Sunday, February 19, 2023

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

SUNDAY, FEBRUARY 19, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0635E
SUNSET:  1721E

SOME MORNING SUNSHINE, THEN OVERCAST AND MILD….

The day started off with high thin clouds allowing for some
sunshine this morning. However the clouds thickened as the
day progressed, leaving us with overcast skies this
afternoon.

Temperatures are milder today than yesterday with readings
reaching the mid 40s.

The wind started the day light and variable, but has since
freshened from the south this afternoon. Gusts over 20mph
have been occurring. The average speed for the day is up to
around 12mph.

Visibility has been limited all day due to haziness. It’s
been holding in the 40-50 mile range most of the day.

The high so far today is 44F, which is 6 degrees above the
normal maximum of 38F. The low since midnight is 30F, which
is 10 degrees above the normal low of 20F.

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Today’s Observations:

7 A.M.
Weather: Broken cirrostratus, thin overcast cirrus, few breaks
in overcast SE-SW-W
Temperature: 31F; Dew Point: 18F; Relative Humidity: 58%
Wind: W @ 7 kts
Sea-level pressure: 1029.4 mb; 30.40 in. Hg: rising, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 32F
6-hr Min temp: 30F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E220 BKN 250 -OVC 40 294/31/18/2607/040/
FEW BINOVC SE-SW-W HAZY/ 8/006 53012 10032 20030

10 A.M.
Weather: Scattered cirrostratus, thin broken cirrus
Temperature: 40F; Dew Point: 24F; Relative Humidity: 51%
Wind: NNE @ 3 kts, wind light and variable
Sea-level pressure: 1028.7 mb; 30.38 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 220 SCT E250 -BKN 40 287/40/24/0203/038/ HAZY
WND L/V/ 8/006 58007

1 P.M.
Weather: Overcast cirrostratus
Temperature: 44F; Dew Point: 23F; Relative Humidity: 44%
Wind: S @ 11G16 kts
Sea-level pressure: 1026.3 mb; 30.31 in. Hg: falling, then more rapidly
Visibility: 50 miles, hazy
6-hr Max temp: 44F
6-hr Min temp: 31F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E220 OVC 50 263/44/23/1911G16/031/ HAZY/
8/007 58024 10044 20031

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SUMMARY FOR SATURDAY, FEBRUARY 18, 2023

TEMPERATURE (DEGREES F)
MAX…….39   NORMAL…..38
MIN…….19   NORMAL…..20
MEAN……29   NORMAL…..29

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….0
TOTAL DEPARTURE FOR THE MONTH……………….+121 [+6.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………36  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………..558  DEPARTURE……-121
TOTAL HEATING UNITS FOR THE SEASON…………3381  DEPARTURE……-701
TOTAL HEATING UNITS LAST SEASON TO DATE…….3734  DEPARTURE……-353

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.

420C (Official)…………41 NW  @  1:12 A.M.
VECTOR #1 (1-Sec)……….42 NNW @ 12:27 A.M.
VECTOR #2 (1-Sec)……….47     @ 12:23 A.M.
DAVIS #1……………….41 NW  @ 12:28 A.M.
DAVIS #2 ………………42 NNW @ 12:28 A.M.
RMY #1 (Instantaneous)…..M
RMY #2 (Instantaneous)…..47 NNW @ 12:23 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……44     @  1:12 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………35 NNW @ 12:28 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..31     @ 12:28 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30     @ 12:24 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………31 NW  @ 12:28 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 NW  @ 12:28 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..M
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..29 NNW @ 12:28 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………30     @ 12:28 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……12.4 WSW [297 total miles] VECTOR #1…………….M
VECTOR #2…………….12.6
DAVIS #1……………..12.1 WNW
DAVIS #2……………..12.6 W
RMY #1……………….M
RMY #2……………….12.4 WNW
RICHARDS (C5C)………..M

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.07 DEPARTURE…..-2.39
TOTAL PRECIPITATION FOR THE YEAR……………6.86 DEPARTURE…..-0.10

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………..0.2 DEPARTURE…..-11.7
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……15.1 DEPARTURE…..-30.5

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PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
VEC1: Vector #1 1-second gust
RMY:  R.M. Young wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

2/1   30/18/24/-2/T/T/552/92              17 NW   VEC1 N/A    RMY 20
2/2   38/19/29/+3/0.00/0.0/518/86         25 SW   VEC1 N/A    RMY 29
2/3   28/-11/9/-17/T/T/557/92             56 WNW  VEC1 N/A    RMY 64
2/4   14/-14/0/-26/0.00/0.0/473/78        45 NW   VEC1 N/A    RMY 51
2/5   49/14/32/+5/0.00/0.0/359/59         38 SW   VEC1 N/A    RMY 43
2/6   47/30/39/+12/0.00/0.0/025/04        28 NE   VEC1 N/A    RMY 29
2/7   31/22/27/0/0.01/0.1/461/75          29 SSW  VEC1 N/A    RMY 33
2/8   46/31/39/+12/0.00/0.0/413/67        30 NW   VEC1 N/A    RMY 34
2/9   49/33/41/+14/T/0.0/149/24           31 SSE  VEC1 N/A    RMY 32
2/10  60/31/46/+19/0.00/0.0/603/97        43 W    VEC1 N/A    RMY 51
2/11  43/31/37/+10/0.00/0.0/625/100       41 WNW  VEC1 N/A    RMY 46
2/12  48/28/38/+10/0.00/0.0/339/54        22 SW   VEC1 N/A    RMY 24
2/13  42/33/38/+10/0.00/0.0/069/11        28 NE   VEC1 N/A    RMY 36
2/14  50/34/42/+14/0.00/0.0/…/..        30 NW   VEC1 33     RMY 35
2/15  56/35/46/+18/0.00/0.0/…/..        39 SSW  VEC1 44     RMY 49
2/16  61/50/56/+28/T/0.0/…/..           29 W    VEC1 31     RMY 34
2/17  56/23/40/+11/0.06/0.1/…/..        44 NNW  VEC1 46     RMY 46
2/18  39/19/29/0/0.00/0.0/…/..          41 NW   VEC1 42     RMY 47

2/19  The low since midnight is 30F, the daily normal low is 20F

DAILY RECORDS

02/03/2023: NEW RECORD MINIMUM TEMPERATURE OF -11F,
THIS BEATS THE OLD RECORD OF -7F SET IN 1955

02/04/2023: NEW RECORD MINIMUM TEMPERATURE OF -14F,
THIS BEATS THE OLD RECORD OF -4F SET IN 1886 AND 1908

02/10/2023: NEW RECORD MAXIMUM TEMPERATURE OF 60F,
THIS BEATS THE OLD RECORD OF 56F SET IN 1909

02/16/2023: NEW RECORD HIGH MINIMUM TEMPERATURE OF 50F,
THIS BEATS THE OLD RECORD OF 41F SET IN 1976. THIS ALSO
TIES THE WARMEST MINIMUM TEMPERATURE FOR FEBRUARY SET
IN 2018

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

RECORDS FOR FEBRUARY 19
HIGH 66F IN 1981
LOW -5F IN 1923
PRECIP 2.73 INCHES IN 1972
SNOWFALL 8.9 INCHES IN 1964
PEAK GUST 76 MPH ENE IN 1972

RECORDS FOR FEBRUARY 20
HIGH 68F IN 2018
LOW -4F IN 1966
PRECIP 1.90 INCHES IN 1934
SNOWFALL 15.0 INCHES IN 1921,1934
PEAK GUST 78 MPH NW IN 1972

TODAY’S REPORT PREPARED BY: Matt Douglas