Friday, November 7, 2014

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

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

0.58 INCHES OF STEADY RAIN FALL THURSDAY ON BLUE HILL,
GRADUAL CLEARING AS WINDS SHIFT NW

Rain that fell steadily between 10 AM through 9 PM on Thursday
totaled 0.57 inches, adding to our monthly total of now 1.66
inches for the month of November.

Fog that had lingered overnight dissipated by the 7:00 AM EST
observation, though areas of stratus and cumulus fractus remained.
Areas of clearing were observed after the 10:00 AM EST
observation with visibility improving in excess of 70 miles
in all directions.

Today’s Observations:

7 A.M.
Weather: Scattered cumulus fractus, broken stratus fractus,
overcast stratus, patches of fog drifting below summit in
all directions
Temperature: 43F; Dew Point: 42F; Wind: NW at 7 kts
Sea-level pressure: 29.49 ins. Hg, decreasing, then increasing
Visibility: 25 miles, except 10 miles SW, obscured by light fog
in all directions
6-hr max temp: 47F
6-hr min temp: 42F
24-hr precip: 0.58 inches
BHO SA 1155 4 SCT E12 BKN 22 OVC 25 986/43/42/3107/949/
VSBY SW 10 MI PTCHS FG DRFTNG BLO SMT ALQDS LGT FG ALQDS/
8/6// 53002 ASOS 70057 MANUAL 70058 10047 20042

10 A.M.
Weather: Overcast stratocumulus
Temperature: 43F; Dew Point: 38F; Wind: WNW at 12G18 kts
Sea-level pressure: 29.49 ins. Hg, rising, then more quickly
Visibility: 70 miles, except 40 miles NE-SE, light fog distant NE-SE
3-hr precip: 0.00
BHO SA 1455 E29 OVC 70 987/43/38/3012G18/949/
VSBY NE-SE 40 MI LGT DSNT FG NE-SE/ 8/5// 53001

1 P.M.
Weather: Broken stratocumulus
Temperature: 46F; Dew Point: 36F; Wind: at NW @ 20G28 kts,
Peak Gust: 28 kts NW @ 12:50 P.M.
Sea-level pressure: 29.46 ins. Hg, falling then more quickly
Visibility: 70 miles in all directions
6-hr max temp: 46F
6-hr min temp: 41F
6-hr precip: 0.00
BHO SA 1755 E26 BKN 70 977/46/36/3120G28/946/
PK WND 3128/49/ 8/500 58010 10046 20041

WEATHER SUMMARY FOR THURSDAY, NOVEMBER 6, 2014

TEMPERATURE (DEGREES F)
MAX…..52   NORMAL…..53
MIN…..45   NORMAL…..36
MEAN….49   NORMAL…..45

DEPARTURE FROM 30-YEAR NORMAL…………………….+4
TOTAL DEPARTURE FOR THE MONTH…………………….+3 [+0.3 DEGREE/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..16  DEPARTURE………..-4
TOTAL HEATING UNITS FOR THE MONTH………….114  DEPARTURE………..-2
TOTAL HEATING UNITS FOR THE SEASON…………536  DEPARTURE………-144
TOTAL HEATING UNITS LAST SEASON TO DATE…….583  DIFFERENCE………-47

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………23 NE  AT  7:34 P.M.*
ASOS…………………..24 ENE AT  6:34 P.M.
DAVIS………………….23 ENE AT  6:36 P.M. RMY 24
FASTEST MILE FOR YESTERDAY………………..16 NE  AT  7:33 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..17 NE  AT  8:27 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….16 ENE AT  6:36 P.M.
AVERAGE WIND SPEED AND DIRECTION…………8.4 SE
ASOS…………………8.4
DAVIS………………..7.6 ESE (122 degrees)
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.58  DEPARTURE……..+0.43
ASOS…………..0.57
TOTAL PRECIPITATION FOR THE MONTH……….1.66  DEPARTURE……..+0.73
ASOS…………..1.69
TOTAL PRECIPITATION FOR THE YEAR……….43.21  DEPARTURE……..-1.49
ASOS………….43.56

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

11/1 45/36/41/-5/…./0.0/000/00              35 NNE RMY N/A
11/2 37/32/35/-11/…./1.8/000/00             46 NW  RMY 49
11/3 50/30/45/-6/0.00/0.0/…/..              39 WNW RMY 43
11/4 61/44/53/+8/0.00/0.0/…/..              28 SSW RMY 32
11/5 66/50/58/+13/0.00/0.0/…/..             29 SSW RMY N/A
11/6 52/45/49/+4/0.58/0.0/000/00              23 NE  RMY 24

11/7 morning low temp: 42F since midnight; normal low now 36F

DAILY RECORDS FOR NOVEMBER 2014:
11/2 – A NEW RECORD DAILY SNOWFALL 1.8 INCHES;
surpasses the previous record of 0.2 ins. in 1906, 1951

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

RECORDS FOR NOVEMBER 7
HIGH 75 IN 1938
LOW 21 IN 1930
PRECIP 2.02 INCHES IN 1953
SNOWFALL 3.5 IN 2012
PEAK GUST 69e ENE IN 1953

RECORDS FOR NOVEMBER 8
HIGH 72 IN 1938
LOW 20 IN 1921
PRECIP 2.24 INCHES IN 1972
SNOWFALL 4.0 IN 1894
PEAK GUST 72e SE IN 1947

TODAY’S REPORT PREPARED BY: Brian Fitzgerald