Friday, February 28, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, FEBRUARY 28, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
A CHILLY, FAIR WEATHER DAY WITH A DECENT
AMOUNT OF WIND OUT OF THE WEST….
Today we observed increasing visibility, rising
from 60 miles this morning to 80 miles by the
1 P.M. observation. Wind was westerly at speeds
of 20 mph. The max gust so far today is 36 mph,
right before 8 A.M. Cold air advection from the
west has kept temperatures lower than normal
despite abundant sunshine.
The high so far today is 35F degrees, this is 5 degrees
below the normal of 40F. The low since midnight is 25F,
3 degrees above the normal daily minimum of 22F.
Today’s Observations:
7 A.M.
Weather: Few cumulus
Temperature: 26F; Dew Point: 10F; Relative Humidity: 49%
Wind: WSW at 13G23 kts
Sea-level pressure: 29.73 ins. Hg: rising unsteadily
Visibility: 60 miles
6-hr Max temp: 27F
6-hr Min temp: 25F
24-hr Precip: 0.16 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 CLR 60 068/26/10/2413G23/973/ FEW CU ALQDS/ 8/100 70016
52012 10027 20025
10 A.M.
Weather: Scattered cumulus and cirrostratus
Temperature: 30F; Dew Point: 11F; Relative Humidity: 44%
Wind: WSW at 24G28 kts
Peak wind: 36 MPH (31 kts) WSW at 7:54 A.M.
Sea-level pressure: 29.75 ins. Hg: falling, then rising
Visibility: 75 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 50 SCT 250 SCT 75 074/30/11/2418G28/975/ PK WND 2531/1254/
8/102 50006
1 P.M.
Weather: Scattered cumulus, broken cirrostratus
Temperature: 35F; Dew Point: 10F; Relative Humidity: 36%
Wind: WSW at 15G22 kts
Peak wind: 32 MPH (28 kts) WSW at 10:17 A.M.
Sea-level pressure: 29.71 ins. Hg: falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 36F
6-hr Min temp: 26F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 50 SCT E250 BKN 80 062/35/10/2415G22/971/ PK WND
2428/1517/ 8/105 58012 10036 20026
SUMMARY FOR THURSDAY, FEBRUARY 27, 2020
TEMPERATURE (DEGREES F)
MAX…..49 NORMAL…..40
MIN…..27 NORMAL…..22
MEAN….38 NORMAL…..31
DEPARTURE FROM 30-YEAR NORMAL……………….+7
TOTAL DEPARTURE FOR THE MONTH………………+162 [+5.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………27 DEPARTURE……..-7
TOTAL HEATING UNITS FOR THE MONTH…………..839 DEPARTURE……-164
TOTAL HEATING UNITS FOR THE SEASON…………4068 DEPARTURE……-466
TOTAL HEATING UNITS LAST SEASON TO DATE…….4442 DEPARTURE……-372
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..51 W AT 3:33 P.M.
AERO…………………….53 W AT 3:33 P.M.
ASOS…………………….51 W AT 3:33 P.M.
DAVIS……………………51 W AT 2:19 P.M. RMY 52
FASTEST MILE FOR YESTERDAY………………….41 ENE AT 3:51 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….38 W AT 3:52 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………40 W AT 3:32 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..23.4 W
ASOS…………………..22.1
DAVIS………………….23.5 WSW [253 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.16 DEPARTURE……+0.00
ASOS…………..0.21
TOTAL PRECIPITATION FOR THE MONTH……….3.20 DEPARTURE……-0.70
ASOS…………..3.37
TOTAL PRECIPITATION FOR THE YEAR………..4.66 DEPARTURE……-3.59
ASOS…………..4.91
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH…………….0.6 DEPARTURE……-12.8
TOTAL SNOWFALL FOR THE SEASON…………..24.8 DEPARTURE……-21.7
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 45/39/42/+12/…/0.0/…./.. 23 ENE AERO 24 E RMY N/A
02/27 49/27/38/+7/…/…/…./.. 51 W AERO 53 W RMY 52
02/28 The low since midnight is 25F, daily normal minimum is 22F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 28
HIGH 62F IN 1976
LOW -2F IN 1907,1934
PRECIP 1.79 INCHES IN 1958
SNOWFALL 8.5 INCHES IN 2005
PEAK GUST 88e MPH SSW IN 1943
RECORDS FOR FEBRUARY 29
HIGH 63F IN 2016
LOW 4F IN 1992
PRECIP 0.64 INCHES IN 1968
SNOWFALL 3.5 INCHES IN 1968
PEAK GUST 60 MPH NE IN 1968
TODAY’S REPORT PREPARED BY: Benjamin Turner and Ann Murphy
