National Weather Service United States Department of Commerce
 
000
CXUS54 KLZK 031931
CLAHRO

CLIMATE REPORT...CORRECTED FORMATTING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1122 AM CST SAT JAN 02 2021

...................................

...THE HARRISON CLIMATE SUMMARY FOR THE YEAR OF 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            112   08/03/2011
                       07/18/1936
                       08/09/1934
 LOW             -24   02/12/1899
HIGHEST           95   07/20         68      27       96  08/19
LOWEST            11   02/14         48     -37        7  03/04
AVG. MAXIMUM    69.1               68.6     0.5     68.8
AVG. MINIMUM    48.3               47.2     1.1     48.0
MEAN            58.7               57.9     0.8     58.4
DAYS MAX >= 90    30               37.1    -7.1       35
DAYS MAX <= 32     2                9.0    -7.0        5
DAYS MIN <= 32    64               78.1   -14.1       79
DAYS MIN <= 0      0                0.6    -0.6        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       71.03   1945
 MINIMUM       23.26   1901
TOTALS         53.60              44.14    9.46    56.98
DAILY AVG.      0.15               0.12    0.03     0.16
DAYS >= .01      122              116.1     5.9      122
DAYS >= .10       81                                  86
DAYS >= .50       34                                  35
DAYS >= 1.00      15               11.8     3.2       18
GREATEST
 24 HR. TOTAL   4.31   10/28 TO 10/29


SNOWFALL (INCHES)
RECORDS
 TOTAL          33.5   1912
 24 HR TOTAL    14.3   02/15/1993 TO 02/15/1993
 SNOW DEPTH       24   01/21/1918
TOTALS           3.8               11.5    -7.7      4.1
 LIQUID EQUIV   0.40               1.20   -0.80     0.41
SINCE 7/1        3.0                1.8     1.2       MM
 LIQUID 7/1     0.30               0.00    0.30       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE     15               17.0    -2.0       22
DAYS >= 1.0        1                2.0    -1.0        2
GREATEST
 SNOW DEPTH        3   12/14                           2  01/20
                       12/15
 24 HR TOTAL     3.0   12/13 TO 12/13                2.0  01/19 TO 01/19


DEGREE DAYS
HEATING TOTAL   3604               4005    -401     3881
 SINCE 7/1      1407               1599    -192       MM
COOLING TOTAL   1404               1417     -13     1581
 SINCE 1/1      1070               1416    -346     1581

FREEZE DATES
RECORD
 EARLIEST     09/13/1902
 LATEST       05/17/1912
EARLIEST                        10/30
LATEST                          04/18
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.9
HIGHEST WIND SPEED/DIRECTION    37/340    DATE  06/04
HIGHEST GUST SPEED/DIRECTION    60/350    DATE  06/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.38
NUMBER OF DAYS FAIR          209
NUMBER OF DAYS PC             95
NUMBER OF DAYS CLOUDY         62


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             60     MIXED PRECIP               0
HEAVY RAIN               53     RAIN                      75
LIGHT RAIN              141     FREEZING RAIN              3
LT FREEZING RAIN          5     HAIL                       0
HEAVY SNOW                0     SLEET                      8
FOG                     161     FOG W/VIS <= 1/4 MILE     40
HAZE                     13

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

&&

A REVIEW OF 2020 WEATHER AND CLIMATE DATA FOR HARRISON

SUMMARY
======================================================================
AT HARRISON, 2020 WAS THE WARMEST YEAR SINCE 2017. THERE WERE 64 DAYS
WITH FREEZING TEMPERATURES, AND ONLY 30 DAYS WITH READINGS AT OR ABOVE
90 DEGREES. THIS WAS THE 7TH YEAR IN A ROW WITH NO 100-DEGREE DAYS.

SPEAKING OF 100-DEGREE DAYS, THERE HAVE BEEN NONE RECORDED AT HARRISON
SINCE JUNE 27, 2013. AS OF DECEMBER 31, 2020, THIS MARKS 2,744 DAYS
WITHOUT A 100-DEGREE TEMPERATURE. THIS IS THE ALL-TIME RECORD STREAK
WITH NO 100-DEGREE DAYS SINCE RECORDS BEGAN AT HARRISON IN LATE 1891.
THE PREVIOUS RECORD WAS 2,481 DAYS FROM SEPTEMBER 17, 1956 TO JULY 3,
1963.

