Lenticular Clouds (lens shaped clouds) can form in the crest of the mountain waves if the air is moist. Roll Clouds can also occur in the rotors below the waves if the air is moist. These clouds are a good indication of the presence of mountain waves but, if the air is dry, there may not be any cloud to see.
Statute of Limitations. The statute of limitations for taxpayers to receive refunds is three years from the date the return was filed or two years from the date any tax was paid for the tax year in question. This doesn&amp;rsquo;t preclude you from filing a return.
Best Answer: You can go back all the way back to the first time you had income. But if you are also asking how far back can you file to receive a refund it is generally 3 years. Sometimes an exception can be made but usually not. This is in reference to Federal Taxes only. States vary.