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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, FEBRUARY 25, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

MILD TEMPERATURES CONTINUE, BUT MUCH LESS SUN TODAY....

The mild temperatures continue as today marks the third
day in a row with a temperature of 50 or above. The 
biggest change, unlike the last 2 days, today has seen
much less sunshine with a mostly cloudy sky being observed.

Visibility has been quite limited today maxing out at only
30 miles early this afternoon. 

The high so far today is 51F degrees, this is 12 degrees
above the normal of 39F. The low since midnight is 41F, 
20 degrees above the normal daily minimum of 21F.


Today's Observations:

7 A.M.
Weather: Overcast altostratus, few stratocumulus E-SE
Temperature: 42F; Dew Point: 40F; Relative Humidity: 92%
Wind: S at 5 kts
Sea-level pressure: 29.89 ins. Hg: rising, then falling
Visibility: 15 miles, hazy
6-hr Max temp: 42F
6-hr Min temp: 41F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 E80 OVC 15 123/42/40/1905/989/ FEW SC E-SE
VIRGA ALQDS HIER CLDS VSBL SE THN K LYR ALQDS HAZY
WND LGT / 8/52/ 58003 10042 20041

10 A.M.
Weather: Broken altocumulus, thin broken cirrus
Temperature: 48F; Dew Point: 41F; Relative Humidity: 76%
Wind: SSE at 6 kts
Sea-level pressure: 29.91 ins. Hg: falling, then rising
Visibility: 20 miles, hazy
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E90 BKN 250 –BKN 20 127/48/41/1606/991/
FEW SC E-SE-SSW HAZY WND LGT/ 8/571 50004

1 P.M.
Weather: Overcast altocumulus, few cumulus distant ESE-S
Temperature: 50F; Dew Point: 38F; Relative Humidity: 62%
Wind: S at 4 kts
Sea-level pressure: 29.88 ins. Hg: rising, then falling
Visibility: 30 miles 
6-hr Max temp: 51F
6-hr Min temp: 42F
6-hr Precip:  0.00 ins. 
6-hr Snowfall: 0.0 ins.
BHO SA 1755 E80 OVC 30 117/50/38/1904/988/ FEW BINOVC DSNT S-SW
FEW CU DSNT ESE-S VSBY W 20 N 15 HAZY WND LGT/ 8/17/ 58010
10051 20042


SUMMARY FOR MONDAY, FEBRUARY 24, 2020 

TEMPERATURE (DEGREES F)
MAX.....60   NORMAL.....39
MIN.....32   NORMAL.....21
MEAN....46   NORMAL.....30

DEPARTURE FROM 30-YEAR NORMAL...................+16
TOTAL DEPARTURE FOR THE MONTH..................+126 [+5.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............19  DEPARTURE.......-16
TOTAL HEATING UNITS FOR THE MONTH..............771  DEPARTURE......-128
TOTAL HEATING UNITS FOR THE SEASON............4000  DEPARTURE......-430
TOTAL HEATING UNITS LAST SEASON TO DATE.......4316  DEPARTURE......-316

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................29 S   AT  2:32 P.M.  
                   AERO.........................29 SSW AT  1:08 P.M.   
                   ASOS.........................32 S   AT  2:32 P.M. 
                   DAVIS........................30 S   AT  2:32 P.M. RMY 31
FASTEST MILE FOR YESTERDAY......................24 S   AT  2:42 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................23 S   AT  2:36 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................22 SSW AT 12:17 P.M.
AVERAGE WIND SPEED AND DIRECTION..............14.0 SSW                
                   ASOS.......................14.2
                   DAVIS......................13.2 SSW [207 deg.]


PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.16
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........2.20  DEPARTURE......-1.22
                         ASOS..............2.30
TOTAL PRECIPITATION FOR THE YEAR...........3.66  DEPARTURE......-4.11
                         ASOS..............3.84

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......-11.4
TOTAL SNOWFALL FOR THE SEASON..............24.8  DEPARTURE......-20.3


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 The low since midnight is 41F, 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 25
HIGH 68F IN 2017
LOW -10F IN 1894
PRECIP 2.40 INCHES IN 1981
SNOWFALL 13.6 INCHES IN 1966
PEAK GUST 76 MPH S IN 2016

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


TODAY'S REPORT PREPARED BY: Matt Douglas and Ann Murphy