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Light earthquake: M4.9 quake has struck near Witherlea in New Zealand

Posted by admin on March 20, 2025 0 Comments

Earthquake location -41.8367S, 174.0872WA light earthquake with magnitude 4.9 (ml/mb) was detected on Thursday, 36 kilometers (22 miles) from Witherlea in New Zealand. Exact time and date of event in UTC/GMT: 20/03/25 / 2025-03-20 19:24:54 / March 20, 2025 @ 7:24 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 19:24:54 / 7:24 pm (local time epicenter). Id of earthquake: us7000plea. Event ids that are associated: us7000plea. The epicenter was at a depth of 10 km (6 miles). Exact location of event, depth 10 km, 174.0872° East, -41.8367° South.

Close country/countries, New Zealand (c. 4 252 000 pop) (That might be effected). Event epicenter was 84 km (52 miles) from Wellington (c. 381 900 pop), 98 km (61 miles) from Lower Hutt (c. 101 200 pop), 92 km (57 miles) from Nelson (c. 59 200 pop), 101 km (63 miles) from Porirua (c. 50 900 pop), 37 km (23 miles) from Blenheim (c. 26 600 pop), 94 km (58 miles) from Richmond (c. 14 000 pop), 94 km (58 miles) from Petone (c. 6 600 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Porirua, Lower Hutt, Petone.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel anything?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 36 km SSE of Witherlea, New Zealand. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.9 mb The magnitude for the event.
Longitude 174.0872° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -41.8367° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 36 km SSE of Witherlea, New Zealand Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-03-20 19:24:54 Time when the event occurred. UTC/GMT
Updated 2025-03-20 20:24:12 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 369 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used 42 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.702 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.15 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 116 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000plea Id of event.
Event Code 7000plea An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000plea, A comma-separated list of event ids that are associated to an event.

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