IN TERMS OF DEPARTURES FROM NORMAL (OR COMPARISON WITH THE 30-YEAR
AVERAGE), THE MOST SIGNIFICANT WARMTH OCCURRED IN MARCH, WITH A DEPARTURE
FROM NORMAL OF +5.5 DEGREES. THE MOST SIGNIFICANT COOL PERIOD OCCURRED
IN MAY, WITH A DEPARTURE FROM NORMAL OF -2.4 DEGREES. IN TERMS OF AVERAGES,
THOUGH, JULY WAS WARMEST AND JANUARY WAS COLDEST.

THOUGH ANNUAL RAINFALL WAS THE LEAST IN TWO YEARS, IT WAS STILL
SIGNIFICANTLY ABOVE AVERAGE (BY NEARLY NINE AND A HALF INCHES). IT
WAS THE 13TH WETTEST YEAR ON RECORD AT HARRISON.

FOR THE 5TH YEAR IN A ROW, SNOWFALL CONTINUED TO RUN BELOW AVERAGE. SNOW
FELL IN JANUARY, FEBRUARY, APRIL, AND DECEMBER, BUT WAS ONLY MEASURABLE
IN FEBRUARY, APRIL, AND DECEMBER. THE MOST SIGNIFICANT SNOW FELL IN DECEMBER,
THOUGH APRIL SAW AN UNSEASONABLY LATE HALF INCH OF SNOW AT MID-MONTH.
======================================================================

REMEMBER, ALL DATA LISTED BELOW IS PRELIMINARY UNTIL FINAL QUALITY CONTROL
BY THE NATIONAL CENTER FOR ENVIRONMENTAL INFORMATION IN ASHEVILLE,
NORTH CAROLINA.

(DFN = DEPARTURE FROM NORMAL)

2020 TEMPERATURE AVERAGES AND EXTREMES  HARRISON, ARKANSAS
---------------------------------------------------------------------
          AVERAGE TEMPERATURES          TEMPERATURE EXTREMES
MONTH   HIGH     LOW   MONTHLY   DFN   MAX DATE(S)       MIN DATE(S)
---------------------------------------------------------------------
JAN     49.1    31.9    40.5    +4.1    71      15       16   20
FEB     50.9    31.3    41.1    +0.6    81       2       11   14
MAR     64.5    44.0    54.3    +5.5    91      26       28   21
APR     67.0    44.6    55.8    -2.2    92       8       28   18
MAY     73.3    53.6    63.4    -2.4    86      24, 2    36    9
JUN     85.3    63.9    74.6    +0.9    93       5       56   24
JUL     89.4    69.1    79.2    +0.8    95      20       62   13
AUG     86.6    64.5    75.5    -2.1    93      25, 24   55   20, 5
SEP     79.8    59.4    69.6    +0.4    89       5       46   20
OCT     68.4    45.1    56.7    -2.2    86       7       32   30
NOV     63.7    40.8    52.3    +3.8    78       4       25   30
DEC     51.5    31.0    41.2    +3.1    77      10       13   25
ANNUAL  69.13   48.27   58.7    +0.8    95    JUL 20TH   11 FEB 14TH

2020 RAINFALL, DEPARTURES, AND EXTREMES  HARRISON, ARKANSAS
---------------------------------------------------------------------
MONTH  RAINFALL     DFN   MAX (CALENDAR DAY)  MAX (24 HOURS)
---------------------------------------------------------------------
JAN     4.40      +1.84  1.71 (10TH)       2.39 (10TH-11TH)
FEB     3.76      +1.12  1.72 ( 4TH)       1.72 (4TH)
MAR     5.54      +1.75  1.29 (14TH)       1.36 (13TH-14TH)
APR     4.87      +0.55  1.72 (12TH)       1.90 (11TH-12TH)
MAY     7.76      +3.07  2.31 (17TH)       2.85 (16TH-17TH)
JUN     4.71      +0.47  1.85 (21ST)       1.87 (20TH-21ST)
JUL     2.32      -0.82  0.54 (29TH, 28TH) 0.62 (27TH-28TH)
AUG     4.37      +0.61  1.82 (11TH)       1.82 (11TH)
SEP     3.42      -0.78  1.39 (10TH)       1.42 (10TH-11TH)
OCT     8.42      +4.87  3.71 (28TH)       4.31 (28TH-29TH)
NOV     1.80      -2.43  0.70 (21ST)       0.80 (21ST-22ND)
DEC     2.23      -0.97  0.77 (30TH)       0.77 (30TH)
ANNUAL 53.60      +9.46  3.71 (OCT 28TH)   4.31 (OCT. 28TH-29TH)

