BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, JUNE 6, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME SUNSHINE AND WARM, DRY WEATHER AFTER RAINY DAY We were drying out today after 0.88 inches of welcome rainfall yesterday. Sunhine and W-NW winds have produced temperatures rising from a low of 54F to the low 70's this afternoon. THE PRELIMINARY MAY 2014 STATS [Departures are relative to the 1981-2010 averages] TEMPERATURE: Deg. F Avg. Max. 67.7 [+1.4] Avg. Min. 48.3 [+0.5] Mean 58.0 [+0.9] 24-hr. corrected mean: 57.3 Max. temp: 85F on the 12th Min. temp: 39F on the 29th Total heating degree day units: 223 [-45] Total seasonal heating units: 6394 [91 more than average] [Season starts 7/1] Seasonal total this date 2013: 5734 [660 more than last season] Total cooling degree day units: 13 [-9] Total seasonal cooling units: 13 [-11 less than average] [Season starts 5/1] Seasonal total this date 2013: 31 [-18 less than last season] PRECIPITATION: Inches Total: 3.22 [-0.89] Greatest in 24 hours: 1.30 (16-17th) Total snowfall: 0 [+/-0.0] Greatest in 24 hours: 0 WIND Av. speed (uncorrected): 10.9 mph Av. speed (corrected): 11.4 mph Prevailing direction: S 12% SUNSHINE Total astronomical minutes: 12,688 of possible 27,136 or 47% Total Campbell Stokes card minutes; 12,276 of possible 26,226 or 47% Today's Observations: 7 A.M. Weather: Scattered altocumulus, few altocumulus castellanus Temperature: 59F; Dew Point: 57F; Wind: WNW at 9 kts Sea-level pressure: 29.78 ins. Hg, rising, then more rapidly Visibility: 30 miles, except NE-E 20 miles, thin fog 6-hr max temp: 59F 6-hr min temp: 54F 24-hr precip: 0.88 inches BHO SA 1155 70 SCT 30 083/59/57/3009/978/ FEW STFRA DSSPTNG FEW CUFRA FRMG DSNT WSW-WNW FEW ACC VSBY NE-E 20 THN F/ 8/680 53017 ASOS 70087 MANUAL 70088 10059 20054 10 A.M. Weather: Scattered cumulus, moderate cumulus, scattered stratocumulus lenticularis, scattered altocumulus lenticularis Temperature: 67F; Dew Point: 55F; Wind: NNW at 9 kts Sea-level pressure: 29.79 ins. Hg, rising slightly Visibility: 30 miles, except 40 miles NE BHO SA 1455 25 SCT 45 SCT 70 SCT 30 088/67/55/3309/979/ SCSL/ACSL ALQDS WND 30V36/ 8/840 51005 1 P.M. Weather: Broken stratocumulus, few lower moderate cumulus, patches stratocumulus cumulogenitus and altocumulus cumulogenitus, light distant haze Temperature: 69F; Dew Point: 52F; Wind: wnw at 12 kts Sea-level pressure: 29.79 ins. Hg, falling slightly Visibility: 35 miles 6-hr max temp: 73F 6-hr min temp: 59F BHO SA 1755 E45 BKN 35 087/69/52/2912/979/ FEW LWR MDT CU PTCHS SCCG AND ACCG VSBY WNW 45 LGT DSNT HZ/ 8/460 58001 10073 20059 WEATHER SUMMARY FOR THURSDAY, JUNE 5, 2014 TEMPERATURE (DEGREES F) MAX.....60 NORMAL.....72 MIN.....55 NORMAL.....54 MEAN....58 NORMAL.....63 DEPARTURE FROM 30-YEAR NORMAL..........................-5 TOTAL DEPARTURE FOR THE MONTH.......................... 0 [+0.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............7 DEPARTURE..........+3 TOTAL HEATING UNITS FOR THE MONTH..............19 DEPARTURE..........-3 TOTAL HEATING UNITS FOR THE SEASON...........6413 DEPARTURE.........+88 TOTAL HEATING UNITS LAST SEASON TO DATE......5743 DIFFERENCE.......+670 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............0 DEPARTURE..........