WHAT WILL YOU DO
We read that before the "day of the LORD" the sun will be turned into darkness and the moon into blood and that the day itself is of darkness and gloom and a day of clouds and thick darkness. 
In Isaiah 10:3 concerning the "day of the LORD", the question is asked; What will you do on the day of punishment and in the ruin that will come from afar and where will you flee for help and leave your wealth when nothing remains but to crouch among the prisoners or fall among the slain?
The "day of the LORD" is coming and unbeknownst to the majority is that we have been given instructions on how we should prepare for the day, and have been given prophecies to understand in the latter days  that count down to the time of its arrival and tell us to wait out its passing.
For many years I've been interested and made aware of how space weather affects us. There is only one thing that can cause "at an instant suddenly" thunder, earthquakes, loud noise, a whirlwind and tempest and flames of a consuming fire, a cloudburst, downpour, hailstones and volcanoes shooting brimstone  and that is a "solar storm" caused by a massive earth facing Coronal Mass Ejection emitting a mega X class flare from the Sun that puts extreme pressure on our tectonic plates.
This "overflowing scourge" would affect the greatest number of people and the largest geographical area on Earth and would rip off the protective shield the magnetosphere provides as a covering for the earth's atmosphere from ultra violent rays and is a prophesied event.
It says in Isaiah 30:25-26 On the day of the great slaughter, when the towers fall that the light of the moon will be as the light of the sun and the sun will be seven times brighter  while simultaneously the LORD will bind up the fracture of His people and heal the bruise He has inflicted. Btw; solar X flare is like a welders arc in brightness.
In the movie 'Knowing', click on the 2:00 clip below, we were given a preview of the skies on fire from a solar storm as Jonathan drove calmly through the chaos in the streets of Boston to his estranged father's home.
There they embrace as the solar mega X flare burns away the atmosphere like a scroll rolling up  as a wall of fire incinerates Boston and Manhattan then burning away the entire surface of the Earth.
The instructions given on how we are to prepare we read of in Isaiah 26:20 -
Come, my people, enter your chambers, and shut your doors behind you; hide yourselves for a little while until the fury has passed by. 21 For behold, the LORD is coming out from his place  to punish the inhabitants of the earth for their iniquity, and the earth will disclose the bloodshed on it, and will no more cover its slain.
We again read of this simultaneous destructive/redemptive event in Hosea 6:1 "Come, let us return to the LORD; for He has torn us, that He may heal us; He has struck us down, and He will bind us up. 2 After two days He will revive us; on the third day He will raise us up, that we may live before Him.
This event will fulfill Micah 5:2-5 when one will stand in the strength and majesty of the Name of his God and become ruler of Israel!
From Isaiah 40:31 but they who wait for the LORD shall renew their strength; they shall mount up with wings like eagles;  they shall run and not be weary; they shall walk and not faint.
The Daniel 12:12 1335 day prophecy, "Blessed is he who waits and arrives at the 1,335 days" began its countdown on the 'eve' of Rosh Hashanah, September 28, 2011 and counts out on Shavuot, May 24, 2015, a day of first fruits and reaping of the harvest.
Psalm 33:18 Behold, the eye of the LORD is on those who fear Him, on those who hope in His steadfast love, 19 that He may deliver their soul from death and keep them alive in famine. 20 Our soul waits for the LORD; He is our help and our shield. 21 For our heart is glad in Him, because we trust in His Holy Name. 22 Let your steadfast love, O LORD, be upon us, even as we hope in you.
The LORD stated in Jeremiah 25:31-38 that He would stir as an agent a "great tempest" from the farthest parts and use it as a "cup" to pour out His wrath on all nations and that the clamor or noise of destruction will resound throughout the earth and because of His fierce anger, like a lion will leave His lair.
Amos 8:9 "And on that day," declares the Lord GOD, "I will make the sun go down at noon and darken the earth in broad daylight. A strong Earth facing Coronal Mass Ejection could occult or block out the sunlight as it's particles are blown toward Earth.
REPENT The everlasting Kingdom of YHVH ruled by the authority of His Messiah is at hand, 2 Samuel 7:10-16, an Ezekiel 33:6 watching one
It wouldn't hurt to verify these witnesses.
 Isaiah 13:10, Isaiah 5:30, Joel 1:2, Joel 2:31
 Isaiah 7:8, Jeremiah 25:12-14, Daniel 7:25, Daniel 8:13-14, Daniel 9:24, Daniel 12:7, Daniel 12:11, Daniel 12:12, Revelation 12:14
 Isaiah 28:2, Isaiah 29:5-6, Isaiah 30:30, Ezekiel 13:11, Hosea 13:12-16, Joel 1:15-20, Psalm 18:6-19
 Habakkuk 3:11
 Isaiah 34:4, Revelation 6:14
 Isaiah 34:10-19, Jeremiah 25:30-33
 Psalm 91:10-13, Isaiah 11:10-14, Revelation 12:14