Climatological Report (Annual)
Issued by NWS Portland, OR

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000
CXUS56 KPQR 011149
CLAPDX

ANNUAL CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
349 AM PST SUN JAN 1 2017

...PORTLAND 2016 WEATHER IN REVIEW...

================================================================
2016 MONTHLY WEATHER RECAPS...

JANUARY...A RATHER UNEVENTFUL MONTH OF WEATHER. IT STARTED ON A
   CHILLY NOTE...WITH 1 TO 2 INCHES OF SNOW AND LIGHT FREEZING
   RAIN ACROSS THE METRO. BUT OVERALL...TEMPS WERE NEAR AVERAGE
   WITH SEVERAL DAYS IN THE UPPER 50S LATER IN THE MONTH.

FEBRUARY...WAS A VERY MILD FEBRUARY...WITH AVERAGE TEMPERATURE
   5.5 DEG ABOVE NORMAL. THIS IS THE WARMEST FEBRUARY ON RECORD
   AT PORTLAND AIRPORT WITH AVERAGE TEMP 49.3 (PREVIOUS RECORD
   WAS 49.2 DEG IN FEB 2015). NORMALLY...FEBRUARY SEES 2 DAYS
   WITH HIGH TEMPERATURES AT OR ABOVE 60 DEG. IN 2016...THERE
   WERE 9 DAYS (MOST ON RECORD IS 10 DAYS...SET BACK IN 1991).

MARCH...MARCH OPENED LIKE A LION...WITH WIND AND RAIN. SOUTH
   WINDS PEAKED AT 49 MPH AT THE AIRPORT ON THE 1ST. WINDS DID
   BRING DOWN A LOT OF TREE BRANCHES...WITH SOME DAMAGE REPORTED
   ACROSS THE METRO. ONE FATALITY OCCURRED IN GRESHAM WHEN A
   TREE FELL...CRUSHING A CAR WITH OCCUPANT INSIDE.

   THE TREND OF MILD CONDITIONS CONTINUE WITH TEMPERATURES ABOUT
   2 DEG ABOVE NORMAL. WHILE NOT AN EXCESSIVELY WET MONTH...DID
   HAVE PLENTY OF DAYS WITH MEASUREABLE RAINFALL (AT LEAST 0.01").
   THERE WERE 23 SUCH DAYS IN 2016 (NORMAL IS ABOUT 17 DAYS, AND
   RECORD MOST WAS 28 DAYS IN 2011). MARCH WENT OUT LIKE A LAMB
   WITH SUNNY WEATHER AND TEMPERATURES IN THE MIDDLE 70S.

APRIL...RATHER NICE MONTH OF WEATHER. TEMPERATURES WARMED IN
   THE 70S SEVERAL TIMES...WITH A 4-DAY STRETCH OF 80S FROM THE
   17TH TO 20TH. APRIL 18TH AND 19TH WERE THE 2ND AND 3RD WARMEST
   DAYS IN APRIL ON RECORD. IN FACT...THE 89 DEG ON THE 19TH WAS
   ONLY 1 DEG SHORT OF THE RECORD WARMEST WHICH WAS 90 DEG ON APR
   30 IN 1998. ALSO...THEN 4-DAY STRING OF 80+ DEG DAYS WAS THE
   LONGEST SUCH ON RECORD FOR APRIL SINCE RECORDS BEGAN IN 1941.
   2016 HAD 6 DAYS WITH TEMPERATURE AT LEAST 80 DEG...A NEW
   RECORD FOR APRIL (PREVIOUS RECORD WAS 5 DAY IN 2004). IT WAS
   THE WARMEST APRIL EVER WITH AVG TEMPERATURE OF 57.8 DEG
   (PREVIOUS RECORD 56.3 IN 2004).

   SHOWERS AND A FEW VERY STRONG THUNDERSTORMS ROLLED ACROSS THE
   METRO AREA FROM THE 20TH TO THE 22ND...WITH GUSTY WINDS AND
   SMALL HAIL. ON THE 21ST...A FEW THUNDERSTORMS BECAME SEVERE
   PRODUCING DAMAGING WINDS IN EASTERN PORTLAND AND GRESHAM.

