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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, FEBRUARY 24, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME

TRACE OF SNOW OVERNIGHT AS TEMPS WARM ABOVE FREEZING TODAY,
CONTINUED RAIN AND DRIZZLE THROUGH THIS AFTERNOON

Light snow started and stopped multiple times from late
afternoon through last evening leaving just a trace of 
frozen precipitation. Temperatures warmed above freezing by
10:00 PM EST last evening and were in the upper 30s by this
morning's 7:00 AM EST observation. 

A quarter of an inch of rain was measured by today's first
observation, whereby rain transitioned to drizzle by mid-
morning. By today's 1:00 PM EST observation, fog was still
thickly in place with 0.30 inches of liquid precipitation measured
total so far with heavier rain on the way.


Today's Observations:

7 A.M.
Weather: Light rain, fog
Temperature: 38F; Dew Point: 38F; Wind: ENE at 13G22 kts,
Sea-level pressure: 30.18 ins. Hg, decreasing, then more slowly
Visibility: 1/4 of a mile, fog, light rain
6-hr Max temp: 38F 
6-hr Min temp: 35F
24-hr precip: 0.25 ins.
24-hr snowfall: Trace
BHO SA 1155 W3 X 1/4R-F 220/38/38/0613G22/018/ NEW SNW PST 24 HRS 
TRACE/ 8//// 56017 ASOS 60022 70025 MANUAL 70025 10038 20035

10 A.M.
Weather: Light drizzle, fog
Temperature: 40F; Dew Point: 40F; Wind: ENE at 16G24 kts
Peak Wind: 25 knots ENE at 9:37 AM EST
Sea-level pressure: 30.08 ins. Hg, falling rapidly
3-hr precip: 0.04 ins.
Visibility: 1/4 of a mile, light drizzle and fog
BHO SA 1455 W4 X 1/4L-F 187/40/40/0616G24/008/ PRESFR PK WND 0725/37/ 
8//// 58033 ASOS 60006 MANUAL 60004

1 P.M.
Weather: Drizzle end 12:54 PM EST, light rain begins 12:54 PM EST, fog
Temperature: 40F; Dew Point: 40F; Wind: ENE at 9G18 kts
Sea-level pressure: 29.98 ins. Hg, falling rapidly
Visibility: 1/4 of a mile, light rain, fog
6-hr Max temp: 42F
6-hr Min temp: 38F
6-hr precip: 0.05 ins. 
BHO SA 1755 W3 X 1/4R-F 152/40/40/0609G18/998/ L-E54R-B54 PRESFR/ 
8//// 58035 ASOS 60007 MANUAL 60005 10042 20038


SUMMARY FOR TUESDAY, FEBRUARY 23, 2016 
  
TEMPERATURE (DEGREES F)
MAX.....37   NORMAL.....39
MIN.....25   NORMAL.....21 
MEAN....31   NORMAL.....30

DEPARTURE FROM 30-YEAR NORMAL.........................+1
TOTAL DEPARTURE FOR THE MONTH........................+60 [+2.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............34   DEPARTURE..........-1
TOTAL HEATING UNITS FOR THE MONTH.............802   DEPARTURE.........-62
TOTAL HEATING UNITS FOR THE SEASON...........3544   DEPARTURE........-850
TOTAL HEATING UNITS LAST SEASON TO DATE......4464   DIFFERENCE.......-920

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................26 E   AT  6:57 P.M.                        
                   ASOS........................25 E   AT  6:57 P.M.     
                   DAVIS.......................23 ENE AT 11:00 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................19 ENE AT 11:13 P.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE..................20 E   AT 11:13 P.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE.................17 E   AT  6:58 P.M.      
AVERAGE WIND SPEED AND DIRECTION...............10.7 E
                   ASOS........................10.5  
                   DAVIS.......................9.6  E [076 Deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.25  DEPARTURE......+0.09
                         ASOS..............0.25
TOTAL PRECIPITATION FOR THE MONTH..........4.34  DEPARTURE......+1.08
                         ASOS..............4.58
TOTAL PRECIPITATION FOR THE YEAR...........8.11  DEPARTURE......+0.50  
                         ASOS..............8.52

