Monday, March 23, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 23, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

CLEAR, COLD AND WINDY, MERCURY DROPS TO 14F THIS MORNING

Skies were clear once again this morning, with chilly conditions,
especially with ambient air temperatures in the mid teens and wind
chills near zero. Visibility was good this morning as well, with
views into southwest New Hampshire, approximately 70 miles or so.
Winds that gusted to 50 MPH yesterday have eased somewhat,
remaining the 15-20 knot range this morning.

By the 1:00 PM EST observation winds were still steady between
W and WNW. Temperatures had climbed somewhat, but only reached
a maximum of 29F, some 17 degrees below today’s daily normal
maximum. Visibility remained at 70 miles under completely
cloudless conditions.

For more information about this historic winter, visit our
web site at bluehill.org.

BHO Greatest Seasonal Snowfall, inches (1885-2015):

1) 145.8 in 2014-2015 (through 1 PM March 23rd)
2) 144.4 in 1995-1996
3) 136.0 in 1947-1948
4) 119.4 in 2004-2005
5) 113.1 in 2002-2003
6) 111.5 in 1915-1916
7) 109.6 in 1966-1967
8) 106.8 in 1955-1956
9) 103.4 in 1903-1904
10) 102.5 in 1922-1923
Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus W-ESE, few cirrus distant SE-SSW
Temperature: 16F; Dew Point: 3F; Wind: WNW at 12G19 kts
Sea-level pressure: 30.13 ins. Hg, rising then rising more quickly
Visibility: 70 miles
6-hr Max temp: 16F
6-hr Min temp: 14F
24-hr precip: none
24-hr snowfall: none
Snow depth: 15 inches
BHO SA 1155 CLR 70 202/16/3/2912G19/013/ FEW SC W-ESE FEW CI DSNT
SE-SSW/ 8/501 4/015 53007 10016 20014

10 A.M.
Weather: Sky clear
Temperature: 22F; Dew Point: 2F; Wind: WNW at 13G20 kts
Peak Wind: 26 kts WNW @ 9:44 AM EST
Sea-level pressure: 30.12 ins. Hg, falling, then more slowly
Visibility: 70 miles
BHO SA 1455 CLR 70 199/22/2/2913G20/012/ SKC PK WND 2926/44/
8/000 56003

1 P.M.
Weather: Sky clear
Temperature: 29F; Dew Point: 9F; Wind: W at 17G28 kts
Peak Wind: 28 kts W @ 12:50 PM EST
Sea-Level Pressure: 30.10 ins. Hg, decreasing then more quickly
Visibility: 70 miles
6-hr Max temp: 29F
6-hr Min temp: 16F
BHO SA 1755 CLR 70 193/29/9/2817G28/010/ SKC PK WND 2828/50/
8/000 58006 10029 20016
SUMMARY FOR SUNDAY, MARCH 22, 2015

TEMPERATURE (DEGREES F)
MAX…..36   NORMAL…..46
MIN…..17   NORMAL…..28
MEAN….27   NORMAL…..37

DEPARTURE FROM 30-YEAR NORMAL………………………-10
TOTAL DEPARTURE FOR THE MONTH………………………-77 [-3.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..38  DEPARTURE……….+10
TOTAL HEATING UNITS FOR THE MONTH………….759  DEPARTURE……….+77
TOTAL HEATING UNITS FOR THE SEASON………..5467  DEPARTURE………+217
TOTAL HEATING UNITS LAST SEASON TO DATE……5250  DIFFERENCE……..+123

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………50  W   AT  10:11 A.M.
ASOS…………………..54  NW  AT  10:11 A.M.
DAVIS………………….51  W   AT  10:11 A.M. RMY 55
FASTEST MILE FOR YESTERDAY………………..41  W   AT  10:11 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..37  WNW AT  10:12 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….37  WNW AT  10:12 A.M.
AVERAGE WIND SPEED AND DIRECTION………….21.4 WNW
ASOS………………….20.3
DAVIS…………………18.6 WNW [290 degrees] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00   DEPARTURE…..-0.19
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.96   DEPARTURE…..-1.78
ASOS…………..N/A
TOTAL PRECIPITATION FOR THE YEAR……….13.30   DEPARTURE…..+1.27
ASOS…………..N/A ***
*** ASOS monthly and annual totals not available due to erroneous readings

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……-0.3
TOTAL SNOWFALL FOR THE MONTH…………….8.3  DEPARTURE……-1.7
TOTAL SNOWFALL FOR THE SEASON………….145.8  DEPARTURE…..+88.8

PRELIMINARY CLIMATE SUMMARY FOR MARCH CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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  29/14/22/-9/…./…/000/00              25 SSW RMY 25
3/2  35/22/29/-2/…./…/480/71              44 WNW RMY 48
3/3  32/13/23/-9/…./2.8/340/50              33 S   RMY N/A
3/4  41/32/37/+5/…./…/000/00              33 SW  RMY 36
3/5  36/16/26/-6/0.02/0.2/000/00              28 NW  RMY 29
3/6  26/5/16/-16/0.00/0.0/681/99              28 NW  RMY 25
3/7  38/13/26/-7/0.00/0.0/567/82              30 WSW RMY 30
3/8  41/25/33/0/T/T/208/30                    38 WNW RMY 41
3/9  45/28/37/+4/0.00/0.0/565/81              40 W   RMY 39
3/10 52/32/42/+9/…./0.0/252/36              28 S   RMY 27
3/11 55/38/47/+13/…./0.0/604/86             37 WNW RMY N/A
3/12 38/23/31/-3/0.00/0.0/677/96              44 N   RMY 48
3/13 40/18/29/-5/0.00/0.0/581/82              23 SSW RMY 26
3/14 41/29/35/0/0.84/0.0/000/00               23 SSW RMY 23
3/15 41/24/33/-2/0.03/0.6/021/03              39 NW  RMY 39
3/16 44/23/34/-1/0.00/0.0/516/72              28 NW  RMY N/A
3/17 48/25/37/+1/0.17/T/173/24                53 NW  RMY 63
3/18 30/19/25/-11/0.00/0.0/700/97             51 NW  RMY 56
3/19 31/15/23/-13/0.00/0.0/696/96             37 NW  RMY 39
3/20 32/19/26/-11/…./…/000/00             17 NNW RMY 15
3/21 41/25/33/-4/…./…/…/..              36 WNW RMY N/A
3/22 36/17/27/-10/0.00/0.0/…/..             50 W   RMY 55

3/23 Low since midnight is 14F normal low is 29F

DAILY RECORDS FOR MARCH 2015

-NONE SO FAR.

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

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

RECORDS FOR MARCH 24
HIGH 70 IN 1920
LOW 6 IN 1906
PRECIP 1.51 INS. IN 1956
SNOWFALL 12.3 INS. IN 1956
PEAK GUST 71 MPH W IN 1968

TODAY’S REPORT PREPARED BY: Brian Fitzgerald