National Weather Service United States Department of Commerce

Severe Thunderstorms Possible for the Great Lakes into Ohio Valley; Heavy to Excessive Rainfall Over the Southern Plains

Severe thunderstorms will race along a cold front from the Upper Mississippi Valley into the Great Lakes and Ohio Valley with the main threat being damaging winds. The tail end of this front will possibly produce heavy to excessive rainfall across the southern Plains into the Lower Mississippi Valley through Saturday. Finally, Major-to-record river flooding continues across the Carolinas. Read More >

ANNUAL CLIMATE REPORT
 NATIONAL WEATHER SERVICE PORTLAND OR
 151 PM PST SUN DEC 31 2017
 
 ...EUGENE 2017 WEATHER IN REVIEW...
 
 ================================================================
 2017 MONTHLY WEATHER HIGHLIGHTS...
 
 JANUARY...RATHER CHILLY AND SHOWERY FOR FIRST TWO WEEKS, WITH 
     SNOW SHOWERS FALLING ON THE HILLS AROUND TOWN. ON THE 4TH
     2 TO 5 INCHES OF SNOW FELL ON THE HIGHER TERRAIN AROUND 
     EUGENE, WITH JACKPOT BEING 5.0 TO 5.5 INCHES FROM PLEASANT 
     HILL THROUGH CRESWELL. DRY BUT COLD ON 5TH TO 6TH, THEN 
     CAME A MAJOR WINTER STORM. ON THE 7TH, HEAVY SNOW FELL WITH
     5 TO 8 INCHES REPORTED ACROSS THE EUGENE/SPRINGFIELD AND
     SURROUNDING AREAS. BUT THE SNOW TRANSITIONED TO FREEZING
     RAIN, WITH MANY AREAS GETTING ICE ACCUMULATIONS OF 0.50 TO
     1.25 INCHES. THIS CAUSED SIGNIFICANT DAMAGE TO TREES AND 
     POWER LINES, WITH MANY WITHOUT POWER FOR SEVERAL DAYS. FOR 
     FIRST TIME IN 30 YEARS, OREGON DEPARTMENT OF TRANSPORTATION
     ORDERED MANDATORY CHAINS ON ALL VEHICLES TRAVELING BETWEEN
     WILSONVILLE AND EUGENE ON INTERSTATE 5.
  
     A LITTLE MORE LIGHT FREEZING RAIN FELL ON THE AREA ON THE
     13TH AND 14TH, BUT WAS NOT AS DEVASTATING AS EARLIER STORM.
 
     MILDER AIR RETURNED ON THE 16TH AND 17TH, WITH TEMPERATURES
     WARMING BACK INTO THE 50S DURING THE DAYS. STRONG FRONT ON
     THE 18TH BROUGHT RAIN AND GUSTY SOUTH WINDS. AFTERWARDS, 
     WEATHER BECAME MORE TRANQUIL. WHILE NOT THE RECORD COLDEST
     THIS WAS THE COLDEST JANUARY SINCE 1993. 
 
 FEBRUARY...MILD WEATHER CONTINUED, WITH TYPICAL FEB EATHER. 
      SEVERAL FRONTS BROUGHT WIND AND HEAVY RAIN TO THE REGION, 
      MAINLY ON THE 4TH/5TH, 15TH/16TH, AND ANOTHER 20TH/21ST. 
      NONE OF THE LOCAL RIVERS FLOODED, BUT THERE WAS AREAS 
      WITH PONDING OF WATER AND MINOR URBAN FLOODING IN AREAS
      OF POOR DRAINAGE. ON THE 20TH, AREAS AROUND DEXTER HAD
      SEVERAL TREES BLOWN DOWN ONTO HWY 58. 
 
 MARCH...RATHER NORMAL MARCH, WITH NO SIGNIFICANT EVENTS.
 
 APRIL...A LOT OF THE DAYS IN APRIL HAD RAIN, 23 DAYS TO BE
      EXACT. THIS TIED 1948 AND 1893 AS THE 3RD MOST SUCH DAYS
      IN APRIL. RECORD MOST IS 25 DAYS, SET IN 2003 AND 1993
      (NORMAL IS 15 DAYS). 
 
