OCR Text |
Show About Thnnder Clouds. Among the earliest symptoms of the approach of a thunder storm is the appearance ap-pearance on the western horizon of a line of cumulus ("wool pack") clouds, exhibiting a peculiar taureted structure. I say on the western horizon, for most of our changes of weather'come from that quarter, and it has been proved that thunder storms, like wind storms, ad-; ad-; vance over the country generally from some westerly point This bank of clouds , moves on, and over it appear first stream-: stream-: ere and then sheets of lighter upper clouds (cirrus, or "mare's tail") which -read over the sky with extreme rapidity. rapid-ity. The heavy cloud mass comes up under this film, and it is a general observation ob-servation that no electric explosion or downfall of rain ever takes place from a cloud unless streamers of cirrus emanating emanat-ing from its upper surface are visible when the cloud is looked at sideways from a distance. New Orleans Picavune. |