NWS Little Rock, AR - Harrison Climate Summary (Dec 2021)

...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1891 TO 2022

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             82   12/24/1955
 LOW             -11   12/23/1989
HIGHEST           80   12/03         47      33       77  12/10
LOWEST            20   12/20         29      -9       13  12/25
AVG. MAXIMUM    63.7               49.2    14.5     51.5
AVG. MINIMUM    40.3               30.2    10.1     31.0
MEAN            52.0               39.7    12.3     41.2
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                2.3    -2.3        1
DAYS MIN <= 32     9               18.4    -9.4       18
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       11.64   1982
 MINIMUM        0.22   1919
TOTALS          4.49               2.94    1.55     2.23
DAILY AVG.      0.14               0.09    0.05     0.07
DAYS >= .01        9                8.1     0.9        7
DAYS >= .10        7                                   5
DAYS >= .50        2                                   2
DAYS >= 1.00       1                0.6     0.4        0
GREATEST
 24 HR. TOTAL   3.11   12/17 TO 12/18
 STORM TOTAL    2.21
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL          13.2   1917
 24 HR TOTAL    12.9   12/22/1966 TO 12/23/1966
 SNOW DEPTH       13   12/08/1917
TOTALS             T                1.3    -1.3      3.0
 LIQUID EQUIV      T               0.10   -0.10     0.30
SINCE 7/1          T                1.8    -1.8       MM
 LIQUID 7/1    -0.10               0.00   -0.10       MM
SNOWDEPTH AVG.     0
DAYS >= TRACE      3                 MM      MM        3
DAYS >= 1.0        0                                   1
GREATEST
 SNOW DEPTH        0
 24 HR TOTAL     0.0

DEGREE DAYS
HEATING TOTAL    403                784    -381      728
 SINCE 7/1      1028               1534    -506       MM
COOLING TOTAL      6                  0       6        0
 SINCE 1/1      1515               1473      42       MM

FREEZE DATES
RECORD
 EARLIEST     09/13/1902
 LATEST       05/17/1912
EARLIEST                        11/04
LATEST                          04/22
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.3
HIGHEST WIND SPEED/DIRECTION    28/250    DATE  12/10
HIGHEST GUST SPEED/DIRECTION    41/170    DATE  12/15
                                41/250          12/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.27
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY          2


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       4
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      3
HAZE                      1

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...DATA FOR HARRISON FOR DECEMBER 2021...

.SUMMARY...
PREVALENT SOUTHWEST TO SOUTHERLY WINDS KEPT SIGNIFICANTLY ANOMALOUS
WARMTH AT HARRISON THROUGHOUT THE MONTH. THE ANOMALOUS PATTERN
MADE FOR THE WARMEST DECEMBER IN 37 YEARS, AND THE WARMEST DECEMBER
SINCE RECORDS WERE STARTED IN 1891. THE MOST SIGNIFICANT AND PROLONGED WARMTH
OCCURRED IN THE LAST SEVEN DAYS OF THE MONTH, WHERE DAILY READINGS WERE
RUNNING 25 TO NEARLY 30 DEGREES ABOVE THE 30-YEAR AVERAGE.

REVERSING THE TREND FROM THE PREVIOUS MONTH, RAINFALL ACTUALLY WAS ABOVE
AVERAGE FOR THE FIRST DECEMBER IN THREE YEARS. RAIN FELL EACH WEEK, BUT
WAS HEAVIEST AND MOST FREQUENT DURING THE THIRD WEEK OF THE MONTH (14TH-
21ST).

SNOWFALL WAS LACKING, BUT TRACE AMOUNTS WERE RECORDED ON THE 11TH, 18TH
AND 19TH. THIS MADE FOR THE FIRST DECEMBER IN TWO YEARS WITH NO MEASURABLE
SNOWFALL.

.MONTHLY AVERAGES...
THE AVERAGE HIGH TEMPERATURE WAS THE WARMEST SINCE 1957, AND THE WARMEST
ON RECORD. IT WASN`T EVEN CLOSE...WITH THE PREVIOUS RECORD WARMEST AVERAGE
HIGH AT 58.5 IN 1957.

THE AVERAGE LOW TEMPERATURE WAS THE WARMEST SINCE 1984, AND THE WARMEST
ON RECORD. THE AVERAGE MONTHLY TEMPERATURE WAS THE WARMEST SINCE 1984,
AND ALSO THE WARMEST ON RECORD, THANKS LARGELY DUE TO ANOMALOUSLY WARM
HIGH TEMPERATURES.