      A STRONG FRONT PUSHED ACROSS THE REGION ON THE 7TH, WITH
      SOUTHERLY WINDS GUSTING 40 TO 50 MPH. WINDS MAY HAVE 
      CONTRIBUTED TO FOUR FATALITIES WITH A SMALL PLANE THAT 
      CRASHED WHILE ON APPROACH TO MAHLON SWEET FIELD.  WINDS
      DAMAGED TREES AND BROUGHT DOWN POWER LINES. AT ONE POINT
      I-5 NEAR ALBANY WAS CLOSED FOR A FEW HOURS IN THE MORNING
      DUE TO POWER LINES DOWN ON THE INTERSTATE. 
 
 MAY...TO THE DELIGHT OF GARDENERS, AND THOSE TIRED OF THE WET
      WINTER, MAY BROUGHT WARM DAYS AND QUITE A FEW DRY DAYS.
      RAINFALL WAS MORE THAN HALF OF NORMAL, WITH MOST OF THAT
      FALLING BETWEEN THE 11TH AND 16TH. LITTLE IF ANY RAIN 
      FELL AFTER THE 17TH OF THE MONTH. 
 
 JUNE...A QUITE PLEASANT, BUT UNEVENTFUL JUNE. MAJORITY OF THE
      RAIN FOR THE MONTH FELL BETWEEN THE 7TH AND 10TH. SHOWERS
      ON THE 10TH AND 11TH DID PRODUCE SOME EXCITEMENT, AS A
      FUNNEL CLOUD WAS REPORTED TO EAST OF CORVALLIS. 
 
      AFTER THE 16TH, LITTLE IF ANY RAIN FELL. WITH THIS DRY 
      WEATHER, TEMPERATURES WARMED INTO THE 80S AND 90S, WITH
      WARMEST OCCURRING ON THE 24TH WITH 96 DEG. 
 
 JULY...GREAT SUMMER MONTH. WARM DAYS, WITH 25 DAYS OF HIGHS
      OF AT LEAST 80 DEG. NIGHTS WERE COOLISH, WITH LOWS
      45 TO 55 DEG. AND DRY, WITH 0.02 INCH OF RAIN. 
 
 AUGUST...NEARLY A CARBON COPY OF JULY, AS WAS WARM AND DRY. 
      RAIN RECORDED ON ONLY 1 DAY, WHEN 0.14 INCH FELL ON 13TH.
      DAILY BREEZY NORTH WINDS, COMBINED WITH THE WARM AND DRY 
      CONDITIONS OF JULY AND AUGUST, BROUGHT AN INCREASE OF 
      ROADSIDE AND BRUSH FIRES. AFTER RECORD HEAT TO START THE
      MONTH (102 DEG ON 2ND AND 3RD), THUNDERSTORMS PUSHED UP
      THE CASCADES. LIGHTNING STARTED MANY FIRES, SOME OF 
      WHICH BECAME QUITE LARGE IN THE WARM AND DRY CONDITIONS.
      THE LARGE FIRES INCLUDE THE JONES FIRE NEAR LOWELL, REBEL
      FIRE ON THE SOUTH FORK OF THE MCKENZIE RIVER, AND THE
      WHITEWATER FIRE NEAR MARION FORKS, BUT OTHER FIRES WERE
      OCCURING IN CENTRAL OREGON BACK ACROSS SOUTHWEST OREGON
      AND INTO NORTHERN CALIF. WINDS ALOFT OFTEN BROUGHT SMOKE
      TO THE EUGENE/SPRINGFIELD AREA, CREATING UNHEALTHY AIR 
      QUALITY AT TIMES. 
 
 SEPTEMBER...DRY AND WARM CONDITIONS CONTINUED FOR FIRST PART
      OF SEPTEMBER. HEAVY THUNDERSTORMS ROLLED ACROSS THE 
      CASCADES ON THE 7TH. STORMS PRODUCED GOLFBALL-SIZED HAIL
      NEAR OAKRIDGE, WITH QUARTER-SIZED HAIL NEAR BLUE RIVER. 
 
      MAIN WEATHER STORY FOCUSED ON THE SMOKE AND WILDFIRES
      OF THE CASCADES, SUCH AS JONES AND REBEL. SMOKE BECAME
      A DAILY PART OF LIFE FOR THROUGH MID-MONTH, THOUGH THE
      WORST SEEMS TO BE FIRST 6 DAYS OF THE MONTH, AS LIGHT
      SOUTHEAST WINDS ALLOWED HEAVY SMOKE TO DRIFT OVER FROM
      THE FIRES OUT AND OVER THE REGION. SOUTH WINDS HIGHER
      UP IN THE ATMOSPHERE BROUGHT SMOKE FROM NORTHERN CALIF
      AND SOUTHWEST OREGON OVER THE REGION AT TIMES AS WELL.
   
