Climatological Report (Seasonal)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
000 CXUS51 KGYX 050057 CLSCON PWMCLSCON 000 TTAA00 GYX 020952 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 552 AM EDT FRI JUN 02 2023 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE SPRING SEASON, FROM 3/1/2023 TO 5/31/2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1868 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 98 05/22/1911 LOW -20 03/06/1869 HIGHEST 91 05/28 90 1 93 05/22 LOWEST 14 03/01 1 13 3 03/05 AVG. MAXIMUM 58.3 56.8 1.5 59.1 AVG. MINIMUM 34.2 33.6 0.6 35.0 MEAN 46.3 45.2 1.1 47.1 DAYS MAX >= 90 2 1.2 0.8 2 DAYS MAX <= 32 0 4.3 -4.3 4 DAYS MIN <= 32 39 45.9 -6.9 37 DAYS MIN <= 0 0 1.1 -1.1 0 PRECIPITATION (INCHES) RECORD MAXIMUM 18.14 1983 MINIMUM 3.61 1915 TOTALS 11.10 10.18 0.92 10.09 DAILY AVG. 0.12 0.11 0.01 0.11 DAYS >= .01 30 35.3 -5.3 31 DAYS >= .10 18 20.9 -2.9 23 DAYS >= .50 7 6.7 0.3 7 DAYS >= 1.00 2 1.8 0.2 1 GREATEST 24 HR. TOTAL 2.46 04/23 SNOWFALL (INCHES) RECORDS TOTAL 48.2 1956 TOTALS 20.4 16.1 4.3 7.9 SINCE 7/1 64.5 67.7 -3.2 44.6 SNOWDEPTH AVG. 4 DAYS >= TRACE 13 6.5 6.5 8 DAYS >= 1.0 3 3.6 -0.6 3 GREATEST SNOW DEPTH 17 03/15 24 HR TOTAL 10.0 03/14 DEGREE DAYS HEATING TOTAL 1707 1846 -139 1681 SINCE 7/1 6167 6909 -742 6396 COOLING TOTAL 9 23 -14 56 SINCE 1/1 9 22 -13 56 ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.3 HIGHEST WIND SPEED/DIRECTION 37/340 DATE 03/15 HIGHEST GUST SPEED/DIRECTION 57/350 DATE 03/15 SKY COVER AVERAGE SKY COVER 0.41 AVERAGE RH (PERCENT) 65 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 HEAVY RAIN 4 RAIN 9 LIGHT RAIN 30 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 2 SNOW 3 LIGHT SNOW 13 FOG 36 FOG W/VIS <= 1/4 MILE 10 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && THE SNOWY PATTERN THAT DEVELOPED TOWARDS THE END OF WINTER CONTINUED INTO THE THE FIRST WEEK OF SPRING IN THE CONCORD AREA. AS ONE SYSTEM EXITED ON MARCH 1ST, ANOTHER SYSTEM CROSSED ON MARCH 2ND BRINGING LIGHT SNOW. A MORE SIGNIFICANT LOW PRESSURE SYSTEM TRACKED ALONG THE SOUTHERN NEW ENGLAND COASTLINE MARCH 4TH THAT BROUGHT 7.5 INCHES OF SNOW. QUIET WEATHER FOLLOWED UNTIL A STRONG LOW PRESSURE SYSTEM IMPACTED NEW ENGLAND MARCH 13TH INTO THE MORNING OF MARCH 15TH. THIS SYSTEM BROUGHT SIGNIFICANT SNOWFALL TO INTERIOR NEW ENGLAND WHILE THE CONCORD AREA RECEIVED 10.0 INCHES FROM THIS SYSTEM, AND WOULD BE THE GREATEST SNOWFALL OF THE SPRING SEASON. RELATIVELY QUIET WEATHER FOLLOWED WITH THE LAST OF THE WINTER SNOWPACK MELTING OUT BY THE MORNING OF APRIL 6TH. RELATIVELY QUIET WEATHER CONTINUED THROUGH THE FIRST