Earthquake with magnitude of ML 1.8 on date 23-05-2021 and time 03:09:33 (UTC) in region 1 km SW Ponzano di Fermo (FM)

A magnitude ML 1.8 earthquake occured in region: 1 km SW Ponzano di Fermo (FM), on

  • 23-05-2021 03:09:33 (UTC)
  • 23-05-2021 05:09:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.095, 13.654 at 29 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
Ponzano di Fermo FM 1 1674 1674
Monte Giberto FM 2 801 2475
Petritoli FM 3 2335 4810
Grottazzolina FM 5 3398 8208
Monterubbiano FM 5 2230 10438
Monte Vidon Combatte FM 5 433 10871
Moresco FM 7 598 11469
Montottone FM 7 979 12448
Carassai AP 7 1100 13548
Magliano di Tenna FM 7 1452 15000
Ortezzano FM 8 774 15774
Monsampietro Morico FM 8 659 16433
Rapagnano FM 9 2145 18578
Fermo FM 9 37655 56233
Montefiore dell'Aso AP 9 2123 58356
Belmonte Piceno FM 9 646 59002
Monte Rinaldo FM 9 379 59381
Lapedona FM 10 1166 60547
Montegiorgio FM 10 6851 67398
Torre San Patrizio FM 11 2048 69446
Monteleone di Fermo FM 11 395 69841
Altidona FM 12 3390 73231
Monte San Pietrangeli FM 12 2458 75689
Montalto delle Marche AP 12 2122 77811
Cossignano AP 13 978 78789
Monte Urano FM 13 8353 87142
Massignano AP 13 1638 88780
Montelparo FM 13 778 89558
Campofilone FM 13 1916 91474
Servigliano FM 13 2336 93810
Ripatransone AP 14 4309 98119
Monte Vidon Corrado FM 14 731 98850
Francavilla d'Ete FM 14 964 99814
Falerone FM 15 3337 103151
Montedinove AP 15 488 103639
Santa Vittoria in Matenano FM 15 1330 104969
Pedaso FM 15 2800 107769
Sant'Elpidio a Mare FM 15 17110 124879
Porto San Giorgio FM 15 16121 141000
Montappone FM 16 1682 142682
Montegranaro FM 16 12990 155672
Massa Fermana FM 16 963 156635
Monte San Giusto MC 17 8191 164826
Rotella AP 17 906 165732
Mogliano MC 17 4696 170428
Castignano AP 18 2796 173224
Offida AP 18 5058 178282
Cupra Marittima AP 18 5398 183680
Monte San Martino MC 19 765 184445
Penna San Giovanni MC 19 1108 185553
Force AP 20 1354 186907
Smerillo FM 20 365 187272
Montefalcone Appennino FM 20 424 187696

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km N of Teramo (54892 inhabitants)
59 Km S of Ancona (100861 inhabitants)
76 Km NW of Montesilvano (53738 inhabitants)
79 Km E of Foligno (57155 inhabitants)
84 Km NW of Pescara (121014 inhabitants)
85 Km N of L'Aquila (69753 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
98 Km SE of Fano (60888 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
ML 1.8 2021-05-23
03:09:33
43.0948 13.6542 29 2021-12-29
11:12:01
Bollettino Sismico Italiano INGV 90617651
Reviewed
Rev100
ML 1.8 2021-05-23
03:09:33
43.0768 13.6652 27 2021-05-23
03:26:12
Sala Sismica INGV-Roma 90396401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-23 03:09:33 ± 0.2
Latitude 43.0948 ± 0.0072
Longitude 13.6542 ± 0.0099
Depth (km) 29 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90617651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 815
Semi-minor axis of confidence ellipse (meter) 448
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 327
Circular confidence region, given by single value of horizontal uncertainty (meter) 810
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.9254
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 19
Type of magnitude ML
Reference to an origin 90617651
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-06 07:16:37