THERE WERE 13 DAYS WITH HIGH TEMPERATURES AT OR ABOVE 70, WHICH WAS THE
MOST IN THE MONTH SINCE 1933, AND THE MOST ON RECORD FOR DECEMBER, EASILY
EDGING OUT THE PREVIOUS RECORD OF EIGHT DAYS FROM DECEMBER 1933.

FOR ONLY THE 3RD TIME SINCE RECORDS BEGAN IN THE CITY IN 1891, THE TEMPERATURE
ROSE TO 80 DEGREES DURING THE MONTH, AND THIS OCCURRED ON THE 3RD. THIS HAS
ONLY OCCURRED IN DECEMBER TWO OTHER TIMES...IN 1929 AND MOST RECENTLY IN 1955.

THERE WERE NINE DAYS WITH LOW TEMPERATURES AT OR BELOW FREEZING, WHICH WAS
THE FEWEST IN THE MONTH SINCE 1984, AND THE FEWEST ON RECORD IN DECEMBER.
THE PREVIOUS RECORD WAS FROM 1984, WHEN ONLY 10 DAYS WITH SUB-FREEZING LOW
TEMPERATURES WERE RECORDED.

.DAILY TEMPERATURES...
DAILY TEMPERATURES WERE ABOVE AVERAGE ON 25 DAYS AND BELOW AVERAGE ON
SIX DAYS.

.DAILY RECORD TEMPERATURES TIED OR BROKEN DURING THE MONTH...
DATE  RECORD TYPE                 NEW RECORD         PREVIOUS RECORD
 2ND  HIGH TEMPERATURE            78 IN 2021           77 IN 2012
 3RD  HIGH TEMPERATURE            80 IN 2021           79 IN 1956
15TH  WARMEST LOW TEMPERATURE     65 IN 2021           60 IN 1948
24TH  WARMEST LOW TEMPERATURE     57 IN 2021           54 IN 1982
26TH  HIGH TEMPERATURE            74 IN 2021           72 IN 1971

--THE HIGH TEMPERATURE OF 80 DEGREES ON THE 3RD MARKED ONLY THE 3RD TIME
IN 130 YEARS OF RECORDS AT HARRISON WHEN THE TEMPERATURE REACHED THE 80-
DEGREE MARK IN THE MONTH OF DECEMBER. THIS WAS THE WARMEST DECEMBER
TEMPERATURE SINCE A HIGH OF 82 ON DECEMBER 24, 1955, AND MOST RECENTLY
TIED DECEMBER 11, 1929 FOR THE 2ND WARMEST TEMPERATURE ON RECORD DURING
THE MONTH.
--THE HIGH TEMPERATURE OF 78 DEGREES ON THE 2ND ENDED UP MOST RECENTLY TYING
DECEMBER 25, 1955 FOR THE 4TH WARMEST DECEMBER TEMPERATURE OVER ALL.
--THE LOW TEMPERATURE OF 65 ON THE 15TH EDED UP BEING THE WARMEST RECORDED
DECEMBER LOW TEMPERATURE AT HARRISON SINCE 2015, AND SET A NEW RECORD WARMEST
LOW FOR THE MONTH AT HARRISON. THE PREVIOUS RECORD WAS 64, WHICH HAD BEEN
SET ON DECEMBER 12, 2015.
--THE DAILY AVERAGE TEMPERATURE OF 66.0 ON THE 2ND MOST RECENTLY TIED
DECEMBER 29, 1984 FOR THE 6TH WARMEST DAILY AVERAGE TEMPERATURE ON RECORD FOR
THE MONTH.

.MONTHLY RAINFALL...
FOR THE FIRST TIME SINCE 2018, RAINFALL FOR THE MONTH WAS ABOVE AVERAGE. IT
WAS ALSO THE WETTEST DECEMBER SINCE THEN.

.DAILY RAINFALL RECORDS TIED OR BROKEN DURING THE MONTH...
DATE  NEW RECORD     PREVIOUS RECORD
17TH 2.21 IN 2021      1.35 IN 1995

.MONTHLY SNOWFALL...
FOR THE FIRST TIME SINCE 2019, NO MEASURABLE SNOW FELL.

.DAILY SNOWFALL RECORDS TIED OR BROKEN DURING THE MONTH...
NO DAILY SNOWFALL RECORDS WERE TIED OR BROKEN DURING THE MONTH.

.MISCELLANEOUS PHENOMENA...
NONE NOTED.