HALF OF APRIL WITH A BRIEF WARM SPELL AROUND THE MIDDLE OF THE MONTH. THE CONCORD AREA ECLIPSED THE 70 DEGREE MARK FOR THE FIRST TIME OF THE SEASON ON THE 11TH WHEN THE HIGH TEMPERATURE REACHED 74 DEGREES. THEREAFTER, THE NAO TOOK A DIVE INTO NEGATIVE TERRITORY AS STRONG AND PERSISTENT OMEGA BLOCK FORMED OVER EASTERN NORTH AMERICA AND THE NORTH ATLANTIC. THIS BLOCKING PATTERN PERSISTED INTO THE FIRST WEEK OF MAY THAT LEAD TO MULTIPLE RAIN EVENTS, TEMPERATURES RUNNING BELOW NORMAL, AND WHEN IT WASN`T RAINING IT WAS OFTEN CLOUDY WITH DRIZZLE. THERE WERE ALSO DAYS WITH VERY LITTLE VARIATION BETWEEN THE HIGH AND LOW TEMPERATURE. ALSO DURING THIS PATTERN A SIGNIFICANT RAIN EVENT OCCURRED ON APRIL 30TH INTO MAY 1ST WHEN A STORM TOTAL OF 1.38 INCHES OF RAIN FELL IN CONCORD. ACROSS AREAS NORTH AND EAST OF CONCORD 2 TO 4 INCHES OF RAIN FELL RESULTING IN SOME FLOODING. THE OMEGA BLOCK THAT PLAGUED THE NORTHEAST FOR THE BETTER PART OF THREE WEEKS BROKE DOWN BY MAY 6TH. DRY WEATHER FOLLOWED THROUGH THE MIDDLE OF THE MONTH AND WITH THE EXCEPTION OF A FEW COOL DAYS AND SEASONABLY COLD NIGHTS, TEMPERATURES TRENDED ABOVE NORMAL. ONE OF THESE COLD NIGHTS OCCURRED ON MAY 17TH INTO THE MORNING OF THE 18TH WHEN THE TEMPERATURE FELL TO 25 DEGREES, WHICH WAS THE LAST FREEZE OF THE SEASON. ANOTHER HEAVY RAIN EVENT OCCURRED MAY 20TH WHEN A STORM TOTAL OF 0.89 INCHES OF RAIN FELL. A RIDGE OF HIGH PRESSURE THEN DOMINATED THE WEATHER PATTERN THE LAST WEEK OF MAY RESULTED IN FAIR WEATHER WITH SOME VERY WARM DAYS INTERMIXED WITH COOLER DAYS THANKS TO ONSHORE WINDS. THE AVERAGE TEMPERATURE FOR THE SPRING SEASON WAS 46.3 DEGREES, WHICH WAS 1.1 DEGREES ABOVE NORMAL. THE WARMEST SPRING ON RECORD WAS IN 2012 WHEN THE AVERAGE TEMPERATURE WAS 49.6 DEGREES. THE COLDEST WAS 38.7 DEGREES IN 1956. A TOTAL OF 11.10 INCHES OF PRECIPITATION FELL, WHICH WAS 0.92 INCHES ABOVE NORMAL. THE HEAVIEST PRECIPITATION FELL ON APRIL 23RD WHEN 2.46 INCHES OF PRECIPITATION FELL. THE WETTEST SPRING ON RECORD WAS IN 1983 WHEN 18.14 INCHES OF PRECIPITATION FELL. THE DRIEST WAS 3.61 INCHES IN 1915. A TOTAL OF 20.4 INCHES OF SNOW FELL, WHICH WAS 4.3 INCHES ABOVE NORMAL. THE HEAVIEST SNOW FELL ON MARCH 14TH WHEN 10.0 INCHES WAS MEASURED. THE SNOWIEST SPRING ON RECORD WAS IN 1956 WHEN 48.2 INCHES OF SNOW FELL. THE LEAST SNOWIEST WAS IN 2021 AND 2010 WHEN ONLY A TRACE OF SNOW WAS RECORDED. THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN SPRING 2023... DATE RECORD PREVIOUS APR 13 89 - WARMEST HIGH TEMPERATURE 88 IN 1945 APR 14 90 - WARMEST HIGH TEMPERATURE 84 IN 1870 APR 23 2.46 - GREATEST PRECIPITATION 1.55 IN 1977 $$ DS