BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, JULY 1, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME JUNE ENDS AS 4TH WETTEST JUNE ON RECORD A little more rain late on June 30th added to the already 4th wettest June. A brief light shower brought 0.01 during the early morning of July 1. Fog and very humid conditions were occurring with dew points rising to 71 to 74 degrees by early afternoon as high temperatures again reached the lower 80's. The total precipitation for the month of June was 12.11 inches, so the month wound up as the 4th wettest June on record. Blue Hill Wettest Junes, inches (1886-2013) 1) 17.32 in 1998 2) 13.73 in 1982 3) 12.31 in 2006 4) 12.11 in 2013 5) 10.78 in 1922 JUNE 2013 PRELIMINARY STATS TEMPERATURES (DEG F): AV. MAX 76.6 AV. MIN 58.0 MEAN 67.3 [+1.2} High 91 on 24th Low 48 on 4th Total heating units: 48 [-25] Total cooling units: 124 [+19] PRECIPITATION (ins.) Total for month: 12.11 [+7.80] Greatest one day: 3.28 on 7th WIND Average: 11.5 MPH Average (corrected) 11.9 MPH Peak gust: 45 mph NW on 17th Fast mile: 40 mph NW on 17th SUNSHINE DATA Available later More June stats as they become available Today's Observations: 7 A.M. Weather: Partial obscurement, scattered stratus, overcast with altocumulus, stratus drifting over and below summit, conditions variable, fog obscuring 3/10 of sky, small break in overcast overhead Temperature: 71F; Dew Point: 71F; Wind: S at 6 kts Sea-level pressure: 30.01 ins. Hg, rising Visibility: 1/2 mile, variable 1/8 to 1 1/2 miles, fog 6-hour min. temp: 69F 6-hour precip: 0.01 24-hour precip: 0.18 in. BHO SA 1155 –X 3 SCT E150 OVC 1/2VF 164/71/71/1806/001/ F3 CDNS VRBL STRA DRTG OVR/BLO SMT SML BINOVC OVHD VSBY 1/8V11/2/ 8/67/ 51011 MANUAL 6001/ ASOS 60001 MANUAL 70018 ASOS 70017 10071 20069 10 A.M. Weather: Overcast stratus, brightening in overcast, thin fog Temperature: 73F; Dew Point: 72F; Wind: S at 8 kts Sea-level pressure: 30.03 ins. Hg, rising then rising more slowly Visibility: 8 miles, N-NE 12 miles, SE-SW 6 miles, thin fog 3-hourly precip: trace BHO SA 1455 E5 8 171/75/72/1808/003/ BRGHT SPTS IOVC VSBY N-NE 12 VSBY SE-SW 6 THN F ALQDS/ 8/6// 51007 MANUAL 6000/ 1 P.M. Weather: Scattered towering cumulus (NW-NNE), scattered moderate cumulus, broken stratocumulus, broken altocumulus, small cumulonimbus NW, showers of rain moving WNW-NNW moving NE Temperature: 82F; Dew Point: 73; Wind: S at 11 kts, Wind: Direction variable SSE-SSW Sea-level pressure: 30.02 ins. Hg, falling slightly Visibility: 20 miles, hazy 6-hour max. temp: 82F 6-hour precip: trace BHO SA 1755 25 SCT E35 BKN 100 BKN 150 BKN 20 165/81/73/1811/002/ SML CB NW TCU VC NW-NNE FEW ACSL ALQDS SHRA DSNT WNW-NNW MOVG NE WND 15V21 HAZY ALQDS/ 8/340 58006 MANUAL 6000/ 10082 20071 WEATHER SUMMARY FOR SUNDAY, JUNE 30, 2013 TEMPERATURE (DEGREES F) MAX.....83 NORMAL.....79 MIN.....68 NORMAL.....61 MEAN....76 NORMAL.....70 DEPARTURE FROM 30-YEAR NORMAL....................+64 TOTAL DEPARTURE FOR THE MONTH....................+42 [+1.2 DEGREE/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..............0 DEPARTURE..........-1 TOTAL HEATING UNITS FOR THE MONTH.............48 DEPARTURE........-305 TOTAL HEATING UNITS FOR THE SEASON..........5782 DEPARTURE........-595 TOTAL HEATING UNITS LAST SEASON TO DATE.....4984 DIFFERENCE........