BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, FEBRUARY 7, 2017  
ALL TIMES ARE IN EASTERN STANDARD TIME

WINTRY MIX OF SLEET AND SNOW THIS MORNING

Sleet and light snow began around 8:45AM turning into
light drizzle by noon.  Liquid precip. measured 0.26 in.
at 1:00PM. The associated storm has brought easterly
winds gusting over 30 MPH.  Temperatures have hovered
near freezing all day with an overnight min. of 30F at
midnight.


PRELIMINARY STATS FOR JANUARY 2017
 
TEMPERATURE, Deg. F
Avg. Max. 38.9 [+5.1]
Avg. Min. 26.4 [+9.3]
Mean      32.7 [+7.2]
24-hour corrected mean: 32.7
Max. for month: 59F on 12th
Min. for month:  4F on  9th
 
HEATING DEGREE DAYS
Total heating units: 995 [-231] 
Total for the season: 3027 [-504]
Total for last season: 2742

PRECIPITATION, Inches
Total: 5.50 [+1.15]
Greatest in 24 hrs: 1.87 on the 23-24th

SNOWFALL, Inches
Total: 13.0 [-4.1]
Greatest in 24 hrs: 9.5 in. on 7-8th
 
WIND, mph
Avg. uncorrected wind speed: 13.1
Avg. corrected wind speed: 13.5
Prevailing wind direction: WNW at 13%
Peak gust and direction: 62 NE on 24th
 
SUNSHINE:
Campbell-Stokes card minutes: 6690 mins. of possible 17130 or 39%
Astronomical total minutes: 6909 mins. of possible 17676 or 39%

The 24-hour corrected mean temperature for January of
32.7 deg F is the ninth warmest on record.

BHO Warmest January Corrected Mean Temperatures, deg F (1885-2017)

1) 35.6 in 1913
2) 35.0 in 1932
3) 34.6 in 1937
4) 33.9 in 2006
5) 33.8 in 1933
   33.8 in 1950
   33.8 in 1990
8) 33.5 in 2002
9) 32.7 in 2017
10)32.1 in 1967
   32.1 in 1995


Today's Observations:

7 A.M.
Weather: Scattered stratocumulus, overcast stratus
Temperature: 32F; Dew Point: 26F; Wind: ENE at 12G22 kts
Sea-level pressure: 30.08 ins. Hg, falling, then rising
Visibility: 40 miles, except 60 miles WNW-SW
6-hr Max temp: 32F
6-hr Min temp: 31F
24-hr precip: 0.00 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 16 SCT E28 OVC 40 186/32/26/0612G22/008/ VSBY WNW-SW 60/
8/6// 53004 10032 20031

10 A.M.
Weather: Snow, fog, sleet, light snow becoming moderate snow at 9:35AM
Temperature: 32F; Dew Point: 31F; Wind: ENE at 17G27 kts,
Peak Wind: 27 kts (31 mph) ENE at 9:51AM
Sea-level pressure: 30.07 ins. Hg, rising then falling  
Visibility: 1 1/2 miles
3-hr precip: 0.09 in.
3-hr snowfall: 0.3 in.
BHO SA 1455 W3 X 1 1/2SFIP 183/32/31/0717G27/007/ PK WND 0727/51 
S- BCMG S35 NEW SNW PST 3 HRS 0.3 INS/ 8//// 58003
ASOS 60009 MANUAL 6009/

1 P.M.
Weather: Light drizzle, fog
Temperature: 32F; Dew Point: 32F; Wind: ENE at 16G26 kts,
Peak Wind: 27 kts (31 MPH) ENE at 12:43PM
Sea-level pressure: 29.99 ins. Hg, rising then falling
Visibility: 1/8 mile
6-hr Max temp: 33F
6-hr Min temp: 31F
6-hr precip: 0.26 in.
6-hr snowfall: 0.7 in.
BHO SA 1755 W2 X 1/8L-F 156/32/32/0616G26/999/ PK WND 0727/43
PCPN VRY LGT NEW SNW PST 6 HRS 0.7 INS/ 8//// 4/001 58027
ASOS 60030 MANUAL 6026/ 10033 20031

SUMMARY FOR MONDAY, FEBRUARY 6, 2017
 
TEMPERATURE (DEGREES F)
MAX.....37   NORMAL.....35
MIN.....28   NORMAL.....18
MEAN....33   NORMAL.....26

DEPARTURE FROM 30-YEAR NORMAL........................+7
TOTAL DEPARTURE FOR THE MONTH.......................+22 [+3.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............32   DEPARTURE..........+7
TOTAL HEATING UNITS FOR THE MONTH.............212   DEPARTURE.........-22
TOTAL HEATING UNITS FOR THE SEASON...........3239   DEPARTURE........-526
TOTAL HEATING UNITS LAST SEASON TO DATE......2893   DIFFERENCE.......+346

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................41 WNW AT 3:38 A.M.
                   ASOS........................43 W   AT 3:38 A.M.
                   DAVIS.......................40 NW  AT 4:39 A.M. RMY 43
FASTEST MILE FOR YESTERDAY.....................29 WNW AT 3:21 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................29 WNW AT 3:39 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................28 NW  AT 3:39 A.M.
AVERAGE WIND SPEED AND DIRECTION.............14.1 W 
                   ASOS......................13.7
                   DAVIS.....................12.7 WNW [300 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.13
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.03  DEPARTURE......-0.78
                         ASOS..............0.04
TOTAL PRECIPITATION FOR THE YEAR...........5.53  DEPARTURE......+0.37
                         ASOS..............5.91

