Science for beginners . through places having the same pressure; seefigures at end of line. Arrows point or fly the way the wind is blow-ing. The crests of high pressure are over Pennslyvania, Ohio, WestVirginia, and northern Manitoba and Saskatchewan. The principalcenter of low pressure is over western Colorado. THE GENERAL STORM; A LOW PRESSURE AREA 191 30 ^•^^ M , ?w? * 3B&-&4, ***i%r7i t#N _x_wj y^^?!^>10/_l----f\rj\ ?rlv^-^V &9\ M 1). J. \ /\ VxKlfflM (I x1?^^ ^^^^^^r^^> /jp^ ; ~Wh| paoJRkJI «Ui r UKirreo ^States V, i .= Fig. 148.—Completed weather map of 7 a. m. (Central Time) D
Science for beginners . through places having the same pressure; seefigures at end of line. Arrows point or fly the way the wind is blow-ing. The crests of high pressure are over Pennslyvania, Ohio, WestVirginia, and northern Manitoba and Saskatchewan. The principalcenter of low pressure is over western Colorado. THE GENERAL STORM; A LOW PRESSURE AREA 191 30 ^•^^ M , ?w? * 3B&-&4, ***i%r7i t#N _x_wj y^^?!^>10/_l----f\rj\ ?rlv^-^V &9\ M 1). J. \ /\ VxKlfflM (I x1?^^ ^^^^^^r^^> /jp^ ; ~Wh| paoJRkJI «Ui r UKirreo ^States V, i .= Fig. 148.—Completed weather map of 7 a. m. (Central Time) De-cember 4, 1906. The pressure lines (isobars) and the arrows showingwind direction, are the same as in the preceding chart. The brokenlines are isotherms, showing temperature; see degrees at end of single shading shows the cloud sheet around this Low; doubleshading shows where rain or snow has fallen in last 24 hours. Scat-tered cirrus clouds usually extend eastward in advance of the cloudy. Fig. 149.—Weather map of 7 a. m. (Central Time) December 5, 1906. 192 THE WEATHER cross the country. A study of the following charts will showhow. 201. The Weather Map; Pressure and Winds.—Figure147 shows the barometer readings and the wind directions ata large number of Weather Bureau stations over the UnitedStates, at 7 a. m. Central Time, Dec. 4, 1906. The figures ateach place give the barometer readings. Each solid line runs
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscience, bookyear1921
