Tuesday, August 5, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 5, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
HEAT AND HUMIDITY MAKE A RETURN FOR TUESDAY,
WITH HAZE AND POOR VISIBILITY
Hazy skies have prevented many views beyond 20 miles today,
with limits to visibility down to 12 miles in most directions
for the 7:00 AM EST observation this morning.
A moderating trend in temperature has continued today with
a maximum of 86F by the 1:00 PM EST observation. While there
were showers present in the region yesterday, most were
isolated and north and west of the station.
Some cirrostratus has been visible to our south and east
this morning as well, only hinting at the turbulent skies
associated with Tropical Storm Bertha, which will pass
well off shore tomorrow morning.
JULY 2014 PRELIMINARY STATS
TEMPERATURE [deg. F]
Av. Max. 80.8
Av. Min. 63.5
Mean 72.2 [+0.3]
24-hour corr. mean: 72.0
Max. temp. for month: 91 on 3rd
Min. temp. for month: 55 on 5th
Total heating degree day units: None
Total cooling degree day units: 228
Total seasonal cooling units: 337 [-14]
Season [1/1 thru 7/31]
PRECIPITATION [ins.]
Total: 5.08 [+1.06]
Greatest one calendar day: 2.48 [4th] *
Greatest in 24 hours 2.73 [4-5th]
* new record for date; previous was 1.78 in 1950
WIND
Av. wind speed: 11.4 MPH
Av. corr. wind speed: 11.8 MPH
Prevailing direction: S @ 27% possible
SUNSHINE
Total astronomical minutes: 17566 of possible 27729 or 63%
Total Campbell Stokes card minutes: 16898 of possible 26682 or 63%
Today’s Observations:
7 A.M.
Weather: Clear, few distant cirrostratus E-SW
Temperature: 72F; Dew Point: 65F; Wind: estimated WNW at 4 kts
Wind Speed: Light
Sea-level pressure: 30.05 ins. Hg, rising then rising more quickly
Visibility: 12 miles, hazy
6-hr max temp: 72F
6-hr min temp: 66F
24-hr precip: None
BHO SA 1155 CLR 12 175/72/65/E3004/005/ FEW DSNT CS E-SW HAZY/
8/008 53007 10072 20066
10 A.M.
Weather: Clear, few cumulus in all directions, few distant
cirrostratus distant ENE-SSW
Temperature: 80F; Dew Point: 63F; Wind: estimated ESE at 4 kts
Wind Speed and Direction: Light and Variable
Sea-level pressure: 30.04 ins. Hg, decreasing slightly
Visibility: 15 miles, 20 miles E-SW, hazy
BHO SA 1455 CLR 15 174/80/63/E1204/004/ VSBY E-SW 20 MI FEW CU ALQDS
FEW CS DSNT ENE-SSW HAZY WND LGT AND VRB/ 8/108 58001
1 P.M.
Weather: Clear, few cumulus in all directions
Temperature: 85F; Dew Point: 59F; Wind: estimated WSW at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.99 ins. Hg, falling, then more quickly
Visibility: 15 miles, hazy in all directions
6-hr max temp: 86F
6-hr min temp: 72F
BHO SA 1755 CLR 15 156/85/59/E2406/999/ FEW CU ALQDS HAZY WND LGT/
8/100 58018 10086 20072
WEATHER SUMMARY FOR MONDAY, AUGUST 4, 2014
TEMPERATURE (DEGREES F)
MAX…..83 NORMAL…..81
MIN…..64 NORMAL…..63
MEAN….74 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH…………………….-9 [-2.1 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..9 DEPARTURE……….+2
TOTAL COOLING UNITS FOR THE MONTH………….20 DEPARTURE……….-9
TOTAL COOLING UNITS FOR THE SEASON………..357 DEPARTURE………-23
TOTAL COOLING UNITS LAST SEASON TO DATE……506 DIFFERENCE…….-149
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………20 S AT 6:03 P.M.
ASOS…………………..21 SSW AT 6:04 P.M.