2020 SNOWFALL, DEPARTURES, AND EXTREMES  HARRISON, ARKANSAS
---------------------------------------------------------------------
MONTH  SNOW      DFN   MAX (CALENDAR DAY)   MAX (24 HOURS)  HIGHEST DEPTH
---------------------------------------------------------------------
JAN     T       -4.2T (30TH, 24TH, 23RD) T (30TH, 24TH, 23RD)   0
FEB    0.3      -2.9   0.3 (6TH)               0.3 (6TH)        T (6TH)
MAR    0.0      -2.0   0.0                     0.0              0
APR    0.5      +0.2   0.5 (14TH)              0.5 (14TH)       T (14TH)
MAY    0.0       0.0
OCT    0.0      -0.1
NOV    0.0      -0.4
DEC    3.0      +1.7   3.0 (13TH)              3.0 (13TH)       3 (14TH)
ANNUAL 3.8      -7.7   3.0 (DEC. 13TH)         3.0 (DEC. 13TH)  3 (DEC. 14TH)

---------------------------------------------------------------------
MISCELLANEOUS DATA (FIRST/LAST DATES, ETC.)
---------------------------------------------------------------------
DAYS WITH MINIMUMS AT OR BELOW FREEZING     64  FEWEST SINCE 2017
DAYS WITH MAXIMUMS AT OR ABOVE 90 DEGREES   30  FEWEST SINCE 2017
DAYS WITH MAXIMUMS AT OR ABOVE 100 DEGREES   0  7TH YEAR IN A ROW

LAST FREEZE                         APRIL 18TH  LATEST SINCE 2013
FIRST 80-DEGREE DAY               FEBRUARY 2ND  EARLIEST SINCE 1943
                                                (3RD EARLIEST ON RECORD)
FIRST 90-DEGREE DAY                 MARCH 26TH  EARLIEST SINCE 2017
                                               (5TH EARLIEST ON RECORD)
LAST 90-DEGREE DAY                 AUGUST 29TH  EARLIEST SINCE 2008
LAST 80-DEGREE DAY                OCTOBER 22ND  LATEST SINCE 2017
FIRST FREEZE                      OCTOBER 30TH  LATEST SINCE 2018

DAILY RECORD TEMPERATURES TIED OR BROKEN DURING THE YEAR
---------------------------------------------------------------------
DATE   RECORD TYPE            NEW RECORDPREVIOUS RECORD
---------------------------------------------------------------------
FEB.  2ND  HIGH TEMPERATURE         81 IN 2020  77 IN 1920
MAR. 26TH  HIGH TEMPERATURE         91 IN 2020  81 IN 2012, 1991
MAR. 27TH  WARMEST LOW TEMPERATURE  67 IN 2020  64 IN 1907
APR.  8TH  HIGH TEMPERATURE         92 IN 2020  89 IN 2011
APR. 18TH  LOW TEMPERATURE          28 IN 2020  30 IN 1961
MAY  11TH  COLDEST HIGH TEMPERATURE 51 IN 2020  57 IN 1990
MAY  12TH  COLDEST HIGH TEMPERATURE 49 IN 2020  60 IN 1919
OCT. 24TH  COLDEST HIGH TEMPERATURE 46 IN 2020  48 IN 1972
OCT. 27TH  COLDEST HIGH TEMPERATURE 42 IN 2020  45 IN 1913
DEC. 10TH  HIGH TEMPERATURE         77 IN 2020  74 IN 2015

ADDITIONAL INFORMATION AND HONORABLE MENTION (TEMPERATURE DATA)
---------------------------------------------------------------------
DATE    PARAMETER AND DATE(S)INFORMATION
---------------------------------------------------------------------
FEB.  2ND   HIGH TEMPERATURE OF 81      MOST RECENTLY TIED FEB. 13, 1962
                                        FOR THE 5TH WARMEST TEMPERATURE
                                        ON RECORD IN FEBRUARY AT HARRISON

MAR. 26TH   HIGH TEMPERATURE OF 91      MOST RECENTLY TIED MAR. 19, 1907
                                        FOR THE 3RD WARMEST TEMPERATURE ON
                                        RECORD AT HARRISON IN MARCH

MAR. 27TH   LOW TEMPERATURE OF 67       MOST RECENTLY TIED MAR. 4, 1955 FOR
                                        THE 2ND WARMEST LOW TEMPERATURE ON
                                        RECORD IN THE MONTH OF MARCH AT
                                        HARRISON

APR.  8TH   HIGH TEMPERATURE OF 92      MOST RECENTLY TIED APR. 18, 2006
                                        FOR THE 6TH HOTTEST ON RECORD FOR
                                        APRIL AT HARRISON

APR. 18TH   LOW TEMPERATURE OF 28       LATEST FREEZE SINCE MAY 3, 2013

MAY  12TH   HIGH TEMPERATURE OF 49      MOST RECENTLY TIED MAY 5, 1907
                                        FOR THE 5TH COLDEST HIGH ON RECORD IN
                                        THE MONTH OF MAY AT HARRISON

OCT. 27TH   HIGH TEMPERATURE OF 42      7TH COLDEST HIGH TEMPERATURE IN THE
                                        MONTH OF OCTOBER AT HARRISON.

