Tuesday, September 2, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, SEPTEMBER 2, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
DEW POINTS REACH LOWER 70S THIS MORNING WITH
THE MERCURY RISING TO 91F FOR ONLY THE SECOND
TIME THIS SUMMER.
Following a warm night, temperatures were on the
rise once again with an overnight minimum of 70F.
Fog, which obscured visibility to 1/2 of a mile
yesterday morning, returned much thinner this
morning limiting visibility to 12 miles in all directions.
AUGUST 2014 PRELIMINARY STATS
TEMPERATURE [deg. F]
Av. Max. 78.8
Av. Min. 59.7
Mean 69.3 [-1.2]
24-hour corr. mean: 68.6
Max. temp. for month: 89 on 26th and 27th
Min. temp. for month: 54 on 19th and 29th
Total heating degree day units: 2
Total cooling degree day units: 142
Total seasonal cooling units: 479 [-58]
Season [1/1 thru 8/31]
PRECIPITATION [ins.]
Total: 1.55 [-2.48] Greatest one calendar day: 1.09 [13th] Greatest in 24 hours 1.09 [13th]
WIND
Av. wind speed: 9.4 MPH
Av. corr. wind speed: 10.1 MPH
Prevailing direction: SSW @ 14% possible
SUNSHINE
Total astronomical minutes: 17908 of possible 25727 or 70%
Total Campbell Stokes card minutes: 17910 of possible 25751 or 70%
Today’s Observations:
7 A.M.
Weather: Light fog in all directions, few stratus fractus E-SW,
scattered cirrus fibratus
Temperature: 75F; Dew Point: 71F; Wind: estimated S at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.93 ins. Hg, increasing, then more quickly
Visibility: 12 miles, obscured by light fog in all directions
6-hr max temp: 75F
6-hr min temp: 70F
24-hr precip: 0.00
BHO SA 1155 200 SCT 12 134/75/71/E1906/993/ FEW STFRA E-SW FEW AC
NE-SSE LGT FG ALQDS HAZY WND LGT/ 8/761 53008 10075 20070
10 A.M.
Weather: Few small cumulus in all directions,
scattered cirrus fibratus
Temperature: 87F; Dew Point: 72F; Wind: estimated SW at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.92 ins. Hg, rising, then falling
Visibility: 25 miles, hazy
BHO SA 1455 250 SCT 25 133/87/72/E2306/992/ FEW SML CU ALQDS
HAZY WND LGT/ 8/101 58001
1 P.M.
Weather: Scattered moderate cumulus, broken cirrus
fibratus, showers distant WNW
Temperature: 89F; Dew Point: 69F; Wind: SSW at 10G18 kts,
Sea-level pressure: 29.85 ins. Hg, falling, then more slowly
Visibility: 25 miles, hazy in all directions, 20 miles WNW,
obscured by showers
6-hr max. temp: 91F
6-hr min. temp: 74F
BHO SA 1755 39 SCT E250 BKN 25 107/89/69/2110G18/985/
SHWRS DSNT WNW VSBY WNW 20 MI MDT CU ALQDS HAZY/
8/201 56026 10091 20074
WEATHER SUMMARY FOR MONDAY, SEPTEMBER 1, 2014
TEMPERATURE (DEGREES F)
MAX…..88 NORMAL…..76
MIN…..69 NORMAL…..59
MEAN….79 NORMAL…..68
DEPARTURE FROM 30-YEAR NORMAL……………………+11
TOTAL DEPARTURE FOR THE MONTH……………………+11 [+11.2 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY………….14 DEPARTURE……….+10
TOTAL COOLING UNITS FOR THE MONTH………….14 DEPARTURE……….+10
TOTAL COOLING UNITS FOR THE SEASON………..493 DEPARTURE……….-48
TOTAL COOLING UNITS LAST SEASON TO DATE……647 DIFFERENCE……..-154
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………16 W AT 1:17 P.M.*
ASOS…………………..19 W AT 12:27 P.M.
