BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, JULY 3, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME HEAT AND HUMIDITY CONTINUE, TODAY WE REACHED 90 DEGREES FOR THE FIRST TIME THIS YEAR Following our hottest temperature so far this year of 89F yesterday, the morning low was a very warm and very humid 72F. A brief shower left only a trace of rainfall last evening. THE PRELIMINARY JUNE 2014 STATS [Departures are relative to the 1981-2010 averages] TEMPERATURE: Deg. F Avg. Max. 77.2 [+2.2] Avg. Min. 56.8 [-0.3] Mean 67.0 [+0.9] (CORRECTED) 24-hr. corrected mean: 66.8 Max. temp: 87F on the 30th Min. temp: 47F on the 1 st Total heating degree day units: 28 [-46] Total seasonal heating units: 6422 [46 more than average] [Season starts 7/1] Total cooling degree day units: 96 [-9] Total cooling degree units for season: 109 [-20] [Season starts January 1, 2014] PRECIPITATION: Inches Total: 2.21 [-2.10] Greatest in 24 hours: 0.91 (5TH) WIND Av. speed (uncorrected): 10.1 mph Av. speed (corrected): 10.6 mph Prevailing direction: SSW 12% SUNSHINE Total astronomical minutes: 17552 of possible 26376 or 67% Total Campbell Stokes card minutes; 17552 of possible 26376 or 67% Today's Observations: 7 A.M. Weather: Scattered cirrus, thin broken cirrus, few stratus and stratocumulus, few altocumulus of chaotic sky dissipating, few dense cirrus Temperature: 77F; Dew Point: 71F; Wind: SW at 5 kts, Wind: Light Sea-level pressure: 29.97 ins. Hg, rising then rising more slowly Visibility: 15 miles, hazy 6-hr max temp: 77F 6-hr min temp: 72F BHO SA 1155 200 SCT 220 SCT 250 –BKN 15 148X/77/71/2205/997/ FEW STRA/SC FEW AC CHAOTIC SKY DSSPTNG PST HR PTCHS DNS CI HAZY/ 8/692 50003 10077 20072 10 A.M. Weather: Overcast altocumulus, few floccus in vicinity to the SW, small breaks in overcast ESE-SSE Temperature: 81F; Dew Point: 72F; Wind: SSE at 6 kts, Sea-level pressure: 29.98 ins. Hg, rising then rising more slowly Visibility: 15 miles, WNW 20 miles, hazy BHO SA 1455 E140 15 151/81/72/1606/998/ SML BINOVC ESE-SSE VSBY WNW 20 HAZY ALQDS/ 9/07/ 53006 1 P.M. Weather: Scattered cumulus, few moderate, thin scattered cirrus, lower cirrus W-NW Temperature: 89F; Dew Point: 71F; Wind: SSW at 10 kts, Sea-level pressure: 29.96 ins. Hg, falling slightly Visibility: 25 miles, hazy 6-hr max temp: 90F 6-hr min temp: 77F BHO SA 1755 32 SCT 220 SCT 250 –SCT 25 146/89/71/2110/996/ FEW MDT CU ALQDS LWR CI DSNT W-NW/ 8/201 58005 10090 20077 WEATHER SUMMARY FOR WEDNESDAY, JULY 2, 2014 TEMPERATURE (DEGREES F) MAX.....89 NORMAL.....79 MIN.....69 NORMAL.....62 MEAN....79 NORMAL.....70 DEPARTURE FROM 30-YEAR NORMAL.........................+9 TOTAL DEPARTURE FOR THE MONTH........................+16 [+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.............14 DEPARTURE..........+8 TOTAL COOLING UNITS FOR THE MONTH.............25 DEPARTURE.........+13 TOTAL COOLING UNITS FOR THE SEASON...........134 DEPARTURE..........-7 TOTAL COOLING UNITS LAST SEASON TO DATE......174 DIFFERENCE........-40 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................33 S AT 3:35 P.M. ASOS.......................39 SSW AT 2:58 P.M. DAVIS......................38 S AT 3:35 P.M. RMY 38 FASTEST MILE FOR YESTERDAY....................28 S AT 3:36 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................29 SSW AT 3:37 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................27 SSW AT 3:37 P.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....trace DEPARTURE..........-0.11 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.00 DEPARTURE..........-0.22 ASOS..............0.00 TOTAL PRECIPITATION FOR THE YEAR..........24.55 DEPARTURE..........-2.64 ASOS.............24.86 PRELIMINARY CLIMATE SUMMARY FOR JUNE 2014 - JULY 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 80/57/69/0/0.29/495/54 26 NE RMY 27 6/27 74/56/65/-4/0.00/889/97 25 NNE RMY 24 6/28 83/60/72/+2/0.00/889/97 17 WSW RMY 18 6/29 85/60/73/+3/0.00/860/94 23 S RMY N/A 6/30 87/61/74/+4/0.00/868/95 25 SSW RMY 26 7/1 85/66/76/+6/0.00/.../.. 31 SSW RMY 36 7/2 89/69/79/+9/0.00/.../.. 33 SSW RMY 38 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JULY 3 HIGH 99F IN 1911 LOW 47F IN 1914 PRECIP 1.36 IN 1985 PEAK GUST 52 MPH NW IN 1963 RECORDS FOR JULY 4 HIGH 98F IN 1911, 1919, 1949 LOW 48F IN 1914 PRECIP 1.78 IN 1950 PEAK GUST 50e MPH WNW IN 1949 TODAY'S REPORT PREPARED BY: Robert Skilling