      A BREAK IN THE HEAT BROUGHT HIGHS IN THE 60S ALONG WITH
      ONSHORE FLOW BETWEEN THE 17TH AND 23RD. THE ONSHORE 
      FLOW PUSHED THE SMOKE ALOFT BACK TO THE EAST, GIVING
      THE LOCAL AREA A RESPITE FROM THE SMOKE.
 
 OCTOBER...AND JUST LIKE THAT, SUMMER WAS OVER. AFTER SEEING
      TEMPERATURES IN THE LOWER TO MID 70S IN FIRST WEEK, IT
      WAS 50S AND 60S AFTERWARDS. RATHER ROBUST FRONT ARRIVED
      ON 21ST INTO 22ND, PRODUCING HEAVY RAIN. LIKE MOST RAIN
      IN OCTOBER, FALLEN LEAVES AND CLOGGED DRAINS PRODUCE 
      AREAS OF URBAN FLOODING AND PONDING OF WATER. OVERALL,
      MILD DAYS AND COOL NIGHTS ALLOWED FOR CURING OF TREES,
      PROVIDING SOME SPECTACULAR DISPLAYS OF AUTUMN COLOR. 
      IT WAS ALSO THE FIRST DRY HALLOWEEN SINCE 2006. 
 
 NOVEMBER...TEMPERATURES/PRECIPITATION WERE NORMAL. STRONG 
      WINDS GUSTING 40 TO 45 MPH ACCOMPANIED A COLD FRONT
      ON THE 13TH. THESE WINDS PRODUCED SOME TREE DAMAGE AND
      SPOTTY POWER OUTAGES. 
 
      LIGHT WINDS AT NIGHT, WITH CLEAR SKIES, ALLOWED FOR MANY
      NIGHTS WITH HEAVY FOG, ESPECIALLY DURING THE LAST WEEK.
      WARM AIR MASS OVER THE REGION FROM 20TH TO 22ND PUSHED
      TEMPERATURES INTO THE 60S, WARMEST BEING 67 DEG ON 21ST.
      
 DECEMBER...STRONG HIGH PRESSURE OVER THE WESTERN USA KEPT
      THE AREA MOSTLY DRY FROM 4TH THROUGH THE 18TH. BUT, 
      THIS ALSO FORMED A LOT OF NIGHTTIME AND MORNING FOG, 
      WITH DENSE FOG REPORTED ON NEARLY EVERY DAY FOR FIRST
      3 WEEKS OF DECEMBER. THE HIGH PRESSURE MINIMIZED THE
      MIXING OF THE AIR MASS, LEADING TO MULTIPLE DAYS WITH
      POOR TO MODERATE AIR QUALITY. A STRONG FRONT BROUGHT
      AN INCH OF RAIN ON THE 19TH AND 20TH. BETWEEN THE 23RD
      AND 25TH, ARCTIC AIR SPILLED INTO WESTERN OREGON, WITH
      SLEET AND LIGHT FREEZING RAIN ON THE 24TH. THEN MILDER
      AIR RETURNED ON 28TH, WITH RAIN FOR A FEW DAYS. EVEN 
      WITH THE RETURN OF RAIN, DECEMBER 2017 FINISHED AS THE
      5TH DRIEST DECEMBER ON RECORD. 
 
 ==============================================================
 NEW RECORDS SET IN 2017      (PREVIOUS RECORD IN PARENTHESES)
               + INDICATES MOST RECENT OF MULTIPLE OCCURRENCES
     
 JANUARY... 
    5TH   NEW.  DAILY LOW TEMP                13  (   15 /1924)
 
 FEBRUARY...
    5TH   NEW.  DAILY MAX PRECIPITATION     1.24" ( 0.98"/1919)
   16TH   NEW.  DAILY MAX PRECIPITATION     1.69" ( 1.45"/1970)
 
 MARCH... NO NEW RECORDS SET. 
 
 APRIL... NO NEW RECORDS SET. 
 
 MAY...
    4TH   NEW.  DAILY HIGH TEMP               85  (   83 /2013)
 
 JUNE...  NO NEW RECORDS SET. 
 
