Wednesday, January 15, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JANUARY 15, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

ONE MORE DAY OF HIGHER-THAN-AVERAGE TEMPERATURES AND SUN TO
FINISH A STRETCH OF UNSEASONABLE WARMTH.

From 7:00 A.M. yesterday through 7:00 A.M. 0.83 inches of new rain
was recorded, keeping our precipitation totals for this month ahead
of climate normals. With half of the month completed Blue Hill has
recorded 3.28 inches of precipitation already.

This morning’s clear skies have given way to nearly overcast cirrus this
early afternoon ahead of a series of weak disturbances expected for our region
later this week. Today will likely be the sixth consecutive day of above average
temperatures what is now typically the coldest time of the year.

Today’s Observations:

7 A.M.
Weather: Clear, few cirrocumulus
Temperature: 34F; Dew Point: 31F; Wind: SW at 7 kts
Sea-level pressure: 29.97 ins. Hg, increasing, then more slowly
Visibility: 20 miles, patchy valley fog.
6-hr. min temp: 34F
BHO SA 1155 CLR 20 150/34/31/2207/997/ DNS PTCHY VLY FG ALQDS
FEW CC DSNT OFFSHR/ 8/007 51029 ASOS 70085 MANUAL 70083 10039 20034

10 A.M.
Weather: Clear, few cirrostratus
Temperature: 39F; Dew Point: 33F; Wind: SW variable at 2 kts,
Sea-level pressure: 30.02 ins. Hg, increasing, then steady
Visibility: 25 miles, hazy
BHO SA 1455 CLR 25 167/39/33/E2302/002/ FEW CS E-SSW
DRK K LYR ALG HRZN SSW-ENE THN HZ/ 8/008 51017

1 P.M.
Weather: Scattered cumulus fractus, broken cirrus fibratus and
cirrostratus
Temperature: 45F; Dew Point: 33F; Wind: SSW at 8 kts,
Sea-level pressure: 29.98 ins. Hg, steady, then decreasing
Visibility: 25 miles, hazy
6-hr max. temp: 46F
BHO SA 1755 45 SCT E250 BKN 25 152/45/33/2108/998/
DRK K LYR ALG HRZN SSW-ENE LGT HZ/ 8/101 58015 10046 20034

WEATHER SUMMARY FOR TUESDAY, JANUARY 14, 2014

TEMPERATURE (DEGREES F)
MAX…..49    NORMAL…..33
MIN…..41    NORMAL…..17
MEAN….45    NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL…………………..+20
TOTAL DEPARTURE FOR THE MONTH……………………+6 [+0.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..20  DEPARTURE………-20
TOTAL HEATING UNITS FOR THE MONTH………….543  DEPARTURE……….-5
TOTAL HEATING UNITS FOR THE SEASON………..2820  DEPARTURE………-32
TOTAL HEATING UNITS LAST SEASON TO DATE……2812  DIFFERENCE…….+354

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………35 S    AT   12:15 A.M.
AERO…………………..37 S    AT   12:43 A.M.
ASOS…………………..37 SSW  AT   12:17 A.M.
DAVIS………………….36 SW   AT   12:45 A.M. RMY 32
FASTEST MILE FOR YESTERDAY………………..26 S    AT   12:39 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..26 SSW  AT   12:40 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….26 S    AT   12:46 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..14.2 S
ASOS………………….14.3
DAVIS…………………13.1 SW [208 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.83  DEPARTURE………….+0.68
ASOS…………..0.85
TOTAL PRECIPITATION FOR THE MONTH……….3.28  DEPARTURE………….+1.29
ASOS…………..3.71
TOTAL PRECIPITATION FOR THE YEAR………..3.28  DEPARTURE………….+1.29
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…………..+8.0
TOTAL SNOWFALL FOR THE SEASON…………31.6    DEPARTURE…………..+7.7

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/…/..          23 WNW AERO 24 MPH WNW RMY 27
1/10 37/17/27/+2/…./0.3/000/00          17 SSW AERO 18 MPH SW  RMY N/A
1/11 57/37/47/+22/…./0.0/000/00         50 S   AERO 59 MPH S   RMY 59
1/12 51/32/42/+17/0.00/0.0/…/..         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/…./0.0/…/..         35 S   AERO 37 MPH S   RMY 32

1/15 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 15
HIGH 64F IN 1995
LOW -16F IN 1957 [RECORD FOR MONTH] PRECIP 2.63 INS. IN 1958
SNOWFALL 8.8 INS. IN 1983
PEAK GUST 69e MPH SE IN 1940

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

TODAY’S REPORT PREPARED BY: Brian Fitzgerald