MAY....THIS WAS ONE OF THE MORE PLEASANT MAYS IN RECENT YEARS
   GREAT FOR GARDENERS AND OUTDOOR ENTHUSIASTS. MANY DAYS WERE
   IN THE 70S...EVEN WELL INTO THE 80S AT TIMES. MAY 2016 TIED
   1997 AS THE 2ND WARMEST MAY ON RECORD. AFTERWARDS COOLER
   SHOWERY WEATHER BROUGHT TEMPERATURES BACK TO THE 60S FOR
   THE 14TH TO 27TH. ON THE 19TH...DID HAVE A FUNNEL CLOUD
   REPORTED NEAR THE GROTTO IN FAR NORTHEAST PORTLAND.

JUNE...JUNE STARTED RATHER WARM AND SUNNY UNDER STRONG HIGH
   PRESSURE. TEMPERATURES CLIMBED WELL INTO THE 80S AND 90S.
   ON THE 5TH...TEMPERATURES SPIKED AT 100 DEG. AFTER THE 7TH
   WEATHER MORE TYPICAL OF JUNE RETURNED...WITH FAIRLY AVERAGE
   TEMPERATURES AND OCCASIONAL RAIN.

JULY...RATHER BENIGN MONTH OF WEATHER...WITH NEAR NORMAL RAIN.
   FOR THE MOST PART...HIGH TEMPERATURES WERE A BIT COOLER THAN
   NORMAL FOR JULY...BUT WITH NIGHT TIME TEMPERATURES UP A BIT
   THE OVERALL AVERAGE TEMPERATURE WAS FAIRLY CLOSE TO NORMAL.
   SHOWERS ON THE 10TH DID PRODUCE A FEW SHORT-LIVED FUNNEL
   CLOUDS OVER CLACKAMAS AND WASHINGTON COUNTY.

AUGUST...RATHER NORMAL AUGUST...THOUGH WAS ON THE WARMER SIDE
   THANKS IN PART TO MILDER NIGHTS. AGAIN...WITH WEAKER ONSHORE
   FLOW...THE TYPICAL COOLING THAT OCCURS IN THE EVENING WAS NOT
   AS PRONOUNCED. MANY NIGHTS FAILED TO DROP BELOW 60 DEG. THE
   WARMEST DAYS WERE THE 18TH TO 20TH...WHEN TEMPERATURES ACROSS
   THE METRO TOPPED AT OR NEAR 100 DEG.

SEPTEMBER...THIS WAS A VERY PLEASANT MONTH WITH BENIGN WEATHER.
   DID HAVE NEAR NORMAL RAINFALL...BUT TEMPERATURES TRENDED A
   BIT COOLER THAN NORMAL. A FAIRLY STRONG FRONT ON THE 17TH
   BROUGHT PERIOD OF HEAVIER RAIN...WITH ABOUT 0.75 TO 1 INCH
   TO THE METRO AREA.

OCTOBER...IT WAS AN OCTOBER TO REMEMBER...IF YOU LIKE RAIN.
   RAIN FELL ON NEARLY EVERY DAY...WITH ONLY THE 10TH AND 11TH
   BEING THE ONLY DRY DAYS. THERE WERE 28 DAYS WITH MEASUREABLE
   RAINFALL (0.01 INCH OR MORE)...BREAKING PREVIOUS RECORD FOR
   OCTOBER OF 23 DAYS FROM 1947 AND 1950. OCTOBER 2016 FINISHED
   WITH 8.31 INCHES OF RAIN...JUST 0.10 INCH SHY OF RECORD SET
   BACK IN 1994.

   MAIN EVENT OF THE MONTH WAS THE IDES OF OCTOBER STORM...BUT
   THE STORM WAS NOT AS INTENSE AS FORECAST. STILL...SOUTHERLY
   WINDS GUSTED 45 TO 55 MPH ACROSS THE METRO AREA. THESE WINDS
   DID BRING DOWN PLENTY OF TREE BRANCHES...BUT MAIN PROBLEM
   WERE POWER OUTAGES AS TREES WERE STILL HEAVY WITH LEAVES.
   THIS RESULTED IN LIMBS GETTING TANGLED WITH POWER LINES.
   AS FAR AS AVERAGE WIND SPEED...THE FREQUENT FRONTS PROVIDED
   ENOUGH WIND TO MAKE OCTOBER 2016 TIE 1975 AS THE WINDIEST
   OCTOBER.

