Saturday, November 14, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, NOVEMBER 14, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

SHOWERS LEAVE A TRACE OF RAIN FRIDAY AFTERNOON,
GUSTY WINDS CONTINUE AS COOL TO SEASONABLE TEMPS
VISIT THE REGION

Rain showers passed through the region yesterday afternoon,
leaving just a trace of new precipitation here on top of
Great Blue Hill. Showers stopped and started multiple
times between 2:00 PM and 3:00 PM EST.

Gusty winds yesterday that peaked at 40 MPH just after the
1:00 PM EST observation, have continued this morning as well,
hitting the 40 MPH mark once again on some anemometers. Skies
have been partly to mostly cloudy, with much cooler temperatures.
Today may be the first cooler than normal day for the month of
November, which has been averaging 8.7 degrees F above normal
with nearly half of the month completed.

By the 1:00 PM EST observation, clouds cover nearly all of the
sky and upper level Cirrostratus clouds had begun to move in
from the West.  These clouds were obscured by the Broken cloud
deck of Stratocumulus clouds.  Temperatures had begun to fall
back into the lower 40’s.  Conditions remained very dry with
strong winds gusting around 40 mph.

Today’s Observations:

7 A.M.
Weather: Clear, few cumulus/stratocumulus in all directions,
showers distant WNW-NNW
Temperature: 39F; Dew Point: 29F; Wind: W at 14 kts
Sea-level pressure: 29.77 ins. Hg, rising, then more quickly
Visibility: 80 miles, except 50 miles WNW-NNW, showers
6-hr Max temp: 40F
6-hr Min temp: 37F
24-hr precip: Trace
BHO SA 1155 CLR 80 081/39/29/2614/977/
VSBY WNW-NNW 50 MI SHWRS DSNT WNW-NNW FEW CU/SC ALQDS/
8/800 53021 10040 20037

10 A.M.
Weather: Scattered Stratocumulus, Few Cumulus in all directions
Temperature: 43F; Dew Point 26F; Wind: WSW at 15G27 kts,
Peak Wind: 27 kts WSW @ 9:55 AM EST
Sea-level pressure: 29.85 ins. Hg, rising, then more slowly
Visibility: 75 miles
BHO SA 1455 45 SCT 75 111/43/26/3015G27/985  FEW CU ALQDS
8/800 51030

1 P.M.
Weather: Broken Stratocumulus, Few Cumulus, Few Cirrostratus
obscured by lower clouds
Temperature: 41F; Dew Point 21F; Wind: W at 19G29 kts
Peak Wind: 35 kts W @ 11:20 PM EST
Sea-level pressure: 29.83 ins. Hg, rising, then rising slower
Visibility: 75 miles
6-hr max. temp. 43F
6-hr min. temp. 39F
BHO SA 1755 E55 BKN 75 104/41/21/3019G29/983/ FEW CU ALQDS FEW
CS W 8/806 51023 10043 20039

SUMMARY FOR FRIDAY, NOVEMBER 13, 2015

TEMPERATURE (DEGREES F)
MAX…..57   NORMAL…..51
MIN…..41   NORMAL…..34
MEAN….49   NORMAL…..43

DEPARTURE FROM 30-YEAR NORMAL………………….+6
TOTAL DEPARTURE FOR THE MONTH………………..+116  [+8.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..16   DEPARTURE……….-6
TOTAL HEATING UNITS FOR THE MONTH………….151   DEPARTURE……..-115
TOTAL HEATING UNITS FOR THE SEASON…………605   DEPARTURE……..-224
TOTAL HEATING UNITS LAST SEASON TO DATE…….673   DIFFERENCE……..-68

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….40 WSW AT   9:41 P.M.
ASOS……………………45 WSW AT   9:40 P.M.
DAVIS…………………..43 W   AT   1:06 P.M. RMY 47
FASTEST MILE FOR YESTERDAY…………………33 W   AT   8:17 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………32 W   AT   8:18 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..29 W   AT   8:18 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..19.1 W
ASOS…………………..18.7
DAVIS………………….16.3 W [278 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….TRACE  DEPARTURE…..-0.16
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..0.80  DEPARTURE…..-1.24
ASOS……………0.80
TOTAL PRECIPITATION FOR THE YEAR………..37.63  DEPARTURE…..-8.18
ASOS…………….N/A ***
*** ASOS annual total not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/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  59/45/52/+6/T/…/..                  30 SSW RMY 31
11/2  62/47/55/+9/0.00/…/..               24 W   RMY N/A
11/3  71/44/58/+12/0.00/…/..              25 W   RMY 25
11/4  66/49/58/+13/0.00/…/..              22 SSW RMY N/A
11/5  72/51/62/+17/0.00/…/..              31 SW  RMY 36
11/6  71/60/66/+21/0.00/…/..              35 SSW RMY 38
11/7  64/46/55/+10/0.00/…/..              33 WNW RMY 35
11/8  54/39/47/+3/0.00/…/..               26 NW  RMY 30
11/9  59/38/49/+5/0.00/…/..               20 W   RMY 21
11/10 53/45/49/+5/…./000/00               28 NE  RMY N/A
11/11 48/43/46/+3/…./000/00               41 NE  RMY N/A
11/12 55/42/49/+6/…./000/00               28 S   RMY 30
11/13 57/41/49/+6/…./…/..               40 WSW RMY 47

11/14 low since midnight is 37F; normal low is now 34F

DAILY RECORDS FOR NOVEMBER 2015

**11/6 DAILY RECORD MAXIMUM TEMPERATURE OF 71F
TIES PREVIOUS RECORD OF 71F SET IN 1959

**11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F
BREAKS PREVIOUS RECORD OF 58F SET IN 1938

**11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F
TIES PREVIOUS MONTHLY RECORD OF 60F SET ON
11/8/1996

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

RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 2.08 INCHES IN 2009
SNOWFALL 3.5 IN 1997, 2014
PEAK GUST 63 W IN 2003

RECORDS FOR NOVEMBER 15
HIGH 74 IN 1993
LOW 15 IN 1933
PRECIP 1.66 INCHES IN 1981
SNOWFALL 4.0 IN 1967
PEAK GUST 65 SSE IN 2008

TODAY’S REPORT PREPARED BY: Brian Fitzgerald/Robert Millette