Friday, February 22, 2019

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, FEBRUARY 22, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

A WARMER THAN NORMAL DAY WITH GOOD VISIBILITY
AND WINDS FROM THE NORTHWEST….

We observed very little change in the weather
throughout the day. Conditions remained fair
and sunny, despite a thin layer of cirrostratus
clouds covering most of the sky. Snow depth
decreased from 3 to 2 inches since 7 A.M.
Wind from the northwest made little
contribution in keeping temperatures down,
as we reached a max of 43F so far today.
That is 5 degrees above the daily normal
maximum of 38F. The low since midnight is
32F, 12 degrees above the normal minimum of 20F.

Today’s Observations:

7 A.M.
Weather: Broken stratocumulus
Temperature: 34F; Dew Point: 22F; Wind: NW at 8 kts
Sea-level pressure: 30.23 ins. Hg, rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 35F
6-hr Min temp: 32F
24-hr Precip: 0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 3 ins.
BHO SA 1155 E50 BKN 70 236/34/22/3208/023/ 8/400
4/003 53026 10035 20032

10 A.M.
Weather: Scattered stratocumulus, broken cirrus
Temperature: 38F; Dew Point: 21F; Wind: NW at 9G18 kts
Sea-level pressure: 30.29 ins. Hg, rising steadily
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 40 SCT E250 BKN 80 256/38/21/3309G18/029/
8/402 53020

1 P.M.
Weather: Broken cirrostratus, few cumulus
Temperature: 43F; Dew Point: 21F; Wind: NW at 7 kts
Sea-level pressure: 30.29 ins. Hg, steady
Visibility: 80 miles
6-hr Max temp: 43F
6-hr Min temp: 34F
6-hr Precip:  0.00 ins.
6-hr snowfall: 0.0 ins.
Snow depth: 2 ins.
BHO SA 1755 E250 BKN 80 256/43/21/3307/029/ FEW CU ALQDS/
8/108 4/002 50000 10043 20034

SUMMARY FOR THURSDAY, FEBRUARY 21, 2019

TEMPERATURE (DEGREES F)
MAX…..43   NORMAL…..38
MIN…..21   NORMAL…..20
MEAN….32   NORMAL…..29

DEPARTURE FROM 30-YEAR NORMAL……………………+3
TOTAL DEPARTURE FOR THE MONTH…………………..+59 [+2.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..33   DEPARTURE………-3
TOTAL HEATING UNITS FOR THE MONTH………….732   DEPARTURE……..-61
TOTAL HEATING UNITS FOR THE SEASON………..4228   DEPARTURE……..-95
TOTAL HEATING UNITS LAST SEASON TO DATE……3955   DIFFERENCE……+273

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..36 W   AT  1:08 P.M.
AERO…………………….33 W   AT  1:03 P.M.
ASOS…………………….37 NW  AT  1:08 P.M.
DAVIS……………………39 W   AT  1:07 P.M. RMY 38
FASTEST MILE FOR YESTERDAY………………….31 W   AT  1:36 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….26 W   AT  3:28 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………29 WSW AT  1:38 P.M.
AVERAGE WIND SPEED AND DIRECTION………….12.2 WNW
ASOS………………….11.9
DAVIS…………………12.1 WSW [252 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE…….-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….2.91  DEPARTURE…….-0.05
ASOS…………..2.88
TOTAL PRECIPITATION FOR THE YEAR………..8.26  DEPARTURE…….+0.95
ASOS…………..8.36

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……..-0.5
TOTAL SNOWFALL FOR THE MONTH…………….8.6  DEPARTURE……..-1.8
TOTAL SNOWFALL FOR THE SEASON…………..21.0  DEPARTURE…….-22.5

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 19/5/12/-14/0.00/0.0/552/95          29 W   AERO 28 W   RMY N/A
02/02 30/7/19/-7/0.00/0.0/318/55           32 WSW AERO 32 WSW RMY 31
02/03 38/27/26/+7/0.00/0.0/126/22          26 S   AERO 25 S   RMY N/A
02/04 59/33/46/+20/0.00/0.0/540/93         25 SSW AERO 28 SSW RMY N/A
02/05 62/39/51/+25/0.00/0.0/354/60         30 WNW AERO 29 WNW RMY 32
02/06 39/28/34/+8/…./…/396/67          24 NNW AERO 23 NNW RMY N/A
02/07 37/31/34/+7/…./…/000/00          28 ENE AERO 24 ENE RMY 28
02/08 51/27/39/+12/…./…/204/34         46 W   AERO 46 WNW RMY 51
02/09 32/20/26/-1/0.00/0.0/594/100         50 WNW AERO 52 WNW RMY 52
02/10 33/18/26/-1/0.00/0.0/510/85          24 WNW AERO 23 WNW RMY 25
02/11 34/21/28/+1/0.00/0.0/318/53          24 NNW AERO 23 NNW RMY 25
02/12 33/13/23/-4/…./2.8/000/00          32 E   AERO 30 E   RMY 26
02/13 39/29/34/+6/…./0.1/018/03          36 W   AERO 32 W   RMY 36
02/14 37/26/32/+4/0.00/0.0/…/..          44 WNW AERO 42 WNW RMY 45
02/15 49/29/39/+11/0.11/0.0/…/..         40 S   AERO 40 S   RMY 44
02/16 44/26/35/+7/0.00/0.0/…/..          25 NW  AERO 25 NW  RMY N/A
02/17 37/19/28/0/…./…/…/..           30 NNW AERO 25 NNW RMY N/A
02/18 30/16/23/-6/…./…/…/..          35 NW  AERO 36 NW  RMY 41
02/19 30/10/20/-9/0.00/0.0/…/..          35 NW  AERO 33 NW  RMY N/A
02/20 26/12/19/-10/…./…/…/..         16 WNW AERO 14 SSW RMY N/A
02/21 43/21/32/+3/…./…/…/..          36 W   AERO 33 W   RMY 38

02/22 Low temp since midnight is 32F; normal low is 20F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR FEBRUARY 22
HIGH 63F IN 1997
LOW -1F IN 1918
PRECIP 1.38 INCHES IN 1900
SNOWFALL 8.0 INCHES IN 1893
PEAK GUST 74 MPH S IN 1974

RECORDS FOR FEBRUARY 23
HIGH 67F IN 2017
LOW -8F IN 1907
PRECIP 1.48 INCHES IN 1967
SNOWFALL 10.6 INCHES IN 1967
PEAK GUST 73 MPH WNW IN 1974

TODAY’S REPORT PREPARED BY: Benjamin Turner