Sunday, March 13, 2022

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

SUNDAY, MARCH 13, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0559E
SUNSET:  1748E

WINDY AND COLD WITH A COMPLETE CHANGE IN AIR MASS….

We observed 90 miles of visibility today at the 10 A.M.
observation, that is perfect visibility from the summit.
Wind was significant today, with an average speed of
15 mph and frequent gusts around 30 mph.

Snowfall began during the frontal passage yesterday
afternoon, leaving us with 0.6 inches. Event rainfall
totaled 0.47 inches.

The monthly rain total is 1.19 inches, -0.90 inches below
normal. The monthly snow total is 3.9 inches, -3.3 inches
below normal for almost halfway through March.

The high so far today is 32F, which is 12 degrees below the
normal maximum of 44F. The low since midnight is 18F, which
is 8 degrees below the normal minimum of 26F.

————————————————————–
PRELIMINARY STATS FOR FEBRUARY 2022

TEMPERATURE, Deg. F
Avg. Max. 40.9 [+3.9] Avg. Min. 21.3 [+1.8] Mean      31.1 [+2.9] 24-hour corrected mean: 31.1
Max. for month: 67F on the 23rd
Min. for month: 2F on the 15th

HEATING DEGREE DAYS
Total heating units:    942 [-87] Total for the season:  4039 [-359] Total for last season: 4045

PRECIPITATION, Inches
Total: 5.55 [+1.55] Greatest in 24 hrs: 1.16 ins. from the 25th-26th

SNOWFALL, Inches
Total: 18.5 ins. [+0.3] Greatest in 24 hrs: 8.4 ins. from the 25th-26th

WIND, mph
Avg. uncorrected wind speed: 13.0 mph
Avg. corrected wind speed:   13.4 mph
Prevailing wind direction:   NW [18%] Peak gust and direction:     66 S on the 22nd

SUNSHINE:
Campbell-Stokes card minutes: 8478 minutes of 17148 possible or 49%
Astronomical total minutes: 8790 minutes of 17786 possible or 49%

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus
Temperature: 18F; Dew Point: 7F; Relative Humidity: 61%
Wind: WNW @ 25G37 kts
Sea-level pressure: 1012.5 mb; 29.89 in. Hg: rising rapidly
Visibility: 60 miles
6-hr Max temp: 19F
6-hr Min temp: 17F
24-hr Precip:  0.47 ins.
24-hr Snowfall: 0.6 ins.
Snow Depth: Trace
BHO SA 1155 CLR 60 125/18/7/3025G37/989/ FEW SC ALQDS PRESRR NEW
SNW PST 24 HRS 0.6 INS PK WND 3042/38/ 8/800 4/000 51087
70047 10019 20017

10 A.M.
Weather: Clear, few stratocumulus
Temperature: 25F; Dew Point: 14F; Relative Humidity: 62%
Wind: WNW @ 13G22 kts, peak of 32 mph WNW at 9:33 A.M.
Sea-level pressure: 1017.7 mb; 30.05 in Hg: rising, then
more slowly
Visibility: 90 miles
3-hr Precip:   0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 90 177/25/14/3013G22/005/ FEW SC ALQDS PK
WND 3028/33/ 8/800 51052

1 P.M.
Weather: Scattered stratocumulus, broken cirrus
Temperature: 31F, Dew point: 16F; Relative Humidity: 53%
Wind: WNW @ 20G25 kts, peak of 35 mph WNW at 12:26 P.M.
Sea-level pressure: 1018.8 mb; 30.08 in Hg: ri rapidly
Visibility: 85 miles
6-hr Max temp: 32F
6-hr Min temp: 18F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0.0 ins.
BHO SA 1755 30 SCT 250 BKN 85 188/31/16/3020G25/008/ PK WND
3030/26/ 8/801 51011 10032 20018

SUMMARY FOR SATURDAY, MARCH 12, 2022

TEMPERATURE (DEGREES F)
MAX…….46     NORMAL…..43
MIN…….20     NORMAL…..26
MEAN……33     NORMAL…..34

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..-1
TOTAL DEPARTURE FOR THE MONTH………………..+41 [+3.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………32  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………..346  DEPARTURE…….-42
TOTAL HEATING UNITS FOR THE SEASON…………3429  DEPARTURE……-391
TOTAL HEATING UNITS LAST SEASON TO DATE…….4417  DEPARTURE…….+12

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….59 NW  @  9:54 P.M.
AEROVANE……………….60 NW  @  9:53 P.M.
VECTOR #2 (Instantaneous)..62     @  9:54 P.M.
DAVIS #2 ………………56 NNW @  9:55 P.M.
RMY #2 (Instantaneous)…..50 NW  @  9:54 P.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………38 NW  @  9:54 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..37     @  9:55 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………38 NW  @  9:55 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..34 NW  @ 10:56 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE…..OUT OF SERVICE D/T RENOVATIONS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……16.3 NW [391 total miles] VECTOR #2…………….15.8
DAVIS #2……………..15.8 NW
RMY #2……………….14.1 WNW
RMY #1…………..OUT OF SERVICE D/T RENOVATIONS
ASOS…………….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1………..OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…………OUT OF SERVICE D/T RENOVATIONS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.47  DEPARTURE…..+0.30
TOTAL PRECIPITATION FOR THE MONTH………….1.19  DEPARTURE…..-0.90
TOTAL PRECIPITATION FOR THE YEAR………….11.33  DEPARTURE…..+0.74

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.6  DEPARTURE……-0.0
TOTAL SNOWFALL FOR THE MONTH……………….3.9  DEPARTURE……-3.3
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..70.5  DEPARTURE…..+11.4

