Climatological Report (Annual)
Issued by NWS
Issued by NWS
000 CXUS54 KLZK 031942 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 --------------------------------------------------------------------- MONTHSNOW DFN MAX (CALENDAR DAY)MAX (24 HOURS)HIGHEST DEPTH --------------------------------------------------------------------- JAN T -4.2 T (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) --------------------------------------------------------------------- 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 --------------------------------------------------------------------- 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. $$ 57