-2 TOTAL COOLING UNITS FOR THE MONTH..............6 DEPARTURE..........-3 TOTAL COOLING UNITS FOR THE SEASON............19 DEPARTURE.........-14 TOTAL COOLING UNITS LAST SEASON TO DATE.......57 DIFFERENCE........-38 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................21 NNE AT 12:22 P.M. ASOS.......................24 NNE AT 12:22 P.M. DAVIS......................23 NNE AT 12:21 P.M. RMY 24 FASTEST MILE FOR YESTERDAY....................16 NE AT 1:04 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................16 N AT 2:35 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................16 NE AT 1:04 P.M. AVERAGE WIND SPEED AND DIRECTION..............7.8 N ASOS.......................7.8 DAVIS......................6.7 NNE [020 deg] * Last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.88 DEPARTURE.............+0.71 ASOS..............0.87 TOTAL PRECIPITATION FOR THE MONTH..........1.02 DEPARTURE.............+0.19 ASOS..............1.00 TOTAL PRECIPITATION FOR THE YEAR..........23.36 DEPARTURE.............-0.13 ASOS.............23.71 PRELIMINARY CLIMATE SUMMARY FOR MAY 2014- JUNE 2014 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 5/1 64/43/54/+1/0.49/0.0/093/11 32 SSE RMY 36 5/2 68/51/60/+7/T/0.0/457/54 28 W RMY 29 5/3 66/48/57/+4/0.00/0.0/332/39 21 SW RMY N/A 5/4 60/47/54/0/0.01/0.0/400/47 51 WNW RMY 54 5/5 64/46/55/+1/T/0.0/592/70 30 NW RMY 32 5/6 63/42/53/-1/T/0.0/506/59 30 NW RMY 30 5/7 64/42/55/0/0.00/0.0/850/99 21 WNW RMY 23 5/8 69/48/59/+4/0.00/0.0/612/71 17 SSW RMY 19 5/9 57/51/54/-1/0.05/0.0/000/00 21 S RMY N/A 5/10 78/57/68/+13/0.10/0.0/043/05 33 S RMY 37 TSTM 5/11 79/58/69/+13/0.01/0.0/746/86 30 W RMY N/A 5/12 85/49/67/+11/0.00/0.0/792/91 39 NE RMY 42 5/13 54/42/48/-8/0.00/0.0/113/13 32 NE RMY N/A 5/14 73/42/58/+1/T/ 0.0/613/70 22 S RMY 24 5/15 77/57/67/+10/T/0.0/140/16 27 S RMY 33 5/16 73/60/67/+10/0.26/0.0/026/03 36 S RMY 41 5/17 74/52/63/+6/1.04/0.0/555/63 36 SSE RMY N/A 5/18 67/47/57/-1/0.00/0.0/521/59 20 NW RMY N/A 5/19 65/48/56/-2/0.12/0.0/443/50 35 NNW RMY 38 5/20 71/48/60/+2/T/0.0/771/89 25 NNW RMY 26 5/21 71/51/61/+2/0.00/0.0/844/95 18 ESE RMY 20 5/22 67/51/59/0/0.26/0.0/116/13 15 SSE RMY 18 5/23 60/49/55/-4/0.05/0.0/000/00 16 NE RMY 18 5/24 65/49/57/-2/0.02/0.0/277/31 17 ENE RMY 18 5/25 71/49/60/0/0.00/0.0/430/48 20 S RMY N/A 5/26 76/52/64/+4/0.05/0.0/108/12 30 W RMY 34 5/27 74/47/61/+1/0.37/0.0/242/27 25 NE RMY 31 TSTM 5/28 48/40/44/-17/0.30/0.0/000/00 32 NE RMY 35 5/29 61/39/50/-11/0.00/0.0/847/94 17 NNE RMY 18 5/30 71/45/58/-3/0.09/0.0/550/61 20 S RMY 22 TSTM 5/31 60/49/55/-6/0.00/0.0/669/74 22 NE RMY 25 6/1 72/47/60/-2/0.00/.../.. 21 NNW RMY 21 6/2 81/52/67/+5//0.0/.../.. 22 SSW RMY 23 6/3 81/57/69/+7/..../.../.../.. 25 SSE RMY 28 6/4 64/52/58/-5/..../.../.../.. 16 SE RMY N/A 6/5 60/55/58/-5/..../000/00 21 NNW RMY 24 6/6 morning low temp: 54F; the normal low is now 54F 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 6 HIGH 95F IN 1925 LOW 42F IN 1885, 1894, 1920, 1945 PRECIP 3.61 INS IN 2000 PEAK GUST 58 MPH NE IN 2000 RECORDS FOR JUNE 7 HIGH 93F IN 1999 LOW 40F IN 1932 PRECIP 4.01 INS IN 2006 PEAK GUST 58 MPH NE IN 1982 TODAY'S REPORT PREPARED BY: Robert Skilling