The National tribune., 1889-12-26

Local Forecasts Without the aid OF Weather Maps.
BY LIEUT. }. 7. FINLEY, u. $. SIGNAL SERVICE.
correspondence invited suggestions Desired
and Information ohccrfuily furnished. Every II.
fort employed to make this Bureau 81 practical use
TO the readers OF TnE SAroNAL TRfnUsE Al
communications should be addressed lrsaih,r
IHE NATIONAL TRIBUNE olicc. Washington, ID, G.
WINTER.
Conditions No. I.-Extreme rear OF depression
tl0iC) moving TO the southeast steady rise of
barometer; wind veerng from NV. toward
N.NE.: hay, with some dry-looking broken
stratus and no cirrus.
FORECAST.
An anticyclonic (Ligi) system Of winds aud
weather may be surInised 10 exist over the w
or NV. Fine and cold, though cloudy weather
may therefore be expected, with light winds.
Conditions No. AFTER q period Of disturbed
weather with cycl0nic iiOpi disturbances going
eastward. Barometer about or rather above tho
mean, scarcely falling. continuous calm for
some hours with persistent aud rather heavy
rain
FORECAST.
The observer seems to be near the center of n
very shallow depression li0to) whose course Is
not directly toward T. or NE. There is there
fore pro ability that anticyelonic fhighl eur
rents forming In the north Much drier
weather with high barometer may consc-
quently be with some probability anticipated
SUMMER.
Conditions No. l.. After moderately dry
weather with westerly winds aud barometer
about or rather above the mean northern limit
Of anticyclonic high. Barometer about the
mean and steady. or falling but little; wind
s.W. or W.S.W. moderate or light; overcast
with much low cloud. Temperature about or
little above the mean for the season.
FORECAST.
.vt.a,ao ,f,,l,s f,.,.9 1T
sion taking nOrthcastward direction, is prob.
ably passing over the station. No rain, or but
slight drzzling showers may be expected. The
wind viii most probably yeer little shortly,
with clearer sky.
Conditions No. 2.-Bar0meter near it's mean
level, falling somewhat; f.. or n breeze; tur-
reted stratus above with some cirrus, travelling
rather briskly from southerly point.
FORECAST.
A shallow depression (l0lO) is probably about
TO pass northward over the station. Thunder
and rain may be anticipated, followed by a
light wind from some westerly point
Conditions No. 3.-Aiter westerly winds with
temperature aud pressure near the mean Dc.
cided rise OF barometer aud very high tempe
nature; extremely clear and brilliant sky with
very few, and those only very low, soft clouds
! Very light W. or NV breezes
FORECAST.
The central part OF an anticycl0ne, moving
| slowly northeastwards, Is likely 10 pass over
the station. further increase Of tempera.
| ture may be expected followed probably by
| bright aud hot eastcrly winds
| Remafks.-Ihe weather which characteristics
anticyclones (highs) is in marked contrast 10
| that which belongs 10 the cyclones IoBs). 1t
| 49, however, subject TO far greater modification
! in relation to the seasons of the year. In
| Summer, and especially in the hottest Snmmcrs
| brilliant weather unusually accompanies the
anticyclonic Higi) circulations the dry atmos-
| pherc permitting the suns rays 10 exercise
| their full heating power on tho stratum of
air near the earth's surface. In the central
portions Of the high, particularly, the sky is
often or nearly totally devoid of cloud at other
/ times light, heecy cirrus whose motion il
extremely slow, is the principal cloud visible
| Near the exterior OF the system and especially
| on its eastern aud southeastern sides, stratus
and fine-weather cnmuus, often accompanied
| by much haze, are the prevailing cloud forms
| At the extreme western and northern borders
| GIRO cumulus and cirrus are very common
| beneath which there ia fog occasionally at the
seacoast, but rarely at inland stations. Near
| the southwestern limit of large and we'll
| formed Summer anticyclOne thigt) remarkably
| brilliant and ci0udless weather often prevails.