The sound was felt or heard in all corners of San Diego County
"Residents from Chula Vista to Oceanside are reporting a large rumble around 12:45 p.m. Friday.
Some people describe it as sounding like a door slamming while others said it was strong enough to rattle windows.
A check of the U.S. Geological Survey website shows no earthquake activity.
One San Diego resident mentioned the sound via Twitter "Uh... La Jolla just shook. Or at least my street did. Big boom too." Sometimes, a military exercise known as chaff can cause a similar sound. On Friday, however, Tina Stall with the National Weather Service said there was no visible chaff in the area at the time the noise was reported.
A spokesperson from Camp Pendleton said Marines are not training with anything unusual. They often train with various military equipment and will be training with tanks both Saturday and Sunday." (more at source)
I think this is the first time that these worldwide sounds, heard in Russia, Ukraine, Canada, etc have been heard and documented so thoroughly over such a major metropolitan area in the US. People have been calling the strange sound "Sounds of the Apocalypse." I don't know if these sounds are a progressive fulfillment of the following verse, but it certainly gives one pause for thought with all the other historic, apocalyptic, and unusual things happening today on earth. Even the UK Daily Telegraph noted, "America in grip of fire and floods"
"A noise shall come even to the ends of the earth; for the LORD hath a controversy with the nations, he will plead with all flesh; he will give them that are wicked to the sword, saith the LORD." (Jeremiah 25:31).
Please continue to be in prayer for missionaries, the lost, and the weakening of faith and of strength. The LORD made this promise to Israel but He also will do the same for his Bride:
The Ransomed Shall Return
The wilderness and the dry land shall be glad;
the desert shall rejoice and blossom like the crocus;
it shall blossom abundantly
and rejoice with joy and singing.
The glory of Lebanon shall be given to it,
the majesty of Carmel and Sharon.
They shall see the glory of the LORD,
the majesty of our God.
Strengthen the weak hands,
and make firm the feeble knees.
Say to those who have an anxious heart,
“Be strong; fear not!
Behold, your God
will come with vengeance,
with the recompense of God.
He will come and save you.”