Friday, November 13, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, NOVEMBER 13, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

RAINFALL COMES TO AN END OVERNIGHT,
0.80 INCHES MEASURED THIS WEEK

Rain showers only brought 0.01 inches of new precipitation
yesterday through 1:00 PM EST; however, additional rounds
of showers brought 0.08 inches, ending after midnight.
Precipitation through this morning has increased the
deficit once again, with the month of November down
1.08 inches and the year 8.02 inches.

Winds have become gusty this morning, with winds regularly
gusting beyond 30 MPH from the WSW to W. By the 1:00 PM EST
observation a peak gust of 39 MPH had been reached on the
F420C anemometer, just after that observation. Showers were
visible to the W, reducing visibility to 40 miles, with 80
miles of visibility in all other directions. A maximum of
57F had been reached.

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus lenticularis distant SW-E
Temperature: 47F; Dew Point: 43F; Wind: SW at 16G21 kts
Sea-level pressure: 29.49 ins. Hg, rising, then more quickly
Visibility: 70 miles, except 35 miles W-N, thin fog
6-hr Max temp: 53F
6-hr Min temp: 47F
24-hr precip: 0.09 in.
BHO SA 1155 CLR 70 987/47/43/2316G21/949/ VSBY W-N 35 MI
FEW SCSL DSNT SW-E THN FG DSNT W-N/ 8/500 53009 ASOS 70010
MANUAL 70009 10053 20047

10 A.M.
Weather: Clear, few cumulus/stratocumulus in all directions
Temperature: 54F; Dew Point 41F; Wind: WSW at 19G27 kts,
Peak Wind: 27 kts WSW at 9:46 AM EST
Sea-level pressure: 29.52 ins. Hg, rising, then more slowly
Visibility: 70 miles, except 50 miles WSW, 60 miles W-NW
BHO SA 1455 CLR 70 996/54/41/2519G27/952/ VSBY WSW 50 MI
W-NW 60 MI FEW SC/CU ALQDS PK WND 2527/46/ 8/800 51009

1 P.M.
Weather: Scattered cumulus, scattered stratocumulus,
showers distant west
Temperature: 57F; Dew Point 39F; Wind: W at 20G30 kts
Peak Wind: 33 kts W at 12:10 PM EST
Sea-level pressure: 29.50 ins. Hg, rising, then falling and lower
Visibility: 80 miles, except 40 miles W, obscured by showers
6-hr max. temp. 57F
6-hr min. temp. 47F
BHO SA 1755 40 SCT 50 SCT 80 991/57/39/2820G30/950/ VSBY W 40 MI
SHWRS DSNT W PK WND 2733/10/ 8/800 58005 10057 20047
SUMMARY FOR THURSDAY, NOVEMBER 12, 2015

TEMPERATURE (DEGREES F)
MAX…..55   NORMAL…..51
MIN…..42   NORMAL…..35
MEAN….49   NORMAL…..43

DEPARTURE FROM 30-YEAR NORMAL………………….+6
TOTAL DEPARTURE FOR THE MONTH………………..+110  [+9.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..16   DEPARTURE……….-6
TOTAL HEATING UNITS FOR THE MONTH………….135   DEPARTURE……..-109
TOTAL HEATING UNITS FOR THE SEASON…………589   DEPARTURE……..-218
TOTAL HEATING UNITS LAST SEASON TO DATE…….649   DIFFERENCE……..-60

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….28 S   AT   9:09 P.M.
ASOS……………………30 S   AT   9:09 P.M.
DAVIS…………………..29 S   AT   8:36 P.M. RMY 30
FASTEST MILE FOR YESTERDAY…………………23 S   AT   9:09 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………23 S   AT   9:10 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..22 SSW AT   9:10 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.6 S
ASOS…………………..9.0
DAVIS………………….8.8 S [194 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.09  DEPARTURE…..-0.07
ASOS……………0.10
TOTAL PRECIPITATION FOR THE MONTH………..0.80  DEPARTURE…..-1.08
ASOS……………0.80
TOTAL PRECIPITATION FOR THE YEAR………..37.63  DEPARTURE…..-8.02
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 low since midnight is 47F; 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 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 INCHES IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982

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

TODAY’S REPORT PREPARED BY: Brian Fitzgerald