Climatological Report (Seasonal)
Issued by NWS Portland, ME

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CLSCON

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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


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