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Event status: highly uncertain [?]

Reported quake or seismic-like event: 32 km southeast of Rijeka, Primorsko-Goranska Županija, Croatia, Friday, Dec 31, 2021 at 12:37 am (GMT +1) -

Reported quake or seismic-like event: 32 km southeast of Rijeka, Primorsko-Goranska Županija, Croatia, Friday, Dec 31, 2021 at 12:37 am (GMT +1) Reported quake or seismic-like event: 32 km southeast of Rijeka, Primorsko-Goranska Županija, Croatia, Friday, Dec 31, 2021 at 12:37 am (GMT +1)
30 Dec 23:43 UTC: First to report: VolcanoDiscovery after 5 minutes.

Earthquake details

Date & timeDec 30, 2021 23:37:56 UTC -
Local time at epicenterFriday, Dec 31, 2021 at 12:37 am (GMT +1)
Statushighly uncertain
Magnitudeunknown (2.6?)
Depth10.0 km
Epicenter latitude / longitude45.14826°N / 14.75769°E (Vinodolska općina, Primorsko-Goranska Županija, Croatia)
Antipode45.148°S / 165.242°W
Shaking intensityWeak shaking
Felt4 reports
Primary data sourceVolcanoDiscovery (User-reported shaking)
Nearby towns and cities32 km (20 mi) SE of Rijeka (Primorje-Gorski kotar) (pop: 141,200) | Show on map | Quakes nearby
121 km (75 mi) SW of Zagreb (City of Zagreb) (pop: 699,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 8.2°C (47 F), humidity: 71%, wind: 1 m/s (2 kts) from ENE
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Seismograms

Seismic station: Koelnbreinsperre, Kaernten, Austria (KBA/OE network) | Distance from quake: 241 km / 150 mi | Show on map | Station Info
Seismic station Koelnbreinsperre, Kaernten, Austria: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Translate
crikvenica (8.7 km NW of epicenter) [Map] / Very weak shaking (MMI II)
Novi Vinodolski (3.4 km SE of epicenter) [Map] / Weak shaking (MMI III) / both vertical and horizontal swinging / 2-5 s
Novi vinodolski (3.6 km ESE of epicenter) [Map] / Very weak shaking (MMI II)
Glina / Light shaking (MMI IV) / rattling, vibrating / 2-5 s

Earlier earthquakes in the same area

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