DAVIS………………….N/A RMY 19
FASTEST MILE FOR YESTERDAY………………..12 W AT 12:27 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..14 W AT 2:11 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….N/A
AVERAGE WIND SPEED AND DIRECTION…………..8.0 SW
ASOS…………………..8.2
DAVIS………………….7.4 WSW [241 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……….-0.11
ASOS…………..0.00
TOTAL PRECIPITATION FOR SEPTEMBER……….0.00 DEPARTURE……….-0.11
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE YEAR……….31.18 DEPARTURE……….-3.84
ASOS………….31.43
PRELIMINARY CLIMATE SUMMARY FOR AUGUST & SEPTEMBER 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/+3/0.00/598/69 25 S RMY 29
8/2 68/59/64/-8/0.11/009/01 21 ESE RMY 22
8/3 71/60/66/-6/0.01/104/12 12 SE RMY 12
8/4 83/64/74/+2/0.00/550/64 20 S RMY 21
8/5 87/66/77/+5/0.00/798/93 17 S RMY 19
8/6 79/64/72/0/0.07/462/54 23 WNW RMY 25
8/7 79/58/69/-3/T/589/69 22 NW RMY 24 TSTM
8/8 82/55/69/-3/0.00/817/96 20 WNW RMY 20
8/9 82/60/71/-1/0.00/730/86 16 WNW RMY 17
8/10 84/63/74/+3/0.00/770/91 15 W RMY N/A
8/11 85/63/74/+3/0.00/667/79 25 S RMY 29
8/12 81/64/73/+2/0.00/387/46 25 SSE RMY N/A
8/13 69/61/65/-6/1.09/000/00 35 ESE RMY 37
8/14 73/57/65/-6/0.00/828/99 27 W RMY 29
8/15 74/56/65/-6/0.09/459/55 23 W RMY 23 TSTM
8/16 76/56/66/-5/0.00/640/77 24 SW RMY 27
8/17 78/60/69/-2/0.01/555/67 21 WNW RMY 23
8/18 77/56/67/-4/0.00/776/94 23 WNW RMY 25
8/19 78/54/66/-4/0.00/816/99 17 WNW RMY 17
8/20 78/58/68/-2/0.00/813/99 15 NE RMY 15
8/21 76/58/67/-3/T/434/53 16 ENE RMY 17
8/22 71/60/66/-4/0.07/057/07 17 NE RMY 19
8/23 71/58/65/-5/0.00/618/76 22 ENE RMY 25
8/24 78/58/68/-2/0.00/811/100 16 ENE RMY N/A
8/25 85/63/74/+5/0.00/808/100 16 NW RMY 17
8/26 89/62/70/+7/0.00/781/97 20 SSW RMY 23
8/27 89/64/77/+8/0.03/731/91 23 SW RMY 25
8/28 80/59/70/+1/0.00/640/80 25 NW RMY 28
8/29 73/54/64/-5/0.00/787/99 18 E RMY 21
8/30 77/55/66/-2/0.00/723/91 23 S RMY 28
8/31 83/63/73/+5/0.07/150/19 26 SSW RMY 31
9/1 88/69/79/+11/0.00/…/.. 16 W RMY 19
9/2 morning low temp: 70F; normal low now 59F
DAILY RECORDS FOR AUGUST 2014:
None so far.
DAILY RECORDS FOR SEPTEMBER 2014:
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR SEPTEMBER 2
HIGH 99F IN 1953 (SEPTEMBER MAXIMUM RECORD)
LOW 44F IN 1909
PRECIP 2.73 INCHES IN 1947
PEAK GUST 55e MPH WNW IN 1944
RECORDS FOR SEPTEMBER 3
HIGH 95F IN 1929
LOW 43F IN 1983
PRECIP 3.82 INCHES IN 1972 (TROPICAL STORM CARRIE)
PEAK GUST 58 MPH NNE IN 1972 (TROPICAL STORM CARRIE)
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