DAVIS………………….20 SW AT 6:02 P.M. RMY 21
FASTEST MILE FOR YESTERDAY………………..16 S AT 6:07 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..16 SSW AT 6:25 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….15 SSW AT 6:05 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.2 WSW
ASOS…………………..7.9
DAVIS………………….6.5 WSW [233 deg.]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……….-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR AUGUST………….0.12 DEPARTURE……….-0.48
ASOS…………..0.10
TOTAL PRECIPITATION FOR THE YEAR……….29.75 DEPARTURE……….-1.84
ASOS………….29.66
PRELIMINARY CLIMATE SUMMARY FOR JULY-AUGUST 2014 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
7/1 85/66/76/+6/0.00/695/76 31 SSW RMY 36
7/2 89/69/79/+9/T/639/70 33 SSW RMY 38
7/3 91/68/80/+9/0.05/611/67 29 W RMY 30 TSTM
7/4 72/61/67/-4/2.48/027/03 28 N RMY N/A TSTM
7/5 77/55/66/-5/0.27/738/81 36 NW RMY N/A
7/6 83/61/72/+1/0.00/892/98 29 SW RMY 33
7/7 85/65/75/+4/T/563/62 33 SW RMY 38 TSTM [NO RAIN]
7/8 89/70/80/+8/0.00/763/84 31 SW RMY 38
7/9 86/70/78/+6/0.00/779/86 28 SSW RMY N/A
7/10 80/65/73/+1/0.00/597/66 16 NW RMY N/A
7/11 76/62/69/-3/0.00/732/81 22 NE RMY N/A
7/12 85/60/73/+1/0.00/849/94 21 S RMY 25
7/13 82/64/73/+1/0.01/676/75 31 S RMY 35
7/14 83/69/76/+4/0.54/207/23 25 S RMY 27
7/15 82/70/76/+4/0.02/135/15 26 S RMY 29 TSTM
7/16 73/65/69/-3/0.98/000/00 27 SSW RMY 32 TSTM
7/17 79/62/71/-1/T/573/64 15 WSW RMY 17
7/18 80/60/70/-2/0.00/822/92 15 NW RMY 16
7/19 77/63/70/-2/0.00/054/06 13 E RMY 14
7/20 72/60/66/-6/T/312/35 16 ENE RMY 16
7/21 76/59/68/-4/0.00/667/75 16 E RMY 19
7/22 88/63/76/+4/0.00/816/92 22 SSW RMY 25
7/23 88/68/78/+6/0.00/770/87 29 S RMY 32
7/24 74/63/69/-3/0.01/291/33 18 ENE RMY 18
7/25 80/56/68/-4/0.00/811/92 18 NW RMY N/A
7/26 82/63/73/+1/0.00/616/70 28 SSW RMY 32
7/27 75/65/70/-2/0.61/097/11 28 SSE RMY 30 TSTM
7/28 81/65/73/+1/0.11/552/63 36 S RMY 40 TSTM
7/29 78/60/69/-3/0.00/751/86 22 WNW RMY 24
7/30 78/59/69/-3/0.00/749/86 16 W RMY 18
7/31 80/61/71/-1/0.00/782/90 27 S RMY 29
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 morning low of 66F; the normal low is now 63F
DAILY RECORDS FOR JULY 2014:
7/4 NEW DAILY RECORD RAINFALL OF 2.48 ins;
surpasses previous record of 1.78 ins. in 1950
7/16 NEW DAILY RECORD RAINFALL OF 0.98 ins;
surpasses previous record of 0.89 ins. in 1919
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 5
HIGH 98F IN 1955
LOW 48F IN 1929,1972
PRECIP 3.03 INCHES IN 1893
PEAK GUST 60e MPH SW 1977
RECORDS FOR AUGUST 6
HIGH 95F IN 1931
LOW 48F IN 1934
PRECIP 1.47 INCHES IN 1995
PEAK GUST 44e MPH SSW IN 1940
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
