Tuesday, April 5, 2022

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

TUESDAY, APRIL 5, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0520E
SUNSET:  1815E

A BEAUTIFUL SPRING DAY HERE AT BLUE HILL….

We’re observing plenty of sunshine today with a sky decorated with
some high and mid level clouds. The wind has been light, so it’s
only helping to add to the splendor of the day, along with
temperatures popping into the low 60s!

Visibility has been good today starting off around 70 miles, but
slipping a bit this afternoon to around 60 miles.

The high so far today is 60F, which is 8 degrees above the normal
maximum of 52F. The low since midnight is 37F, which is 3 degrees
above the normal minimum of 34F.

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PRELIMINARY STATS FOR MARCH 2022

TEMPERATURE, Deg. F
Avg. Max. 49.6 [+5.5] Avg. Min. 29.5 [+2.6] Mean      39.8 [+4.3] 24-hour corrected mean: 38.9
Max. for month: 73F on the 18th
Min. for month: 10F on the 4th

HEATING DEGREE DAYS
Total heating units:    780 [-135] Total for the season:  4863 [-484] Total for last season: 4822

PRECIPITATION, Inches
Total: 3.17 [-2.35] Greatest in 24 hrs: 1.07 on the 24th-25th

SNOWFALL, Inches
Total: 4.1 ins. [-10.9] Greatest in 24 hrs: 3.3 ins. from the 9th-10th

WIND, mph
Avg. uncorrected wind speed: 12.6 mph
Avg. corrected wind speed:   13.0 mph
Prevailing wind direction:   WNW [18%] Peak gust and direction:  59 WNW on the 7th

SUNSHINE:
Campbell-Stokes card minutes: 11370 of a possible 21516 or 53%
Astronomical total minutes: 11755 of a possible 22245 or 53%

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Today’s Observations:

7 A.M.
Weather: Clear, few cirrus distant E-S-WSW
Temperature: 42F; Dew Point: 26F; Relative Humidity: 52%
Wind: WNW @ 6 kts, wind light
Sea-level pressure: 1017.8 mb; 30.06 in. Hg: rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 42F
6-hr Min temp: 37F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 70 178/42/26/2906/006/ FEW CI DSNT E-S-WSW WND LGT/
8/001 51013 10042 20037

10 A.M.
Weather: Thin Broken cirrus, few stratocumulus distant W-NW,
few cirrostratus distant W-WNW
Temperature: 52F; Dew Point: 27F; Relative Humidity: 37%
Wind: WSW @ 5 kts, wind light and variable
Sea-level pressure: 1018.0 mb; 30.06 in Hg: rising, then falling
Visibility: 70 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E300 -BKN 70 180/52/27/2405/006/ FEW SC DSNT W-NW
FEW CS DSNT W-WNW WND L/V/ 8/505 50002

1 P.M.
Weather: Broken altocumulus, broken cirrus, few stratocumulus all quadrants,
few altocumulus lenticularis all quadrants
Temperature: 60F, Dew point: 27F; Relative Humidity: 28%
Wind: SW @ 9 kts
Sea-level pressure: 1016.7 mb; 30.02 in Hg: falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 60F
6-hr Min temp: 42F
6-hr Precip:  0.00 ins
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E90 BKN 250 BKN 60 167/60/27/2209/002/ FEW SC ALQDS
FEW ACSL ALQDS/ 8/544 56013 10060 20042

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SUMMARY FOR MONDAY, APRIL 4, 2022

TEMPERATURE (DEGREES F)
MAX…….56     NORMAL…..51
MIN…….35     NORMAL…..33
MEAN……46     NORMAL…..42

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….+4
TOTAL DEPARTURE FOR THE MONTH………………+13 [+3.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………19  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH……………81  DEPARTURE…….-13
TOTAL HEATING UNITS FOR THE SEASON…………4944  DEPARTURE……-497
TOTAL HEATING UNITS LAST SEASON TO DATE…….4926  DEPARTURE…….+18

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE SEASON……………0  DEPARTURE………0
TOTAL COOLING UNITS LAST SEASON TO DATE……….0  DEPARTURE………0

