BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, JUNE 14, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME 2.31 INCHES OF RAIN WITH LATEST STORM; TEMPERATURES STILL ON THE COOL SIDE The month of June just keeps getting wetter. The storm system that slid to our south overnight dumped 2.31 inches of rain on the summit from yesterday morning through this morning. Rainfall for the month of June has now reached 9.25 inches, pushing June 2013 into 5th place for wettest Junes on record (see rankings below). A north to east wind continues to keep temperatures on the cool side. The temperature dipped to a chilly 50F yesterday evening. Today's average temperature will likely finish several degrees below the 30-year normal, pushing the departure for the month very close to zero. BHO Wettest Junes, inches (1886-2013) 1) 17.32 in 1998 2) 13.73 in 1982 3) 12.31 in 2006 4) 10.78 in 1922 5) 9.25 in 2013 (thru 5 P.M. EDT 6/14) 6) 9.03 in 1938 7) 8.77 in 1931 8) 8.64 in 1920 9) 8.02 in 1959 10) 7.45 in 2000 Today's Observations: 7 A.M. Weather: Moderate rain, broken stratocumulus, broken stratus, overcast nimbostratus, few stratus fractus drifting below summit all quadrants, ceiling ragged, thin fog all quadrants, moderate rain continued Temperature: 51F; Dew Point: 51F; Wind: NNE at 12G19 kts, Wind: Direction variable N-ENE Sea-level pressure: 29.70 ins. Hg, rising Visibility: 10 miles, moderate rain, thin fog all quadrants 6-hr precip: 1.03 inches 24-hr precip: 2.19 inches 6-hr min. temp: 51F BHO SA 1155 E4 BKN 10 BKN 65 OVC 10R 057/51/51/0312G19/970/ FEW STFRA DRFTNG BLO SMT ALQDS CLG RGGD THN FG ALQDS WND 35V07 R CTD/ 8/72/ 52024 ASOS 70219 MANUAL 70219 ASOS 60103 MANUAL 60103 10052 20051 10 A.M. Weather: Scattered cumulus, scattered altocumulus, broken altocumulus (2 levels), cumulus/cumulus fractus all quadrants, few moderate cumulus S-W, lower altocumulus lenticularis WSW-NNE, distant haze, very light and intermittent rain ended at 9:35 A.M. EST Temperature: 56F; Dew Point: 50F; Wind: NNE at 12G19 kts, Wind: Direction variable NNW-ENE Sea-level pressure: 29.71 ins. Hg, rising Visibility: 50 miles, distant haze 3-hr precip: 0.12 inch BHO SA 1455 15 SCT 80 SCT E100 BKN 120 BKN 50 062/56/50/0312G19/971/ CU/CUFRA ALQDS FEW MDT CU S-W LWR ACSL WSW-NNE DSNT HZ WND 34V06 R-E35 VRY LGT AND INTMT/ 8/270 53005 ASOS 60014 MANUAL 60012 1 P.M. Weather: Scattered cumulus, scattered stratocumulus cumulogenitus, scattered altocumulus, broken altocumulus, broken cirrostratus, broken cirrus, cumulus WSW-NNE and distant ESE-SSW, few moderate cumulus SW-N, lower altocumulus lenticularis distant NE-SE-SSW, cirrostratus SE-WSW, higher cirrus layer partly thin, virga SSE-SSW, light distant haze Temperature: 63F; Dew Point: 49F; Wind: N at 5 kts, Wind: Light and variable Sea-level pressure: 29.74 ins. Hg, rising Visibility: 55 miles, distant haze 6-hour precip: 0.12 inch 6-hour max. temp: 64F BHO SA 1755 25 SCT 35 SCT 70 SCT E100 BKN 200 BKN 250 BKN 55 070/63/49/0105/974/ CU WSW-NNE AND DSNT ESE-SSW FEW MDT CU SW-N LWR ACSL DSNT NE-SE-SSW CS SE-WSW HIER CI LYR PRTLY THN VIRGA SSE-SSW DSNT HZ WND LGT AND VRB/ 8/277 51008 ASOS 60014 MANUAL 60012 10064 20051 WEATHER SUMMARY FOR THURSDAY, JUNE 13, 2013 TEMPERATURE (DEGREES F) MAX.....65 NORMAL.....74 MIN.....50 NORMAL.....56 MEAN....58 NORMAL.....65 DEPARTURE FROM 30-YEAR NORMAL....................-7 TOTAL DEPARTURE FOR THE MONTH....................+7 [+0.3 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..............7 DEPARTURE..........+4 TOTAL HEATING UNITS FOR THE MONTH.............40 DEPARTURE..........-9 TOTAL HEATING UNITS FOR THE SEASON..........5774 DEPARTURE........-577 TOTAL HEATING UNITS LAST SEASON TO DATE.....4957 DIFFERENCE.......+817 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...............32 NE AT 11:50 P.M. AERO....................33 NE AT 11:50 P.M. ASOS....................35 ENE AT 11:50 P.M. DAVIS...................31 ENE AT 11:50 P.M. RMY 34 FASTEST MILE FOR YESTERDAY.................24 NE AT 11:50 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE..............23 NE AT 11:51 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.............22 NE AT 11:51 P.M. AVERAGE WIND SPEED AND DIRECTION..........9.5 NE ASOS...................9.4 DAVIS..................8.2 NE [052 deg] * lastest of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....2.19 DEPARTURE............+2.03 ASOS..............2.19 TOTAL PRECIPITATION FOR THE MONTH..........9.13 DEPARTURE............+7.00 ASOS..............9.17 TOTAL PRECIPITATION FOR THE YEAR..........29.22 DEPARTURE............+4.43 ASOS..............N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 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/.../.. 24 E AERO 24 MPH E RMY N/A 6/11 65/53/59/-6/1.61/.../.. 29 E AERO 29 MPH E RMY N/A 6/12 69/54/62/-3/0.01/.../.. 38 NW AERO 41 MPH NW RMY 41 6/13 65/50/58/-7/0.93/.../.. 32 NE AERO 33 MPH NE RMY 34 6/14 morning low temp: 51F; the normal low is now 57F 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 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 14 HIGH 93F IN 1956 LOW 41F IN 1912 PRECIP 1.49 INS 1896 PEAK GUST 55 MPH WNW IN 1958 RECORDS FOR JUNE 15 HIGH 94F IN 1988 LOW 42F IN 1959, 1978 PRECIP 2.04 INS IN 1903 PEAK GUST 52 MPH SW IN 1972 TODAY'S REPORT PREPARED BY: Sean Fankhauser