Friday, February 7, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, FEBRUARY 7, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

CLEAR, NEARLY CLOUDLESS SKIES AND COOL TEMPERATURES
DOMINATE MOST OF FRIDAY.

High pressure has built in today to provide very clear
skies with visibilities varying between 45 and 60 miles.

By 1:00 PM this afternoon, pressure had steadied, then
began falling, with some cirrostratus lenticularis
visible and distant to the SE-SSW. By 1:00 PM a maximum
6-hr temperature of 27.7 degrees had been reached,
approximately 7 degrees below our daily average high
of 35F.

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

Today’s Observations:

7 A.M.
Weather: Clear, few altostratus distant SSW, few cirrus
distant ESE-SSE
Temperature: 16F; Dew Point: 7F; Wind: W at 13 kts
Sea-level pressure: 30.22 ins. Hg, increasing, then more slowly
Visibility: 60 miles
6-hr min temp: 13F
Total snow on the ground: 11 inches
BHO SA 1155 CLR 60 235/16/7/2713/022/ FEW AS DSNT SSW FEW CI
DSNT ESE-SSE/ 8/021 4/011 51007 10016 20013

10 A.M.
Weather: Clear, few cirrus distant SSE
Temperature: 22F Dew Point: 12F; Wind: W at 10 kts
Sea-level pressure: 30.27 ins. Hg, rising, then more slowly
Visibility: 60 miles, 45 miles W-NW, haze distant W-NW
BHO SA 1455 CLR 60 250/22/12/2710/027/ FEW CI DSNT SSE VSBY
W-NW 45 HZ DSNT W-NW/ 8/001 51015

1 P.M.
Weather: Clear, few cumulus NW-N, few cirrocumulus
lenticularis distant SE-SSW
Temperature: 26F; Dew Point: 11F; Wind: W at 15G22 kts,
Sea-level pressure: 30.19 ins. Hg, steady, then falling
Visibility: 60 miles
6-hr max. temp: 28F
6-hr min. temp: 15F
BHO SA 1755 CLR 60 223/26/11/2715G22/019/ FEW CU NW-N FEW CCSL
DSNT SE-SSW/ 8/105 58027 10028 20015

WEATHER SUMMARY FOR THURSDAY, FEBRUARY 6, 2014

TEMPERATURE (DEGREES F)
MAX…..26    NORMAL…..35
MIN…..15    NORMAL…..17
MEAN….21    NORMAL…..26

DEPARTURE FROM 30-YEAR NORMAL…………………….-5
TOTAL DEPARTURE FOR THE MONTH……………………+27 [+4.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..44  DEPARTURE……….+5
TOTAL HEATING UNITS FOR THE MONTH………….207  DEPARTURE………-27
TOTAL HEATING UNITS FOR THE SEASON………..3724  DEPARTURE………-41
TOTAL HEATING UNITS LAST SEASON TO DATE……3369  DIFFERENCE…….+355

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………22 WNW AT   9:07 A.M.
AERO…………………..21 WNW AT   9:09 A.M.
ASOS…………………..22 NW  AT   9:09 A.M.
DAVIS………………….19 W   AT  11:21 P.M. RMY 22
FASTEST MILE FOR YESTERDAY………………..16 WNW AT   9:10 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..17 NNW AT   9:09 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….15 W   AT  11:31 P.M.
AVERAGE WIND SPEED AND DIRECTION…………  8.1 NW
ASOS…………………..8.7
DAVIS………………….7.0 WNW [297 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M… 0.00  DEPARTURE………….-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……… 1.66  DEPARTURE………….+0.85
ASOS…………..1.73
TOTAL PRECIPITATION FOR THE YEAR………..6.28  DEPARTURE………….+1.12
ASOS…………..6.64

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..0.0    DEPARTURE…………..-0.5
TOTAL SNOWFALL FOR THE MONTH………….13.9    DEPARTURE………….+10.9
TOTAL SNOWFALL FOR THE SEASON…………62.7    DEPARTURE………….+26.6

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  26/15/21/-5/…./…/…/..          22 WNW AERO 21 MPH WNW RMY 22

2/7  morning low temp: 13F; 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 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

RECORDS FOR FEBRUARY 8
HIGH 60F IN 1933
LOW -9F IN 1934
PRECIP 2.50 INS. IN 1945
SNOWFALL 16.1 INS. IN 2013
PEAK GUST 63e MPH NE IN 1945, 2013

TODAY’S REPORT PREPARED BY: Brian Fitzgerald