Climatological Report (Annual)
Issued by NWS
Issued by NWS
023
CXUS54 KLZK 031352
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
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AVERAGE TEMPERATURES TEMPERATURE EXTREMES
MONTHHIGHLOW MONTHLY DFNMAX DATE(S)MINDATE(S)
---------------------------------------------------------------------
JAN 49.1 31.940.5+4.17115 16 20
FEB 50.9 31.341.1+0.681 2 11 14
MAR 64.5 44.054.3+5.59126 28 21
APR 67.0 44.655.8-2.292 8 28 18
MAY 73.3 53.663.4-2.48624, 2 36 9
JUN 85.3 63.974.6+0.993 5 56 24
JUL 89.4 69.179.2+0.89520 62 13
AUG 86.6 64.575.5-2.19325, 24 55 20, 5
SEP 79.8 59.469.6+0.489 5 46 20
OCT 68.4 45.156.7-2.286 7 32 30
NOV 63.7 40.852.3+3.878 4 25 30
DEC 51.5 31.041.2+3.17710 13 25
ANNUAL 69.13 48.2758.7+0.895 JUL. 20TH 11 FEB. 14TH
2020 RAINFALL, DEPARTURES, AND EXTREMES HARRISON, ARKANSAS
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MONTHRAINFALL DFNMAX (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
---------------------------------------------------------------------
MONTHSNOW DFN MAX (CALENDAR DAY)MAX (24 HOURS)HIGHEST DEPTH
---------------------------------------------------------------------
JAN T -4.2T (30TH, 24TH, 23RD) T (30TH, 24TH, 0
23RD)
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)
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MISCELLANEOUS DATA (FIRST/LAST DATES, ETC.)
---------------------------------------------------------------------
DAYS WITH MINIMUMS AT OR BELOW FREEZING 64FEWEST SINCE 2017
DAYS WITH MAXIMUMS AT OR ABOVE 90 DEGREES 30FEWEST 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
---------------------------------------------------------------------
DATENEW RECORDPREVIOUS RECORD
---------------------------------------------------------------------
(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.
$$
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