Friday, November 27, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, NOVEMBER 27, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

WARM WEATHER CONTINUES FOR 2ND DAY OF HOLIDAY WEEKEND
DEW POINTS IN UPPER 40’S RESULT IN HEAVY OVERNIGHT CONDENSATION
LOW TEMPERATURE OF 48F THIS MORNING ONE DEGREE SHORT OF HIGH MINIMUM
GUSTY SW WINDS REACH SPEEDS OVER 35 MPH

The mild Thanksgiving Day yesterday brought a mean temperature
ten degrees warmer than normal at 48 degrees. Increasing moisture
over night resulted in a near record high minimum temperature of
48 degrees (record is 49F in 1976). Today’s high reading has
reached the lower 60’s, well above the normal of 46F. Southwest
winds have gusted to near 38 MPH by early afternoon.

Today’s Observations:

7 A.M.
Weather: Overcast stratus, overcast partly thin, higher clouds
visible W, thin fog drifting over summit, sun and moon occasionally
dimly visible
Temperature: 49F; Dew Point: 49F; Wind: SSW at 15 kts
Sea-level pressure: 30.55 ins. Hg, falling then more slowly
Visibility: 2 miles, except briefly SW 8 briefly NE 1/4, fog in
all quadrants
6hr Max temp: 50F
6-hr Min temp:48F
24-hr precip: 0.00 ins.
BHO SA 1155 E3 OVC 2F 344/49/49/2115/055/ OVC PTLY THN HIER CLDS W
SUN/MOON OCNL VSBL VSBY SW BRFLY 8 NE BRFLY 1/4
THN FG DRFTTG OVR SMT HVY CONDENSATION ALL SFCS/
8/6// 51012 10050 20048

10 A.M.
Weather: Scattered variable broken stratocumulus,
broken dense cirrus, overcast cirrus, thin spots in the
overcast SW
Temperature: 54F; Dew Point 51F; Wind: SSW at 22G27 kts,
Peak Wind: 27 kts SSW @ 9:53 AM EST
Sea-level pressure: 30.47 ins. Hg,falling
Visibility: 35 miles, except 45 miles WNW, distant fog/haze
BHO SA 1455 8 SCT E220 BKN 250 OVC 35 320/54/51/2122G27/047/ 8 SCT OCNL BKN
THN SPTS IOC SW PTCHS DNS CI ALQDS VSBY WNW 45 DSNT THN FH PK WND 2127/53/ 8/502 58024

1 P.M.
Weather: Scattered stratocumulus, scattered dense ci, thin
broken cirrus
Temperature: 61F; Dew Point 48F; Wind: SW at 235G30 kts,
Peak Wind: 30 kts SW @ 12:55 PM EST
Sea-level pressure: 30.37 ins. Hg, falling then more rapidly
Visibility: 50 miles, light distant haze
BHO SA 1755 30 SCT 220 SCT 250 –BKN 50 286/61/48/2323G30/037/
FEW ACSL NW FEW PTCHS DNS CI LGT DSNT HZ PK WND 2230/55/
8/541 58034 10062 20049
6-hr max. temp: 62F
6-hr min. temp: 49F

SUMMARY FOR THURSDAY, NOVEMBER 26, 2015 THANKSGIVING DAY

TEMPERATURE (DEGREES F)
MAX…..58   NORMAL…..46
MIN…..37   NORMAL…..31
MEAN….48   NORMAL…..38

DEPARTURE FROM 30-YEAR NORMAL…………………+10
TOTAL DEPARTURE FOR THE MONTH………………..+129 [+4.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..17   DEPARTURE………-10
TOTAL HEATING UNITS FOR THE MONTH………….458   DEPARTURE……..-129
TOTAL HEATING UNITS FOR THE SEASON…………912   DEPARTURE……..-239
TOTAL HEATING UNITS LAST SEASON TO DATE……1026   DIFFERENCE…….-114

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….33 S   AT 12:05 P.M.
ASOS……………………35 S   AT 12:04 P.M.
DAVIS…………………..34 SSW AT 12:04 P.M. RMY 35
FASTEST MILE FOR YESTERDAY…………………26 S   AT 12:05 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………28 S   AT 12:05 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..26 SSW AT 12:05 P.M.
AVERAGE WIND SPEED AND DIRECTION……………16.3 S
ASOS……………………15.1
DAVIS…………………..14.7 S [180 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.00 DEPARTURE…..-0.16
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..2.40 DEPARTURE…..-1.71
ASOS……………2.42
TOTAL PRECIPITATION FOR THE YEAR………..39.23 DEPARTURE…..-8.65
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/006/01                  30 SSW RMY 31
11/2 62/47/55/+9/0.00/476/77               24 W   RMY N/A
11/3 71/44/58/+12/0.00/616/100             25 W   RMY 25
11/4 66/49/58/+13/0.00/601/98              22 SSW RMY N/A
11/5 72/51/62/+17/0.00/281/46              31 SW RMY 36
11/6 71/60/66/+21/0.00/109/18              35 SSW RMY 38
11/7 64/46/55/+10/0.00/029/04              33 WNW RMY 35
11/8 54/39/47/+3/0.00/591/98               26 NW RMY 30
11/9 59/38/49/+5/0.00/577/96               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/…./385/65               40 WSW RMY 47
11/14 45/31/38/-4/0.00/425/72               40 NW RMY 47
11/15 51/31/41/-1/0.00/…/..               25 W   RMY 27
11/16 59/36/48/+6/0.00/…/..               25 NNW RMY 29
11/17 45/28/37/-4/0.00/…/..               18 NNE RMY N/A
11/18 50/35/43/+2/0.00/…/..               17 SSE RMY N/A
11/19 55/38/47/+6/…./…/..               29 SSE RMY N/A
11/20 58/41/50/+10/…./…/..              43 SSE RMY N/A
11/21 46/35/41/+1/0.00/…/..               20 ENE RMY 21
11/22 45/35/40/+0/…./000/00               26 NW RMY 28
11/23 40/25/33/-6/0.00/…/..               24 NW RMY 29
11/24 42/23/33/-6/0.00/…/..               20 WSW RMY 19
11/25 46/31/39/+0/0.00/…/..               18 SSE RMY N/A
11/26 58/37/48/+10/0.00/…/..              33 S   RMY 35