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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MAY 14, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
SIGNIFICANT COOL DOWN ON TUESDY WITH HIGHS ONLY
REACHING 54F
Follow Monday’s summer-like conditions, Tuesday took the form
of an early spring day with temperatures barely reaching out
of the upper 40s. Winds stayed predominately out of the ENE
keeping a steady supply of cool maritime air in place. A brief
shower overnight left a trace of new precipitation as well.
The mercury dipped to 42F overnight, 5 degrees below the daily
norm minimum of 47F. By 1:00 PM EST the mercury had climbed to
a maximum of 70F so far with partly cloudy skies and hazy
conditions.
Today’s Observations:
7 A.M.
Weather: Scattered altocumulus, broken cirrus fibratus,
few cumulus distant offshore NNE-ESE
Temperature: 49F; Dew Point: 42F; Wind: SSE at 5 kts
Wind Speed: Light
Sea-level pressure: 30.33 ins. Hg, rising, then falling,
but higher than 3 hours ago
Visibility: 25 miles, thin fog in all directions
6-hr max temp: 49F
6-hr min temp: 42F
24-hr precip: Trace
BHO SA 1155 50 SCT E250 BKN 25 271/49/42/E1605/033/
FEW CU DSNT OFFSHR NNE-ESE THN FG ALQDS WND LGT/
8/151 50003 10049 20042 MANUAL 6000/
10 A.M.
Weather: Few altocumulus lenticularis in all directions,
scattered cirrocumulus
Temperature: 60F; Dew Point: 41F; Wind: SE at 5 kts
Wind Speed and Direction: Light and variable
Sea-level pressure: 30.34 ins. Hg, rising, then falling,
but higher than 3 hours ago
Visibility: 30 miles, 25 miles NNW-ENE, distant haze
in all directions
BHO SA 1455 200 SCT 30 273/60/41/E13005/034/
FEW ACSL DSNT ALQDS VSBY NNW-ENE 25 MI DSNT HZ ALQDS
WND LGT AND VRB/ 8/049 50002
1 P.M.
Weather: Scattered altocumulus, scattered cirrus fibratus,
few altocumulus lenticularis distant S-E
Temperature: 69F; Dew Point: 44F; Wind: S at 7 kts
Wind Direction: Varying SSE-SW
Sea-level pressure: 30.31 ins. Hg, falling, then more quickly
Visibility: 35 miles, 30 miles WNW-E, distant haze in all directions
6-hr max temp: 70F
6-hr min temp: 49F
BHO SA 1755 90 SCT 250 SCT 35 265/69/44/1907/031/
FEW ACSL DSNT S-E VSBY WNW-E 30 MI DSNT HZ ALQDS WND 15V23/
8/041 58008 10070 20049
WEATHER SUMMARY FOR TUESDAY, MAY 13, 2014
TEMPERATURE (DEGREES F)
MAX…..54 NORMAL…..66
MIN…..42 NORMAL…..47
MEAN….48 NORMAL…..56
DEPARTURE FROM 30-YEAR NORMAL……………………..-8
TOTAL DEPARTURE FOR THE MONTH…………………….+44 [+3.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..17 DEPARTURE……….+8
TOTAL HEATING UNITS FOR THE MONTH………….101 DEPARTURE………-41
TOTAL HEATING UNITS FOR THE SEASON………..6272 DEPARTURE………+95
TOTAL HEATING UNITS LAST SEASON TO DATE……5629 DIFFERENCE…….+643
COOLING DEGREE DAYS (SEASON JUN-OCT)
TOTAL COOLING UNITS FOR YESTERDAY…………..0 DEPARTURE……….0
TOTAL COOLING UNITS FOR THE MONTH…………..9 DEPARTURE………+9
TOTAL COOLING UNITS FOR THE SEASON………….9 DEPARTURE………+9
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………32 NE AT 12:04 A.M.
ASOS…………………..36 NE AT 12:04 A.M.
DAVIS………………….33 NE AT 12:30 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..24 ENE AT 12:31 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..24 ENE AT 12:35 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….N/A
AVERAGE WIND SPEED AND DIRECTION…………..10.3 ENE
ASOS…………………..10.2
DAVIS………………….9.7 ENE [060 deg]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…TRACE DEPARTURE………….-0.12
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.66 DEPARTURE………….-0.93
ASOS…………..0.65
TOTAL PRECIPITATION FOR THE YEAR……….19.78 DEPARTURE………….-0.36
ASOS………….20.18
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……………0.0
TOTAL SNOWFALL FOR THE MONTH…………….0.0 DEPARTURE……………0.0
TOTAL SNOWFALL FOR THE SEASON…………..85.6 DEPARTURE………….+22.9
PRELIMINARY CLIMATE SUMMARY FOR MAY 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
5/1 64/43/54/+1/0.49/0.0/093/11 32 SSE RMY 36
5/2 68/51/60/+7/T/0.0/457/54 28 W RMY 29
5/3 66/48/57/+4/…./0.0/332/39 21 SW RMY N/A
5/4 60/47/54/0/0.01/0.0/400/47 51 WNW RMY 54
5/5 64/46/55/+1/T/0.0/592/70 30 NW RMY 32
5/6 63/42/53/-1/T/0.0/506/59 30 NW RMY 30
5/7 64/42/55/0/0.00/0.0/…/.. 21 WNW RMY 23
5/8 69/48/59/+4/0.00/0.0/…/.. 17 SSW RMY 19
5/9 57/51/54/-1/…./0.0/000/00 21 S RMY N/A
5/10 78/57/68/+13/…./0.0/…/.. 33 S RMY 37
5/11 79/58/69/+13/…./0.0/…/.. 30 W RMY 34
5/12 85/49/67/+11/0.00/0.0/…/.. 39 NE RMY 42
5/13 54/42/48/-8/…./…/…/.. 32 NE RMY N/A
5/14 morning low temp: 42F; the normal low is now 47F
DAILY RECORDS FOR MAY 2014
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR MAY 14
HIGH 85F IN 1961
LOW 33F IN 1895
PRECIP 1.93 INCHES IN 2006
PEAK GUST 53 MPH S IN 2009
RECORDS FOR MAY 15
HIGH 93F IN 1900
LOW 36F IN 1947,1985
PRECIP 1.63 INCHES IN 1978
PEAK GUST 53e MPH NE IN 1978, W 2002
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
