Tuesday, March 22, 2016

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, MARCH 22, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

SNOW STORM TOTAL OF 3.9 INS MELTS TO A TRACE BY TUESDAY
TEMPS TRENDING TOWARD SEASONABLE CONDITIONS TODAY

With the addition of 3.9 inches of snow from yesterday
morning’s snow storm, total snow for the month of March now
reaches 4.4 inches, with a season total of 42.5 inches. The
month of March is currently 5.3 inches below normal for snow,
while the season sine July of 2015 is 14.7 inches below normal.

Temperatures overnight dropped to a perfectly seasonable 28F
by this morning, with the mercury slowly rising through the
day. By today’s 1:00 PM EST observation skies were nearly
completely clear except for a few small cumulus and cirrus
clouds in the distance. Temperatures had risen to a maximum
of 43F so far with gusty westerly winds.

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus WSW-SSW
Temperature: 31F; Dew Point: 17F; Wind: W at 11 kts
Sea-level pressure: 30.05 ins. Hg, rising, then more quickly
Visibility: 75 miles
6-hr Max temp: 31F
6-hr Min temp: 28F
24-hr snowfall: 0.7 ins.
24-hr precip: 0.04 ins.
snow depth: Trace
BHO SA 1155 CLR 75 177/31/17/2811/005/ FEW SC WSW-SSW NEW SNW
PST 24 HRS 0.7 INS/ 8/500 53029 ASOS 70005 MANUAL 70004 10031
20028

10 A.M.
Weather: Clear, few small cumulus in all directions
Temperature: 37F; Dew Point: 15F; Wind: W at 16G24 kts,
Peak Wind: 29 knots W at 9:08 AM EST
Sea-level pressure: 30.09 ins. Hg, rising, then more slowly
Visibility: 75 miles
BHO SA 1455 CLR 75 189/37/15/2716G24/009/ FEW SML CU ALQDS
PK WND 2729/08/ 8/100 51012

1 P.M.
Weather: Clear, small cumlus distant S-N,
few cirrus distant SSE-SW
Temperature: 43F; Dew Point: 14F; Wind: W at 17G26 kts,
Peak Wind: 26 knots W at 12:53 PM EST
Sea-level pressure: 30.05 ins. Hg, rising, then falling and lower
Visibility: 75 miles
6-hr Max temp: 43F
6-hr Min temp: 31F
BHO SA 1755 CLR 75 175/43/14/2617G26/005/ FEW SML CU DSNT S-N
FEW CI DSNT SSE-SW PK WND 2626/53/ 8/101 58014 10043 20031

SUMMARY FOR MONDAY, MARCH 21, 2016

TEMPERATURE (DEGREES F)
MAX…..41   NORMAL…..46
MIN…..26   NORMAL…..28
MEAN….34   NORMAL…..37

DEPARTURE FROM 30-YEAR NORMAL…………………….-3
TOTAL DEPARTURE FOR THE MONTH…………………..+141 [+6.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..31   DEPARTURE……….+3
TOTAL HEATING UNITS FOR THE MONTH………….513   DEPARTURE……..-141
TOTAL HEATING UNITS FOR THE SEASON………..4196   DEPARTURE…….-1026
TOTAL HEATING UNITS LAST SEASON TO DATE……5429   DIFFERENCE……-1233

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….30 WNW AT  7:28 P.M.
ASOS……………………30 WNW AT  7:29 P.M.
DAVIS…………………..30 WNW AT  7:28 P.M. RMY 32
FASTEST MILE FOR YESTERDAY…………………23 WNW AT  7:33 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………21 WNW AT  7:31 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..20 WNW AT  7:30 P.M.
AVERAGE WIND SPEED AND DIRECTION………….10.8 WNW
ASOS………………….10.1
DAVIS…………………9.2  NW [316 Deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.04  DEPARTURE……-0.16
ASOS…………..0.05
TOTAL PRECIPITATION FOR THE MONTH……….2.71  DEPARTURE……-1.01
ASOS…………..2.74
TOTAL PRECIPITATION FOR THE YEAR……….12.08  DEPARTURE……-0.06
ASOS………….12.70

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.7  DEPARTURE…….+0.4
TOTAL SNOWFALL FOR THE MONTH…………….4.4  DEPARTURE…….-5.3
TOTAL SNOWFALL FOR THE SEASON…………..42.5  DEPARTURE……-14.7

PRELIMINARY CLIMATE SUMMARY FOR MARCH CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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

3/1   45/30/38/+7/0.00/0.0/602/89           54 W   AERO 60 W   RMY 53
3/2   52/21/37/+6/0.41/0.0/204/30           44 WNW AERP 47 NW  RMY 42
3/3   34/16/25/-7/0.00/0.0/641/94           30 WNW AERO 36 WNW RMY N/A
3/4   30/24/27/-5/…./…/000/00           32 N   AERO 38 N   RMY 34
3/5   35/20/28/-4/0.00/0.0/536/78           31 N   AERO 36 N   RMY N/A
3/6   40/25/33/+1/0.00/0.0/593/86           21 SSE AERO 21 SSE RMY N/A
3/7   49/29/39/+6/0.00/0.0/173/25           43 SSW AERO 48 SSW RMY 45
3/8   55/35/45/+12/0.00/0.0/647/93          23 S   AERO 24 S   RMY N/A
3/9   75/38/57/+24/0.00/0.0/594/85          32 S   AERO 36 S   RMY 33
3/10  64/50/57/+24/…./0.0/000/00          31 NNW AERO 38 NNW RMY 32
3/11  56/38/47/+13/T/0.0/331/47             28 NNW AERO 36 NNW RMY 29
3/12  58/31/45/+11/0.00/0.0/650/92          30 SW  AERO 33 SW  RMY 30
3/13  63/46/55/+21/0.00/0.0/…/..          32 NW  AERO 35 NW  RMY 30
3/14  46/36/41/+6/…./T/000/00             32 E   AERO 33 E   RMY N/A
3/15  45/39/42/+7/…./0.0/000/00           36 ENE AERO 38 ENE RMY 34
3/16  48/39/44/+9/…./0.0/…/..           25 E   AERO 28 E   RMY N/A
3/17  63/40/52/+16/…./0.0/…/..          44 NW  AERO 48 NW  RMY 45
3/18  51/33/42/+6/0.01/0.0/…/..           43 WNW AERO 45 WNW RMY 43
3/19  44/25/35/-1/0.00/0.0/…/..           25 NNW AERO 28 NNW RMY 26
3/20  35/23/29/-8/…./…/…/..           25 NE  AERO 28 NE  RMY 25
3/21  41/26/34/-3/…./…/…/..           30 WNW AERO 33 WNW RMY 32

3/22  low temp since midnight is 28F; normal now 28F

DAILY RECORDS FOR MARCH 2016

***3/9/16: NEW DAILY RECORD MAXIMUM TEMPERATURE OF 75F,
BREAKS PREVIOUS RECORD OF 71F SET BACK IN 2000.***

***3/10/16: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 50F,
BREAKS PREVIOUS RECORD OF 42F SET AND TIED IN 1977, 2006***

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

RECORDS FOR MARCH 22
HIGH 81 IN 2012
LOW 3 IN 1885
PRE 3.48 INS. IN 2001
SNOW 8.7 INS. 1967
WIND 84e MPH E IN 1977

RECORDS FOR MARCH 23
HIGH 78 IN 1938
LOW 3 IN 1934
PRE 2.52 INS. IN 2010
SNOW 3.0 INS. IN 1977
WIND 78e MPH W IN 1940

TODAY’S REPORT PREPARED BY: Brian Fitzgerald