The National tribune., 1889-03-28
THE WEATHER.
Notable Occurrences for the Week Ending March %,
1880.

Notable Occurrences for the Week Ending March %,
1889.
BY LIEUT.. ]. P. FINLEY, Q. s. SIGNAL SERVICE.
Correspondence invited suggestions desired,
and information eheerfully furnished. Every eff
fort employed to make this Bureau of practical
to the readers OF THE NATIONAL TRIBUNE. All
communications should be addressed Weather,
THE NATIONAL TRIBUNE Office. Washington, ID. O.
LOWS, OR AREAS OF WARM, MOIST AIR, CLOUDY
WEATHER, WITH GENERAL RAIN Or SNOW
AND HIGH WINDS.
Three such areas affected the weather of the
United States, one of which came from the
North Pacific coast, another from the North
west, and the third from the Gulf. Average
progressive velocity eastward Ia miles per hour.
Average duration four days.
HIGHS, OR AREAS OF COLD, DRY AIR AND GEN.
ERALLY CLEAR WEATHER, WITH MODERATE
WINDS.
Two such areas affected the weather of the
United States, one of which came from the
North Pacific coast, and the other from Mani
toba Average progressive velocity eastward
II miles per hour. Average duration three
days.
temperature greatest faH in 24 hours
(26o) occurred at Rapid City, Oak, on the Goth.
The greatest rise (240) occurred at Wichita,
Kan, on the 18th. The maximum (84o) oc-
Cured at Brownsville and Rio Grande City,
Tex, on the 18th, 18th, 10th and Goth. The
minimum (1S0) occurred at Mortified, VT, on
the ed, and Denver, Colo, on the 23d.
Precipitdti0n.-Rain or snow has been report
ed from every State and Territory. The heav-
lest tower one inch in ID hours) was reported
from Massachusetts,, California, Florida, Missis-
sippi, Arkansas, Tennessee Missouri Kansas
North Carolina, Maryland and Virginia The
maximum in "a hours (2.S6 inehesl occurred at
Springfield, Mo-, on the 18th and 18th.
Winds.-High winds were reported from the
Mississippi and Missouri Valleys, the Gulf. and
along the New England coast. The highest
measured velocity (62 miles per hour occurred
at Woods Holl, Mass, on the 21st.
RireYS-The maximum rise (95 inches) &C.
Cured at Nashville, Tenn, on the 22d. The
maximum fall (13 inehesl occurred at Parkers-
burg, w. Va, on the 23d.
| Existing CoRditi0nS-One I0tU is approaching
| from the Northwest territory, another from
| the Gulf of Mexico, and third passing east
ward over the Gulf of st. Lawrence. A hiqh is
| central in Nebraska, moving eastward. Light
rains in Washington Territory and in the West
| Gulf States; elsewhere generally fair weather.
Facts to be Remembered.-1. The term "cold
wave" is technical one devised by the United
| States Signal Service, not to represent the in
tensity of the cold, except within certain limits,
but more especially to show very decided falls
! in temperature within limited time.
2. The cold wave of the Signal Service indi-
! cates ka) thaG INC lniAlhuin temperature VIII
sink to 45o Fahrenheit or below, and (b) that a
fall of 15o or more will take place from any
given hour of one day until the same hour OF
the following day.
g. A cold wave results from the movement OF
high of marked intensity across the United
States. These highs come from British America
and generally move southeastward over the
Missouri and Mississippi Valleys. These great
valleys form natural pathway of gradually
descending surfaces over which the cold drv
therefore heavy air sweeps southwark to the
Gulf and eastward to the Atlantic
a. During July cold waves are unknown
and in June and August not more than five
percentum of the high areas are marked by
conditions where the abnormal fall of tempera.
ture exceeds 15o in "a hours, and at the same
time falls below 400 Fahrenheit