 JULY...  NO NEW RECORDS SET. 
 
 AUGUST...
    2ND   NEW.  DAILY HIGH TEMP              102  (   99 /1939)
    3RD   NEW.  DAILY HIGH TEMP              102  (  100 /1993+)
   28TH   TIED. DAILY HIGH TEMP               97  (   97 /1931+)
 
 SEPTEMBER...
    3RD   TIED. DAILY HIGH TEMP               96  (   96 /1949)
 
 OCTOBER... 
    5TH   TIED. DAILY LOW TEMP                32  (   32 /2012)
 
 NOVEMBER...
   21ST   NEW.  DAILY HIGH TEMP               67  (   63 /1933+)
 
 DECEMBER... NO NEW RECORDS SET. 
 
 ===============================================================
 2017 EUGENE MONTHLY TEMPERATURE AND PRECIPITATION RANKINGS 
 
 THIS SHOWS WHERE A MONTH/YEAR RANKS IN EUGENES WEATHER RECORD,
 1892 TO 2017. RANKINGS ONLY APPLY TO ALL OF THE SAME MONTH,
 OR IN OTHER WORDS, WHERE JAN 2017 COMPARES TO ALL OTHER JAN.
  
 RANKINGS ARE 1 TO 126...WHERE 1 IS THE WARMEST OR WETTEST
                AND 126 IS THE DRIEST OR COLDEST ON RECORD.
 
        JAN FEB MAR APR MAR JUN JUL AUG SEP OCT NOV DEC   2017
 AVG T  112  10  22   5  15  14  51   8  58  17   2 112     77
 PRECIP  88  13  33  45  96  87  53 103  91   2  90 122     61
 
 MAX T  107   6  35   5  17  12  72   3  45  86   3 102     68
 MIN T  111  17  13   6  21  39  30  53  86   1   4 116     77
 
 ===============================================================
 2017 EUGENE 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     42.7  29.4   36.0   -4.7 DEG     55 /18TH    13 / 6TH+
 FEB     49.6  36.5   43.0   +0.1 DEG     61 /15TH    28 /24TH
 MAR     54.9  40.8   47.9   +1.2 DEG     65 /21ST    33 /31ST
 APR     59.1  40.9   50.0   -0.2 DEG     71 /29TH    33 /15TH
 MAY     69.2  43.9   56.6   +1.3 DEG     86 /23RD    35 /18TH
 JUN     74.3  49.1   61.7   +1.3 DEG     96 /24TH    38 / 5TH
 JUL     84.7  50.2   67.5   +0.7 DEG     94 /31ST    45 /14TH
 AUG     86.8  52.9   69.9   +3.0 DEG    102 / 3RD+   43 /15TH
 SEP     77.2  49.6   63.4   +1.5 DEG     96 / 3RD    40 /24TH 
 OCT     63.4  39.4   51.4   -1.3 DEG     76 / 6TH    27 /31ST 
 NOV     52.5  38.1   45.3   +0.4 DEG     67 /21ST    26 /19TH 
 DEC     44.4  29.2   36.8   -2.9 DEG     56 /29TH    20 /12TH 
 
 2017    63.3  41.7   52.5   +0.0 DEG    102 /AUG 2   13 /JAN  6
 NORMAL  63.3  41.6   52.5                    AUG 3    
 
 DAYS WITH TEMPERATURES IN 2017 WHERE...
        |------ MAXIMUM TEMP --------||------ MINIMUM TEMP ---|
        <=32  60+  70+  80+  90+ 100+  <=20  <=32   60+   70+    
 --------------------------------------------------------------
 JAN      3    0    0    0    0    0      2    19    0     0      
 FEB      0    2    0    0    0    0      0     9    0     0  
 MAR      0    8    1    0    0    0      0     0    0     0  
 APR      0   12   11    0    0    0      0     0    0     0  
 MAY      0   24   17    5    0    0      0     0    0     0
 JUN      0   29   19   10    2    0      0     0    0     0     
 JUL      0   31   31   25    5    0      0     0    0     0  
 AUG      0   31   30   27   10    2      0     0    3     0  
 SEP      0   30   22   14    6    0      0     0    4     0
 OCT      0   22    4    0    0    0      0     5    0     0
 NOV      0    5    0    0    0    0      0     5    0     0     
 DEC      0    0    0    0    0    0      0    22    0     0  
 
