Thursday, February 6, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, FEBRUARY 6, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

SNOW, SNOW GRAINS AND SLEET ADD ANOTHER 11.1 INCHES
KEEPING SEASONAL TOTALS ON TRACK TO STAY ABOVE AVERAGE

Snow that began yesterday after 5:00 AM continued throughout
most of Wednesday, with several periods of heavy snow, poor
visibility and transitions and mixing between snow, snow grains
and ice pellets.

By 1:00 PM this afternoon, clouds were largely dissipating
with a temperature of 25 F and a visibility of approximately
50 miles.

Storm Totals for Jan. 5-6 at Great Blue Hill:
-11.1 inches of snow
-1.34 inches, liquid equivalent
-snowfall rates of > 1 inch per hour

Snow now totals 62.7 inches for the season, which surpasses
as seasonal average of 61 inches.

For a discussion and summary for the month of January 2014,
visit bluehillobservatory.org.

Today’s Observations:

7 A.M.
Weather: Scattered cirrus fibratus, few cumulus fractus in
all directions, few altostratus NNE-SSE,
few altostratus lenticularis
Temperature: 16F; Dew Point: 12F; Wind: NW at 9 kts
Sea-level pressure: 30.19 ins. Hg, increasing, then more quickly
Visibility: 35 miles, distant haze
6-hr. min temp: 16F
Total precip. past 24 hours: 1.08 inches
Total snowfall past 24 hours: 8.3 inches
Total snow on the ground: 11 inches
BHO SA 1155 250 SCT 35 222/16/12/3109/019/ FEW CUFRA AQLDS
FEW AS NNE-SSE FEW ACSL NE DSNT HZ ALQDS NEW SNW PST 18 HRS
2.4 INS NEW SNW PST 24 HRS 8.3 INS STORM TOTAL 11.1 INS/
8/121 4/011 53038 ASOS 60001 70113 MANUAL 70108 10021 20016

10 A.M.
Weather: Broken dense cirrus, thin overcast cirrus fibratus,
few cumulus fractus SSW, few altostratus NW-SE
Temperature: 18F Dew Point: 12F; Wind: WNW at 6 kts,
Sea-level pressure: 30.25 ins. Hg, rising, then more slowly
Visibility: 45 miles, light distant haze
BHO SA 1455 E200 BKN 250 -OVC 45 244/18/12/2906/025/ FEW
CUFRA SSW FEW AS NW-SE DSNT LGT HZ WND LGT/ 8/124 51022

1 P.M.
Weather: Scattered cirrus fibratus, few altostratus NNE-SE
Temperature: 25F; Dew Point: 15F; Wind: NW at 5 kts,
Sea-level pressure: 30.22 ins. Hg, steady, then falling
Visibility: 50 miles, light distant haze
6-hr max. temp: 25F
6-hr min. temp: 15F
BHO SA 1755 250 SCT 50 235/25/15/3105/022/ FEW AS NNE-SE
DSNT LGT HZ WND LGT/ 8/021 58009 10025 20015

WEATHER SUMMARY FOR WEDNESDAY, FEBRUARY 5, 2014

TEMPERATURE (DEGREES F)
MAX…..31    NORMAL…..35
MIN…..21    NORMAL…..17
MEAN….26    NORMAL…..26

DEPARTURE FROM 30-YEAR NORMAL……………………+/-0
TOTAL DEPARTURE FOR THE MONTH……………………+32 [+6.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..39  DEPARTURE………..0
TOTAL HEATING UNITS FOR THE MONTH………….163  DEPARTURE………-32
TOTAL HEATING UNITS FOR THE SEASON………..3680  DEPARTURE………-46
TOTAL HEATING UNITS LAST SEASON TO DATE……3334  DIFFERENCE…….+346

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………32 ENE AT  12:48 P.M.*
AERO…………………..30 ENE AT  12:49 P.M.
ASOS…………………..28 E   AT  12:50 P.M.
DAVIS………………….28 E   AT  12:49 P.M. RMY 30
FASTEST MILE FOR YESTERDAY………………..23 ENE AT  12:50 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..24 E   AT  12:51 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….22 E   AT  12:51 P.M.
AVERAGE WIND SPEED AND DIRECTION…………  11.1 ENE
ASOS…………………..11.4
DAVIS………………….9.5 NE [051 deg.] * INDICATES LAST IN A SERIES

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M… 1.08  DEPARTURE………….+0.94
ASOS…………..1.13
TOTAL PRECIPITATION FOR THE MONTH……… 1.66  DEPARTURE………….+0.98
ASOS…………..1.71
TOTAL PRECIPITATION FOR THE YEAR………..6.28  DEPARTURE………….+1.25
ASOS…………..6.64

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….8.3  DEPARTURE…………..+7.8
TOTAL SNOWFALL FOR THE MONTH……………13.9  DEPARTURE………….+11.4
TOTAL SNOWFALL FOR THE SEASON…………..62.7  DEPARTURE………….+27.1

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

2/1  45/30/38/+12/0.00/0.0/…/..         24 S   AERO 23 MPH S   RMY 25
2/2  53/33/43/+17/0.00/0.0/…/..         22 S   AERO 21 MPH WNW RMY 21
2/3  36/22/29/+3/0.32/2.8/000/00          22 NNE AERO 18 MPH NNE RMY 21
2/4  33/18/26/0/0.00/0.0/…/..           20 NW  AERO 16 MPH NW  RMY 17
2/5  31/21/26/0/…./…/000/00           32 ENE AERO 30 MPH ENE RMY 30

2/6  morning low temp: 16F; the normal low is now 17F

DAILY RECORDS FOR FEBRUARY 2014
None so far.

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

RECORDS FOR FEBRUARY 6
HIGH 54F IN 1909
LOW -10F IN 1895
PRECIP 1.88 INS. IN 1896
SNOWFALL 13.0 INS. IN 1978 [BLIZZARD OF 1978] PEAK GUST 84e MPH NE IN 1978

RECORDS FOR FEBRUARY 7
HIGH 51F IN 1951,1953
LOW -8F IN 1910
PRECIP 2.12 INS. IN 1983
SNOWFALL 17.1 INS. IN 1978 [BLIZZARD OF 1978] PEAK GUST 87e MPH SSE IN 1951

TODAY’S REPORT PREPARED BY: Brian Fitzgerald