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH................0.4  DEPARTURE.......-2.6
TOTAL SNOWFALL FOR THE SEASON..............21.2  DEPARTURE......-14.9


PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system 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
M:    Missing data

1/1   41/29/35/+8/0.09/0.0/533/97           35 W   AERO 36 W   RMY 34
1/2   38/29/34/+7/0.00/0.0/011/02           21 E   AERO 20 E   RMY N/A  
1/3   42/37/40/+14/1.14/0.0/000/00          39 ENE AERO 41 ENE RMY 34
1/4   44/30/37/+11/0.11/T/000/00            41 WNW AERO 46 WNW RMY 45 
1/5   30/23/27/+1/0.00/0.0/343/62           37 W   AERO 39 W   RMY 38
1/6   30/20/25/-1/0.05/1.7/072/13           20 W   AERO 20 W   RMY N/A
1/7   22/14/18/-8/0.74/9.5/000/00           32 NNW AERO 39 NNW RMY 38
1/8   20/06/13/-13/0.01/T/512/92            26 NNW AERO 29 NNW RMY N/A
1/9   17/04/11/-15/0.00/0.0/335/60          23 SSW AERO 23 SSW RMY 25
1/10  41/14/28/+3/0.18/0.0/369/66           35 SE  AERO 37 SE  RMY N/A
1/11  53/40/47/+22/0.13/0.0/358/64          51 SSW AERO 48 SSW RMY 57
1/12  59/42/51/+26/0.15/0.0/118/21          37 SSW AERO 40 S   RMY 40
1/13  55/23/39/+14/0.00/0.0/535/95          39 WNW AERO 43 WNW RMY 42
1/14  30/14/22/-3/0.00/0.0/339/60           20 SSW AERO 20 SSW RMY 22
1/15  35/23/29/+4/0.00/0.0/555/98           28 NW  AERO 28 NW  RMY 28 
1/16  40/22/31/+6/0.00/0.0/540/95           28 SW  AERO 25 SW  RMY 27
1/17  40/29/35/+10/0.27/T/257/45            23 E   AERO 23 E   RMY 25
1/18  38/31/30/+10/0.29/T/000/00            30 ENE AERO 29 ENE RMY 26
1/19  44/30/37/+12/T/T/379/66               21 NNW AERO 20 NNW RMY 20
1/20  40/30/35/+10/T/0.0/000/00             17 NNW AERO 17 NNW RMY N/A
1/21  54/35/45/+20/T/0.0/133/23             29 W   AERO 29 W   RMY 28
1/22  46/36/41/+16/0.14/T/023/04            31 ENE AERO 30 ENE RMY N/A
1/23  36/33/35/+10/0.48/0.3/000/00          56 NE  AERO 58 NE  RMY N/A
1/24  40/32/36/+11/1.48/0.0/000/00          62 NE  AERO 60 NE  RMY 60
1/25  42/32/37/+12/0.03/0.0/486/83          41 WNW AERO 40 WNW RMY 38
1/26  48/36/42/+17/0.10/0.0/024/04          40 W   AERO 44 W   RMY 41
1/27  42/33/38/+13/T/T/212/36               46 W   AERO 46 W   RMY 50
1/28  38/29/34/+9/0.00/0.0/249/42           36 WNW AERO 40 WNW RMY 43
1/29  39/28/34/+9/0.00/0.0/143/24           29 WSW AERO 29 WSW RMY 32
1/30  34/20/27/+1/0.00/0.0/185/31           30 WNW*AERO 31 WNW RMY 31
1/31  28/15/22/-4/0.11/1.5/198/33           29 WNW AERO 30 WNW RMY N/A

DAILY RECORDS FOR JANUARY 2017

1/12/17: NEW DAILY RECORD HIGH MAXIMUM TEMP. OF 59F,
         PREVIOUS RECORD WAS 57F SET 1913 AND TIED IN 1975
1/12/17: NEW DAILY RECORD HIGH MINIMUM TEMP. OF 42F,
         PREVIOUS RECORD WAS 40F SET 2006

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system 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
M:    Missing data

2/1   40/23/32/+6/0.03/0.4/.../..           43 W   AERO 44 W   RMY 47
2/2   38/25/32/+6/T/T/.../..                36 WNW AERO 37 WNW RMY 36
2/3   30/19/25/-1/0.00/0.0/.../..           28 WNW AERO 29 WNW RMY 31
2/4   31/15/23/-3/0.00/0.0/.../..           31 WNW AERO 30 WNW RMY N/A
2/5   43/22/33/+7/0.00/0.0/.../..           38 SSW AERO 41 SSW RMY N/A
2/6   37/28/33/+7/0.00/0.0/.../..           41 WNW AERO 41 WNW RMY 43

2/7  Low temp since midnight is 30F; normal low is now 18F


DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR FEBRUARY 7
HIGH 51F IN 1951,1953
LOW -8F IN 1910
PRECIP 2.12 INS. IN 1983
SNOWFALL 17.1 INS. IN 1978 [BLIZZARD OF 1978]
PEAK GUST 87e MPH SSE IN 1951

RECORDS FOR FEBRUARY 8
HIGH 60F IN 1933
LOW -9F IN 1934
PRECIP 2.50 INS. IN 1945
SNOWFALL 16.1 INS. IN 2013
PEAK GUST 63e MPH NE IN 1945, 2013

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle