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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, FEBRUARY 26, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

OVERCAST WITH LIMITED VISIBILITY FOLLOWING
SOME OVERNIGHT RAINFALL....

We observed fog throughout the day, limiting visibility
to 5 miles at 7 A.M. and 35 miles at 1 P.M. Rain overnight
left 0.26 inches in the gauge at 7 A.M. Ponds are completely
devoid of ice, with temperatures remaining above freezing 
for the past few days. 

Something of note about the monthly snowfall is that the
observatory is a foot under normal. On the season, we 
are -20.8 inches below normal. We are also on track for
one of the warmest winters on record, with the average
temperature for this season being around 34F. Based on the
NWS averaging method, the normal winter mean temperature 
is 28.2F.  

The high so far today is 45F degrees, this is 6 degrees 
above the normal of 39F. The low since midnight is 39F, 
18 degrees above the normal daily minimum of 21F.


Today's Observations:

7 A.M.
Weather: Overcast stratus
Temperature: 40F; Dew Point: 40F; Relative Humidity: 100%
Wind: NNE at 8 kts
Sea-level pressure: 29.96 ins. Hg: falling, then rising
Visibility: 5 miles, fog
6-hr Max temp: 40F
6-hr Min temp: 39F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 E50 OVC 5F 146/40/40/0208/996/ 8/6// 70026 
51012 10040 20039

10 A.M.
Weather: Overcast altostratus, few cumulus
Temperature: 48F; Dew Point: 41F; Relative Humidity: 79%
Wind: ENE at 8 kts
Sea-level pressure: 29.99 ins. Hg: falling, then rising
Visibility: 20 miles, distant fog
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E110 OVC 20 158/43/37/0708/999/ FEW CU DSNT 
FG ALQDS/ 8/11/ 50012

1 P.M.
Weather: Broken cumulus, overcast altostratus
Temperature: 45F; Dew Point: 41F; Relative Humidity: 84%
Wind: NE at 8 kts 
Sea-level pressure: 29.99 ins. Hg: rising, then falling
Visibility: 35 miles, distant fog 
6-hr Max temp: 45F
6-hr Min temp: 40F
6-hr Precip:  0.00 ins. 
6-hr Snowfall: 0.0 ins.
BHO SA 1755 E50 BKN 80 OVC 35 157/45/41/0408/999/ DSNT FG 
ALQDS/ 8/11/ 58001 10045 20040 


SUMMARY FOR TUESDAY, FEBRUARY 25, 2020 

TEMPERATURE (DEGREES F)
MAX.....53   NORMAL.....39
MIN.....40   NORMAL.....21
MEAN....47   NORMAL.....30

DEPARTURE FROM 30-YEAR NORMAL...................+17
TOTAL DEPARTURE FOR THE MONTH..................+143 [+5.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............18  DEPARTURE.......-17
TOTAL HEATING UNITS FOR THE MONTH..............789  DEPARTURE......-145
TOTAL HEATING UNITS FOR THE SEASON............4018  DEPARTURE......-446
TOTAL HEATING UNITS LAST SEASON TO DATE.......4350  DEPARTURE......-332

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................17 NE  AT  8:22 P.M.  
                   AERO.........................18 ENE AT  4:40 P.M.   
                   ASOS.........................19 S   AT  3:13 A.M. 
                   DAVIS........................20 S   AT  1:18 A.M. RMY 17
FASTEST MILE FOR YESTERDAY......................14 S   AT  4:52 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................15 S   AT  3:04 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................14 NE  AT  8:21 P.M.
AVERAGE WIND SPEED AND DIRECTION...............7.7 S                
                   ASOS........................8.1
                   DAVIS.......................7.8 SSE [143 deg.]


PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.26  DEPARTURE......+0.10
                         ASOS..............0.28
TOTAL PRECIPITATION FOR THE MONTH..........2.46  DEPARTURE......-1.12
                         ASOS..............2.58
TOTAL PRECIPITATION FOR THE YEAR...........3.92  DEPARTURE......-4.01
                         ASOS..............4.12

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH................0.6  DEPARTURE......-11.9
TOTAL SNOWFALL FOR THE SEASON..............24.8  DEPARTURE......-20.8


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

02/01  38/30/34/+8/0.01/T/..../..          14 WSW AERO 14 WSW RMY N/A
02/02  40/30/35/+9/0.00/0.0/..../..        18 W   AERO 18 WNW RMY 18
02/03  44/27/36/+10/0.00/0.0/..../..       28 W   AERO 28 W   RMY 28
02/04  44/33/39/+13/0.00/0.0/..../..       19 E   AERO 16 E   RMY 18
02/05  41/30/36/+10/0.00/0.0/..../..       20 NNW AERO 19 NNW RMY N/A
02/06  31/30/34/+8/0.00/0.0/..../..        29 E   AERO 28 E   RMY 27
02/07  53/25/39/+12/..../0.1/..../..       71 WSW AERO 71 SSW RMY 73
02/08  33/20/27/0/T/T/..../..              46 W   AERO 44 W   RMY 44
02/09  33/15/24/-3/T/T/..../..             30 SSE AERO 29 SSE RMY N/A
02/10  42/33/38/+11/..../0.0/..../..       39 SSW AERO 39 SSW RMY 39
02/11  40/36/38/+11/..../0.0/..../..       24 W   AERO 23 W   RMY N/A
02/12  41/30/36/+9/0.00/0.0/..../..        37 W   AERO 36 W   RMY N/A
02/13  35/31/34/+6/.00/0.0/..../..         29 SSW AERO 29 SSW RMY N/A
02/14  33/8/21/-7/0.00/0.0/..../..         32 WNW AERO 32 NW  RMY 34
02/15  27/4/16/-12/0.00/0.0/..../..        31 SSW AERO 31 SSW RMY N/A
02/16  40/23/32/+4/0.00/0.0/..../..        38 SW  AERO 38 SW  RMY N/A
02/17  44/28/36/+8/0.00/0.0/..../..        25 WNW AERO 24 WNW RMY 24
02/18  37/27/32/+3/0.31/T/..../..          26 SE  AERO 26 SE  RMY N/A
02/19  42/25/34/+5/0.00/0.0/..../..        45 W   AERO 46 W   RMY 44
02/20  31/18/25/-4/0.00/0.0/..../..        32 W   AERO 32 W   RMY N/A
02/21  30/11/21/-8/0.00/0.0/..../..        24 NNW AERO 21 N   RMY N/A
02/22  44/23/34/+5/0.00/0.0/..../..        26 W   AERO 24 W   RMY 27
02/23  53/30/42/+12/0.00/0.0/..../..       21 SW  AERO 22 WSW RMY 23
02/24  60/32/46/+16/0.00/0.0/..../..       29 S   AERO 29 SSW RMY 31
02/25  53/40/47/17/..../0.0/..../..        17 NE  AERO 18 ENE RMY 17

02/26 The low since midnight is 39F, daily normal minimum is 21F 


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

RECORDS FOR FEBRUARY 26
HIGH 67F IN 1957
LOW -7F IN 1928
PRECIP 2.24 INCHES IN 1979
SNOWFALL 11.1 INCHES IN 1933
PEAK GUST 66 MPH W IN 1961

RECORDS FOR FEBRUARY 27
HIGH 61F IN 1976
LOW -8F IN 1900
PRECIP 1.43 INCHES IN 2013
SNOWFALL 6.0 INCHES IN 1922
PEAK GUST 67 MPH W IN 1985

TODAY'S REPORT PREPARED BY: Benjamin Turner and Greg White