Friday, March 8, 2019

| March 8, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, MARCH 8, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

WARMER THAN YESTERDAY WITH LESS VISIBILITY;
AND SKIES BECOMING OVERCAST IN THE AFTERNOON….

We observed an average visibility of 60 miles
throughout the day, with it dropping slightly to
50 miles at the 1 P.M. observation. Conditions
were clear from 7 A.M. to 10 A.M., with skies
gradually becoming overcast with a translucent
cirrostratus layer in the afternoon. Temperatures
today moved closer to normal, but still remained
below normal. The high temperature so far today
is 33F, 9 degrees below the daily normal maximum
of 42F. The low since midnight is 11F, 13 degrees
below the normal minimum of 24F.

PRELIMINARY STATS FOR FEBRUARY 2019

TEMPERATURE, Deg. F
Avg. Max. 37.3 [+0.5]
Avg. Min. 21.6 [+2.5]
Mean      29.5 [+1.6]
24-hour corrected mean: 29.2
Max. for month: 62F on the 5th
Min. for month: 5F  on the 1st

HEATING DEGREE DAYS
Total heating units:    990 [-47]
Total for the season:  4486 [-82]
Total for last season: 4122

PRECIPITATION, Inches
Total: 3.61 [-0.46]
Greatest in 24 hrs: 1.14 ins. on the 12th-13th

SNOWFALL, Inches
Total: 12.1 [-1.8]
Greatest in 24 hrs: 4.7 ins. on the 17th-18th

WIND, mph
Avg. uncorrected wind speed: 12.9
Avg. corrected wind speed: 13.3
Prevailing wind direction: WNW at 22%
Peak gust and direction: 66 W on 25th

SUNSHINE:
Campbell-Stokes card minutes: 9132 minutes of possible 17148 or 53%
Astronomical total minutes:   9476 minutes of possible 17766 or 53%

Today’s Observations:

7 A.M.
Weather: Clear, few distant cirrostratus
Temperature: 14F; Dew Point: 1F; Wind: SSW at 11G15 kts
Sea-level pressure: 30.39 ins. Hg, rising steadily
Visibility: 60 miles, thin smoke layer in all directions
6-hr Max temp: 14F
6-hr Min temp: 11F
24-hr Precip:  0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 11 ins.
BHO SA 1155 CLR 60 290/14/1/2511G15/039/ FEW CS THN
K LYR ALQDS/ 8/005 4/011 51009 10014 20011

10 A.M.
Weather: Clear, few distant cirrostratus
Temperature: 24F; Dew Point: 7F; Wind: SW at 11G15 kts
Sea-level pressure: 30.38 ins. Hg, falling steadily
Visibility: 50 miles, distant haze
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 50 288/24/7/2411G15/038/ FEW CS DSNT
HZ ALQDS/ 8/005 58002

1 P.M.
Weather: Broken cirrostratus
Temperature: 32F; Dew Point: 9F; Wind: SW at 12G18 kts
Sea-level pressure: 30.31 ins. Hg, falling steadily
Visibility: 50 miles, distant haze
6-hr Max temp: 33F
6-hr Min temp: 14F
6-hr Precip:  0.00 ins.
6-hr snowfall: 0.0 ins.
Snow depth: 11 ins.
BHO SA 1755 E250 BKN 50 264/32/9/2412G18/031/ DSNT HZ ALQDS/
8/007 4/011 58024 10033 20014

SUMMARY FOR THURSDAY, MARCH 7, 2019

TEMPERATURE (DEGREES F)
MAX…..26   NORMAL…..42
MIN……6   NORMAL…..24
MEAN….16   NORMAL…..33

DEPARTURE FROM 30-YEAR NORMAL……………………-17
TOTAL DEPARTURE FOR THE MONTH……………………-53 [-7.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..49   DEPARTURE……..+17
TOTAL HEATING UNITS FOR THE MONTH………….285   DEPARTURE……..+53
TOTAL HEATING UNITS FOR THE SEASON………..4771   DEPARTURE……..-29
TOTAL HEATING UNITS LAST SEASON TO DATE……4319   DIFFERENCE……+452

