Low Clouds: Low clouds are of mostly composed of water droplets since their bases generally lie below 6,500 feet (2,000 meters). However, when temperatures are cold enough, these clouds may also contain ice particles and snow.
But the cloud that covered the Tabernacle was different from the others clouds, the bible says it look like FIRE.
Numbers 9:15-23 - On the day the tabernacle, the Tent of Testimony, was set up, the cloud covered it. From evening until morning the cloud above the tabernacle looked like fire...Whenever the cloud lifted from above the Tent, the Israelites set out; whenever the cloud settled, the Israelites encamped. At the Lord's command the Israelites set out, and at His command they encamped. As long as the cloud stayed over the tabernacle they remained in camp...Whether by day or by night, whenever the cloud lifted, they would set out...They obeyed the Lord's order, in accordance with His command through Moses.
Exodus 13:21 - By day the Lord went ahead of them in a pillar of cloud to guide them on their way, and by night a pillar of fire to give them light, so that they could travel by day or by night.
This was no ordinary cloud--this cloud was the evidence of God's presence in the midst of His people! (See Exodus 33:9-10 and Psalm 99:7.) We first read of the cloud in Exodus 13, when the people of Israel were hurriedly departing from Egypt. Pharaoh changed his mind about allowing the people to leave, and pursued them to the shores of the Red Sea. Humanly speaking, it looked as though Israel's escape from slavery in Egypt would be short-lived. The barrier of the Red Sea was in front of them and Pharaoh's army was behind them. (Talk about being between a rock and a hard place!) But there was no need to worry! We read in Exodus 13:21 that, "By day the Lord went ahead of them in a pillar of cloud to guide them on their way, and by night in a pillar of fire to give them light." God did not intend to leave His people stranded or overrun by their enemy, the Egyptians. He planned to guide and protect Israel both by day and by night with the visible evidence of His presence.
We read that God used the cloud to keep His people safe and secure from the Egyptian army throughout the night before the crossing of the Red Sea. "Then the angel of God, who had been traveling in front of Israel's army, withdrew and went behind them. The pillar of cloud also moved and stood behind them, coming between the armies of Egypt and Israel. Throughout the night the cloud brought darkness to the one side and light to the other side, so that neither went near the other all night long" (Exodus 14:19-20). And when the Egyptians chased after the Israeli people into the Red Sea, "the Lord looked down from the pillar of fire and and cloud at the Egyptian army and threw it into confusion" (Exodus 14:24).
Normally we think of Israel's 40-year period between Egypt and Canaan as the "wilderness wanderings" --and rightly so. God had declared that the people could not enter the Promised Land because of their unbelief and that the entire generation would wander in the wilderness.
"The Lord's anger burned against Israel and He made them wander in the desert forty years..." (Numbers 32:13). But forty years later, when Israel was finally ready to enter the Land, Moses reminded them that God had led them all the way in the wilderness. "And you shall remember how the Lord your God led you all the way in the desert these forty years, to humble you and test you..." (Deuteronomy 8:2). Is this a contradiction in the Bible? Did Israel wander, or did God lead them? Answer: Both! Even though Israel was wandering and not moving forward into the Land of Promise, from God's point of view their travels were not aimless or random. God was disciplining His people and teaching them valuable lessons all along the way. God knew exactly what location and length of time would best serve His purposes for teaching them these lessons. He led them accordingly, as we see in Numbers chapter 9. What wonderful cloud control!
Numbers 33 is one of those chapters in the Bible that we tend to skim over in our devotional reading because it's primarily a list of hard-to-pronounce place names. But let's not skip over the implications of this "travel log" too quickly. Every single one of those locations was hand-picked by God Himself for His wandering people. His cloud led them to each place, and it led them away at God's appointment. The exact amount of time the people spent in each place was precisely determined by the Lord--even down to the exact number of days and hours. "Sometimes the cloud stayed only from evening till morning, and when it lifted in the morning, they set out. Whether by day or by night, whenever the cloud lifted, they would set out. Whether the cloud stayed over the tabernacle for two days or a month or a year, the Israelites would remain in camp and not set out; but when it lifted, they would set out. At the Lord's command they encamped, and at the Lord's command they set out. They obeyed the Lord's order, in accordance with His command through Moses" (Numbers 9:21-23). From the human perspective, the people wandered. From the divine perspective, it was "cloud control" all the way!
Just as the Lord led His people step by step in the Sinai wilderness, so He leads us step by step through the wilderness of life. He places us in just the right place, and for just the right period of time, so He can accomplish His purposes for us there. From our perspective our lives may seem random and even aimless at times, but from God's viewpoint everything is appointed! From our perspective our lives may seem ordinary or even negligible, but God is working through all our situations and circumstances to make us more Christlike. He is more interested in us and who we are becoming, than in the earthly accomplishments that we humans regard as important.