NOVEMBER...IT WAS A RATHER BENIGN MONTH...THOUGH A BIT ON THE
   MILD SIDE. SEVERAL FRONTS PUSHED ACROSS AREA...WITH THE
   STRONGEST ABOUT MID-MONTH. RAINFALL WITH THIS FRONT CREATED
   SOME MINOR URBAN FLOODING....MAINLY DUE TO POOR DRAINAGE IN
   LOW LYING AREAS AND CONTINUED LEAF-CLOGGED STORM DRAINS.

   WITH SOME MANY CLOUDY DAYS...TEMPERATURES RARELY DROPPED
   BELOW 40 DEG. THE NORMAL FIRST FROST DAY OF EARLY NOVEMBER
   CAME AND WENT...WITH NO FROST FOR THE METRO. THIS IS NOT
   UNUSUAL...IT HAS BEEN SEVERAL YEARS SINCE METRO HAD SEEN
   A NOVEMBER WITH NO FREEZING TEMPERATURES. THIS SAID...IT
   IS LIKELY THAT FROST OCCURRED IN OUTLYING AND RURAL AREAS
   AWAY FROM INNER PORTLAND...AS TEMPERATURES DID DROP TO
   LOWER AND MIDDLE 30S ON THE 17TH AND 18TH.

   IT WAS THE WARMEST NOVEMBER ON RECORD...WITH AN AVERAGE
   TEMPERATURE OF 52.3 DEG (PREVIOUS RECORD 51.7 IN 1995).

DECEMBER...TYPICAL DECEMBER WITH MIX OF COOL AND MILD DAYS.
   THE FIRST FREEZE OF THE 2016-17 SEASON OCCURRED ON 6TH AS
   OVERNIGHT LOW DROPPED TO 29 DEG. THIS ENDED THE LONGEST
   STRETCH BETWEEN THE LAST SPRING AND FIRST FALL FREEZE
   AKA THE GROWING SEASON AT 313 DAYS...BREAKING THE OLD
   RECORD LONGEST OF 296 DAYS SET IN 1983.

   RAIN AND SOME SNOW...AND EAST WINDS. A DUSTING OF SNOW
   OCCURRED ON THE 5TH...BUT HIGHER ELEVATIONS SAW 1 TO 2
   INCHES OF SNOW. ANOTHER ROUND OF SNOW AND FREEZING RAIN
   ARRIVED ON THE 8TH INTO THE 9TH...WITH GENERALLY 1 TO 2
   INCHES OF SNOW FOR MANY AREAS. THEN OCCASIONAL FREEZING
   RAIN ON THE 9TH INTO THE 10TH KEPT CONDITIONS ICY WITH
   SOME LIGHT TREE DAMAGE AND SPOTTY POWER OUTAGES.

   9TH...THE TEMPERATURE RISE FROM MORNING LOW TO AFTERNOON
   HIGH WAS 1 DEG. THIS IS THE LOWEST SUCH CHANGE IN A DEC
   AND ONLY THE SECOND TIME AT ANYTIME IN THE YEAR SINCE
   1941 (OTHER TIME WAS ON 16 JAN 1960).

   ANOTHER ROUND OF SNOW HIT THE REGION LATE ON THE 14TH
   BROUGHT A MAJOR HEADACHE TO COMMUTERS...AS ROADS QUICKLY
   JAMMED AND RESULTED IN 3 TO 5 HOUR LONG COMMUTES IN THE
   EVENING. GENERALLY ABOUT 2 TO 3 INCHES OF SNOW FELL IN
   THE METRO AREA...WITH 4 TO 5 INCHES IN SPOTS ACROSS PARTS
   OF FAR SOUTHEAST METRO AND TO NORTHWEST OF THE METRO. THEN
   OCCASIONAL FREEZING RAIN ON THE 15TH AND 16TH KEPT A GOOD
   PART OF AREA FROM THE WEST HILLS TO THE NORTH AND EAST
   UNDER ICY CONDITIONS. FREEZING RAIN ACCUMULATIONS OF 0.40
   TO 0.75 INCH WERE COMMON IN THIS AREA...WITH MANY TREES
   DAMAGED AND POWERLINES DOWNED. THE WORST CONDITIONS WERE
   BETWEEN DIVISION AND PRESCOTT...FROM THE WILLAMETTE RIVER
   EASTWARD. COOL WITH OCCASIONAL FLURRIES CONTINUED THROUGH
   THE 18TH.

