In mid-December, the rains returned and finally filled the ponds
again. On the 20th and 21st of December 1862, Eliza Lawrence of
Springdale in Jefferson County reported that it had been "spitting
snow" with morning temperature at 22°F and 26°F. By the
time the Confederate cavalry began their raid into Kentucky on
23 December 1862, the wind was blowing from the southwest and the
dry bulb temperature was 50°F and the wet bulb was 47°F
producing a relative humidity of about 80% at 7 a.m. The overcast
sky persisted during the day holding the 2 p.m. temperature to
only 61°F and the 9 p.m. temperature to 54°F. The next
day, Christmas Eve, the overcast sky prevailed again and the temperature
range was held from 52°F to 57°F. The winds were calm in
the morning but during the afternoon a fresh breeze from the south-southwest
began. About 4 a.m. on Christmas morning, rain began and the showers
continued the rest of the day. As a result the temperature of 54°F
at 7 a.m. rose only to 60°F by 2 p.m. The rain showers also
kept the relative humidity at 89%, typically high humidity of a
rainy day. The rain total for the day was 0.47 inch. The overcast,
high humidity, and the fresh breeze from the southwest continued
into the 26th of December with a low temperature of 55°F at
7 a.m. The rain showers ended about 11 a.m. after another 1.52
inches had fallen. That morning the Confederate cavalry had attacked
the Upton depot and burned a bridge between Munfordville in Hart
County and Upton in Hardin County. As they moved northward up the
railroad tracks burning cross ties and telegraph poles, the temperature
warmed only to 59°F by 2 p.m. with the relative humidity still
at 89%. Those conditions remained essentially unchanged at 9 p.m.
During the night a cold front passed and by morning (27 December)
the temperature had dropped to 35°F with calm winds and relative
humidity at 91%. A very light breeze blew from the north-northeast
and the temperature was 52°F during the cavalry's attack on
Elizabethtown in Hardin County. By 9 p.m., it was 45°F and
cooling rapidly as the sky began to clear. The next morning (28
December 1862), 30°F was the recorded low under a clear sky
with calm winds. The Confederates burned the trestles north of
Elizabethtown that Sunday. At 2 p.m., the temperature was 53°F
and the relative humidity was 67% with a gentle breeze from the
south-southwest. That night the cavalry camped on the banks of
the Rolling Fork River that was indeed rolling from the runoff
of the earlier rains. By the morning of the 29th of December, the
temperature was at 41°F under a sky that was still clear as
the cavalry began its egress from Kentucky. |