Sunday, February 26, 2017

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 26, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

Highest February Daily Maximum Temperature, deg F (1885-2017)

1) 71 on 24 Feb 2017
2) 68 on 24 Feb 1985
68 on 25 Feb 2017
4) 67 on 26 Feb 1957
67 on 25 Feb 1976
67 on 23 Feb 2017
7) 66 on 20 Feb 1930
66 on 19 Feb 1981
9) 65 on 18 Feb 1981
65 on 01 Feb 1989

Yesterday’s high temperature of 68 set a new record for the day
making it 3 days in a row that a new record high has been
recorded.  The maximum low temperature record was also tied right
at midnight as the low for the day hit 44.

Temperatures have taken the plunge since then falling into the mid
30s on strong northwesterly winds, which have been gusting into the
40s all day.

Today’s Observations:

7 A.M.
Weather: Broken Stratocumulus
Temperature: 35F; Dew Point: 22F; Wind: WNW at 19G31 kts,
Peak Wind: WNW 31 MPH at 6:52 A.M.
Sea-level pressure: 29.70 ins. Hg, rising then more slowly
Visibility: 70 miles
6-hr Max temp: 40F
6-hr Min temp: 35F
24-hr precip: 0.15 inches
24-hr snowfall: 0.0 in.
BHO SA 1155 E45 BKN 70 053/35/22/2919G31/970/ PK WND 2931/52/
8/5// 51038 MANUAL 70015 ASOS 70017 10040 20035

10 A.M.
Weather: Scattered Stratocumulus
Temperature: 36F; Dew Point: 21F; Wind: WNW at 25G38 kts,
Peak wind: WNW 40 MPH
Sea-level pressure: 29.79 ins. Hg, rising then more slowly
Visibility: 70 miles
BHO SA 1455 50 SCT 70 087/36/21/2925G38/979/ PK WND 2840/13/
8/500 51034

1 P.M.
Weather: Scattered Stratocumulus, Few Cirrus Distant W-NW
Temperature: 40F; Dew Point: 19F; Wind: NW at 19G30 kts,
Peak Wind: W 32 MPH
Sea-level pressure: 29.82 ins. Hg, rising then more slowly
Visibility: 80 miles
BHO SA 1755 50 SCT 80 097/40/19/3019G30/982/ FEW CI DSNT W-NW
PK WND 3032/18/ 8/508 51010 10040 20035

SUMMARY FOR SATURDAY, FEBRUARY 25, 2017

TEMPERATURE (DEGREES F)
MAX…..68   NORMAL…..39
MIN…..44   NORMAL…..21
MEAN….56   NORMAL…..30

DEPARTURE FROM 30-YEAR NORMAL……………………+26
TOTAL DEPARTURE FOR THE MONTH…………………..+155 [+6.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………9   DEPARTURE………-26
TOTAL HEATING UNITS FOR THE MONTH………….777   DEPARTURE……..-157
TOTAL HEATING UNITS FOR THE SEASON………..3804   DEPARTURE……..-660
TOTAL HEATING UNITS LAST SEASON TO DATE……3599   DIFFERENCE…….+229

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….37 WNW AT 11:03 P.M.
AERO……………………35 WNW AT 11:03 P.M.
ASOS……………………32 WNW AT 11:04 P.M.
DAVIS…………………..32 NW  AT 12:05 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………23 WNW AT 11:04 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………23 WNW AT 11:04 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..23 WNW AT 11:04 P.M.
AVERAGE WIND SPEED AND DIRECTION………….15.4 SSE
ASOS………………….15.2
DAVIS…………………13.3 SSW [199 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.15  DEPARTURE……-0.01
ASOS…………..0.17
TOTAL PRECIPITATION FOR THE MONTH……….3.78  DEPARTURE……+0.20
ASOS…………….NA
TOTAL PRECIPITATION FOR THE YEAR………..9.28  DEPARTURE……+1.35
ASOS…………….NA

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH……………31.5  DEPARTURE……+19.0
TOTAL SNOWFALL FOR THE SEASON…………..52.3  DEPARTURE…….+6.7

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

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  67/40/54/+24/0.00/0.0/…/..          36 SSW AERO 35 SSW RMY 37
2/24  71/47/59/+29/0.00/0.0/…/..          41 SSW AERO 41 SSW RMY 44
2/25  68/44/56/+26/…./0.0/…/..          37 WNW AERO 35 WNW RMY N/A

2/26  Low temp since midnight is 35F; normal low is now 21F

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
2/23/17: NEW DAILY RECORD MAXIMUM TEMPERATURE OF 67F
PREVIOUS RECORD WAS 62F SET IN 1990
2/24/17: NEW DAILY RECORD MAXIMUM TEMPERATURE OF 71F
PREVIOUS RECORD WAS 68F SET IN 1985
2/24/17: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 47F
PREVIOUS RECORD HIGH MINIMUM TEMPERATURE OF 43F
2/25/17: NEW DAILY RECORD MAXIMUM TEMPERATURE OF 68F
PREVIOUS RECORD WAS 67F SET IN 1976
2/25/17: TIED DAILY RECORD HIGH MINIMUM TEMPERATURE OF 44F
PREVIOUS RECORD SET IN 1930

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: Robert Millette