   MILDER WEATHER RETURNED BEHIND A STRONG FRONT ON THE 19TH.
   THIS SYSTEM BROUGHT 1.00 TO 1.50 INCHES OF RAIN...WASHING
   AWAY ALL THE SNOW AND ICE THAT WAS STILL ON THE GROUND.
   BUT COOLER AIR RETURNED ON THE 31ST...WITH SNOW SHOWERS
   ...ALONG WITH SOME MINOR ACCUMULATION ON HIGHER HILLS.

==============================================================
NEW RECORDS SET IN 2016 (PREVIOUS RECORD IN PARENTHESES)
        + INDICATES MOST RECENT OF MULTIPLE OCCURRENCES

JANUARY...
  28TH   TIED. DAILY HIGH TEMP               59  (   59 /1992)

FEBRUARY...
   7TH   TIED. DAILY HIGH TEMP               62  (   62 /1996)
         NEW.  WARMEST FEBUARY (AVG TEMP)  49.3  ( 49.2 /2015)

MARCH...       NO NEW RECORDS SET.

APRIL...
   7TH   NEW.  DAILY HIGH TEMP               85  (   79 /1996)
   8TH   NEW.  DAILY HIGH TEMP               83  (   74 /1996)
  17TH   NEW.  DAILY HIGH TEMP               81  (   78 /1983)
  18TH   NEW.  DAILY HIGH TEMP               87  (   80 /1962)
  19TH   NEW.  DAILY HIGH TEMP               87  (   80 /1956)
         NEW.  MOST DAYS AT LEAST 80 DEG.     6  (    5 /2004)
         NEW.  MOST DAYS AT LEAST 70 DEG.    13  (   12 /1977)
         NEW.  WARMEST APRIL (AVG TEMP)    57.8  ( 56.3 /2004)

MAY...   NO NEW RECORDS SET.

JUNE...
   4TH   NEW.  DAILY HIGH TEMP               98  (   91 /2003)
   5TH   NEW.  DAILY HIGH TEMP              100  (   96 /2003)

JULY..         NO NEW RECORDS SET.

AUGUST...
   8TH   TIED. DAILY PRECIPITATION         0.08" ( 0.08"/1985)
  18TH   NEW.  DAILY HIGH TEMP               99  (   96 /2015)
  19TH   NEW.  DAILY HIGH TEMP              100  (   97 /2015+)
  20TH   NEW.  DAILY HIGH TEMP              100  (   96 /2011)
  25TH   NEW.  DAILY HIGH TEMP               95  (   94 /2010)

SEPTEMBER...   NO NEW RECORDS SET.

OCTOBER...
  13TH   NEW.  DAILY PRECIPITATION         1.99" ( 0.43"/2000)
         NEW.  MOST DAYS WITH 0.01+" RAIN    28  (   27 /1950+)
         TIED. WINDIEST (AVG WIND SPEED)  8.4 MPH( 8.4 /1975)

NOVEMBER...
   3RD   TIED. DAILY HIGH TEMP               69  (   69 /1980+)
   8TH   TIED. DAILY HIGH TEMP               68  (   64 /1976+)
   9TH   NEW.  DAILY HIGH TEMP               66  (   65 /1989+)
  10TH   NEW.  DAILY HIGH TEMP               68  (   65 /1989)
         NEW.  WARMEST NOVEMBER (AVG TEMP) 52.3  ( 51.7 /1995)

DECEMBER...
   9TH   NEW.  SMALLEST TEMP CLIMB IN DEC  1 DEG (LO 33/HI 34)
  14TH   NEW.  DAILY SNOWFALL                2.0"(  1.0"/2008)

=============================================================
2016 PORTLAND MONTHLY TEMPERATURE AND PRECIPITATION RANKINGS

RANKINGS ARE 1 TO 77...WHERE 1 IS THE WARMEST OR WETTEST
               AND 77 IS THE DRIEST OR COLDEST ON RECORD.

