BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, JUNE 28, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME HIGH PRESSURE BRINGS ANOTHER NICE DAY High pressure is in control today, providing us with another nice summer day. This morning dawned mostly sunny and seasonable, with a morning low temperature of 60F. We are running a few degrees above average this afternoon, with the temperature in the low 80s. A sea breeze that has been present for much of the day has prevented it from becoming any warmer. In addition, dew points remain low, so the air has been feeling very comfortable. Some clouds have developed during the day, with cirrus gradually overspreading more of the sky and cumulus clouds bubbling up as well, though most of those have been small. Despite 0.29 inches of rain on Thursday, we remain in a long term dry spell, and are likely to finish greater than two inches below normal for precipitation this month. Today's Observations: 7 A.M. Weather: Clear, few cirrus distant SW-NW, thin smoke layer along horizon N-NE Temperature: 66F; Dew Point: 59F; Wind: NNW at 4 kts, Wind: Light Sea-level pressure: 30.27 ins. Hg, rising then rising more slowly Visibility: 45 miles, distant haze 6-hr max temp: 66F 6-hr min temp: 60F BHO SA 1155 CLR 45 252/66/59/E3404/027/ FEW CI DSNT SW-NW THN K LYR ALG HRZN N-NE DSNT HZ WND LGT/ 8/001 51012 10066 20060 10 A.M. Weather: Scattered cirrus, few cumulus fractus SE-S, few cumulus distant SW-WNW Temperature: 78F; Dew Point: 54F; Wind: ENE at 5 kts, Wind: Light and variable Sea-level pressure: 30.29 ins. Hg, rising then steady Visibility: 45 miles, distant haze BHO SA 1455 250 SCT 45 256/78/54/E0605/029/ FEW CUFRA SE-S FEW CU DSNT SW-WNW DSNT HZ WND LGT AND VRB/ 8/101 51004 1 P.M. Weather: Broken cirrus, few cumulus distant SE-NNW Temperature: 82F; Dew Point: 45F; Wind: ENE at 5 kts, Sea-level pressure: 30.28 Hg, falling slightly Visibility: 50 miles, distant haze 6-hr max temp: 83F 6-hr min temp: 60F BHO SA 1755 E250 BKN 50 254/82/45/E0705/028/ FEW CU SE-NNW DSNT HZ WND LGT AND VRB/ 8/101 58002 10083 20060 WEATHER SUMMARY FOR FRIDAY, JUNE 27, 2014 TEMPERATURE (DEGREES F) MAX.....74 NORMAL.....78 MIN.....56 NORMAL.....60 MEAN....65 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL.........................-4 TOTAL DEPARTURE FOR THE MONTH........................+26 [+0.8 DEGREE/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............0 DEPARTURE..........-1 TOTAL HEATING UNITS FOR THE MONTH..............28 DEPARTURE.........-43 TOTAL HEATING UNITS FOR THE SEASON...........6422 DEPARTURE.........+48 TOTAL HEATING UNITS LAST SEASON TO DATE......5782 DIFFERENCE.... ..+640 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............0 DEPARTURE..........-5 TOTAL COOLING UNITS FOR THE MONTH.............72 DEPARTURE.........-16 TOTAL COOLING UNITS FOR THE SEASON............85 DEPARTURE.........-27 TOTAL COOLING UNITS LAST SEASON TO DATE......131 DIFFERENCE........-46 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................25 NNE AT 8:36 A.M. ASOS.......................26 ENE AT 8:36 A.M. DAVIS......................23 NNE AT 8:36 A.M. RMY 24 FASTEST MILE FOR YESTERDAY....................17 NNE AT 8:31 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................18 NE AT 8:32 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................18 NNE AT 8:31 A.M. AVERAGE WIND SPEED AND DIRECTION.............8.5 ENE ASOS......................9.0 DAVIS.....................7.7 NE [46 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE..........-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.21 DEPARTURE..........-1.77 ASOS..............2.16 TOTAL PRECIPITATION FOR THE YEAR..........24.55 DEPARTURE..........-2.09 ASOS.............24.86 PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 6/1 72/47/60/-2/0.00/887/98 21 NNW RMY 21 6/2 81/52/67/+5//0.00/879/97 22 SSW RMY 23 6/3 81/57/69/+7/0.00/889/98 25 SSE RMY 28 6/4 64/52/58/-5/0.11/000/00 16 SE RMY N/A 6/5 60/55/58/-5/0.91/000/00 21 NNW RMY 24 6/6 73/54/64/+1/0.00/655/72 22 WNW RMY 23 6/7 82/56/69/+5/0.00/893/98 21 W RMY 22 6/8 84/63/74/+10/0.00/702/77 18 SW RMY N/A 6/9 77/61/69/+5/0.13/046/05 21 WSW RMY 22 6/10 80/56/68/+3/0.10/183/20 29 ENE RMY 33 6/11 69/55/62/-3/T/439/48 21 ENE RMY 20 6/12 70/56/63/-2/0.00/101/11 21 ESE RMY N/A 6/13 67/58/63/-2/0.34/000/00 25 E RMY N/A 6/14 73/58/66/0/0.05/238/26 23 WNW RMY 24 6/15 78/53/66/0/0.00/879/96 25 NNW RMY 27 6/16 79/56/68/+2/0.00/834/91 23 S RMY N/A 6/17 81/58/70/+3/0.28/752/82 25 S RMY 24 TSTM 6/18 83/65/74/+7/T/715/78 35 W RMY 38 6/19 81/61/71/+4/0.00/559/61 24 NW RMY 25 6/20 75/55/65/-3/0.00/889/97 24 NW RMY 27 6/21 75/52/64/-4/0.00/770/84 17 NNW RMY 19 6/22 75/54/65/-3/0.00/734/80 17 N RMY 19 6/23 80/57/69/+1/0.00/862/94 22 SSW RMY 24 6/24 81/57/69/0/0.00/688/75 29 S RMY 33 6/25 86/62/74/+5/0.00/761/83 28 SSW RMY 31 6/26 80/57/69/0/0.29/.../.. 26 NE RMY 27 6/27 74/56/65/-4/0.00/.../.. 25 NNE RMY 24 6/28 morning low temp: 60F; the normal low is now 61F DAILY RECORDS FOR JUNE 2014 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 28 HIGH 95F IN 1991 LOW 47F IN 1970 PRECIP 2.09 INS IN 1938 PEAK GUST 52 MPH WSW IN 1993 RECORDS FOR JUNE 29 HIGH 93F IN 1933 LOW 42F IN 1919 PRECIP 1.60 INS IN 1889 PEAK GUST 49 MPH S IN 1957 TODAY'S REPORT PREPARED BY: Jonathan O'Brien