34251
Arcinazzo Romano	RM	8	1348	35599
Pisoniano	RM	9	770	36369
Cave	RM	9	11287	47656
Gerano	RM	10	1263	48919
Piglio	FR	10	4666	53585
Canterano	RM	10	351	53936
Subiaco	RM	10	9074	63010
Cerreto Laziale	RM	11	1118	64128
Castel San Pietro Romano	RM	11	902	65030
Rocca Canterano	RM	12	196	65226
Palestrina	RM	12	21672	86898
Poli	RM	12	2418	89316
Jenne	RM	12	366	89682
Valmontone	RM	12	15959	105641
Casape	RM	13	744	106385
Colleferro	RM	14	21595	127980
Acuto	FR	14	1920	129900
Labico	RM	14	6379	136279
Ciciliano	RM	14	1336	137615
Agosta	RM	15	1765	139380
San Gregorio da Sassola	RM	15	1619	140999
Cervara di Roma	RM	16	455	141454
Artena	RM	16	14276	155730
Marano Equo	RM	16	779	156509
Anagni	FR	16	21464	177973
Zagarolo	RM	17	17843	195816
Sambuci	RM	17	925	196741
Fiuggi	FR	17	10536	207277
Gavignano	RM	17	1916	209193
Gallicano nel Lazio	RM	17	6334	215527
Anticoli Corrado	RM	18	915	216442
Segni	RM	18	9159	225601
Saracinesco	RM	18	185	225786
Trevi nel Lazio	FR	18	1822	227608
Vallepietra	RM	19	283	227891
Castel Madama	RM	19	7399	235290
San Cesareo	RM	19	15153	250443
Roviano	RM	20	1351	251794
Camerata Nuova	RM	20	447	252241
Rocca di Botte	AQ	20	856	253097

Municipalities with at least 50000 inhabitants

An earthquake occurred to

23 Km SE of Tivoli (56533 inhabitants)

28 Km NE of Velletri (53303 inhabitants)

30 Km SE of Guidonia Montecelio (88673 inhabitants)

43 Km NE of Aprilia (73446 inhabitants)

44 Km N of Latina (125985 inhabitants)

45 Km E of Roma (2864731 inhabitants)

48 Km E of Pomezia (62966 inhabitants)

56 Km NE of Anzio (54211 inhabitants)

63 Km SW of L'Aquila (69753 inhabitants)

66 Km E of Fiumicino (78395 inhabitants)

85 Km SE of Terni (111501 inhabitants)

99 Km SE of Viterbo (67173 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
Bulletin Rev1000	Md 2.5	1986-11-24 19:27:36	41.853	13.03	10	2013-07-15 08:41:04	Bollettino Sismico Italiano INGV	37349

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	1986-11-24 19:27:36 ± 0.371
Latitude	41.8530 ± 0.0393
Longitude	13.0300 ± 0.0252
Depth (km)	10 (operator assigned)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	1000 -> BULLETIN-VAX
Event type	earthquake
Origin ID	37349

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)	4840.0
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	5
Number of defining phases	5
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)	0.00219
Epicentral distance of station farthest from the epicenter (degree)	0.00534
Number of stations at which the event was observed	3
Number of stations from which data was used for origin computation	3

Magnitude information

Md:2.5

Field	Value
Value	2.5
Uncertainty
Num. used stations	1
Type of magnitude	Md
Reference to an origin	37349
Agency	INGV
Autore	Bollettino Sismico Italiano INGV
Time of creation (UTC)	2013-01-04 17:37:28

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance(km)	Residual	Weight
--.AQU.Z.	1986-11-24T19:27:57.50	10.0	undecidable	manual	SG	28	0.5661	1.16	0.2
--.SD1.Z.	1986-11-24T19:27:57.50	10.0	undecidable	manual	SG	103	0.5883	0.3	0.7
--.SD1.Z.	1986-11-24T19:27:48.00	10.0	undecidable	manual	PG	103	0.5883	-0.27	1.7
--.AQU.Z.	1986-11-24T19:27:46.50	10.0	undecidable	manual	PG	28	0.5661	-1.27	0.5
--.RMP.Z.	1986-11-24T19:27:42.00	10.0	undecidable	manual	PG	260	0.2442	0.24	1.9

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.

Download

Type	Description	Link
QuakeML - small	Event, Origin, FocalMechanism	Download
QuakeML - full	Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude	Download

Earthquake with magnitude of Md 2.5 on date 24-11-1986 and time 19:27:36 (UTC) in region 1 km S Olevano Romano (RM)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

Origin

Uncertainty

Quality

Md:2.5