The July 5, 2021 earthquake
M5.2near Kukuihaele, Hawaii
A magnitude 5.2 earthquake 16.7 miles deep, 6.3 miles off Hawaii County. The 72nd strongest in Hawaii’s record since 1900, and the strongest within 50 miles since a magnitude 5.3 on April 13, 2019. 1 aftershock of magnitude 2.5 or more followed within 30 days.
The earthquake
- Magnitude
- 5.2
- local magnitude (ml)
- Depth
- 16.7 mi
- 26.9 km below the surface
- Local time
- Monday, July 5, 2021
- 13:43 HST; 23:43 UTC
- In Hawaii’s record
- 72nd
- strongest of 39,637 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event hv72565662 (“12 km NNW of Kukuihaele, Hawaii”). The USGS event page carries the ShakeMap, felt reports and the official summary.
Aftershocks
Earthquakes of magnitude 2.5 or more within 20 miles of the epicentre in the 30 days after.
1
Aftershocks in 30 days
2.6
Largest aftershock, Jul 24, 2021
0
On the first day
0
In the 7 days before
- The search radius is the surface rupture length expected for an earthquake of this magnitude (Wells and Coppersmith, 1994), at least 20 and at most 600 miles, so a great earthquake's sequence is counted along its whole fault.
Counties and cities within 50 miles
Distance from the epicentre to each county boundary (zero when inside) and to each city centre.
Counties
- Hawaii CountyHI · 6.3 mi
- Maui CountyHI · 40.2 mi
Earthquakes around the epicentre
742 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.
Earlier earthquakes of magnitude 5 or more within 50 miles, strongest first
- October 15, 2006M6.7
- October 5, 1929M6.5
- April 26, 1973M6.2
- March 19, 1926M6.0
- October 15, 2006M6.0
- March 20, 1927M6.0
- September 25, 1929M5.8
- July 15, 1940M5.6
- September 25, 1929M5.6
- November 21, 1935M5.6
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.