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….35 NW  @  1:03 P.M.
AEROVANE……………….30 NW  @  5:50 A.M.
VECTOR #2 (Instantaneous)..36     @  1:03 P.M.
DAVIS #2 ………………32 NW  @  1:03 P.M.
RMY #2 (Instantaneous)…..34 NW  @  1:03 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………………23 NW  @  1:04 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24     @  1:04 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 WNW @  1:04 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 NW  @  1:04 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…….11.8 NW [282 total miles] VECTOR #2……………..12.2
DAVIS #2………………12.0 NNW
RMY #2………………..11.9 NW
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…….0.00  DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH………….0.46  DEPARTURE…..-0.21
TOTAL PRECIPITATION FOR THE YEAR………….13.77  DEPARTURE…..-0.92

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE MONTH……………….0.0  DEPARTURE……-0.8
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..70.7  DEPARTURE……+3.0

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/+6/0.00/0.0/673/97         55 WNW AERO 53 WNW RMY 56
3/09  38/29/34/+1/0.36/3.3/000/00         19 NNW AERO 17 NNW RMY 20
3/10  49/26/38/+4/0.00/0.0/504/72         18 NW  AERO 16 SSW RMY 18
3/11  55/32/44/+10/0.00/0.0/640/91        27 S   AERO 25 S   RMY 27
3/12  46/20/33/-1/0.49/0.6/000/00         59 NW  AERO 60 NW  RMY 50
3/13  34/17/26/-8/0.00/0.0/666/94         54 WNW AERO 51 WNW RMY 55
3/14  52/25/39/+4/0.00/0.0/584/82         32 WNW AERO 28 W   RMY 33
3/15  62/39/51/+16/0.03/0.0/386/54        27 SW  AERO 23 SW  RMY 27
3/16  56/36/46/+11/0.00/0.0/395/55        25 S   AERO 22 S   RMY 25
3/17  55/37/46/+10/0.06/0.0/000/00        23 SSW AERO 20 SSE RMY 23
3/18  73/46/60/+24/T/0.0/542/75           20 W   AERO 16 WNW RMY 21
3/19  53/42/48/+12/0.21/0.0/000/00        25 NW  AERO 20 NW  RMY 25
3/20  62/42/52/+15/0.01/0.0/190/26        35 NW  AERO 35 NW  RMY 36
3/21  57/37/47/+10/T/0.0/644/88           51 WNW AERO 48 WNW RMY 50
3/22  50/31/41/+4/0.00/0.0/632/86         51 NW  AERO 47 NW  RMY 53
3/23  47/26/37/-1/T/0.0/480/65            20 NNW AERO 16 NNW RMY 19
3/24  42/34/38/0/0.81/0.0/000/00          32 ESE AERO 29 ESE RMY 34
3/25  59/35/47/+9/0.33/0.0/409/55         34 NNE AERO 32 NNE RMY 33
3/26  55/38/47/+8/0.11/0.0/216/29         22 NW  AERO 18 SW  RMY 22
3/27  49/26/38/-1/0.00/0.0/554/74         36 WNW AERO 35 WNW RMY 39
3/28  34/17/26/-13/T/0.2/278/37           40 NW  AERO 37 NW  RMY 40
3/29  37/15/26/-14/0.00/0.0/710/94        38 WNW AERO 35 NW  RMY 38
3/30  48/23/36/-4/T/0.0/599/79            36 NW  AERO 31 WNW RMY 36
3/31  62/37/50/+9/0.42/0.0/000/00         57 SSW AERO 58 SSW RMY 61

DAILY RECORDS FOR MARCH 2022

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

3/18/22: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 73F,
SURPASSES PREVIOUS RECORD OF 72F SET IN 2012

PRELIMINARY CLIMATE SUMMARY FOR APRIL 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

4/01  57/35/46/+5/0.41/0.0/183/24         56 WNW AERO 55 WNW RMY 58
4/02  52/34/43/+2/0.00/0.0/697/91         45 WNW AERO 43 WNW RMY 47
4/03  51/36/44/+2/0.03/0.0/215/28         23 NE  AERO 18 NE  RMY 23
4/04  56/35/46/+4/0.02/0.0/610/79         35 NW  AERO 30 NW  RMY 34

4/05 The low since midnight is 37F, the daily normal low is 34F

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

RECORDS FOR APRIL 5
HIGH 81 IN 1928
LOW 15 IN 1995
PRECIP 2.15 IN. IN 1987
SNOWFALL 4.0 IN. IN 1898
PEAK GUST 76 MPH WNW IN 1963

RECORDS FOR APRIL 6
HIGH 82 IN 1921
LOW 16 IN 1982
PRE 1.72 INS IN 1886
SNOW 12.3 INS IN 1982
WIND 71e MPH WNW IN 1940

TODAY’S REPORT PREPARED BY: Matt Douglas