        JA  FE  MA  AP  MA  JU  JL  AU  SE  OC  NO  DE  2016
MAX T   27   4  21   1   5  10  45   6  43  53   2  71     4
MIN T   11   2   3   1   1   7  12  13  34   3   1  71     2
AVG T   17   1   9   1   3   9  30   6  44  12   1  71     2
PRECIP  18  29  18  48  48  42  26  62  28   2  19  52    13

============================================================
2016 PORTLAND AIRPORT TEMPERATURE DATA
     + BY DATE INDICATES LAST OF SEVERAL OCCURRENCES LISTED

      |--- AVERAGES ----| MEAN T DEPART| EXTREME TEMPS & DATE|
MONTH |HIGHS LOWS   MEAN|  FROM NORMAL | HIGHEST      LOWEST |
--------------------------------------------------------------
JAN     47.2  38.0   42.6   +1.2 DEG     59 /28TH+   28 / 3RD+
FEB     56.4  42.2   49.3   +5.5 DEG     64 /25TH    32 / 2ND
MAR     57.6  43.0   50.3   +2.1 DEG     75 /31ST    33 /17TH
APR     68.5  47.0   57.8   +5.5 DEG     89 /19TH    39 / 6TH
MAY     72.3  52.1   62.2   +3.9 DEG     89 /13TH    46 / 1ST
JUN     76.8  55.4   66.1   +2.5 DEG    100 / 5TH    48 /19TH+
JUL     79.1  59.1   69.1   -0.1 DEG     94 /29TH+   54 /15TH+
AUG     84.5  59.3   71.9   +2.4 DEG    100 /20TH+   53 /22ND+
SEP     74.1  52.5   63.3   -1.2 DEG     89 /26TH    45 /30TH
OCT     62.3  50.5   56.4   +1.5 DEG     70 / 8TH    41 /12TH
NOV     58.0  46.6   52.3   +5.7 DEG     69 / 4TH    39 /18TH+
DEC     42.3  31.9   37.1   -3.3 DEG     52 /20TH    20 /22ND

2016    64.9  48.1   56.5   +2.0 DEG    100 /JUL 20  20 /DEC 22
NORMAL  63.2  45.7   54.5                    JUL 19
                                             MAY  5

DAYS IN 2016 WITH TEMPERATURE OF...
       |------ MAXIMUM TEMP --------||------ MINIMUM TEMP ---|
       <=32  60+  70+  80+  90+ 100+  <=20  <=32   60+   70+
--------------------------------------------------------------
JAN      1    0    0    0    0    0      0     8    0     0
FEB      0    9    0    0    0    0      0     1    0     0
MAR      0    8    2    0    0    0      0     0    0     0
APR      0   27   13    6    0    0      0     0    0     0
MAY      0   27   18    9    0    0      0     0    0     0
JUN      0   30   20   11    3    1      0     0    4     0
JUL      0   31   31   13    2    0      0     0   15     0
AUG      0   31   31   23    9    2      0     0   13     0
SEP      0   30   24    9    0    0      0     0    1     0
OCT      0   27    1    0    0    0      0     0    0     0
NOV      0   12    0    0    0    0      0     0    0     0
DEC      0    0    0    0    0    0      1    19    0     0

2016     1  232  140   71   14    3      1    28   33     0
NORMAL   2  197  120   54   12    1      2    30   21     0

FIRST/LAST OCCURRENCES OF...        IN 2016         NORMAL
  LAST 32 DEG OR COLDER IN SPRING    FEB  2        (MAR 19)
  FIRST 70+ DEG OF THE YEAR          MAR 30        (MAR 30)
  FIRST 80+ DEG OF THE YEAR          APR  7        (MAY 10)
  FIRST 90+ DEG OF THE YEAR          JUN  4        (JUN 16)

  LAST 90+ DEG OF THE YEAR           AUG 26        (SEP  8)
  LAST 80+ DEG OF THE YEAR           SEP 26        (SEP 29)
  LAST 70+ DEG OF THE YEAR           OCT  8        (OCT 18)
  FIRST 32 DEG OR COLDER IN FALL     DEC  6        (NOV 15)

==============================================================
2016 PORTLAND AIRPORT RAINFALL DATA...

