Thursday, February 23, 2017

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, FEBRUARY 23, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

ABOVE AVERAGE TEMPS AND MODERATE WINDS

Today we saw temperatures well above normal. At the 1PM EST
observation we recorded a high of 65F which is above the previous
record of 62F set in 1990. The normal max temperature being 38F.
Winds continue to be from the S-SW and were moderate today increasing
from yesterday’s light winds. A distant morning fog/ afternoon haze
obscured visibility, but the sky was clear without a cloud at 1PM.

Today’s Observations:

7 A.M.
Weather: Broken altocumulus, distant fog all directions
Temperature: 44F; Dew Point: 39F; Wind: SW at 11 kts,
Sea-level pressure: 29.86 ins. Hg, falling unsteadily
Visibility: 20 miles
6-hr Max temp: 44F
6-hr Min temp: 40F
24-hr precip: 0.0 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 E110 BKN 20 111/44/39/2211/986/ DSNT FG ALQDS/
8/030 4/001 58001 10044 20040

10 A.M.
Weather: Clear, few altocumulus all directions, distant
haze all directions
Temperature: 56F; Dew Point: 42F; Wind: SSW at 8 kts,
Sea-level pressure: 29.87 ins. Hg, rising then falling
Visibility: 40 miles
BHO SA 1455 CLR 40 115/56/42/2008/987/ FEW AC ALQDS DSNT
HZ ALQDS/ 8/030 50004

1 P.M.
Weather: Clear, distant haze all directions
Temperature: 65F; Dew Point: 43F; Wind: SSW at 14G21 kts,
Sea-level pressure: 29.79 ins. Hg, falling unsteadily
Visibility: 40 miles
BHO SA 1755 CLR 40 089/65/43/2114G21/979/ SKC DSNT HZ ALQDS/
8/000 4/001 58026 10065 10044

SUMMARY FOR WEDNESDAY, FEBRUARY 22, 2017

TEMPERATURE (DEGREES F)
MAX…..56   NORMAL…..38
MIN…..34   NORMAL…..20
MEAN….45   NORMAL…..29

DEPARTURE FROM 30-YEAR NORMAL……………………+16
TOTAL DEPARTURE FOR THE MONTH……………………+76 [+3.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..20   DEPARTURE………-16
TOTAL HEATING UNITS FOR THE MONTH………….751   DEPARTURE………-77
TOTAL HEATING UNITS FOR THE SEASON………..3778   DEPARTURE……..-581
TOTAL HEATING UNITS LAST SEASON TO DATE……3510   DIFFERENCE…….+268

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….24 SSW AT 12:48 A.M.
AERO……………………24 SSW AT 12:48 A.M.
ASOS……………………25 SSW AT 12:47 A.M.
DAVIS…………………..26 SSW AT 12:48 A.M. RMY 20
FASTEST MILE FOR YESTERDAY…………………19 SSW AT 12:20 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………20 SSW AT 12:34 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..22 SSW AT 12:03 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.5 SW
ASOS………………….10.0
DAVIS………………….8.5 WSW [238 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.63  DEPARTURE……+0.53
ASOS…………….NA
TOTAL PRECIPITATION FOR THE YEAR………..9.13  DEPARTURE……+1.68
ASOS…………….NA

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.6
TOTAL SNOWFALL FOR THE MONTH……………31.5  DEPARTURE……+20.5
TOTAL SNOWFALL FOR THE SEASON…………..52.3  DEPARTURE…….+8.2

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

2/1   40/25/33/+7/0.03/0.4/228/38           43 W   AERO 44 W   RMY 47
2/2   38/25/32/+6/T/T/265/44                36 WNW AERO 37 WNW RMY 36
2/3   30/19/25/-1/0.00/0.0/351/58           28 WNW AERO 29 WNW RMY 31
2/4   31/15/23/-3/0.00/0.0/590/97           31 WNW AERO 30 WNW RMY N/A
2/5   43/22/33/+7/0.00/0.0/092/15           38 SSW AERO 41 SSW RMY N/A
2/6   37/28/33/+7/0.00/0.0/503/82           41 WNW AERO 41 WNW RMY 43
2/7   37/30/34/+7/0.54/0.7/000/00           32 ENE AERO 31 ENE RMY 32
2/8   49/25/37/+10/T/0.0/136/22             25 W   AERO 25 W   RMY 31
2/9   35/8/22/-5/1.60/16.9/000/00           54 NNE AERO 53 NNE RMY 54 TSTM
2/10  24/7/16/-11/T/T/623/100               43 WNW AERO 50 WNW RMY 48
2/11  27/15/21/-6/0.14/2.9/000/00           21 SE  AERO 20 SE  RMY 19
2/12  32/17/25/-2/0.71/5.6/000/00           22 ENE AERO 28 ENE RMY N/A
2/13  32/20/26/-2/0.27/2.2/032/05           48 NW  AERO 60 NW  RMY 61
2/14  35/16/26/-2/0.00/0.0/…/..           23 NW  AERO 24 NW  RMY 24
2/15  40/25/33/+5/0.17/1.2/…/..           31 SE  AERO 33 NW  RMY N/A
2/16  33/23/28/0/0.17/1.6/…/..            38 WNW AERO 38 WNW RMY 40
2/17  38/19/29/+1/0.00/0.0/…/..           36 WNW AER0 35 WNW RMY 35
2/18  50/24/37/+8/0.00/0.0/…/..           31 SSW AERO 33 SSW RMY 34
2/19  58/42/50/+21/0.00/0.0/…/..          32 W   AERO 33 W   RMY 32
2/20  42/29/36/+7/0.00/0.0/…/..           25 NW  AERO 28 NW  RMY 27
2/21  44/25/35/+6/0.00/0.0/…/..           24 SSE AERO 22 SSW RMY 24
2/22  56/34/45/+16/T/0.0/…/..             24 SSW AERO 24 SSW RMY N/A

2/23  Low temp since midnight is 44F; normal low is now 20F

DAILY RECORDS FOR FEBRUARY 2017

2/09/17: NEW DAILY RECORD MAXIMUM SNOWFALL OF 16.9 INS.
PREVIOUS RECORD WAS 14.0 INS. SET IN 2015

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

RECORDS FOR FEBRUARY 23
HIGH 62F IN 1990
LOW -8F IN 1907
PRECIP 1.48 INCHES IN 1967
SNOWFALL 10.6 INCHES IN 1967
PEAK GUST 73 MPH WNW IN 1974

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

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Kaitlin Geagan