 2017     3  194  124   81   23    2      2    60    7     0
 NORMAL   2  195  123   58   14    1      3    51    2     0
 
 FIRST/LAST OCCURRENCES OF...        IN 2017      NORMAL
   LAST 32 DEG OR COLDER IN SPRING    FEB 25     (APR 20)
   FIRST 70+ DEG OF THE YEAR          APR 29     (MAR 30)
   FIRST 80+ DEG OF THE YEAR          MAY 22     (MAY 15)
   FIRST 90+ DEG OF THE YEAR          JUN 24     (JUN 25)
 
   LAST 90+ DEG OF THE YEAR           SEP 12     (SEP 11)
   LAST 80+ DEG OF THE YEAR           SEP 28     (SEP 29)
   LAST 70+ DEG OF THE YEAR           OCT  6     (OCT 21)
   FIRST 32 DEG OR COLDER IN FALL     OCT  5     (OCT 20)
 
 ==============================================================
 2017 EUGENE 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     4.05    -2.82      15    9    3    0    0.92 JAN  8-9
 FEB     9.33    +3.90      23   16    8    3    2.08 FEB 15-16
 MAR     5.82    +0.83      22   16    3    0    0.87 MAR 23-24
 APR     3.65    +0.32      23   12    1    0    0.71 APR 17-18
 MAY     1.22    -1.52       7    5    0    0    0.37 MAY 11
 JUN     1.38    -0.12       5    4    1    0    0.62 JUN 10
 JUL     0.02    -0.52       2    0    0    0    0.01 JUL 20+
 AUG     0.14    -0.47       1    1    0    0    0.14 AUG 13
 SEP     1.05    -0.24       7    4    0    0    0.52 SEP 19-20
 OCT     4.08    +0.83      10    8    3    1    1.65 OCT 21-22
 NOV     7.46    -0.26      20   17    6    1    1.38 NOV 15
 DEC     2.47    -5.36      11    6    1    0    0.86 DEC 19
 
   2017  40.14   -5.43     146   98   26    5    2.08 FEB 15-16
 NORMAL  46.10             144   93   30   10    
 
 EUGENE WATER YEAR 2016-17 (1 OCT 2016 THROUGH 30 SEP 2017)
       46.25 INCHES      0.15 INCHES ABOVE NORMAL
 
 TOTAL SNOWFALL FOR 2017...   TRACE    (NORMAL: 2.9 INCHES)
 
 ============================================================
 2017 EUGENE AIRPORT WIND AND PRESSURE DATA...
 
       AVERAGE SPEED (MPH)    STRONGEST WIND GUST 
 MONTH   2017   NORMAL      DIRECTION   SPEED   DATE
 ----------------------------------------------------------
 JAN      6.7    7.1         SOUTH       44 MPH  JAN 18
 FEB      7.9    7.2         SOUTH       41 MPH  FEB  5
 MAR      7.9    7.5         SOUTH       54 MPH  MAR  1
 APR      7.8    7.2         SOUTH       45 MPH  APR  7
 MAY      6.4    6.7        NORTHWEST32 MPH  MAY 16
 JUN      7.1    7.0         WEST        36 MPH  JUN  9
 JUL      7.2    7.5         SOUTHWEST   31 MPH  JUL  6
 AUG      7.3    7.2         NORTH       33 MPH  AUG 20
 SEP      6.4    6.8         SOUTHWEST   31 MPH  SEP  6
 OCT      7.1    6.4         SOUTH       38 MPH  OCT 21
 NOV      7.1    7.1         SOUTHWEST   31 MPH  NOV 18
 DEC      5.2    7.2         WEST        36 MPH  DEC 19
 
 2017     7.2    7.1        SOUTHWEST   54 MPH  MAR 1
 
 HIGHEST PRESSURE IN 2017...30.68 INCHES    JAN 27
 LOWEST PRESSURE IN 2017...29.07 INCHES    JAN 20
     
 =============================================================
 EUGENE AIRPORT CLIMATE PERIOD OF RECORDS...   1892 TO 2017
 EUGENE AIRPORT CLIMATE NORMALS BASED ON...    1981 TO 2010
 =============================================================
 
 DATA COMPILED BY ROCKEY
 NATIONAL WEATHER SERVICE PORTLAND OREGON
 
 ONLINE AT:     WEATHER.GOV/PORTLAND