BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, DECEMBER 24, 2014    
ALL TIMES ARE IN EASTERN STANDARD TIME
 
LOW CLOUDS, FOG AND DRIZZLE PERSIST TODAY
MORNING LOW TEMP. OF 40F WAS 19 DEGREES ABOVE NORM
NEAR RECORD HIGH MAXIMUM TEMPERATURES LIKELY LATE
TODAY AND EARLY ON CHRISTMAS (12/24 and 12/25)
 
The very gloomy month of December continues but
temperatures are rising despite low clouds and fog.
The morning low of 40 deg. was far above the normal
for this date of 21 degrees.
 
A surge of warm air from the south and southwest was
expected to arrive late today on increasing southeast
to south winds.
We may challenge the record high maximum for December 24 of
58 degrees set in 1996. Also, the record high of 62
degrees established on Christmas Day 1889 could be approached
early on this Christmas Day.
 
Today's Observations:
 
7 A.M.
Weather: Obscurement with fog, light drizzle
Temperature: 41F; Dew Point: 41F; Wind: NE at 11 kts
Sea-level pressure: 30.08 ins. Hg, falling slightly                     
Visibility: 1/16 of a mile, light drizzle and dense fog
6-hr max temp: 42F
6-hr min temp: 40F
24-hr precip:  0.31 in.
24-hr snowfall: none  
BHO SA 1155 W2 X 1/16L-F 187/41/41/0411/008/ 8//// 56006
ASOS 60005 MANUAL 6//// ASOS 70033 MANUAL 70031 10042 20040
 
10 A.M.
Weather: Obscurement with fog, light drizzle
Temperature: 43F; Dew Point: 43F; Wind: ENE at 9 kts,
Sea-level pressure: 30.04 ins. Hg, falling then more slowly
Visibility: 1/8 mile, variable 1/16
3-hr precip: 0.02 in.
BHO SA 1455 W2 X 1/8VL-F 173/43/43/0709/004/ VSBY 1/8V1/16/
8//// 56014 MANUAL 6002/ ASOS 60002
 
SUMMARY FOR TUESDAY, DECEMBER 23, 2014
 
TEMPERATURE (DEGREES F)
MAX.....44   NORMAL.....37
MIN.....39   NORMAL.....22
MEAN....42   NORMAL.....29
 
DEPARTURE FROM 30-YEAR NORMAL........................+13
TOTAL DEPARTURE FOR THE MONTH........................+57 [+2.3 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............23  DEPARTURE..........-13
TOTAL HEATING UNITS FOR THE MONTH.............693  DEPARTURE..........-52    
TOTAL HEATING UNITS FOR THE SEASON...........1852  DEPARTURE.........-155
TOTAL HEATING UNITS LAST SEASON TO DATE......1980  DIFFERENCE........-128
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................28  ENE  AT  8:59 A.M.     
                   ASOS.......................31  ENE  AT  8:59 A.M.     
                   DAVIS......................29  ENE  AT  8:49 A.M. RMY 30
FASTEST MILE FOR YESTERDAY....................22  E    AT 10:56 A.M. *    
MAXIMUM 2-MINUTE ASOS AVERAGE.................23  E    AT 10:56 A.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE................22 ENE   AT  9:43 A.M.      
AVERAGE WIND SPEED AND DIRECTION.............13.1 E
                   ASOS......................13.1  
                   DAVIS.....................11.7 ENE [070 degrees] 
* last of several occurrences.....
               
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.31  DEPARTURE.....+0.15
                         ASOS..............0.33
TOTAL PRECIPITATION FOR THE MONTH..........6.43  DEPARTURE.....+2.72        
                         ASOS..............6.63 
TOTAL PRECIPITATION FOR THE YEAR..........54.19  DEPARTURE.....+1.95
                         ASOS.............54.82  
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.5
TOTAL SNOWFALL FOR THE MONTH................2.3  DEPARTURE......-6.9
TOTAL SNOWFALL FOR THE SEASON..............11.0  DEPARTURE......-0.8 
 
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
12/1  63/37/50/+13/0.01/0.0/391/70             28 WNW RMY 31
12/2  37/30/34/-2/0.10/T/000/00                26 E   RMY 29
12/3  49/34/42/+6/0.31/0.0/000/00              40 W   RMY 43
12/4  41/27/34/-1/0.00/0.0/505/91              29 WNW RMY N/A
12/5  42/23/33/-2/0.12/0.0/382/69              21 E   RMY 22
12/6  43/36/40/+5/0.99/0.0/000/00              25 NNW RMY N/A
12/7  36/18/27/-7/0.15/0.0/193/35              31 N   RMY 34
12/8  25/16/21/-13/0.01/0.1/000/00             24 N   RMY N/A
12/9  48/25/37/+3/3.23/0.0/000/00              48 ENE RMY 52
12/10 47/35/41/+8/0.43/0.0/000/00              35 NNE RMY 37
12/11 35/29/32/-1/0.05/0.5/000/00              27 SW  RMY 27 
12/12 36/26/31/-2/0.00/0.0/230/42              23 WNW RMY 25
12/13 40/27/34/+2/0.00/0.0/191/35              28 NW  RMY 28
12/14 43/28/36/+4/0.00/0.0/377/69              20 NW  RMY 20
12/15 41/28/35/+3/0.00/0.0/536/98              17 NW  RMY 17
12/16 42/33/38/+7/T/T/011/02                   17 E   RMY N/A
12/17 45/37/41/+10/0.43/0.0/000/00             27 W   RMY N/A
12/18 41/32/37/+6/0.02/T/213/39                35 WNW RMY 38  
12/19 34/25/30/0/0.00/0.0/000/00               26 NW  RMY 29
12/20 32/24/28/-2/..../.../.../..              21 NNE RMY 23
12/21 31/29/30/+0/..../.../000/00              20 NNE RMY 22
12/22 42/29/36/+7/..../.../.../..              23 E   RMY N/A
12/23 44/39/42/+13/..../../000/00              28 ENE RMY 30
 
12/24 morning low temp: 40F since midnight; normal low is now 21F
 
DAILY RECORDS FOR DECEMBER 2014:
    
-DAILY PRECIPITATION RECORD FOR DECEMBER 9 2014
     Old record of 1.51 inches set in 1952,
     replaced with new record of 3.23 inches.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):     
 
RECORDS FOR DECEMBER 24
HIGH 58 IN 1996
LOW -6 IN 1943
PRECIP 2.21 INS. IN 1994
SNOWFALL 12.3 INS. IN 1961
PEAK GUST 79e MPH SE IN 1941
 
RECORDS FOR DECEMBER 25
HIGH 62 IN 1889
LOW -11 IN 1980
PRECIP 1.37 INS. IN 2002
SNOWFALL 8.5 INS. IN 2002
PEAK GUST 80 MPH NW IN 1971
 
TODAY'S REPORT PREPARED BY: Robert Skilling