The National tribune., 1889-04-25
THE WEATHER.
Notable Occurrences for the Week Ending April 90,
1889.


Notable Occurrences for the Week Ending April 90,
BY LIEUT.. j. P. FINLEY, U. 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, D. c.
LOWS, OR AREAS OF WARM MOIST AIR, CLOUDY
WEATHER, WITH GENERAL RAIN OR SNOW
AND HIGH WINDS.
Five such areas affected the weather of the
United States; three came from the North
west Territory, one from the Middle Plateau
region, and one from southern Texas. Average
progressive velocity eastward Is miles. Aver
age duration three and one half days.
HIGHS, OR AREAS OF COLD, DRY AIR AND GEN.
ERALLY CLEAR WEATHER, WITH MODERATE
WINDS.
Three such areas affected the weather of the
United States; one came from the Northwest
Territory, another from the Middle Plateau
region, aud the third moved northward along
the Pacific coast. Average progressive velocity
20 miles per hour. Average duration three
days.
Temperature-The greatest fall in "a hours
t240) occurred at Cairo H., on the 14th. The
greatest rise t22o) occurred at Pueblo, Colo, on
the 18TH The maximum 1862 occurred at Rio
bIdhu0 Nlbys 1tA.y pH TIC 1OJu lHc UulullHuu
(20o) occurred at Mortified, Vt. on the 18th
Frost (killing) occurred at Denver and Mont
rose, Colo, on the 18th and Goth, and at Port
land, Ore, and Olympia Wn. T.. on the 18th.
Precipitation has been reported from
every State and Territory except Arizona
and New Mexico. SnO1u fell in southwest Da-
kota on the 18th and in Colorado on the 10TH
The heaviest precipitation lover one inch in "a
hoursj was reported from Alabama, Mississippi,
Louisiana, North Carolina, Georgia, Florida,
Tennessee, Virginia, Kansas, Dakota, Michi-
gan, Iowa, Missouri and Indiana. The maxi
mum in "a hours 1852 inches) occurred at
Jacksonville, Fla, on the 18th and 18th.
Winds.-The highest winds occurred in the
Northwest and along the Gulf and Atlantic
coasts. The highest measured velocity go
miles per hour occurred at Mobile, Ala, on the
18th.
RiUerS-The maximum rise in "a hours (73
iuches) occurred at Nashville, Tenn, on the
10th. The maximum fall (67 inches) occurred
at Parkersburg, w. Va, on the 18th.
Existing COnditiOnS.-A lOU of small energy is
leaving the country over the Gulf of st. Law
/ renee The principal LOU is central in Wiscon-
/ sin, and the third one appears to be develop
| ing in southern Texas. high is central in
northern Alabama, and another is moving east
/ ward from Montana. Rain in the Gulf and At
| lantic Coast States and in the Lake Region
elsewhere generally fair weather prevails.
fQctS 10 Oe heGleH0eTeU.-1. An examination OF
! Signal Service records for the past 16 years
shows a small increase in the number of storms
on March 81 the vernal equinox, and a diminu-
tion on Sept. q, the Autumnal equinox. 2.
| The total daily wind movement was per cent.
aboUe the average on March 81, and IL per cent.
below the average on Sept. 81. 3. The mean
pressure was .03 inches bel0W the average Oh
March q and .03 inches ADORE the average on
Sept 81. A. The evidence preponderates very
largely in favor of the view that there is no
storm period occurring each 21st of March and
| September 5. The popular beliefin "equinoc-
tial storms" results from the fact that during
| March, in the United States, storms occur at
an average interval of about four days. If a
storm occurs two or three days before or after
the 21st people regard it as the 'equinoctial,'
and no thought appears to be given to the fact
that in the regular course of things a storm
must occur on one of those days 6. The equi-
noxes can have absolutely no influence on the
development aud progress of storms.