The record-union., 1891-08-24
THE HOTTEST YET.
The Mercury Went Higher Saturday
Than at Any Time This Year,
There Have Been Forty-Tvvo Hot Day!
This Year, Thirteen Being 100
Degrees and Over.

Ihe Weather Bureau reports show the
temperature to have been at 5 a. NJ. and
8 P. NJ. on Saturday 69o and 104o, while the
highest and lowest were 1862 and 65.0
The temperatures at A. NJ. and P. NJ.
yesterday were 76o and 1919, while the
highest and lowest were 1862 and 74o. The
barometer is still low, reading at 5 P. NJ.
yesterday 29.764 inches.
THIS YEARS RECORD.
Saturday was half degree hotter than
any day this season. The hottest before
that day was 1867, on June 3Oth, July 1st
and 2lst, while Saturday it reached 1862.
The highest ever recorded here by Signal
Service records was 107.50, in September,
1883.
Yesterday made the forty-second hot
day-that is, there have been forty-two
days this year with temperature above
so, and on thirteen of those it reached
100 and above. The average number of
not days IN thirteen years past was thirty
nine. We have, therefore, three days
more than the average, and we will have
to pass through q few more during next
month. The greatest number recorded
in a record of thirteen years was fifty
eight days with temperature above 90o,
in l8SS-highest, 1872, in September.
a LIGHT YEAR
The least number of hot DAYS with q
temperature above 900 was in 1880. when
there was but sixteen during the entire
year.
The highest and lowest temperatures
one year ago on Saturday were 900 and
So; one year ago yesterday, $50 and 62o,
and one year ago to-day 960 and go, with
northwesterly winds and cloudless
skies.
Saturday night was the hottest night
since June 29th, when the lowest temper
ature during the night did Eot fall below
10. At A. NJ yesterday morning the
lowest was 76o, but between A. NJ. and 6
\. NJ. 1t fell 2, the minimum Thermometer
scoring 74o at the lowest yesterday morn
ing. 1t is TO be hoped the barometer will
rise and the wind blow brisk to high
from the south, which will rapidly cool
us OFF.
The highest temperature on Saturday at
Red Bluff was 1l4o at P. NJ.
Last night cool, fresh breeze came up
from the south, rendering it quite COM
Portable.
WHY IT Is so VERY HOT.
"We have an extraordinary climatic
condition to-day" said Lieutenant John
P. Finley OF the United States Signal
Service, to San Francisco reporter Sat
urday, ''and it is something which rarely
happens in the atmospheric conditions
which prevail over the United States,
There Is present over the Rocky Mount
aims an unusually high barometric press
ure, which in that region is producing a
decided cold wave, with temperatures
down to freezing in some places. The re-
suit is that the atmospheric circulation
near the anti-cyclone produces a hot
wave on the Pacific Coast and causes a
rise through the United States, a cycIonic
depression in the region of the great
lakes and hot wave on the Atlantic
Coast.
This state of things illustrates very
torcibly the necessity of knowing the
weather conditions over q large area Of
country to the north and east of Cali
fornia in order to understand the weather
which may be prevailing at the time in
that State.
1.-The present hot wave extends from
British Columbia to Mexico, and covers
the entire Pacific Coast. The high tenn
peratures are not due to the direct effects
Of the suns rays, but to the air heated
over the alkali plains, lava beds and
sandy deserts of Nevada Southern Ore
gon and Southern Idaho being carried
southwark over California. The earth in
those desert regions, being destitute of
vegetation, heats up very rapidly, and in
the extreme high temperatures black
Dubbed thermometer will show in the di-
rect rays heat of 2O0o Fahrenheit in the
sand.
ANOTHER CYCLONIC DISTURBANCE.
Another peculiar feature of this area
Of high barometrical pressure is the fact
OF its great extent north and south, so as
to shut off the flow of air from the ocean
inland and cause the formation Of a hot
wave along the entire length Of the Pa
citic Coast States. The hot wave of the
latter part of June and the first part of
July was of a different character. The
high barometrical pressure was central
over Oregon and Washington, and re-
mained nearly stationary in that region.
Under these circumstances the hot wave
would be confined 10 Northern California
and cold weather would prevail in Ore
gon and Washington, and moderately
warm weather in Southern California
Under the present circumstances we have
the high area from British Columbia to
Mexico, which shuts off the inflow of the
cold air from the ocean all over the coast,
Last night another cyclonic disturb
ance made its appearance near Van
cOuver's Island, moving slowly east
ward. The effect of that disturbance is to
increase the hot wave in Oregon and
Washington and i'll Northern California,
and if it continues to move rapidly east
ward its effect will be 10 shift the winds
in Northern California from north to
south and let the cold air como in from
the ocean, which will lower the tempera-
ture along the coast and to a considerable
distance inland, and will probably pro-
duce decidedly cooler weather on sun
day evening with fog during the night"