E-text prepared by the Online Distributed Proofreading Team (http://www.pgdp.net) from page images generously made available by Internet Archive (http://archive.org) Note: Project Gutenberg also has an HTML version of this file which includes the original illustrations. See 39466-h.htm or 39466-h.zip: (https://www.gutenberg.org/cache/epub/39466/pg39466-images.html) or (https://www.gutenberg.org/files/39466/39466-h.zip) Images of the original pages are available through Internet Archive. See http://archive.org/details/readingweather00longrich READING THE WEATHER [Illustration: SHOWER BEHIND VALLEY FORGE _Courtesy of Richard F. Warren_] READING THE WEATHER by T. MORRIS LONGSTRETH Illustrated with Photographs by Richard F. Warren Outing Handbooks Number 43 New York Outing Publishing Company MCMXV Copyright, 1915, by Outing Publishing Company All rights reserved. DEDICATED with love, to my grandmother MARY GIBSON HALDEMAN herself responsible for so much sunshine. CONTENTS CHAPTER PAGE FORECAST i I OUR WELL-ORDERED ATMOSPHERE 11 II THE CLEAR DAY 20 III THE STORM CYCLE 42 IV SKY SIGNS FOR CAMPERS 64 THE CLOUDS 65 THE WINDS 76 TEMPERATURES 86 RAIN AND SNOW 99 DEW AND FROST 112 THE THUNDERSTORM EXPOSED 116 THE TORNADO 129 THE HURRICANE 133 THE CLOUDBURST 139 THE HALO 140 V THE BAROMETER 147 VI THE SEASONS 157 VII THE WEATHER BUREAU 167 VIII A CHAPTER OF EXPLOSIONS 175 CONDENSATIONS 185 SIGNS OF FAIR WEATHER 185 SIGNS OF COMING STORM 187 SIGNS OF CLEARING 189 WHEN WILL IT RAIN? 190 SIGNS OF TEMPERATURE CHANGE 191 SOME UNSOLVED WEATHER PROBLEMS 192 WHAT THE WEATHER FLAGS MEAN 193 OUR FOUR WORLD'S RECORDS,--AND OTHERS 195 ILLUSTRATIONS Shower Behind Valley Forge _Frontispiece_ PAGE Cirrus Deepening to Cirro-Stratus 16 Cirro Stratus with Cirro-Cumulus Beneath 32