Friday, October 10, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, OCTOBER 10, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
COLDER TEMPERATURES THIS MORNING DOWN TO 43F FROM 48F
YESTERDAY MORNING
TEMPERATURE INVERSION WITH FROSTY COLD 30F AT NORWOOD
AIRPORT THIS MORNING
The low temperature of 43F this morning was our 2nd coldest
reading of the season to date after 42F on October 6. A low
of 30F was recorded at nearby Norwood Airport, the traditional
spot during a night of radiational cooling such as we had last
night. Boston’s Logan Airport’s low was a much milder 51F.
Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus, two levels, few altocumulus and
altocumulus lenticularis distant SSW-SW
Temperature: 45F; Dew Point: 38F; Wind: WSW at 9 kts
Sea-level pressure: 30.08 ins. Hg, rising then more quickly
Visibility: 80 miles
6-hr max temp: 50F
6-hr min temp: 43F
24-hr precip: 0.00
BHO 1155 250 -SCT 300 -SCT 80 187/45/38/2509/008/ FEW AC/ACSL
DSNT SSW-SW CI MSTLY E-S/ 8/041 53016 10050 20043
10 A.M.
Weather: Thin scattered cirrus, cirrocumulus, stratocumulus distant
WSW-NW, cirrocumulus overhead, lower cirrus distant SSW-SW
Temperature: 57F; Dew Point: 36F; Wind: WNW at 6 kts,
Sea-level pressure: 30.10 ins. Hg, rising then falling slightly
Visibility: 75 miles, light distant haze
BHO SA 1455 250 -SCT 75 190/57/36/3006/010/ SC DSNT WSW-NW
FEW CC OVHD LWR CI DSNT SSW-WSW LGT DSNT HZ/ 8/501 50003
1 P.M.
Weather: Scattered dense cirrus (SE-WSW), thin broken cirrus at
two levels, cumulus mostly distant SW-N
Temperature: 61F; Dew Point: 36F; Wind: W at 8 kts,
Wind: Direction variable SW to NW
Sea-level pressure: 30.05 ins. Hg, falling, then more quickly
Visibility: 75 miles, light distant haze
6-hr max temp: 63F
6-hr min temp: 45F
BHO SA 1755 220 SCT 250 -BKN 300 -BKN 75 175/61/36/2707/005/
CU MSTLY DSNT SW-N DNS CI SE-WSW CI INVADING CLR SKY N
WND 23V31/ 8/106 58015 10063 20045
WEATHER SUMMARY FOR THURSDAY, OCTOBER 9, 2014
TEMPERATURE (DEGREES F)
MAX…..64 NORMAL…..63
MIN…..48 NORMAL…..45
MEAN….56 NORMAL…..54
DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH……………………+11 [+1.0 DEGREE/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE…………0
TOTAL COOLING UNITS FOR THE MONTH……………0 DEPARTURE………..-3
TOTAL COOLING UNITS FOR THE SEASON…………587 DEPARTURE……….-13
TOTAL COOLING UNITS LAST SEASON TO DATE…….701 DIFFERENCE……..-114
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………9 DEPARTURE………..-2
TOTAL HEATING UNITS FOR THE MONTH…………..81 DEPARTURE………..-8
TOTAL HEATING UNITS FOR THE SEASON…………182 DEPARTURE……….-49
TOTAL HEATING UNITS LAST SEASON TO DATE…….181 DIFFERENCE……….+1
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………35 W AT 10:30 A.M.
ASOS…………………..37 W AT 11:53 A.M.
DAVIS………………….37 WSW AT 10:30 A.M. RMY 39
FASTEST MILE FOR YESTERDAY………………..28 W AT 10:31 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..28 W AT 10:31 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….26 W AT 10:32 A.M.
AVERAGE WIND SPEED AND DIRECTION………….14.0 W
ASOS………………….13.5
DAVIS…………………12.3 W (260 degrees)
* Last of several occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……..-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….2.29 DEPARTURE……..+0.96
ASOS…………..2.29
TOTAL PRECIPITATION FOR THE YEAR……….33.88 DEPARTURE……..-6.53
ASOS………….34.09
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
10/1 56/55/56/-1/1.63/000/00 33 NE RMY 36
10/2 55/47/51/-6/0.29/000/00 30 NE RMY N/A
10/3 54/46/50/-6/0.05/000/00 20 NE RMY 20
10/4 63/52/58/+2/0.30/000/00 30 SE RMY 32
10/5 60/45/53/-3/0.00/…/.. 26 W RMY 28
10/6 66/42/54/-1/0.00/…/.. 25 SSE RMY N/A
10/7 72/54/63/+8/0.01/…/.. 43 S RMY 49
10/8 72/53/63/+9/0.01/…/.. 40 S RMY N/A
10/9 64/48/56/+2/0.00/…/.. 35 W RMY 39
10/10 morning low temp: 43F since midnight; normal low now 45F
DAILY RECORDS FOR OCTOBER 2014:
10/1 – NEW RECORD DAILY PRECIPITATION OF 1.63 INCHES;
surpasses the previous record of 1.44 ins. in 1984
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 10
HIGH 85F IN 1949
LOW 27F IN 1929
PRECIP 2.02 INCHES IN 1998
SNOWFALL 6.8 INCHES IN 1979 (RECORD FOR MONTH)
PEAK GUST 59 MPH WNW IN 1958
RECORDS FOR OCTOBER 11
HIGH 80F IN 1919,1949
LOW 28F IN 1993
PRECIP 0.96 INCHES IN 1903
SNOWFALL (NONE)
PEAK GUST 66e MPH WNW IN 1941
TODAY’S REPORT PREPARED BY: Robert Skilling
