The National tribune. [volume] (Washington, D.C.) 1877-1917, 1889-06-13
THE WEATHER.
Notable Occurrences for the Week Ending June s.,
1882

Notable occurrences Tor tile week Ending June ),
1889.
BY LIEUT.. ]. P. FINLEY, U. s. SIGNAL SERVICE.
Correspondence invited, suggestions desired,
and information cheerfully furnished. Every eff
fort employed to make this Bureau of practical use
to the readers of THE NATIONAL TRIBUNE. All
communications should be addressed Feather,
THE NATIONAL TRIBUNE Office. Washington, d. G.
LOWS, OR AREAS OF WARM, MOIST AIR, CLOUDY
WEATHER, WITH GENERAL RAIN OR SNOW
AND HIGH WINDS.
No lou crossed the country and none were
well developed. Several started in the Lake
region, Lower Missouri Valley and Texas, but
disappeared in about two days. Average pro-
gressive velocity eastward IL miles per hour.
Average duration two days.
HIGHS OR AREAS OF COLD, DRY AIR AND GEN.
ERALLY CLEAR WEATHER, WITH MODERATE
WINDS.
The highs were not well marked, and their
paths were very irregular, generally disappear
ing in about two days. Average progressive
velocity eastward 10 miles per hour. Average
duration two days.
Temperature greatest fall in "a hours
(22o) occurred at Rapid City, Oak, on the 9th,
and Marquette, Mich, on the 8th. The great
est rise (16o) occurred at Pittsburg, Pa, on the
I'd, Fort Custer, Mont, on the 4th, and Manis-
tee, Mich, on the 9Th The maximum (102o)
occurred at Yuma, AriZ., on the Sd. The min
imum 1927 occurred at st. Vincent, OAK, on
the I'd.
Precipitation.-Rai has been reported from
every State and Territory. The heaviest lover
one inch in "a hours) was reported from Kan
sas, Michigan, Massachusetts, North Carolina.
Louisiana, Maine, Virginia, Georgia, Iowa and
Indiana. The maximum in "a hours (2.2C
inches) occurred at Shreveport, La, on the 4th
and 5th
Finds-The highest winds {40 miles per hour
and over were reported from New Mexico
Texas, Wyoming, Kansas and Missouri. The
highest measured velocity k48 miles per hour
occurred at Santa Fe, N. NJ, on the I'd; Abb
lene, Tex, 4th Fort Washakie, Wyo, 9th, and
Dodge City, Kan, 9th.
Riuers.-The maximum rise (102 inches) oc-
Cured at Cincinnati O., on the Sd. The max
imum fall (95 inches) occurred at Cincinnati
on the 4th.
Existing COnditi0ns.-An elongated trough-like
area of lop extends from New Mexico north
eastward to the Gulf of st. Lawrence. The
principal area of high is central off the North
Carolina coast. Another high is developing in
the Northwest Territory. Occasional rain from
Colorado, Wyoming and Montana eastward to
Maine. Elsewhere generally fair weather pre-
walls.
| Facts to be Remembered.-1. An isotherm is a
line wherein all places have the same temper.
| ature. This method of graphically showing
tue temperature OF the terrestrial glooe was
! first extensively used By Humboldt about 1877
Isotherms take their name from the tempera-
ture they indicate, as an isotherm of 320, 500
etc. Isotherms when mentioned indefinitely
are understood TO refer TO the mean tempera-
ture, but monthly, daily and hourly isotherms
are now in constant use by meteorologists. 2
An isObar is a line connecting those places hav.
| ing the same barometric pressure. Its use tc
indicate various conditions of pressure is SINH
lar to that of isotherm. g. Region of the Trade
Winds occupies nearly one-half of the entire
surface of the globe. From their constancy
and regularity they form by far the most i'm
portant part of the circulatory system of the
atmosphere. In the year 1856 Edmund Hal
| ley proposed the theory of the Trade Winds
and Monsoons, which Is now generally received
| as an approximation to the true solution. H,
afterwards modified his views, which were re
| vised by George Hadley in 1735.