Tuesday, February 26, 2019

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, FEBRUARY 26, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

ANOTHER BREEZY AND BELOW SEASONABLE DAY
WITH CLEAR SKIES….

Following an overnight pressure spike of more
than 20 millibars, we observed fair weather and
still windy conditions. Yesterday’s highest gust
was 66 mph, with a daily average speed of 31.2 mph.
The record peak gust for yesterday is 76 mph, set
in 2016. Today, we observed northwesterly winds
around 20 mph, with a max gust of 44 mph following
the 1 P.M. observation. The high so far today is
29F, 10 degrees below the normal of 39F. The low
since midnight is 19F, 2 degrees below the daily
normal minimum of 21F.

Today’s Observations:

7 A.M.
Weather: Few cumulus in all directions
Temperature: 20F; Dew Point: -1F; Wind: NW at 20G21 kts,
Peak wind: 40 MPH (35 kts) NW at 5:33 A.M.
Sea-level pressure: 30.15 ins. Hg, rising rapidly
Visibility: 70 miles
6-hr Max temp: 23F
6-hr Min temp: 19F
24-hr Precip:  0.41 ins.
24-hr snowfall: 0.0 ins.
Snow depth: Trace
BHO SA 1155 CLR 70 210/20/-1/3120G21/015/ FEW CU ALQDS
PK WND 3135/1033/ 8/100 51035 10023 20019

10 A.M.
Weather: Few cumulus, few cirrus SE-SW
Temperature: 23F; Dew Point: 0F; Wind: NW at 22G33 kts
Peak wind: 41 MPH (36 kts) NW at 9:23 A.M.
Sea-level pressure: 30.16 ins. Hg, falling then rising
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 80 215/23/0/3122G33/016/ FEW CU ALQDS
FEW CI SE-SW PK WND 3036/23/ 8/101 50005

1 P.M.
Weather: Few cumulus in all directions
Temperature: 28F; Dew Point: 1F; Wind: NW at 20G35 kts,
Peak wind: 43 MPH (56 kts) NW at 10:13 A.M.
Sea-level pressure: 30.13 ins. Hg, falling steadily
Visibility: 80 miles
6-hr Max temp: 29F
6-hr Min temp: 20F
6-hr Precip:  0.00 ins.
6-hr snowfall: 0.0 ins.
Snow depth: Trace
BHO SA 1755 CLR 80 205/28/1/3120G35/013/ FEW CU ALQDS
PK WND 3137/1513/ 8/100 58010 10029 20020

SUMMARY FOR MONDAY, FEBRUARY 25, 2019

TEMPERATURE (DEGREES F)
MAX…..37   NORMAL…..39
MIN…..25   NORMAL…..21
MEAN….31   NORMAL…..30

DEPARTURE FROM 30-YEAR NORMAL……………………+1
TOTAL DEPARTURE FOR THE MONTH…………………..+77 [+2.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..34   DEPARTURE………-1
TOTAL HEATING UNITS FOR THE MONTH………….855   DEPARTURE……..-79
TOTAL HEATING UNITS FOR THE SEASON………..4351   DEPARTURE…….-113
TOTAL HEATING UNITS LAST SEASON TO DATE……4057   DIFFERENCE……+294

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..66 W   AT 11:08 A.M.
AERO…………………….59 W   AT  4:38 P.M.
ASOS…………………….69 WNW AT  4:44 P.M.
DAVIS……………………69 WNW AT  4:41 P.M. RMY M
FASTEST MILE FOR YESTERDAY………………….54 W   AT  6:48 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….46 W   AT  4:54 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………51 WSW AT  6:51 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..31.2 W
ASOS…………………..28.7
DAVIS………………….30.2 WSW [250 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……….3.34  DEPARTURE…….-0.24
ASOS…………..3.34
TOTAL PRECIPITATION FOR THE YEAR………..8.69  DEPARTURE…….+0.76
ASOS…………..8.82

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………T  DEPARTURE……..-0.5
TOTAL SNOWFALL FOR THE MONTH…………….8.6  DEPARTURE……..-3.9
TOTAL SNOWFALL FOR THE SEASON…………..21.0  DEPARTURE…….-24.6

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 38/27/33/+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 43/30/37/+8/…./0.0/…/..          22 NW  AERO 21 NW  RMY 23
02/23 38/24/31/+1/0.00/0.0/…/..          18 NNW AERO 16 NNW RMY N/A
02/24 45/30/38/+8/…./…/…/..          41 W   AERO 37 W   RMY 47
02/25 37/25/31/+1/…./…/…/..          66 W   AERO 59 W   RMY M

02/26 Low temp since midnight is 19F; normal low is 21F
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: Benjamin Turner