Thursday, August 7, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, AUGUST 7, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
ISOLATED T-STORMS BUILD ON BACK-TO-BACK DAYS
Clear mornings have led to building cumulus and
the development of several isolated thunderstorms
both yesterday afternoon and today. Cloud to ground
lightning with thunder was observed in one isolated
cell north and west of the station at 12:09 EST
moving east.
By the 1:00 PM EST observation skies were chaotic
with a strong thunderstorm cell ENE of the station
along the shore. A towering cumulus was just SW of
the station as well. A maximum of 78F had been reached
with only a trace of rain recorded during a very brief
shower.
JULY 2014 PRELIMINARY STATS NOW ARE ON WEB PAGE
The July stats are now included on our web page: bluehill.org
Today’s Observations:
7 A.M.
Weather: Few altocumulus distant W-E, few cirrocumulus NE-ENE
Temperature: 64F; Dew Point: 54F; Wind: NW at 8 kts
Sea-level pressure: 29.91 ins. Hg, rising, then more quickly
Visibility: 40 miles, light distant haze in all directions
6-hr max temp: 64F
6-hr min temp: 59F
24-hr precip: 0.02 in
BHO SA 1155 CLR 40 127/64/54/3208/991/ FEW AC DSNT W-E FEW CC
NE-ENE LGT DSNT HZ ALQDS/ 8/039 53011 ASOS 70001 MANUAL 70002
10064 20059
10 A.M.
Weather: Few cumulus distant WSW-N, few altocumulus
lenticularis WSW-NE, few cirrocumulus lenticularis W,
few cirrocumulus in all directions
Temperature: 74F; Dew Point: 57F; Wind: estimated NW at 6 kts,
Wind: Light
Sea-level pressure: 29.91 ins. Hg, rising slightly
Visibility: 40 miles, light distant haze in all directions
BHO SA 1455 CLR 40 128/74/57/E3206/991/ FEW CU DSNT WSW-N
FEW ACSL WSW-NW FEW CCSL W FEW CC ALQDS LG DSNT HZ ALQDS
WND LGT/ 8/149 50001
1 P.M.
Weather: Thunderstorm, cumulonimbus ENE moving WSW,
brief cloud to ground lightning, towering cumulus SW,
few cumulus fractus in all directions, scattered
moderate cumulus, broken cirrostratus, cirrocumulus
lenticularis WNW-N
Temperature: 75F; Dew Point: 54F; Wind: WNW at 10G16 kts
Sea-level pressure: 29.86 ins. Hg, falling, then more quickly
Visibility: 35 miles, 20 miles ENE-ESE, obscured by rain showers
6-hr max temp: 78F
6-hr min. temp: 64F
6-hr precip: Trace
BHO SA 1755 80 SCT 100 BKN 35T 117/75/54/3310G16/986/
TB09 CB ENE MOV WSW BRFLY LGTCG VSBY ENE-ESE 20 MI
TCU SW CCSL WNW-N FEW CUFRA ALQDS LGT DSNT HZ ALQDS/
8/389 58011 MANUAL 6000/ 10078 20064
WEATHER SUMMARY FOR WEDNESDAY, AUGUST 6, 2014
TEMPERATURE (DEGREES F)
MAX…..79 NORMAL…..81
MIN…..64 NORMAL…..63
MEAN….72 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL…………………….+0
TOTAL DEPARTURE FOR THE MONTH…………………….-4 [-0.5 DEGREE/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..7 DEPARTURE……….+0
TOTAL COOLING UNITS FOR THE MONTH………….39 DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE SEASON………..376 DEPARTURE………-18
TOTAL COOLING UNITS LAST SEASON TO DATE……508 DIFFERENCE…….-132
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………23 WNW AT 2:29 P.M.
ASOS…………………..25 WNW AT 2:29 P.M.
DAVIS………………….24 WNW AT 2:29 P.M. RMY 25
FASTEST MILE FOR YESTERDAY………………..14 WNW AT 2:26 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..16 WNW AT 2:30 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….15 WNW AT 2:30 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..8.5 NW
ASOS…………………..9.0
DAVIS………………….7.3 NW [306 deg.]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.02 DEPARTURE……….-0.13
ASOS…………..0.01
TOTAL PRECIPITATION FOR AUGUST………….0.19 DEPARTURE……….-0.71
ASOS…………..0.15
TOTAL PRECIPITATION FOR THE YEAR……….29.82 DEPARTURE……….-2.07
ASOS………….30.06
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 86/63/75/+3/0.00/…/.. 25 S RMY 29
8/2 68/59/64/-8/…./…/.. 21 ESE RMY 22
8/3 71/60/66/-6/…./…/.. 12 SE RMY 12
8/4 83/64/74/+2/0.00/…/.. 20 S RMY 21
8/5 87/66/77/+5/0.00/…/.. 17 S RMY 19
8/6 79/64/72/0/7/…./…/.. 23 WNW RMY 25
8/7 morning low of 59F; the normal low is now 63F
DAILY RECORDS FOR AUGUST 2014:
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 7
HIGH 95F IN 1924
LOW 51F IN 2004
PRECIP 3.32 INCHES IN 1926
PEAK GUST 51 MPH NE 1975
RECORDS FOR AUGUST 8
HIGH 93F IN 1909,1949
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
