BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, JUNE 24, 2015  ALL TIMES ARE IN EASTERN STANDARD TIME SEVERE STORMS SPARE GREAT BLUE HILL, STRIKE THROUGHOUT THE REGION Tornado warnings were issued both on the North Shore and south toward the Rhode Island border, while the summit of Great Blue Hill was largely spared. Gusty winds and a couple brief showers came throughout the day, while storms developed in other areas. Only 0.01 inches of new rain was reported at the station, bringing our annual precipitation deficit to 3.28 inches below normal.  Drier air worked in overnight after the passing cold front, bringing an overnight minimum of 62F. Northwesterly winds have brought much improved visibility as well, with visibility topping 70 miles this morning.  Today's Observations:   7 A.M. Weather: Clear, few cumulus distant WSW-N, few cirrostratus distant ESE-SSW Temperature: 69F; Dew Point: 58F; Wind: NW at 12G20 kts Sea-level pressure: 29.93 ins. Hg, increasing, then more slowly Visibility: 70 miles 6-hr Max temp: 69F 6-hr Min temp: 62F 24-hr precip: 0.01 inches BHO SA 1155 CLR 70 135/69/58/3112G20/993/ FEW CU DSNT WSW-N FEW CS DSNT ESE-SSW/ 8/108 51024 MANUAL 70001 10069 20062  10 A.M. Weather: Scattered cumulus Temperature: 75F; Dew Point: 58F; Wind: WNW at 11G18 kts Sea-level pressure: 29.95 ins. Hg, increasing, then more slowly Visibility: 70 miles BHO SA 1455 40 SCT 70 143/75/58/2911G18/995/ 8/100 51008 SUMMARY FOR TUESDAY, JUNE 23, 2015     TEMPERATURE (DEGREES F) MAX.....85   NORMAL.....77 MIN.....67   NORMAL.....59 MEAN....76   NORMAL.....68   DEPARTURE FROM 30-YEAR NORMAL........................+8  TOTAL DEPARTURE FOR THE MONTH.......................-19 [-1.0 DEGREES/DAY]   HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............0  DEPARTURE...........-1 TOTAL HEATING UNITS FOR THE MONTH..............87  DEPARTURE..........+20  TOTAL HEATING UNITS FOR THE SEASON...........6491  DEPARTURE.........+121 TOTAL HEATING UNITS LAST SEASON TO DATE......6422  DIFFERENCE.........+69   COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............11   DEPARTURE..........+7 TOTAL COOLING UNITS FOR THE MONTH..............71   DEPARTURE..........+3 TOTAL COOLING UNITS FOR THE SEASON............120   DEPARTURE.........+28 TOTAL COOLING UNITS LAST SEASON TO DATE........68   DIFFERENCE........+52   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................36 S    AT   9:38 A.M.                                      ASOS........................41 S    AT   9:38 A.M.                    DAVIS.......................37 S    AT   9:23 A.M. RMY 38 FASTEST MILE FOR YESTERDAY.....................28 SSW  AT  10:30 A.M.*          MAXIMUM 2-MINUTE ASOS AVERAGE..................26 SSW  AT  10:44 A.M.                 MAXIMUM 2-MINUTE DAVIS AVERAGE.................25 SSW  AT  10:44 A.M.           AVERAGE WIND SPEED AND DIRECTION.............14.5 SSW                    ASOS......................14.4                    DAVIS.....................13.1 SSW [207 deg.]  * Last of several occurrences...   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.01   DEPARTURE....-0.10                          ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........3.38   DEPARTURE....-0.12                           ASOS...............3.39 TOTAL PRECIPITATION FOR THE YEAR.......... 22.75   DEPARTURE....-3.28                          ASOS...............N/A *** *** ASOS annual totals not available due to erroneous readings   PRELIMINARY CLIMATE SUMMARY FOR JUNE 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  48/46/47/-15/0.69/000/00              32 NE  RMY 34 6/2  47/44/46/-16/..../000/00              28 NNE RMY 28 6/3  59/44/52/-10/0.00/172/19              16 ESE RMY 16 6/4  63/46/55/-8/0.00/445/49               17 E   RMY 16 6/5  70/49/60/-3/T/500/55                  17 NNE RMY 17 6/6  65/52/59/-4/0.06/382/42               26 ENE RMY 27 6/7  73/49/61/-3/0.00/884/97               28 S   RMY 29 6/8  73/50/62/-2/T/310/34                  41 SSW RMY 48 6/9  76/61/69/+4/0.03/228/25               29 SSW RMY 32   6/10 82/57/70/+5/0.00/840/92               24 WSW RMY N/A   6/11 85/61/73/+8/0.00/594/65               29 SSW RMY 32 6/12 86/65/76/+11/..../522/57              26 S   RMY 29  6/13 83/67/75/+10/T/586/64                 24 N   RMY 27 6/14 75/61/68/+2/0.00/641/70               21 SSE RMY 21 6/15 61/52/57/-9/..../000/00               25 SE  RMY 26 6/16 73/56/65/-1/..../009/01               18 NW  RMY N/A  6/17 70/57/64/-3/0.00/.../..               28 NE  RMY 28 6/18 76/54/65/-2/0.00/.../..               22 S   RMY 26 6/19 84/60/72/+5/T/.../..                  24 SSW RMY 22 6/20 75/56/66/-2/..../.../..               23 SSE RMY N/A 6/21 76/60/68/0/..../.../..                26 S   RMY 29 6/22 83/63/73/+5/0.00/.../..               20 WNW RMY 19 6/23 85/67/76/+8/0.01/.../..               36 S   RMY 38 6/24 low since midnight is 62F; normal low is now 60F   DAILY RECORDS FOR JUNE 2015 6/1- NEW RECORD LOW MAXIMUM TEMPERATURE OF 48F surpasses previous record of 51F in 2004   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):  RECORDS FOR JUNE 24 HIGH 91F IN 1914,1976,2013 LOW 40F IN 1932 PRECIP 2.80 INS IN 1929 PEAK GUST 54 MPH WNW IN 2010 RECORDS FOR JUNE 25 HIGH 93F IN 1943,1980, 2005 LOW 47F IN 1903 PRECIP 1.38 INS IN 2012 PEAK GUST 51 MPH W IN 1960 TODAY'S REPORT PREPARED BY: Brian Fitzgerald