Thursday, November 26, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 26, 2015 THANKSGIVING DAY
ALL TIMES ARE IN EASTERN STANDARD TIME

HAPPY THANKSGIVING! BAROMETER CLIMBS TO NEAR
RECORD HIGH, SEA LEVEL PRESSURE APPROACHES 30.88 INCHES

An area of high pressure just offshore has increased in
strength since yesterday when barometer readings at the
station were already at very high levels. A preliminary
reading using our mercury barometer indicated a maximum
sea level pressure reading of 30.876 inches last evening.
Our station record is 31.08 inches set back in 1981.

Clouds that built overnight have diminished this morning
to reveal mostly sunny conditions. Visibility has been
limited for most of the morning with high levels of
humidity present and thin fog.

Today’s Observations:

7 A.M.
Weather: Broken stratocumulus
Temperature: 41F; Dew Point: 37F; Wind: SSE at 15 kts
Sea-level pressure: 30.87 ins. Hg, rising, then more quickly
Visibility: 25 miles, expect 60 miles E-SSE, thin fog
6-hr Max temp: 41F
6-hr Min temp: 39F
24-hr precip: 0.00 ins.
BHO SA 1155 E40 BKN 25 453/41/37/1515/087/
VSBY E-SSE 60 MI THN FG ALQDS/ 8/500 53003 10041 20039

10 A.M.
Weather: Scattered stratocumulus, scattered cirrus
Temperature: 49F; Dew Point 42F; Wind: SSE at 15G22 kts,
Peak Wind: 26 kts SSE @ 9:13 AM EST
Sea-level pressure: 30.86 ins. Hg, rising, then falling and lower
Visibility: 30 miles, except 20 miles WSW-W, thin fog
BHO SA 1455 31 SCT 250 SCT 30 451/49/42/161522G/086/
VSBY WSW-W 20 MI THN FG ALQDS PK WND 1626/13/ 8/501 58002

SUMMARY FOR WEDNESDAY, NOVEMBER 25, 2015

TEMPERATURE (DEGREES F)
MAX…..46   NORMAL…..47
MIN…..31   NORMAL…..31
MEAN….39   NORMAL…..39

DEPARTURE FROM 30-YEAR NORMAL………………….+0
TOTAL DEPARTURE FOR THE MONTH………………..+119  [+4.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..26   DEPARTURE……….+0
TOTAL HEATING UNITS FOR THE MONTH………….441   DEPARTURE……..-119
TOTAL HEATING UNITS FOR THE SEASON…………895   DEPARTURE……..-229
TOTAL HEATING UNITS LAST SEASON TO DATE…….999   DIFFERENCE…….-104

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….18 SSE AT  10:27 P.M.*
ASOS……………………20 SE  AT   9:39 P.M.
DAVIS…………………..20 SE  AT   9:29 P.M. RMY 24
FASTEST MILE FOR YESTERDAY…………………17 SSE AT  11:33 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………16 SSE AT  11:34 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..16 SSE AT  11:34 P.M.
AVERAGE WIND SPEED AND DIRECTION…………….9.0
ASOS…………………….9.2
DAVIS……………………8.1 ESE [110 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…..-1.55
ASOS……………2.42
TOTAL PRECIPITATION FOR THE YEAR………..39.23  DEPARTURE…..-8.49
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 low since midnight is 37F; normal low is now 30F

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 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.22 INS IN 1888
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964

RECORDS FOR NOVEMBER 27
HIGH 68 IN 1896
LOW 5 IN 1932
PRECIP 1.92 INS IN 1898
SNOWFALL 16.0 INS IN 1898
PEAK GUST 68 NW IN 1997

TODAY’S REPORT PREPARED BY: Brian Fitzgerald