BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JANUARY 2, 2015   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
SOME OF THE DECEMBER 2014 PRELIMINARY STATS
 
TEMPERATURE:  Deg. F
Av. Max. 42.0
Av. Min. 29.3
MEAN     35.7 [+4.3]
24-hour corrected mean: 35.5
Max. temp: 63 deg. Dec.  1
Min. temp: 14 deg. Dec. 31
Total heating degree day units:   908 [-142]
Total heating degree day units
for the season beginning July 1: 2067 [-238]
 
PRECIPITATION: Ins.
Total: 7.21 [+2.32]
Greatest in 24 hours;
Snowfall:  2.3 [-11.1]
Seasonal: 11.0 [-5.0 ]
 
WIND:
Av. uncorrected wind speed: 11.8 MPH
Av.   corrected wind speed: 12.2 MPH
Prevailing wind direction: W @ 14%   
 
SUNSHINE:
Astronomical total minutes:   5880/16999 or 35%
Campbell-Stokes card minutes: 5688/16470 or 35%
 
 
Additional stats will follow in coming days....
 
 
Today's Observations:
 
7 A.M.
Weather: Scattered stratocumulus, clouds dissipating past hour, 
few altocumulus lenticularis NW-E, cirrus E-SE     
Temperature: 30F; Dew Point: 14F; Wind: WSW at 11 kts
Sea-level pressure: 30.03 ins. Hg, rising then more rapidly                       
Visibility: 35 miles, distant haze
6-hr max temp: 32F
6-hr min temp: 30F
24-hr precip.: 0.00 ins
BHO SA 1155 55 SCT 80 SCT 220 SCT 35 170/30/14/2411/003/
CLDS DSSPTG PST HR DSNT HZ/ 8/501 53021 10032 20030

10 A.M.
Weather: Clear, few cumulus fractus forming SSE-SW,
stratocumulus distant SSE-W-N 
Temperature: 35F; Dew Point: 17F; Wind: W at 13 kts
Sea-level pressure: 30.11 ins. Hg, increasing, then more slowly 
Visibility: 35 miles, distant haze
BHO SA 1455 CLR 35 195/35/17/2613/011/ CUFRA FRMG SSE-SW
SC DSNT SSE-W-N DSNT HZ/ 8/800 51025
 

SUMMARY FOR THURSDAY, JANUARY 1, 2014 NEW YEAR’S DAY
 
TEMPERATURE (DEGREES F)
MAX.....31   NORMAL.....34
MIN.....18   NORMAL.....17
MEAN....25   NORMAL.....26
 
DEPARTURE FROM 30-YEAR NORMAL..........................-1
TOTAL DEPARTURE FOR THE MONTH..........................-1
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............40  DEPARTURE...........+1
TOTAL HEATING UNITS FOR THE MONTH..............40  DEPARTURE...........+1    
TOTAL HEATING UNITS FOR THE SEASON...........2107  DEPARTURE.........-236
TOTAL HEATING UNITS LAST SEASON TO DATE......2321  DIFFERENCE........-214
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................29 SSW   AT  12:26 P.M.       
                   ASOS.......................30 SSW   AT  12:26 P.M.      
                   DAVIS......................29 SW    AT  12:25 P.M. RMY 30
FASTEST MILE FOR YESTERDAY....................22 SW    AT  12:07 P.M.        
MAXIMUM 2-MINUTE ASOS AVERAGE.................22 SW    AT  12:08 P.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE................22 SSW   AT  11:50 A.M.        
AVERAGE WIND SPEED AND DIRECTION............14.9 WSW
                   ASOS.....................15.3   
                   DAVIS....................13.5 SW [230 degrees] 
* last of several occurrences...               
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.00  DEPARTURE.....-0.15   
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE YEAR...........0.00  DEPARTURE.....-0.15
                         ASOS..............0.00  
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.6
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE......-0.6
TOTAL SNOWFALL FOR THE SEASON..............11.0  DEPARTURE......+4.4 
 
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER-JANUARY 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/+8/0.42/0.0/000/00              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/-2/0.11/1.0/164/30              21 NNE RMY 23
12/21 31/29/30/+0/0.08/0.7/000/00              20 NNE RMY 22
12/22 42/29/36/+7/0.01/0.0/038/07              23 E   RMY N/A
12/23 44/39/42/+13/0.31/0.0/000/00             28 ENE RMY 30
12/24 61/40/51/+22/0.63/0.0/000/00             32 SSW RMY 41
12/25 61/41/51/+23/0.21/0.0/213/39             37 W   RMY 43
12/26 47/35/41/+13/0.00/0.0/540/99             24 WSW RMY 28
12/27 50/35/43/+15/0.00/0.0/038/07             21 SSW RMY N/A
12/28 49/35/42/+14/0.02/0.0/470/86             31 W   RMY 36
12/29 41/26/34/+7/0.00/0.0/470/86              23 WNW RMY 23
12/30 27/16/22/-5/0.00/0.0/470/86              22 NW  RMY N/A 
12/31 28/14/21/-6/0.00/0.0/400/73              23 W   RMY N/A
 
1/1   31/18/25/-1/0.00/0.0/.../..              29 SSW RMY 30
 
1/2   morning low temp: 30F since midnight; normal low is now 19F
 
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 TEMPERATURE RECORD FOR DECEMBER 24 2014
        Old record of 58F set in 1996,
        replaced with new record of 61F.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):    
 
RECORDS FOR JANUARY 2
HIGH 62F IN 1890
LOW -7F IN 1899,1918
PRECIP 2.10 INS. IN 1987
SNOWFALL 9.0 INS. IN 1904
PEAK GUST 85e MPH S IN 1942
 
RECORDS FOR JANUARY 3
HIGH 64F IN 2000
LOW -4F IN 1904
PRECIP 1.93 INS. IN 1999
SNOW 11.3 INS. 1996
PEAK GUST 92 MPH S IN 1960
 
TODAY'S REPORT PREPARED BY: Robert Skilling