508 
FOREST AND STREAM 
November, 1921 
For All Kinds 
of Shooting 
In 10, 12, 16, 20, 28 and 410 Gauge 
With any old gun and load, shooting is 
great sport. But the men who use 
PATENTED l s o t c e k e e l d SHELLS 
have found a new pleasure in shooting; 
the pleasure that comes from the better 
bags and better scores which this better 
ammunition makes possible. 
"Perfect from Primer to Crimp ” 
WESTERN CARTRIDGE CO., East Alton, III. 
Send for “Forty Pounds” 
Mention this Magazine 
FORECASTING WEATHER 
A FEW SIMPLE RULES THAT WILL ENABLE THE OUT- 
DOORMAN TO TELL APPROXIMATELY WHAT TO EXPECT 
BY WENDELL M. WHITING 
EATHER so largely 
influences and gov- 
erns our health, 
habits and plea- 
sures, it is no won- 
der that it is a topic 
of such universal 
interest and that 
the public is fol- 
lowing the subject 
more closely every 
year. 
While it is im- 
sible to lay down 
accurately the laws' in regard to weather 
forecasting, a good general idea can be 
gained by persons of average intelligence 
if they thoroughly understand a few 
simple rules regarding the winds, baro- 
meter and temperature. 
Camping and hunting-parties, summer 
excursionists who may expect to spend 
a few days in the open, or any others 
who may be interested, can easily learn 
to foretell the weather for a couple of 
days in advance if they will closely fol- 
low the following rules, and fit them- 
selves out with a reliable, standard 
barometer and thermometer. 
Weather is quite different in different 
localities, and observers should be care- 
ful to note weather changes in their par- 
ticular locality, especially the sequences 
in which these changes occur. 
The figures “31,” “30,” “29,” “28,” etc., 
on a barometer represent inches of at- 
mospheric pressure. Between the inches 
dials are divided into lesser quantities, 
sometimes one-tenth of an inch, some- 
times one-fiftieth of an inch. Study your 
dial carefully before attempting to 
register reading from it. 
Do not put great faith in the weather 
words when they appear on the dial. 
They are approximate only, and if the 
hand points to “Rain” it does not follow 
that it must be raining. 
It is essential that a comparison of the 
barometer readings for several days be 
taken into consideration before a good 
forecast can be made. 
It is not necessary to have your bar- 
ometer outside. It will work just as well 
inside in an even temperature. 
See that your barometer is corrected 
to a “sea level” reading, before compar- 
ing it with any idea of a forecast. Any 
first-class dealer can correct it for you. 
The normal fair weather reading of a 
barometer is about 30.0 inches. A read- 
ing of 29.0 inches is considered quite 
low, and 31.0 inches is unusually high. 
So it is readily seen that a difference of 
one inch in pressure, either above or be- 
low normal, is enough to mean a great 
difference in the weather. 
In connection with the winds, the fol- 
lowing tables of rising and falling bar- 
ometer may be depended upon to indi- 
cate with considerable accuracy what 
sort of weather may be expected. 
WINDS 
Barometer Rising 
S. to S.W. 
Barometer 30.0 inches, 
or below, and rising 
slowly. 
Clearing within a fevp 
hours, and continued 
fair for next few days. 
S.W. to N.W. 
Barometer 30.10 to 
30.20 inches steady. 
Fair, with slight tem- 
jierature changes. 
S.W. to N.W. 
Barometer 30.10 to 
30.20 inches, rising rap- 
idly. 
Fair, followed within 
48 hours by warmer 
and rain. 
Going to W. 
Barometer 29.80 inches, 
or below, and rising 
rapidly. 
Clearing and colder. 
Between N. and E. 
Barometer rising. 
Weather turning cooler. 
Between S.W. and S. 
Barometer rising. 
Weather probably 
warmer to-morrow, but 
cloudy. 
Barometer Falling 
S. to E. 
Barometer 29.8 inches 
and below and falling 
rapidly. 
Severe storm of rain 1 
(in summer) or snow 
(in winter), imminent,, 
clearing and colder in- 
24 hours. 
S. to S. E. 
Barometer 30.1 to 30.2 
inches, falling rapidly. 
Rain in 18 to 24 hours.. 
S. to S.E. 
Barometer 30.1 to 30.2 
inches, falling slowly. 
Rain in about 24 hours.. 
E. to N.E. 
Barometer 30.10 and 
above and falling slow- 
ly (winter). 
Rain or snow withini 
24 hours. 
E. to N.E. 
Barometer 30.10 and 
above and falling slow- 
ly (summer). 
With light winds ; raim 
may not fall for sev- 
eral days. 
i li : : 
E. to N.E. 
Barometer 30.10 inches 
and above and falling 
rapidly (summer). 
Rain probable withini 
12 to 24 hours. 
E. to N.E. 
Barometer 30.10 and 
above and falling rap- 
idly (winter). 
Rain or snow, with in- 
creasing wind, especial- 
ly if wind is from N. E.. 
S.W. to N.W. 
Barometer above 30.2 
inches and falling 
slowly. 
Slowly rising tempera- 
ture and fair for 48- 
hours. 
S.W. to N.W. 
Barometer 30.1 to 30.2 
inches and falling rap- 
idly. 
Warmer, with rain ini 
from 18 to 24 hours. 
S.W. to N.W. 
Barometer 30.1 to 30.2 
inches and falling 
slowly. 
Warmer, with rain ini 
from 24 to 36 hours 
S.E. to N.E. 
30 and below and fall- 
ing rapidly. 
Rain, with high winds,, 
followed in 24 hours, 
by clearing and cooler. 
S.E. to N.E. 
30 and below and fall- 
ing slowly. 
Rain for one or two- 
days. 
E. to N. 
Barometer 29.8 or be- 
low, falling rapidly. 
Severe N.E. gales and' 
heavy rains or snow,, 
followed in winter by 
cold wave. 
S.E. to S.W. 
With barometer fall- 
ing. 
Storm coming from W. 
or N.W., followed by 
cooler and W. to N.W. 
winds. 
N. and E. 
With barometer fall- 
ing. 
Storm coming from S. 
or S.W., followed by 
cooler and N. to N.W. 
winds. 
( Continued on page 526 ) 
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