BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JUNE 9, 2015 ALL TIMES ARE IN EASTERN STANDARD TIME HUMID CONDITIONS CONTINUE, JUST A TRACE OF RAIN SO FAR, WINDS GUST OVER 40 MPH ON MONDAY Yesterday, strong southerly winds gusted to an official maximum of 41 MPH from the SSW at exactly 3:00 PM EST. Some instruments, including the RM Young, gusted to a station high of 48 MPH. The calendar day average wind speed for Monday was 21.0 MPH predominately from the SSW. Mostly cloudy and humid conditions continued overnight, with a low reading this morning of 63F. Spotty showers began just before the 10:00 AM EST observation, with additional showers popping up throughout the region by this time. By the 1:00 PM EST observation light rain had begun once again, leaving just a trace at observation time. During a quick break in the clouds, a maximum of 76F had been recorded early in the day. Today's Observations: 7 A.M. Weather: Light fog, overcast stratus Temperature: 64F; Dew Point: 62F; Wind: SSW at 13 kts Sea-level pressure: 29.75 ins. Hg, falling steadily Visibility: 6 miles, obscured by light fog 6-hr Max temp: 64F 6-hr Min temp: 63F 24-hr precip: Trace BHO SA 1155 E5 OVC 6F 075/64/62/2013/975/ 8/6// 57002 MANUAL 6000/ 10064 20063 10 A.M. Weather: Light rain showers, beginning at 9:48 AM EST, scattered stratocumulus, broken alto/nimbostratus Temperature: 70F; Dew Point: 64F; Wind: S at 13G19 kts Sea-level pressure: 29.72 ins. Hg, falling, then more quickly Visibility: 10 miles, obscured by light rain showers, thin fog 3-hr precip: Trace BHO SA 1455 20 SCT E90 BKN 10RW- 063/70/64/1913G19/972/ RW-B48 THN FG ALQDS PRCP VRY LGT/ 8/520 58012 MANUAL 6000/ 1 P.M. Weather: Light rain, begining at 12:28 PM EST, broken stratocumulus, overcast alto/nimbostratus Temperature: 69F; Dew Point: 65F; Wind: S at 13G31 kts Sea-level pressure 29.69 ins. Hg, falling then more quickly Visibility: 10 miles, thin fog, hazy, light rain 6-hr Max temp: 76F 6-hr Min temp: 64F 6-hr precip: Trace BHO SA 1755 E30 BKN 100 OVC 10R- 054/69/65/1813G31/969/ R-B28 PRCP VRY LGT THN FG ALQDS HAZY/ 8/52/ 56009 MANUAL 6000/ 10076 20064 SUMMARY FOR MONDAY, JUNE 8, 2015 TEMPERATURE (DEGREES F) MAX.....73 NORMAL.....73 MIN.....50 NORMAL.....55 MEAN....62 NORMAL.....64 DEPARTURE FROM 30-YEAR NORMAL........................-2 TOTAL DEPARTURE FOR THE MONTH.......................-61 [-7.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............3 DEPARTURE...........-1 TOTAL HEATING UNITS FOR THE MONTH..............78 DEPARTURE..........+45 TOTAL HEATING UNITS FOR THE SEASON...........6482 DEPARTURE.........+146 TOTAL HEATING UNITS LAST SEASON TO DATE......6414 DIFFERENCE.........+68 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............0 DEPARTURE..........-2 TOTAL COOLING UNITS FOR THE MONTH..............0 DEPARTURE.........-16 TOTAL COOLING UNITS FOR THE SEASON............49 DEPARTURE..........+9 TOTAL COOLING UNITS LAST SEASON TO DATE.......32 DIFFERENCE........+17 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................41 SSW AT 3:00 P.M. ASOS.......................46 SSW AT 2:27 P.M. DAVIS......................47 SSW AT 2:27 P.M. RMY 48 FASTEST MILE FOR YESTERDAY....................35 SSW AT 3:07 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................35 S AT 4:29 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................34 SSW AT 3:21 P.M. AVERAGE WIND SPEED AND DIRECTION..............21.0 SSW ASOS.......................20.6 DAVIS......................18.8 S [194 deg.] * Last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....TRACE DEPARTURE....-0.17 ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........1.55 DEPARTURE....+0.22 ASOS...............1.57 TOTAL PRECIPITATION FOR THE YEAR.......... 20.86 DEPARTURE....-2.94 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/SNOWFALL/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/-15/0.69/0.0/000/00 32 NE RMY 34 6/2 47/44/46/-16/..../0.0/000/00 28 NNE RMY 28 6/3 59/44/52/-10/0.00/0.0/.../.. 16 ESE RMY 16 6/4 63/46/55/-8/0.00/0.0/.../.. 17 E RMY 16 6/5 70/49/60/-3/T/0.0/.../.. 17 NNE RMY 17 6/6 65/52/59/-4/0.06/0.0/.../.. 26 ENE RMY 27 6/7 73/49/61/-3/0.00/0.0/.../.. 28 S RMY 29 6/8 73/50/62/-2/T/0.0/.../.. 41 SSW RMY 48 6/9 low since midnight is 63F; normal low is now 55F 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 9 HIGH 94F IN 2008 LOW 40F IN 1980 PRECIP 2.08 INCHES IN 1931 PEAK GUST 67 MPH NW IN 1973 RECORDS FOR JUNE 10 HIGH 98F IN 2008 LOW 42F IN 1913,1920 PRECIP 2.51 INCHES IN 1931 PEAK GUST 60e MPH NW IN 1941 TODAY'S REPORT PREPARED BY: Brian Fitzgerald