DEC. 10TH   HIGH TEMPERATURE OF 77      MOST RECENTLY TIED DEC. 2, 2012 FOR
                                        THE 5TH WARMEST TEMPERATURE ON RECORD
                                        IN MONTH OF DECEMBER AT HARRISON.

DAILY RECORD RAINFALL TIED OR BROKEN DURING THE YEAR
---------------------------------------------------------------------
DATE     NEW RECORD   PREVIOUS RECORD
---------------------------------------------------------------------
JAN. 10TH   1.71 IN 2020    1.08 IN 1975
JUN.  8TH   1.79 IN 2020    1.69 IN 1962
AUG. 11TH   1.82 IN 2020    1.73 IN 1999
OCT. 26TH   2.15 IN 2020    1.14 IN 1970
OCT. 28TH   3.71 IN 2020    3.03 IN 1991

ADDITIONAL INFORMATION AND HONORABLE MENTION (RAINFALL DATA)
---------------------------------------------------------------------
DATE          PARAMETER                        INFORMATION
---------------------------------------------------------------------
OCT. 28TH       3.71 INCHES OF RAIN              WETTEST OCTOBER DAY
                                                 SINCE 2009 AND 3RD
                                                 WETTEST DAY ON RECORD
                                                 DURING THE MONTH.

OCT. 28TH-29TH  4.31 INCHES OF RAIN IN 24 HOURS  HIGHEST 24-HOUR RAINFALL
                                                 IN OCTOBER SINCE 2009,
                                                 AND THE 3RD HIGHEST ON
                                                 RECORD IN OCTOBER.

DAILY RECORD SNOWFALL TIED OR BROKEN DURING THE YEAR
---------------------------------------------------------------------
(NO DAILY SNOWFALL RECORDS TIED OR BROKEN DURING THE YEAR)

ADDITIONAL INFORMATION AND HONORABLE MENTION (SNOWFALL DATA)
---------------------------------------------------------------------
DATE     PARAMETER AND DATE(S)INFORMATION
---------------------------------------------------------------------
APR. 14TH   0.5 INCHES OF SNOW      MOST RECENTLY TIED APR. 14, 1980
                                    FOR 3RD LATEST MEASURABLE SNOWFALL
                                    ON RECORD AT HARRISON.

OTHER NOTEWORTHY PHENOMENA DURING THE YEAR
---------------------------------------------------------------------
JUN.  4TH - WINDS GUSTED TO 60 MPH AS A SEVERE THUNDERSTORM PASSED OVER
            THE HARRISON AREA. THIS WAS THE HIGHEST WIND GUST RECORDED
            SINCE JULY 20, 2000, THE 2ND HIGHEST WIND GUST ON RECORD FOR
            THE MONTH OF JUNE, AND THE 8TH HIGHEST OVERALL SINCE AIRPORT
            OBSERVATIONS BEGAN IN 1944.

JUN.  9TH - PRESSURE OF 29.43 SET AN ALL-TIME RECORD LOW PRESSURE FOR THE
            MONTH OF JUNE AT HARRISON, BREAKING THE PREVIOUS RECORD OF
            29.49 ON JUN. 14, 1998. THIS WAS AS THE REMNANTS OF TROPICAL
            STORM CRISTOBAL PASSED CLOSE BY.

JUN. 12TH - PRESSURE OF 30.33 SET AN ALL-TIME RECORD HIGH FOR THE MONTH OF
            JUNE. PREVIOUS RECORD WAS 30.27 ON JUNE 8, 1980.

AUG. 28TH - PRESSURE OF 29.63 SET AN ALL-TIME RECORD LOW PRESSURE FOR THE
            MONTH OF AUGUST. PREVIOUS RECORD WAS 29.65 ON AUG. 30, 2005.
            THIS WAS DUE TO REMNANTS OF HURRICANE LAURA PASSING THROUGH
            NORTHERN ARKANSAS.

JAN.  1ST-  NO 100-DEGREE DAYS. FROM JUNE 27, 2013 THROUGH DECEMBER 31, 2020,
DEC. 31ST   THIS IS THE ALL-TIME RECORD OF 2,744 DAYS (SO FAR). THE PREVIOUS
            RECORD WAS 2,481 DAYS FROM SEP. 17, 1956 TO JUL. 3, 1963.

$$

57