Tuesday, March 10, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, MARCH 10, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

TEMPS HIT 52F, FIRST TIME TO THE
50F MARK SINCE JANUARY 18TH

Gusty westerly winds yesterday were not enough
to keep the mercury from climbing to a maximum
reading of 44F after the 1:00 PM EST observation.
Overnight, temperatures were not able to fall
below freezing, with a minimum of 32.2 F.

Clear skies this morning quickly gave way to a
translucent overcast of cirrostratus, with rain
expected later today.

By the 1:00 PM EST observation a halo was visible
around the sun with winds shifting to the south, with
a maximum temperature reading of 52F. Visibility had
fallen to 40 miles in all directions with distant
haze in all directions.

Seasonal snowfall has now reached 143.4 inches, just
1.0 inch below the snowiest season on record set
in 1995-1996. For more information about this historic
winter, visit our web site at bluehill.org.

The average snow depth has fallen to 31 inches as of this
morning. This is the 36th consecutive day with 20 inches
or more of snow on the ground which is firmly in second
place all time.  The record is 53 days set back in 1948.

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

1) 144.4 in 1995-1996
2) 143.4 in 2014-2015 (through 1 PM March 10th)
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

BHO Longest Duration of 20″+ Snow Depth, (1885-2015):

1) 53 days, 27 Dec, 1947 – 17 Feb, 1948
2) 36 days, 3 Feb – 10 Mar, 2015 (through 1 PM March 10th)
3) 34 days, 5 Feb – 9 Mar, 1920
34 days, 7 Feb – 12 Mar, 1978
5) 23 days, 25 Feb – 19 Mar, 1969
6) 21 days, 27 Jan – 16 Feb, 2011
7) 11 days, 15-25 Mar, 1916
11 days, 5-15 Jan, 1961
Today’s Observations:

7 A.M.
Weather: Broken cirrostratus invading, few altocumulus
lenticularis distant NW-N
Temperature: 35F; Dew Point: 16F; Wind: W at 9 kts
Sea-level pressure: 30.33 ins. Hg, rising steadily
Visibility: 70 miles
6-hr Max temp: 35F
6-hr Min temp: 32F
24-hr snowfall: None
24-hr precip: None
Snow depth: 31 inches
BHO SA 1155 E250 BKN 70 271/35/16/2709/033/
FEW ACSL DSNT NW-N/ 8/046 4/031 51015 10035 20032

10 A.M.
Weather: Thin overcast of cirrostratus, partial
halo around the sun, dark smoke layer along the
horizon NNW-NE
Temperature: 46F; Dew Point: 16F; Wind: estimated SSW at 5 kts
Sea-level pressure: 30.35 ins. Hg, rising, then falling
Visibility: 60 miles, except 40 miles NNW-NE, obscured by dark
smoke layer and light distant haze
BHO SA 1455 E240 -OVC 60 277/46/16/E2005/035/
VSBY NNW-NE 40 MI DRK K LYR ALNG HRZN NNW-NE
LGT DSNT HZ ALQDS PARTIAL HALO ARND SUN WND LGT/ 8/007 50006

1 P.M.
Weather: Thin overcast of cirrostratus, halo around the sun
Temperature: 51F; Dew Point: 23F; W at 10G19 kts
Sea-Level Pressure: 30.27 ins. Hg, falling, then more quickly
Visibility: 40 miles, light distant haze
6-hr Max temp: 52F
6-hr Min temp: 35F
BHO SA 1755 E280 -OVC 40 252/51/23/1910G19/027/
HALO ARND SUN LGT DSNT HZ ALQDS/ 8/007 58025 10052 20035
SUMMARY FOR MONDAY, MARCH 9, 2015

TEMPERATURE (DEGREES F)
MAX…..45   NORMAL…..42
MIN…..28   NORMAL…..24
MEAN….37   NORMAL…..33

DEPARTURE FROM 30-YEAR NORMAL……………………….+4
TOTAL DEPARTURE FOR THE MONTH………………………-40 [-4.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..28  DEPARTURE………..-4
TOTAL HEATING UNITS FOR THE MONTH………….336  DEPARTURE……….+40
TOTAL HEATING UNITS FOR THE SEASON………..5044  DEPARTURE………+180
TOTAL HEATING UNITS LAST SEASON TO DATE……4944  DIFFERENCE……..+100

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………40 W   AT 11:30 A.M.
ASOS…………………..43 W   AT 11:31 A.M.
DAVIS………………….39 W   AT 12:18 P.M. RMY 39
FASTEST MILE FOR YESTERDAY………………..34 W   AT 11:37 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..32 W   AT 11:36 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….28 W   AT 11:36 A.M.
AVERAGE WIND SPEED AND DIRECTION…………15.6 W
ASOS…………………15.6
DAVIS………………..13.7 WSW [252 degrees] * last of several occurrences..

