BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, AUGUST 29, 2015 ALL TIMES ARE IN EASTERN STANDARD TIME A THIRD CONSECUTIVE BEAUTIFUL DRY WEATHER LATE AUGUST DAY TEMPERATURES AVERAGED RIGHT ON NORMAL PAST TWO DAYS LONG SPELL OF VERY WARM TO HOT HUMID WEATHER ENDED 26TH Today was a third consecutive day with temperatures running very close to normal for late August. This came after the days August 12-26 were all above normal except for two. Along with the warm to hot spell was an extended period of very humid weather when dew points ran up into the 70's These past several days have had very comfortable much lower humidity with dew points down in the 50's. High and low temperatures have been in a very close to normal range going from around 60 degrees to around 80 degrees. Today's Observations: 7 A.M. Weather: Thin scattered cirrus, 2 levels Temperature: 65F; Dew Point: 53F; Wind: W at 7 kts, Sea-level pressure: 30.21 ins. Hg, rising, then more quickly Visibility: 60 miles, light distant haze 6-hr Max temp: 65F 6-hr Min temp: 60F 24-hr precip: 0.00 ins BHO SA 1155 300 -SCT 60 230/65/53/2807/021/ FEW THN LWR CI 250 LGT DSNT HZ/ 8/001 53011 10065 20060 10 A.M. Weather: Scattered cumulus, thin broken cirrus, few lower cirrus Temperature: 74F; Dew Point 54F; Wind: WSW at 10 kts, Sea-level pressure: 30.22 ins. Hg, rising,then falling slightly and slightly higher than 3 hours ago Visibility: 70 miles, light distant haze BHO SA 1455 50 SCT 250 SCT 300 -BKN 70 232/74/54/2510/022/ LGT DSNT HZ/ 8/101 50002 1 P.M. Weather: Scattered cumulus and stratocumulus generated by the cumulus, scattered dense cirrus, overcast cirrus/cirrostratus Temperature: 78F; Dew Point: 55F; Wind: SW at 09G17 kts Wind: Direction variable SSW-W Sea-level pressure: 30.17 ins. Hg, falling, then more slowly Visibility: 70 miles, light distant haze 6-hr Max temp: 80F 6-hr Min temp: 65F BHO SA 1755 55 SCT E220 BKN 250 OVC 70 216/78/55/2309G17/017/ THN SPTS IOVC WND 20V27 INCRSNG LGT DSNT HZ/ 8/102 56016 10080 20065 SUMMARY FOR FRIDAY, AUGUST 28, 2015 TEMPERATURE (DEGREES F) MAX.....80 NORMAL.....77 MIN.....58 NORMAL.....60 MEAN....69 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL........................+0 TOTAL DEPARTURE FOR THE MONTH.......................+79 [+2.6 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............4 DEPARTURE.........-1 TOTAL COOLING UNITS FOR THE MONTH.............242 DEPARTURE.........+69 TOTAL COOLING UNITS FOR THE SEASON............636 DEPARTURE........+112 TOTAL COOLING UNITS LAST SEASON TO DATE.......470 DIFFERENCE.......+166 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................15 NW AT 3:16 A.M. * ASOS........................16 NW AT 3:16 A.M. DAVIS.......................14 NNW AT 3-4 A.M. RMY N/A FASTEST MILE FOR YESTERDAY.....................12 NW AT 3:16 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................13 NW AT 3:48 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................11 NNW AT 2:53 A.M. AVERAGE WIND SPEED AND DIRECTION...............6.5 NW ASOS........................6.9 DAVIS...................... 6.0 NW [320 deg.] * Last of several occurrences... 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 THE MONTH...........2.90 DEPARTURE.....-0.80 ASOS..............2.88 TOTAL PRECIPITATION FOR THE YEAR...........30.26 DEPARTURE.....-4.43 ASOS...............N/A *** *** ASOS annual total not available due to erroneous readings 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 88/68/78/+6/0.06/729/84 28 WNW RMY N/A 8/2 86/62/74/+2/0.00/865/100 24 SW RMY N/A 8/3 89/68/79/+7/0.00/690/80 31 S RMY N/A 8/4 86/66/76/+4/0.31/422/49 45 W RMY 50 TSTM 8/5 84/64/74/+2/0.00/765/89 28 WNW RMY 27 8/6 80/59/70/-2/0.00/685/80 22 W RMY 21 8/7 78/61/70/-2/0.00/845/99 20 ESE RMY 18 8/8 77/58/68/-4/0.00/741/87 18 E RMY N/A 8/9 72/59/66/-6/T/458/54 27 NNE RMY 26 8/10 84/58/71/0/0.00/830/98 28 S RMY N/A 8/11 70/63/67/-4/0.52/000/00 32 SSE RMY 35 8/12 83/65/74/+3/0.00/766/91 22 W RMY 20 8/13 83/62/73/+2/0.00/832/99 18 WNW RMY 18 8/14 86/63/75/+4/0.00/837/100 21 S RMY 23 8/15 91/66/79/+8/..../534/64 38 W RMY 41 TSTM 8/16 87/65/76/+5/..../774/93 16 W RMY N/A 8/17 90/70/80/+9/0.00/805/97 17 W RMY 18 8/18 92/70/91/+10/0.27/546/66 31 W RMY 32 TSTM 8/19 87/69/78/+8/0.00/775/94 23 S RMY 24 8/20 85/70/78/+8/0.00/723/88 22 ESE RMY 22 8/21 82/69/76/+6/0.31/98/12 21 S RMY 23 8/22 73/66/70/0/T/.../.. 18 ENE RMY 16 8/23 70/66/68/-2/0.18/000/00 20 ENE RMY 18 8/24 78/67/73/+3/..../.../.. 18 SSW RMY 19 8/25 85/68/77/+8/..../.../.. 22 S RMY 22 8/26 82/64/73/+4/..../.../.. 21 NW RMY 22 8/27 79/59/69/+0/0.00/.../.. 22 W RMY 23 8/28 80/58/69/+0/0.00/.../.. 15 NW RMY 15 8/29 low since midnight is 60F; normal low is now 60F DAILY RECORDS FOR AUGUST 2015 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 29 HIGH 95F IN 1953 LOW 41F IN 1982 PRECIP 2.88 INCHES IN 1962 PEAK GUST 70e MPH S IN 1949 RECORDS FOR AUGUST 30 HIGH 94F IN 1953 LOW 39F IN 1965 PRECIP 2.75 INCHES IN 1936 PEAK GUST 43 MPH NW IN 1965 TODAY'S REPORT PREPARED BY: Robert Skilling