       TOTAL  DEPARTURE  DAYS WITH AT LEAST...  GREATEST IN
MONTH   RAIN  FM NORMAL  0.01 0.10 0.50 1.00   24HRS & DATE
---------------------------------------------------------------
JAN     7.23    +2.35      23   19    6    0    1.34 JAN 12-13
FEB     4.10    +0.44      18   15    0    0    0.65 FEB 3-4
MAR     4.73    +1.05      23   15    2    0    0.71 MAR 12-13
APR     1.96    -0.77      12    5    1    0    0.81 APR 13-14
MAY     1.72    -0.75       7    5    1    0    0.65 MAY 14-15
JUN     1.42    -0.28      10    5    1    0    0.54 JUN 23-24
JUL     0.66    +0.01       6    2    0    0    0.30 JUL 22
AUG     0.09    -0.58       2    0    0    0    0.49 AUG 8-9
SEP     1.69    +0.22       6    3    2    0    0.88 SEP 17
OCT     8.31    +5.31      28   21    4    1    2.01 OCT 12-13
NOV     6.83    +1.20      20   13    4    3    2.13 NOV 24-25
DEC     4.61    -0.88      21   12    3    0    1.29 DEC 19-20

  2016  43.35   +7.32     176  115   24    4    2.13 NOV 24-25
NORMAL  36.03             155   91   19    4

TOTAL SNOWFALL...         4.3 INCHES      (NORMAL 4.3 INCHES)

PORTLAND WATER YEAR 2015-16 (1 OCT 2015 THROUGH 30 SEP 2016)
      47.02 INCHES       10.99 INCHES ABOVE NORMAL

============================================================
2016 PORTLAND AIRPORT WIND AND PRESSURE DATA...

       AVERAGE SPEED (MPH)    STRONGEST WIND GUST
    2016 (NORMAL)       DIRECTION   SPEED   DATE
-------------------------------------------------------------
JAN     10.2    9.3         EAST        45 MPH  JAN  1
FEB      7.8    8.7         SOUTHWEST   40 MPH  FEB 28
MAR      9.4    7.7         WEST        49 MPH  MAR  1
APR      5.6    7.1         WEST        34 MPH  APR 21
MAY      6.2    6.7         NORTHWEST   31 MPH  MAY  7
JUN      6.6    7.0         SOUTH       32 MPH  JUN 10
JUL      6.5    7.2         WEST        28 MPH  JUL 26
AUG      6.4    6.8         NORTHWEST   28 MPH  AUG  4
SEP      4.9    6.2         SOUTH       27 MPH  SEP 23
OCT      8.4    6.3         SOUTHWEST   53 MPH  OCT 15
NOV      8.6    8.0         SOUTH       41 MPH  NOV 24
DEC      7.1    9.3 EAST        49 MPH  DEC  8

2016     7.3    7.5SOUTH      58 MPH  MAR 15

HIGHEST PRESSURE IN 2016...30.59 INCHES    APR  5
LOWEST PRESSURE IN 2016...29.19 INCHES    FEB 17
                                                MAR  5
============================================================
2016 COLUMBIA AND WILLAMETTE RIVER EXTREMES

COLUMBIA @ VANCOUVER/I-5 BRIDGE
          HIGHEST   11.0 FT     12 MAR  AT 9 AM
          LOWEST    -0.5 FT     10 SEP  AT 6 PM

WILLAMETTE @ PORTLAND (MORRISON ST BRIDGE)
          HIGHEST   11.1 FT     12 MAR  AT 8 AM
          LOWEST    -0.3 FT     10 SEP  AT 8 AM

============================================================
PORTLAND AIRPORT CLIMATE PERIOD OF RECORDS... 1940 TO 2016
PORTLAND AIRPORT CLIMATE NORMALS BASED ON...  1981 TO 2010
============================================================

DATA COMPILED BY ROCKEY
NATIONAL WEATHER SERVICE PORTLAND OREGON

ONLINE AT:     WEATHER.GOV/PORTLAND


$$



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