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE…..-0.18
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.64  DEPARTURE…..-0.93
ASOS…………..0.66
TOTAL PRECIPITATION FOR THE YEAR……….11.98  DEPARTURE…..+2.12
ASOS……………N/A ***
*** ASOS 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……-0.5
TOTAL SNOWFALL FOR THE MONTH…………….5.9  DEPARTURE……+1.3
TOTAL SNOWFALL FOR THE SEASON………….143.4  DEPARTURE…..+91.8

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

2/1  28/8/18/-8/0.00/0.0/582/97               29 WNW RMY N/A
2/2  29/8/19/-7/1.53/16.5/000/00              44 NE  RMY 46
2/3  21/0/11/-15/0.00/0.0/593/98              31 NW  RMY N/A
2/4  36/14/25/-1/0.00/0.0/164/27              31 S   RMY 33
2/5  34/4/19/-7/0.15/3.5/000/00               38 NW  RMY 39
2/6  19/-2/9/-17/0.00/0.0/392/64              28 NW  RMY 27
2/7  25/14/20/-7/0.08/1.1/000/00              25 WSW RMY N/A
2/8  29/11/20/-7/0.78/12.2/000/00             30 NNE RMY 29
2/9  19/12/16/-11/1.59/13.6/000/00            29 N   RMY 28
2/10 28/12/20/-7/0.10/0.8/081/13              29 N   RMY 29
2/11 24/15/20/-7/0.03/1.4/000/00              30 N   RMY 29
2/12 28/14/21/-6/0.02/0.6/000/00              31 NW  RMY N/A
2/13 20/2/11/-17/0.00/0.0/630/100             35 NW  RMY 35
2/14 26/1/14/-14/…./…/241/38              24 NW  RMY N/A
2/15 18/-6/6/-22/…./…/000/00              53 NW  RMY 59
2/16 17/-8/5/-23/0.00/0.0/606/95              43 NW  RMY N/A
2/17 21/5/13/-15/0.12/2.0/064/10              18 NW  RMY 16
2/18 28/15/22/-7/…./…/039/06              17 W   RMY N/A
2/19 26/6/16/-13/0.02/0.3/116/18              40 W   RMY 43
2/20 15/0/8/-21/0.00/0.0/630/97               38 W   RMY 40
2/21 32/3/18/-11/…./…/462/71              39 SSW RMY 42
2/22 39/27/33/+4/…./…/327/50              25 WSW RMY N/A
2/23 28/1/15/-15/0.00/0.0/204/31              38 WNW RMY 44
2/24 18/-6/6/-24/…./…/574/87              26 S   RMY 27
2/25 32/11/22/-8/…./…/650/98              35 W   RMY 36
2/26 21/15/18/-12/0.04/0.6/000/00             25 NE  RMY 24
2/27 25/9/17/-14/0.00/0.0/669/100             20 NW  RMY N/A
2/28 30/5/18/-13/0.00/0.0/671/100             22 NW  RMY N/A

3/1  29/14/22/-9/…./…/…/..              25 SSW RMY 25
3/2  35/22/29/-2/…./…/…/..              44 WNW RMY 48
3/3  32/13/23/-9/…./2.8/…/..              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/…/..              28 NW  RMY 25
3/7  38/13/26/-7/0.00/0.0/…/..              30 WSW RMY 30
3/8  41/25/33/0/T/T/…/..                    38 WNW RMY 41
3/9  45/28/37/+4/0.00/0.0/…/..              40 W   RMY 39

3/10 morning low temp: 32F since midnight, normal low is now 25F

DAILY RECORDS FOR FEBRUARY 2015

– NEW DAILY RECORD SNOWFALL FOR 2 FEBRUARY 2015
SNOWFALL 16.5 INS. surpasses previous record:
5.5 ins. in 1916, 1934

-NEW DAILY RECORD SNOWFALL FOR 9 FEBRUARY 2015
SNOWFALL 13.6 INS. surpasses previous record:
13.0 ins. in 1969

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 10
HIGH 69 IN 1977
LOW 2 IN 1984
PRECIP 2.00 INS. IN 1994
SNOWFALL 4.0 INS. IN 1997
PEAK GUST 80 MPH NW IN 1974

RECORDS FOR MARCH 11
HIGH 65 IN 1967
LOW 4 IN 1939, 1960
PRECIP 2.11 INS. IN 1901
SNOWFALL 6.3 INS. IN 1934
PEAK GUST 66e MPH W IN 1980

TODAY’S REPORT PREPARED BY: Brian Fitzgerald