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..35 W   AT  3:34 P.M.
AERO…………………….18 W   AT 12:17 P.M.
ASOS…………………….33 W   AT  3:35 P.M.
DAVIS……………………35 W   AT 12:19 P.M. RMY 34
FASTEST MILE FOR YESTERDAY………………….26 W   AT  3:32 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….24 W   AT  3:32 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………26 SW  AT  3:32 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..13.6 W
ASOS…………………..14.0
DAVIS………………….14.1 WSW [250 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE…….-0.17
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….2.32  DEPARTURE…….+1.11
ASOS…………..2.35
TOTAL PRECIPITATION FOR THE YEAR……….11.26  DEPARTURE…….+1.63
ASOS………….11.40

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……..-0.5
TOTAL SNOWFALL FOR THE MONTH……………20.0  DEPARTURE…….+16.4
TOTAL SNOWFALL FOR THE SEASON…………..44.5  DEPARTURE……..-6.1

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/+8/0.35/T/396/67            24 NNW AERO 23 NNW RMY N/A
02/07 37/31/34/+7/0.35/0.0/000/00          28 ENE AERO 24 ENE RMY 28
02/08 51/27/39/+12/0.07/0.0/204/34         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/-4/0.90/2.8/000/00          32 E   AERO 30 E   RMY 26
02/13 39/29/34/+6/0.26/0.1/018/03          36 W   AERO 32 W   RMY 36
02/14 37/26/32/+4/0.00/0.0/594/97          44 WNW AERO 42 WNW RMY 45
02/15 49/29/39/+11/0.11/0.0/060/10         40 S   AERO 40 S   RMY 44
02/16 44/26/35/+7/0.00/0.0/504/82          25 NW  AERO 25 NW  RMY N/A
02/17 37/19/28/0/0.01/T/618/100            30 NNW AERO 25 NNW RMY N/A
02/18 30/16/23/-6/0.41/4.7/000/00          35 NW  AERO 36 NW  RMY 41
02/19 30/10/20/-9/0.00/0.0/618/99          35 NW  AERO 33 NW  RMY N/A
02/20 26/12/19/-10/0.12/0.3/000/00         16 WNW AERO 14 SSW RMY N/A
02/21 43/21/32/+3/0.33/0.7/294/47          36 W   AERO 33 W   RMY 38
02/22 43/30/37/+8/0.00/0.0/504/80          22 NW  AERO 21 NW  RMY 23
02/23 38/24/31/+1/0.00/0.0/336/53          18 NNW AERO 16 NNW RMY N/A
02/24 45/30/38/+8/0.40/0.0/000/00          41 W   AERO 37 W   RMY 47
02/25 37/25/31/+1/0.03/T/336/57            66 W   AERO 59 W   RMY M
02/26 29/14/22/-8/0.00/0.0/642/100         46 WNW AERO 39 WNW RMY 47
02/27 22/9/16/-15/0.10/1.2/180/28          35 WNW AERO 26 WNW RMY N/A
02/28 28/15/22/-9/0.17/2.3/486/75          22 NW  AERO 18 NW  RMY 22

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

03/01 38/17/28/-3/…./…/…/..           16 NNW AERO 13 NNW RMY 22
03/02 31/27/29/-2/…./…/…/.. 29 NNE AERO 22 NNE RMY 30
03/03 40/25/33/+1/…./…/…/..           21 ESE AERO 14 ESE RMY N/A
03/04 35/18/27/-5/…./…/…/..           33 W   AERO 18 W   RMY 32
03/05 29/10/20/-12/0.00/0.0/…/..          28 WNW AERO 12 SW  RMY N/A
03/06 24/10/17/-15/0.00/0.0/…/..          40 WNW AERO 25 WNW RMY 41
03/07 26/6/16/-17/0.00/0.0/…/..           35 W   AERO 18 W   RMY 34

03/08 Low temp since midnight is 11F; normal low is 24F

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

RECORDS FOR MARCH 8
HIGH 66 IN 2012
LOW 2 IN 1986
PRECIP 2.20 INS. IN 2008
SNOWFALL 18.0 INS. IN 2013
PEAK GUST 69 MPH SSW IN 2008

RECORDS FOR MARCH 9
HIGH 75 IN 2016
LOW 1 IN 2007
PRECIP 2.67 INS. IN 1998
SNOWFALL 6.3 INS. IN 2013
PEAK GUST 102e MPH S IN 1942 [RECORD FOR MONTH]

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

Leave a Reply