+798 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...............23 S AT 3:45 P.M. * AERO....................24 S AT 3:42 P.M. ASOS....................25 SSW AT 2:09 P.M. DAVIS...................N/A RMY 29 FASTEST MILE FOR YESTERDAY.................17 SSW AT 5:22 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE........... ..18 SSW AT 5:24 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.............N/A AVERAGE WIND SPEED AND DIRECTION..........11.5 S ASOS...................11.0 DAVIS...................N/A * last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION FOR 6/30 THRU 12M.. ...0.17 ASOS.FOR 6/30 THRU 12M .....0.16 TOTAL PRECIPITATION FOR THE JUNE..........12.11 DEPARTURE............+7.80 ASOS.............12.16 TOTAL PRECIPITATION FOR THE YEAR..........32.20 DEPARTURE............+5.23 ASOS..............N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals PRELIMINARY CLIMATE SUMMARY FOR JUNE-JULY 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY: RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 6/1 90/69/80/+18/0.00/905/100 30 SW AERO 32 MPH SW RMY 33 6/2 86/64/75/+13/T/761/84 42 SSW AERO 44 MPH SSW RMY 46 6/3 75/57/66/+4/0.47/154/17 22 WNW AERO 22 MPH SSW RMY 22 6/4 70/48/59/-4/0.00/899/99 25 W AERO 25 MPH W RMY 25 6/5 73/51/62/-1/0.00/727/80 20 SSW AERO 21 MPH S RMY 22 6/6 74/54/64/+1/0.03/455/50 22 SSE AERO 22 MPH S RMY 22 6/7 57/51/54/-10/3.28/000/00 33 NE AERO 32 MPH NE RMY 34 6/8 77/52/65/+1/0.78/356/39 29 W AERO 29 MPH W RMY 29 TSTM 6/9 78/57/68/+4/0.00/886/97 25 W AERO 23 MPH W RMY 25 6/10 69/55/62/-3/0.76/119/13 24 E AERO 24 MPH E RMY N/A 6/11 65/53/59/-6/1.61/000/00 29 E AERO 29 MPH E RMY N/A 6/12 69/54/62/-3/0.01/320/35 38 NW AERO 41 MPH NW RMY 41 6/13 65/50/58/-7/0.93/110/12 32 NE AERO 33 MPH NE RMY 34 6/14 70/61/61/-5/1.38/421/46 32 NE AERO 32 MPH NE RMY 29 6/15 77/56/67/+1/0.00/907/99 23 NW AERO 24 MPH NW RMY 26 6/16 74/57/66/0/0.00/266/29 25 S AERO 24 MPH S RMY 27 6/17 84/60/72/+5/1.27/734/80 45 NW AERO 51 MPH NW RMY 48 TSTM 6/18 74/56/65/-2/0.61/440/48 32 ENE AERO 32 MPH ENE RMY 33 TSTM 6/19 71/53/62/-5/T/761/83 20 NNE AERO 20 MPH NNE RMY N/A 6/20 78/53/66/-2/0.00/889/97 18 SSW AERO 20 MPH SSW RMY N/A 6/21 82/57/70/+2/0.00/724/79 22 SW AERO 22 MPH SW RMY 23 6/22 82/62/72/+4/0.00/743/81 23 SW AERO 24 MPH SW RMY 25 6/23 87/63/75/+7/T/834/91 29 SW AERO 31 MPH SW RMY 32 6/24 91/68/80/+11/0.06/.../.. 28 W AERO 30 MPH W RMY 30 TSTM 6/25 90/69/78/+9/T/.../.. 32 W AERO 33 MPH W RMY 39 6/26 83/65/74/+5/0.02/.../.. 20 NNE AERO 20 MPH NNE RMY 20 6/27 66/61/64/-5/T/000/00 20 ENE AERO 17 MPH ENE RMY 20 6/28 78/61/70/0/0.59/.../.. 32 S AERO 36 MPH S RMY 36 6/29 80/68/74/+4/T/0.14/.../.. 30 S AERO 32 MPH S RMY N/A 6/30 83/68/76/+6/0.17/.../.. 23 S AERO 24 MPH S RMY 29 7/1 morning low temp: 69F; the normal low is now 61F morning precip. thru 7 A.M. 0.01 in. DAILY RECORDS FOR JUNE 2013 6/1 - TIED DAILY RECORD MAXIMUM TEMPERATURE OF 90F; previous record of 90F set in 1937 6/1 - NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 69F; surpasses previous record of 68F set in 1944, 1987 6/24 - TIED DAILY RECORD MAXIMUM TEMPERATURE OF 91F; previous record of 91F set in 1914, 1976 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JULY 1 HIGH 98F IN 1964 LOW 44F IN 1988 [RECORD FOR MONTH] PRECIP 4.46 INS IN 1915 [RECORD FOR MONTH] PEAK GUST 52 MPH WNW IN 1974 RECORDS FOR JULY 2 HIGH 95F IN 1963 LOW 47F IN 1988 PRECIP 1.42 INS IN 1986 PEAK GUST 45 MPH SW IN 1999 TODAY'S REPORT PREPARED BY: Robert Skilling/Mark Medlinskas/Marc Douglas