Wednesday, November 25, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 25, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
BACK TO BACK COOLER THAN NORMAL DAYS AS
TEMPERATURES STILL AVERAGE 5 DEGREES ABOVE
NORMAL FOR THE MONTH.
A thermal inversion was in place this morning, with a minimum
temperature of 16F reported at Norwood Memorial Airpot (KOWD)
while a minimum of 31F was recorded on the summit of Great
Blue Hill.
Clear skies and very high station pressure have been the
main features of today, with some lower level haze limiting
visibility to 50 miles at the 7:00 AM EST observation.
By the 1:00 PM EST observation skies were still mostly sunny
with only a few cumulus/stratocumulus and distant cirrus. Hazy
conditions had limited visibility to 50 miles, with a maximum
temperature of 45F so far.
Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant offshore NNE-SE,
few cirrus distant W and N, inversion present below station
in all directions
Temperature: 33F; Dew Point: 24F; Wind: NE at 8 kts
Sea-level pressure: 30.71 ins. Hg, rising, then more quickly
Visibility: 50 miles, light distant haze in all directions
6-hr Max temp: 33F
6-hr Min temp: 31F
24-hr precip: 0.00 ins.
BHO SA 1155 CLR 50 040/33/24/0408/071/ FEW SC DSNT OFFSHR NNE-SE
FEW CI DSNT W AND N INVSN PRSNT BLO SMT ALQDS LGT DSNT HZ ALQDS/
8/501 53031 10033 20031
10 A.M.
Weather: Clear, few stratocumulus distant offshore NE-E and SE,
few cirrus overhead and E
Temperature: 41F; Dew Point 26F; Wind: estimated E at 3 kts,
Wind Speed and Direction: Light and Variable
Sea-level pressure: 30.80 ins. Hg, rising, then more slowly
Visibility: 40 miles, hazy
BHO SA 1455 CLR 40 429/41/26/E0903/080/ FEW SC DSNT OFFSHR NE-E
AND SE FEW CI OVHD AND E HAZY WND LGT AND VRB/ 8/501 51029
1 P.M.
Weather: Clear, few cumulus/stratocumulus in all directions,
few cirrus distant S
Temperature: 45F; Dew Point: 24F; Wind: estimated E at 4 kts
Wind Speed and Direction: Light and Variable
Sea-level pressure: 30.80 ins. Hg. rising, then falling but
higher still
Visibility: 50 miles, hazy
6-hr max. temp. 45F
6-hr min. temp. 33F
BHO SA 1755 CLR 50 430/45/24/E0904/080/ FEW SC/CU ALQDS FEW CI
DSNT S HAZY WND LGT AND VRB/ 8/101 50001 10045 20033
SUMMARY FOR TUESDAY, NOVEMBER 24, 2015
TEMPERATURE (DEGREES F)
MAX…..42 NORMAL…..47
MIN…..23 NORMAL…..31
MEAN….33 NORMAL…..39
DEPARTURE FROM 30-YEAR NORMAL………………….-6
TOTAL DEPARTURE FOR THE MONTH………………..+119 [+4.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..32 DEPARTURE……….+6
TOTAL HEATING UNITS FOR THE MONTH………….415 DEPARTURE……..-119
TOTAL HEATING UNITS FOR THE SEASON…………869 DEPARTURE……..-228
TOTAL HEATING UNITS LAST SEASON TO DATE…….987 DIFFERENCE…….-118
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….20 WSW AT 2:18 P.M.
ASOS……………………21 SW AT 2:18 P.M.
DAVIS…………………..19 WSW AT 2:18 P.M. RMY 19
FASTEST MILE FOR YESTERDAY…………………14 W AT 2:28 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 W AT 2:29 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13 W AT 2:29 P.M.
AVERAGE WIND SPEED AND DIRECTION…………….9.8 W
ASOS……………………10.0
DAVIS……………………8.6 W [282 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…..-1.39
ASOS……………2.42
TOTAL PRECIPITATION FOR THE YEAR………..39.23 DEPARTURE…..-8.33
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 low since midnight is 31F; normal low is now 31F
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 25
HIGH 71 IN 1979
LOW 13 IN 1938
PRECIP 3.10 INCHES IN 1983
SNOWFALL 8.0 INS IN 1888
PEAK GUST 94e E IN 1950
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
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