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 90396401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-23 03:26:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2021-05-23T03:09:53.70 0.1 undecidable manual S 261 0.5549 110 0.79 75
IV.SMA1.EHZ. 2021-05-23T03:09:51.80 0.6 undecidable manual S 207 0.5198 111 -0.13 46
IV.PIEI.HHZ. 2021-05-23T03:09:51.25 0.6 undecidable manual P 299 0.9254 101 0.55 39
IV.NRCA.HHZ. 2021-05-23T03:09:50.80 0.1 undecidable manual S 237 0.473 113 0.14 92
IV.FDMO.HHZ. 2021-05-23T03:09:49.30 0.1 undecidable manual S 262 0.4182 116 0.12 93
IV.MC2.EHZ. 2021-05-23T03:09:48.60 0.1 undecidable manual S 242 0.3858 119 0.26 91
IV.ASSB.HHZ. 2021-05-23T03:09:47.56 0.6 undecidable manual P 266 0.7285 105 0.14 44
IV.ARVD.HHZ. 2021-05-23T03:09:46.03 1.0 undecidable manual P 308 0.6565 106 -0.2 22
IV.MMO1.EHZ. 2021-05-23T03:09:46.00 1.0 undecidable manual S 231 0.3085 125 -0.39 23
IV.CSP1.EHZ. 2021-05-23T03:09:46.70 0.3 undecidable manual S 270 0.3283 123 -0.16 70
IV.FOSV.EHZ. 2021-05-23T03:09:46.96 0.1 undecidable manual P 287 0.6808 106 0.33 85
IV.CIMA.HNZ. 2021-05-23T03:09:45.00 0.6 undecidable manual S 3 0.2104 137 0.81 40
IV.OFFI.HHN. 2021-05-23T03:09:44.60 0.1 undecidable manual S 172 0.161 145 1.33 59
IV.GUMA.HHE. 2021-05-23T03:09:44.60 1.0 undecidable manual S 262 0.2347 134 -0.1 24
IV.CESI.HHZ. 2021-05-23T03:09:44.74 0.1 negative manual P 261 0.5549 110 0.17 90
IV.NRCA.HHZ. 2021-05-23T03:09:43.15 0.1 undecidable manual P 237 0.473 113 -0.13 92
IV.SAP2.EHN. 2021-05-23T03:09:43.30 0.6 undecidable manual S 271 0.1862 141 -0.41 46
IV.SMA1.EHZ. 2021-05-23T03:09:43.15 0.1 undecidable manual P 207 0.5198 111 -0.86 74
IV.MF5.EHZ. 2021-05-23T03:09:43.20 0.6 undecidable manual S 233 0.1781 142 -0.36 47
IV.TERO.HHZ. 2021-05-23T03:09:43.06 0.1 undecidable manual P 184 0.473 113 -0.21 91
IV.CING.HHZ. 2021-05-23T03:09:42.80 1.0 undecidable manual P 310 0.4362 115 0.1 24
IV.CADA.HNE. 2021-05-23T03:09:42.60 0.6 undecidable manual S 38 0.1268 152 -0.12 49
IV.FDMO.HHZ. 2021-05-23T03:09:42.33 0.1 undecidable manual P 262 0.4182 116 -0.09 94
IV.EL6.EHE. 2021-05-23T03:09:42.50 1.0 undecidable manual P 300 0.4658 114 -0.66 20
IV.MNTP.HNZ. 2021-05-23T03:09:42.40 0.6 undecidable manual S 288 0.1412 149 -0.55 45
IV.TRTR.HHN. 2021-05-23T03:09:41.20 1.0 undecidable manual P 146 0.3435 122 -0.11 24
IV.MNTT.EHZ. 2021-05-23T03:09:41.70 0.6 undecidable manual S 233 0.054 167 -0.26 49
IV.MC2.EHZ. 2021-05-23T03:09:41.97 0.1 undecidable manual P 242 0.3858 119 0.04 96
IV.CSP1.EHZ. 2021-05-23T03:09:40.96 0.1 negative manual P 270 0.3283 123 -0.12 95
IV.MMO1.EHZ. 2021-05-23T03:09:40.64 0.1 undecidable manual P 231 0.3085 125 -0.17 95
IV.MF5.EHZ. 2021-05-23T03:09:39.06 0.1 negative manual P 233 0.1781 142 -0.11 98
IV.CIMA.HNZ. 2021-05-23T03:09:39.92 0.6 undecidable manual P 3 0.2104 137 0.38 46
IV.OFFI.HHN. 2021-05-23T03:09:39.34 0.1 undecidable manual P 172 0.161 145 0.33 93
IV.SAP2.EHN. 2021-05-23T03:09:39.05 0.1 undecidable manual P 271 0.1862 141 -0.21 96
IV.GUMA.HHE. 2021-05-23T03:09:39.76 0.1 undecidable manual P 262 0.2347 134 -0.07 97
IV.MNTP.HNZ. 2021-05-23T03:09:38.42 0.1 undecidable manual P 288 0.1412 149 -0.4 93
IV.CADA.HNE. 2021-05-23T03:09:38.64 0.1 undecidable manual P 38 0.1268 152 -0.05 100
IV.MNTT.EHZ. 2021-05-23T03:09:37.95 1.0 undecidable manual P 233 0.054 167 -0.3 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MNTT.EHE. ML:0 0.002855 1.52 AML other m 2021-05-23T03:09:43.85
IV.MF5.EHN. ML:0 0.0004785 0.2 AML other m 2021-05-23T03:09:43.39
IV.MNTT.EHN. ML:0 0.0008835 1.1 AML other m 2021-05-23T03:09:43.43
IV.MF5.EHE. ML:0 0.0002555 0.18 AML other m 2021-05-23T03:09:43.39
IV.GUMA.HNN. ML:0 0.000388 0.3 AML other m 2021-05-23T03:09:44.76
IV.GUMA.HNE. ML:0 0.000235 0.5 AML other m 2021-05-23T03:09:44.89
IV.GUMA.HHE. ML:2.1 0.0004235 0.28 AML other m 2021-05-23T03:09:44.91
IV.GUMA.HHN. ML:0 0.0002685 1.46 AML other m 2021-05-23T03:09:45.97
IV.CSP1.EHE. ML:0 0.0003535 0.74 AML other m 2021-05-23T03:09:48.16
IV.CSP1.EHN. ML:0 0.000309 0.08 AML other m 2021-05-23T03:09:48.28
IV.FDMO.HHE. ML:0 9.205E-5 0.96 AML other m 2021-05-23T03:09:50.20
IV.FDMO.HHN. ML:0 6.93E-5 0.86 AML other m 2021-05-23T03:09:50.49
IV.NRCA.HHE. ML:0 9.135E-5 0.1 AML other m 2021-05-23T03:09:51.37
IV.NRCA.HHN. ML:0 0.0001152 0.14 AML other m 2021-05-23T03:09:51.43
IV.SMA1.EHE. ML:0.9 1.626217185E-5 0.1392 AML other m 2021-05-23T03:09:52.15
IV.CESI.HHE. ML:1.3 3.56869165E-5 0.1792 AML other m 2021-05-23T03:09:53.86
IV.CESI.HHN. ML:1.4 4.6993305E-5 1.8208 AML other m 2021-05-23T03:09:53.03
IV.SMA1.EHN. ML:0.9 1.5329274E-5 0.1584 AML other m 2021-05-23T03:09:54.63
IV.ASSB.HHN. ML:1.4 3.07131555E-5 0.1408 AML other m 2021-05-23T03:10:00.21
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