The Kalispell bee. [volume] (Kalispell, Mont.) 1900-192?, 1902-08-19

ned by Mr.. Howard Willet.
Chinook wind will be from the south
west or west.
"At Helena Mont, the barometric
conditions accompanying the chi
hooks are as follows: An area OF low
pressure moving southwark along the
western slope Of the Rocky noun
tains, it's center passing over the
northeastern part of Montana, and an
area of high pressure central over
the region comprising Utah, Nevada
and Southern Idaho the eastern edge
of the high extending only to the
crest of the Rocky mountain range.
The winds of the westerly side of the
low take the air from the base OF the
mountains, and it's place is taken by
air from the upper regions OF the
high, the mountain region holding
back, as it were, the surface air OF
the high area. The upper region OF
the high area has a higher tempera
ture than it's surface air. In descend
ing the eastern slope of the noun
tains the air from the upper regions
of the high area is further heated dy-
namically. It's temperature rises to
frequently remains stationary at that
| height for "a hours. The vertical tenn
perature gradients of the high area
pressure must increase up to a GER
tain altitude. However, no kite OBJ
servations have been taken in the
Rocky mountain district to verify this
! fact.
THE mining town of Unionville,
six miles south of Helena and few
hundred feet higher is located the
same gulch in which Helena is stu
ated Unionville has been observed
upon several occasions to have a tenn
perature above freezing point, while
at Helena the temperature would be
Is to 80 degrees below zero. During
the latter part of January and the
first part of February, 1898, Helena
experienced the coolest weather since
the establishment of that station
During the protracted period of cold
, weather the air was calm. On the
, top of the main range of the Rocky
mountains, southwest of Helena, and
about Is miles distant, the tempera
5 ture was above the freezing point.
Another barometer is shown by
= the case of one of the Northern Pa
D cific eastbound trains.
: as the train descended the Rock,
1 mountains, it experienced in travel
: ing ten miles rapid fall of tempera
f ture from above freezing at the sum
v nit to 25 degrees below zero. TIT
l. change was SO sudden as to cause
Il great cracking sound in the cars
d which attracted the attention of tn
n passengers and alarmed them, an
" they were not treasured until told b
V the conductor that they were descend
e ing into cold wave on the easter
d slope of the mountains.
l. THE clouds usually indicate a CHI
4 nook several hours before the chang
Ie in temperature takes place. Thes
d, clouds consist of small ragged cuml
" lus not stratified in the least an
he travelling with great rapidity. The
Sc generally range themselves in para
lg lei rows, with blue sky between, an
De they are black and threatening, bl
is no precipitation occurs. Many timt
in when the eastern slope of the Rocl
he mountains is enveloped in the war
NJ cloak of chinook, the states {
of Utah, Nevada and Idaho are repol
m ing zero temperature. The temper
re- ture of chinook wind cannot pos
It's bly, be classed with the warm wealth
es that accompanies an area of IC
ed pressure, as the rise in temperature
not gradual like that usually accol
he panying the low pressure, but is us
a ally sudden. The temperature oft
gh changing 20 to 80 degrees in 10 m
re. utes.
the Gold waves seldom follow G
ted nook winds, and the temperature e,
the orally remains mild for several da
the or until an area of high pressure
'ws proaches from the northwest, reve
the ing the conditions of chinook prod
and ton.
.ins An area of low pressure over
the plateau region and an area of hi