Wednesday, January 29, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JANUARY 29, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

A SNOWY START TO THE DAY GIVES WAY TO NEAR CLOUDLESS AND CALM
CONDITIONS THIS AFTERNOON…
JANUARY 2014 NOW THE 10TH SNOWIEST ON RECORD…

By 7:00 AM this morning light snow was falling, providing a very
light coating to most surfaces, totaling 0.2 inches with steadier
snow falling to our south and east. Our morning low of 11 degrees
has climbed steadily with abundant sunshine overhead to the mid 20s
with more warming expected through the week.

Snow for the month of January now totals 33.1 inches so far, nearly
double our historic average. The month now ranks as the 10th snowiest
on record. At 7:00 AM this morning, 1 inch of snow was on the ground.

BHO Snowiest January, inches (1886-2014)

1) 56.3 in 1948
2) 48.2 in 2011
3) 48.0 in 1904
4) 47.6 in 1996
5) 46.0 in 1966
6) 44.8 in 2005
7) 44.5 in 1923
8) 38.3 in 1987
9) 35.6 in 1978
10) 33.1 in 2014

Today’s Observations:

7 A.M.
Weather: Light snow, overcast nimbostratus
Temperature: 12F; Dew Point: 7F; Wind: WNW at 3 kts,
Wind: Direction variability W-WNW
Sea-level pressure: 30.11 ins. Hg, decreasing, then steady
Visibility: 1 mile, reduced by light snow
6-hr. min temp: 11F
24-hr. precip: 0.01 in.
24-hr. snowfall: 0.2 in.
Total snow depth on ground: 1 inch
BHO SA 1155 E50 OVC 1S- 198/12/7/2903/011/ NEW SNW PST 24 HRS 0.2 IN/
8/02/ 4/001 56021 ASOS 60002 70002 MANUAL 60001 70001 10014 20011

10 A.M.
Weather: Few nimbostratus NNE-SSE, scattered altostratus, broken
cirrostratus
Temperature: 14F Dew Point: 7F; Wind: W at 3 kts,
Wind: Direction variability W-WNW
Sea-level pressure: 30.11 ins. Hg, steady then decreasing
Visibility: 60 miles, light distant haze
BHO SA 1455 70 SCT E140 BKN 60 197/14/7/2803/011/ VSBY NNE-SSE 30 MI
LGT HZ ALG HRZN SE-N FEW NS DSNT NNE-SSE/ 8/015 58001

1 P.M.
Weather: Clear, few cirrostratus ENE-S
Temperature: 23F; Dew Point: 6F; Wind: WSW at 4 kts,
Wind: Direction variability WSW-W
Sea-level pressure: 30.01 ins. Hg, steady then decreasing
Visibility: 60 miles, light distant haze
6-hr max. temp: 23F
6-hr min. temp: 11F
6-hr precip: Trace
6-hr snowfall: Trace
BHO SA 1755 CLR 60 163/23/6/2504/001/ FEW CS ENE-S LGT DSNT HZ
NEW SNW PST 6 HRS TRACE/ 8/005 58034 MANUAL 60000 10023 20011

WEATHER SUMMARY FOR TUESDAY, JANUARY 28, 2014

TEMPERATURE (DEGREES F)
MAX…..18    NORMAL…..34
MIN……9    NORMAL…..17
MEAN….14    NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL……………………-11
TOTAL DEPARTURE FOR THE MONTH…………………….-3 [-0.3 DEGREE/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..51  DEPARTURE………+11
TOTAL HEATING UNITS FOR THE MONTH…………1112  DEPARTURE……….+4
TOTAL HEATING UNITS FOR THE SEASON………..3389  DEPARTURE………-23
TOTAL HEATING UNITS LAST SEASON TO DATE……3050  DIFFERENCE…….+339

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………33 W   AT  8:48 A.M.
AERO…………………..31 W   AT  8:45 A.M.
ASOS…………………..32 WNW AT  7:26 A.M.
DAVIS………………….30 WNW AT  7:52 A.M. RMY 32
FASTEST MILE FOR YESTERDAY………………..26 W   AT  7:08 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..24 WNW AT  8:35 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….22 W   AT  7:52 A.M.
AVERAGE WIND SPEED AND DIRECTION…………12.3 W
ASOS…………………12.2
DAVIS………………..10.7 W [281 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01  DEPARTURE………….-0.12
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE MONTH……….4.62  DEPARTURE………….+0.68
ASOS…………..4.94
TOTAL PRECIPITATION FOR THE YEAR………..4.62  DEPARTURE………….+0.68
ASOS…………..4.94

