Thursday, January 16, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JANUARY 16, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

LOW CLOUDS AND FOG PREVAILING WITH NO SUNSHINE TODAY
LONG STRETCH OF DAYS MUCH WARMER THAN NORMAL CONTINUES
SIX CONSECUTIVE DAYS THIS MONTH WITH DOUBLE DIGIT POSITIVE TEMPERATURE
DEPARTURES AND A TOTAL OF 7 DAYS INCLUDING JANUARY 6TH

Just a very brief glimpse of the sun was observed between
8 and 9 A.M. this morning but low clouds and fog continued
to prevail throughout the day.

Our long period of much above normal temperatures may
continue for a 6th consecutive day today with daily
temperature departures in the positive double digits!

Today’s Observations:

7 A.M.
Weather: Scattered stratocumulus (layer NE-SE-SSW), overcast altostratus,
few altocumulus, thin fog, partial undercast condition, stratus layer below
summit with estimated top of 3 hundred feet, heavy dew all surfaces
Temperature: 35F; Dew Point: 35F; Wind: N at 7 kts
Sea-level pressure: 29.88 ins. Hg, steady
Visibility: 2 miles, fog except 7/8 mile E-S
6-hr. min temp: 34F
BHO SA 1155 60 SCT E140 OVC 2F 120/35/35/3607/988/ SC LYR XTDNG
NE-SE-SSW MOON DMLY VSB PST HR PARTIAL UNDERCAST/STRA LYR BLO SMT
ESTMTD TOP 3 HND VSBY E-S 7/8 HVY DEW ALL SFCS/ 8/52/ 53000 10039 20034

10 A.M.
Weather: Obscured with heavy fog
Temperature: 35F; Dew Point: 35F; Wind: NW at 8 kts,
Sea-level pressure: 29.90 ins. Hg, rising slightly
Visibility: 1/16 mile in heavy fog
BHO SA 1455 W3 X 1/16F 126/35/35/3208/990/ 8//// 53006

1 P.M.
Weather: Partially obscured sky with fog obscuring 5/10,
stratus drifting over summit with fog
Temperature: 37F; Dew Point: 37F; Wind: NE at 3 kts,
Wind: Light
Sea-level pressure: 29.88 ins. Hg, falling then more rapidly
Visibility: 1/2 mile fog, variable 1/4 to 3/4, NW-E 1/8 mile
6-hr max. temp: 38F
6-hr min. temp: 34F
BHO SA 1755 -X E3 OVC 1/2VF 117/37/37/0403/988/ F5 STRA DRFTG OVR SMT
VSBY 1/4V3/4 NW-E 1/8 WND LGT/ 8/6// 58009 10038 20034

WEATHER SUMMARY FOR WEDNESDAY, JANUARY 15, 2014

TEMPERATURE (DEGREES F)
MAX…..46    NORMAL…..33
MIN…..33    NORMAL…..17
MEAN….40    NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL…………………..+15
TOTAL DEPARTURE FOR THE MONTH…………………..+21 [+1.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..25  DEPARTURE………-15
TOTAL HEATING UNITS FOR THE MONTH………….568  DEPARTURE………-19
TOTAL HEATING UNITS FOR THE SEASON………..2845  DEPARTURE………-47
TOTAL HEATING UNITS LAST SEASON TO DATE……2494* DIFFERENCE…….+351

* a correction has been made to total reported through yesterday

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………24 W    AT   12:50 A.M.
AERO…………………..23 W    AT   12:49 A.M.
ASOS…………………..25 W    AT   12:50 A.M.
DAVIS………………….21 W    AT   12:11 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..16 W    AT    3:00 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..17 W    AT    3:00 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….16 SSW  AT   12:08 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.4 S
ASOS………………….10.1
DAVIS………………….8.9 SW [220 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE………….-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.28  DEPARTURE………….+1.14
ASOS…………..3.71
TOTAL PRECIPITATION FOR THE YEAR………..3.28  DEPARTURE………….+1.14
ASOS…………..3.71

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..0.0    DEPARTURE…………..-0.6
TOTAL SNOWFALL FOR THE MONTH………….15.9    DEPARTURE…………..+7.4
TOTAL SNOWFALL FOR THE SEASON…………31.6    DEPARTURE…………..+7.1

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/+22/0.64/0.0/000/00         50 S   AERO 59 MPH S   RMY 59
1/12 51/32/42/+17/0.04/0.0/286/51         41 W   AERO 44 MPH W   RMY 42
1/13 50/30/40/+15/0.00/0.0/…/..         33 S   AERO 36 MPH S   RMY 37
1/14 49/41/45/+20/0.83/0.0/…/..         35 S   AERO 37 MPH S   RMY 32
1/15 46/33/40/+15/0.00/0.0/…/..         24 W   AERO 23 MPH W   RMY N/A

1/16 morning low temp: 34F; the normal low is now 17F

DAILY RECORDS FOR JANUARY 2014
None so far.

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

RECORDS FOR JANUARY 16
HIGH 63F IN 1995
LOW -12F IN 2004
PRECIP 1.32 INS. IN 1936
SNOWFALL 14.0 INS. IN 1965
PEAK GUST 79 MPH WNW IN 1960

RECORDS FOR JANUARY 17
HIGH 55F IN 1973,1995
LOW -8F IN 1907,1982
PRECIP 1.43 INS. IN 1956
SNOWFALL 13.4 INS. IN 1956
PEAK GUST 62 MPH S IN 1994

TODAY’S REPORT PREPARED BY: Robert Skilling