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M........TRACE  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH...............22.5  DEPARTURE......+11.0
TOTAL SNOWFALL FOR THE SEASON..............38.1  DEPARTURE.......-6.5

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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

2/1   64/40/52/+26/0.00/0.0/305/51          36 WNW AERO 37 W   RMY 34
2/2   48/31/40/+14/0.00/0.0/602/100         23 NW  AERO 23 WNW RMY N/A
2/3   55/34/45/+19/0.80/0.0/000/00          55 SSE AERO 58 SSE RMY 53
2/4   55/39/47/+21/..../0.0/000/00          37 W   AERO 36 W   RMY 35
2/5   39/19/29/+3/..../12.5/000/00          37 NNW AERO 39 NNW RMY 35
2/6   35/17/26/0/0.00/0.0/532/87            25 SSW AERO 24 SSW RMY 23 
2/7   43/26/35/+8/0.00/0.0/.../..           35 ENE AERO 35 ENE RMY N/A
2/8   36/16/26/-1/..../.../000/00           53 NE  AERO 55 NE  RMY 53
2/9   26/17/22/-5/..../.../000/00           21 N   AERO 22 N   RMY N/A
2/10  33/21/27/+0/0.01/0.0/.../..           23 W   AERO 23 W   RMY 21
2/11  26/7/17/-10/T/T/.../..                39 W   AERO 47 W   RMY 42
2/12  23/4/13/-14/0.00/0.0/.../..           31 WNW AERO 38 WNW RMY 21
2/13  21/-7/7/-21/0.00/0.0/.../..           41 W   AERO 46 WNW RMY 43 
2/14  10/-14/-2/-30/0.00/0.0/632/100        33 WNW AERO 46 WNW RMY N/A
2/15  32/-2/15/-13/..../1.2/.../..          24 E   AERO 28 E   RMY N/A
2/16  55/32/44/+16/..../0.0/.../..          65 SSE AERO 69 SSE RMY 64
2/17  43/30/37/+9/0.00/0.0/.../..           33 W   AERO 35 W   RMY N/A
2/18  32/20/26/+3/0.00/0.0/.../..           25 NNW AERO 29 NW  RMY 25 
2/19  39/16/28/-1/0.01/T/.../..             24 SSW AERO 26 SSW RMY N/A
2/20  58/31/45/+16/..../.../.../..          44 SSW AERO 44 SSW RMY 41
2/21  53/39/46/+17/0.00/0.0/.../..          39 WNW AERO 43 WNW RMY 39 
2/22  45/29/37/+8/0.00/0.0/.../..           18 NW  AERO 20 NW  RMY 17
2/23  37/25/31/+1/..../T/.../..             26 E   AERO 26 E   RMY N/A

2/24  morning low temp. since midnight 33F; normal now 21F

DAILY RECORDS FOR FEBRUARY 2016

2/14/16: **NEW DAILY RECORD LOW MINIMUM TEMPERATURE OF -14F,
SURPASSING PREVIOUS RECORD OF -8F SET IN 1979**
2/14/16: **TIED DAILY RECORD LOW MAXIMUM TEMPERATURE OF 10F,
MATCHING PREVIOUS RECORD OF 10F SET IN 1979**

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

RECORDS FOR FEBRUARY 24
HIGH 68F IN 1985 [RECORD FOR MONTH]
LOW -11F IN 1894
PRECIP 3.10 INCHES IN 1969
SNOWFALL 27.4 INCHES IN 1969 [HIGHEST CALENDAR DAY AMOUNT ON RECORD]
PEAK GUST 63 MPH NE IN 1998

RECORDS FOR FEBRUARY 25
HIGH 67F IN 1976
LOW -10F IN 1894
PRECIP 2.40 INCHES IN 1981
SNOWFALL 13.6 INCHES IN 1966
PEAK GUST 75 MPH S IN 1965

TODAY'S REPORT PREPARED BY: Brian Fitzgerald