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

2/01  31/16/24/-2/T/0.2/018/03            19 NNE AERO 18 NNE RMY 19
2/02  44/31/38/+12/T/0.0/096/16           20 SSE AERO 21 SSE RMY 20
2/03  47/36/42/+16/0.16/0.0/000/00        27 SSW AERO 28 SSW RMY 28
2/04  49/19/34/+8/1.53/0.7/000/00         35 NNE AERO 37 NNE RMY 38
2/05  21/11/16/-11/0.01/0.2/251/41        25 NW  AERO 25 NW  RMY M
2/06  27/5/16/-11/0.00/0.0/570/93         20 NNW AERO 21 NNW RMY M
2/07  41/21/31/+4/0.59/0.2/000/00         25 ESE AERO 23 ESE RMY 25
2/08  39/30/35/+8/0.27/0.0/006/01         33 W   AERO 32 WNW RMY 34
2/09  42/24/33/+6/0.00/0.0/608/98         30 WNW AERO 29 WNW RMY 31
2/10  50/31/41/+14/0.00/0.0/312/50        36 W   AERO 37 SW  RMY 38
2/11  52/32/42/+15/0.00/0.0/569/91        32 S   AERO 31 S   RMY 34
2/12  59/35/47/+19/0.00/0.0/433/69        50 W   AERO 46 W   RMY 48
2/13  35/22/29/+1/0.41/5.7/000/00         26 WNW AERO 21 WNW RMY 26
2/14  22/6/14/-14/0.13/2.7/418/66         43 WNW AERO 40 WNW RMY 43
2/15  25/2/14/-14/0.00/0.0/636/100        31 W   AERO 28 W   RMY 31
2/16  43/16/30/+2/0.00/0.0/505/79         49 S   AERO 51 S   RMY 52
2/17  59/43/51/22/0.04/0.0/218/34         49 SW  AERO 48 SW  RMY 53
2/18  59/21/40/+11/0.69/0.0/419/65        58 SW  AERO 58 S   RMY 60
2/19  37/15/26/-3/0.02/0.2/349/54         56 WNW AERO 53 WNW RMY 54 TSTM
2/20  32/11/22/-7/0.00/0.0/553/85         42 WNW AERO 42 SW  RMY 44
2/21  55/28/42/+13/0.00/0.0/619/95        36 SW  AERO 35 SW  RMY 39
2/22  52/33/43/+13/0.53/0.0/007/01        66 S   AERO 70 S   RMY 68
2/23  67/30/49/+19/0.00/0.0/309/47        50 WNW AERO 47 SSW RMY 49
2/24  30/20/25/-5/0.00/0.0/053/08         32 NNW AERO 31 NNW RMY 32
2/25  32/15/24/-6/1.16/8.3/000/00         33 ENE AERO 32 NNW RMY 33
2/26  29/10/20/-11/T/0.1/533/80           22 W   AERO 18 W   RMY 21
2/27  39/18/29/-2/0.01/0.2/649/97         41 WNW AERO 41 NNW RMY 43
2/28  27/15/21/-10/0.00/0.0/659/98        30 NW  AERO 26 NNW RMY 30

DAILY RECORDS FOR FEBRUARY 2022

2/12/22: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 59F,
SURPASSES PREVIOUS RECORD OF 56F SET IN 1999

2/17/22: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 43F,
SURPASSES PREVIOUS RECORD OF 38F SET IN 1981

2/23/22: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 67F,
TIES RECORD OF 67F SET IN 2017

PRELIMINARY CLIMATE SUMMARY FOR MARCH 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

3/01  37/15/26/-5/0.08/T/128/19           36 S   AERO 36 S   RMY 37
3/02  43/31/37/+5/0.01/0.0/609/90         29 W   AERO 25 SW  RMY 29
3/03  38/17/28/-4/0.16/T/518/76           40 NNW AERO 35 NW  RMY 40
3/04  34/10/22/-10/0.00/0.0/669/98        31 NW  AERO 28 NW  RMY 31
3/05  39/18/29/-3/0.00/0.0/508/74         24 S   AERO 21 S   RMY 25
3/06  63/35/49/+16/0.01/0.0/186/27        53 SW  AERO 53 WSW RMY 56
3/07  62/47/55/+22/0.08/0.0/035/05        59 WNW AERO 58 WNW RMY 59
3/08  47/30/39/+6/0.00/0.0/…/..         55 WNW AERO 53 WNW RMY 56
3/09  38/29/34/+1/…./…/…/..         19 NNW AERO 17 NNW RMY 20
3/10  49/26/38/+4/…./…/…/..         18 NW  AERO 16 SSW RMY 18
3/11  55/32/44/+10/…./…/…/..        27 S   AERO 25 S   RMY 27
3/12  46/20/33/-1/0.49/0.6/…/..         59 NW  AERO 60 NW  RMY 50

3/13 The low since midnight is 17F, the daily normal low is 26F

DAILY RECORDS FOR MARCH 2022

3/07/22: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 47F,
SURPASSES PREVIOUS RECORD OF 43F SET IN 1894

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

RECORDS FOR MARCH 13
HIGH 72 IN 1990
LOW -1 IN 1885
PRECIP 2.47 INS. IN 1993
SNOWFALL 23.0 INS. IN 2018 [RECORD FOR MONTH] PEAK GUST 76 MPH ENE IN 1993 [THE “STORM OF THE CENTURY”]

RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 7 IN 1896
PRECIP 4.95 INS. IN 2010
SNOWFALL 7.3 INS. IN 2017
PEAK GUST 67 MPH ENE IN 2010

TODAY’S REPORT PREPARED BY: Benjamin Turner