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..0.2    DEPARTURE…………..-0.3
TOTAL SNOWFALL FOR THE MONTH………….33.1    DEPARTURE………….+17.6
TOTAL SNOWFALL FOR THE SEASON…………48.8    DEPARTURE………….+17.3

PRELIMINARY CLIMATE SUMMARY FOR JANUARY 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

1/1  26/16/21/-6/0.00/0.0/505/92          25 W   AERO 25 MPH W   RMY 27
1/2  24/00/12/-15/0.97/10.9/000/00        39 NNE AERO 39 MPH NNE RMY 39
1/3  12/-3/05/-21/0.38/4.7/270/49         36 N   AERO 39 MPH N   RMY 34
1/4  25/-4/11/-15/0.00/0.0/545/99         35 SSW AERO 37 MPH SSW RMY 38
1/5  42/23/33/+07/0.08/0.0/259 47         30 SE  AERO 32 MPH SE  RMY 42
1/6  57/25/41/+15/0.29/0.0/006/01         41 S   AERO 46 MPH S   RMY 48
1/7  25/06/16/-10/0.00/0.0/555/100        44 WNW AERO 46 MPH WNW RMY 42
1/8  21/3/12/-14/0.00/0.0/550/99          28 WSW AERO 29 MPH WSW RMY N/A
1/9  28/13/21/-5/0.00/0.0/540/97          23 WNW AERO 24 MPH WNW RMY 27
1/10 37/17/27/+2/0.05/0.3/000/00          17 SSW AERO 18 MPH SW  RMY N/A
1/11 57/37/47/+22/0.67/0.0/000/00         50 S   AERO 59 MPH S   RMY 59
1/12 51/32/42/+17/0.04/0.0/292/52         41 W   AERO 44 MPH W   RMY 42
1/13 50/30/40/+15/0.00/0.0/473/84         33 S   AERO 36 MPH S   RMY 37
1/14 49/41/45/+20/0.83/0.0/000/00         35 S   AERO 37 MPH S   RMY 32
1/15 46/33/40/+15/0.00/0.0/374/66         24 W   AERO 23 MPH W   RMY N/A
1/16 40/34/37/+12/0.00/0.0/000/00         14 ENE AERO 13 MPH ENE RMY 14
1/17 44/33/39/+14/0.00/0.0/541/95         21 SW  AERO 21 MPH SW  RMY 22
1/18 37/30/34/+9/0.82/4.2/000/00          18 E   AERO 17 MPH E   RMY 18
1/19 32/27/30/+5/0.03/0.5/…/..          28 SW  AERO 35 MPH SW  RMY 34
1/20 39/23/31/+6/0.00/0.0/023/04          38 W   AERO 41 MPH W   RMY 42
1/21 23/8/16/-9/0.30/9.0/006/01           29 WNW AERO 30 MPH WNW RMY 32
1/22 15/3/9/-16/0.12/3.1/237/41           36 N   AERO 35 MPH N   RMY 34
1/23 20/-1/10/-15/0.00/0.0/…/..         30 W   AERO 29 MPH W   RMY 30
1/24 16/2/9/-16/0.00/0.0/…/..           28 WNW AERO 25 MPH WNW RMY N/A
1/25 36/12/24/-1/0.01/0.2/…/..          60 SSW AERO 66 MPH SSW RMY 64
1/26 22/12/17/-8/0.00/0.0/…/..          45 W   AERO 43 MPH W   RMY 41
1/27 45/17/31/+6/0.02/0.0/…/..          46 S   AERO 46 MPH S   RMY 49
1/28 18/9/14/-11/0.00/0.0/…/..          33 W   AERO 31 MPH W   RMY 32

1/29 morning low temp: 11F; the normal low is now 17F

DAILY RECORDS FOR JANUARY 2014
1/21 – New record daily snowfall of 9.0 ins.; this surpasses
7.6 ins. in 2011.

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

RECORDS FOR JANUARY 29
HIGH 66F IN 2002
LOW -11F IN 1888
PRECIP 1.48 INS. IN 1973
SNOWFALL 8.0 INS. IN 1943
PEAK GUST 72 MPH NW IN 1973

RECORDS FOR JANUARY 30
HIGH 60F IN 1914
LOW -8F IN 1948
PRECIP 1.12 INS. IN 1925
SNOWFALL 6.5 INS. IN 1986
PEAK GUST 76 MPH WNW IN 1962

TODAY’S REPORT PREPARED BY: Brian Fitzgerald