New Alert: Tsunami Information (Hawaiian Islands) – On The Western Flank Of Mauna Loa – 4.0,
INFORMATION, A Tsunami Information has been issued by NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI for ON THE WESTERN FLANK OF MAUNA LOA at July 23, 07:20:00 GMT.
TSUNAMI SEISMIC INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
920 PM HST FRI JUL 22 2016
TO – EMERGENCY MANAGEMENT IN THE STATE OF HAWAII
SUBJECT – LOCAL TSUNAMI INFORMATION STATEMENT
THIS STATEMENT IS FOR INFORMATION ONLY. NO ACTION REQUIRED.
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME – 0916 PM HST 22 JUL 2016
COORDINATES – 19.5 NORTH 155.9 WEST
LOCATION – ON THE WESTERN FLANK OF MAUNA LOA
MAGNITUDE – 4.0
NO TSUNAMI IS EXPECTED. REPEAT. NO TSUNAMI IS EXPECTED.
THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS ADDITIONAL DATA ARE RECEIVED.
The summit lava lake on 2/12/16. Photo via USGS Hawaiian Volcano Observatory (click to enlarge)
Webcam images show that small amounts of lava flowed onto the crater floor from two of the incandescent vents within the Puʻu ʻŌʻō crater. Yesterday, shortly before noon, and at around 10 p.m., lava flowed onto the floor from a vent on the east side of the crater, while this morning at around 6 a.m., lava flowed from one of the vents on the west side of the crater.
This current image is from a temporary thermal camera positioned on the northwest flank of Puʻu ʻŌʻō, looking southeast at Puʻu ʻŌʻō’s summit crater. The temperature scale is in degrees Celsius up to a maximum of 500 degrees (932 degrees Fahrenheit) for this camera model, and scales automatically based on the maximum and minimum temperatures within the frame. Thick fume, image pixel size and other factors often result in image temperatures being lower than actual surface temperatures.
Yesterday, Hawaii Volcano Observatory elevated the advisory level for Mauna Loa and now folks all over the Big Island are wondering when and if she will erupt again!
Here are the Mauna Loa weekly earthquake rates between 2010 and September 17, 2015.
TOP: Blue bars indicate the number of earthquakes that were located by the USGS Hawaiian Volcano Observatory seismic network. Earthquakes of all magnitudes are plotted. Subtle increases in earthquake rates started in mid-2013, while more obvious changes in rates started in 2014.
BOTTOM: Change in distance across Mauna Loa’s summit caldera between 2010 and September 17, 2015. Blue dots indicate the relative distance between two stations that span the summit caldera of Mauna Loa, shown in the map on the upper left. Sustained extension across the caldera started in mid-2014. This extension is one of the indicators of magma infilling a complex reservoir system beneath the summit and upper Southwest Rift Zone.
18 earthquakes were registered within a few minutes of each other early this morning near the Pu’u O’o crater!
Summit Observations: Weak inflationary ground tilt recorded at the summit over the past 3+ days continued to weaken. There was a swarm of earthquakes in the upper east rift zone early this morning; 18 quakes occurred within a few minutes of 1 am.
The summit lava lake has shown minor fluctuations associated with changes in spattering behavior, which are also manifested as variations in tremor amplitudes and gas release but no net change in level which was measured at around 48 m (160 ft) below the lip of the Overlook crater Tuesday morning.
Thermal image of the crater.
Small amounts of particulate material were carried aloft by the plume. The average emission rate of sulfur dioxide was around 5,400 tonnes/day for the week ending on January 6.
A 4.5 Magnitude earthquake struck the Waimea area of the Big Island this morning: Many Big Island residents may not have felt it as we are also preparing for Hurricane Iselle to hit us within the next 12 hours: