BLUE HILL METEOROLOGICAL OBSERVATORY  MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, APRIL 22, 2015     ALL TIMES ARE IN EASTERN STANDARD TIME FOG AND HUMIDITY CLEARS TUESDAY, CLEAR, DRY CONDITIONS TO START THE DAY TODAY Temperatures on Tuesday reached a daily maximum of 67F,  before cooling down overnight to a low this morning of  47F. Clouds cleared as well, with humidity dropping dew points from the 50s yesterday to the low 30s today.  Hazy, but clear conditions were present this morning, with a visibility of 70 miles in all directions. By the 1:00 PM EST observation clouds were on the increase with visibility dropping from WSW-N. Showers were visible  on radar further west; however, they were not quite visible from the tower at 1:00 PM EST. A peak wind of 39 MPH from the  south occurred just after the observation. A maximum reading of 67F had been read by this time as well. Today's Observations: 7 A.M. Weather: Clear, few cirrus distant SW-NNE Temperature: 52F; Dew Point: 33F; Wind: SSW at 7 kts, Sea-level pressure: 29.80 ins. Hg, increasing, then more slowly Visibility: 70 miles, light distant haze 6-hr Max temp: 52F 6-hr Min temp: 47F 24-hr precip: Trace BHO SA 1155 CLR 70 093/52/33/2107/980/ FEW CI DSNT SW-NNE LGT DSNT HZ ALQDS/ 8/002 51007 10052 20047 10 A.M.  Weather: Clear, few cumulus distant NNE and SSE and SW-NW, few cirrus distant SSW-NW Temperature: 64F; Dew Point: 32F; Wind: S at 9G19 kts,  Sea-level pressure: 29.76 ins. Hg, decreasing, then more quickly  Visibility: 70 miles, light distant haze BHO SA 1455 CLR 70 078/64/32/189G19/976/ FEW CU NNE AND SSE AND SW-NW FEW CI DSNT SSW-NW LGT DSNT HZ ALQDS/ 8/102 58015    1 P.M. Weather: Scattered altocumulus, scatterd cirrus, few cumulus is directions Temperature: 65F; Dew Point: 30F; Wind: S at 22G31 kts, Peak Wind: 33 knots S @ 12:24 PM EST Sea-level pressure: 29.69 ins. Hg, decreasing, then more slowly Visibility: 70 miles, except WSW-N 50 miles, light distant haze 6-hr Max temp: 67F 6-hr Min temp: 52F  BHO SA 1755 90 SCT 250 SCT 70 053/65/30/1822G31/969/  VSBY WSW-N 50 MI FEW CU ALQDS LGT DSNT HZ ALQDS  PK WND 1833/24/ 8/132 56025 10067 20052 SUMMARY FOR TUESDAY, APRIL 21, 2015     TEMPERATURE (DEGREES F) MAX.....67   NORMAL.....58 MIN.....51   NORMAL.....40 MEAN....59   NORMAL.....49 DEPARTURE FROM 30-YEAR NORMAL......................+10 TOTAL DEPARTURE FOR THE MONTH......................+45 [+1.9 DEGREES/DAY]    HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............6  DEPARTURE..........-10 TOTAL HEATING UNITS FOR THE MONTH.............375  DEPARTURE..........-47      TOTAL HEATING UNITS FOR THE SEASON...........6118  DEPARTURE.........+213 TOTAL HEATING UNITS LAST SEASON TO DATE......5905  DIFFERENCE........+116 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY..................30 SSE   AT  12:45 A.M.                          ASOS.......................30 W     AT   1:02 P.M.                          DAVIS......................30 SSE   AT  12:44 A.M. RMY N/A  FASTEST MILE FOR YESTERDAY....................25 SSE   AT  12:15 A.M.      MAXIMUM 2-MINUTE ASOS AVERAGE.................22 W     AT   2:09 P.M.         MAXIMUM 2-MINUTE DAVIS AVERAGE................N/A       AVERAGE WIND SPEED AND DIRECTION.............12.1 W                    ASOS......................12.6                         DAVIS.....................11.6 SW [223 degrees]  * Last of several occurrences...   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....TRACE  DEPARTURE.....-0.13                          ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........3.05  DEPARTURE.....-0.29                            ASOS...............3.02  TOTAL PRECIPITATION FOR THE YEAR...........17.64  DEPARTURE.....+0.43                          ASOS................N/A ***  *** ASOS annual totals not available due to erroneous readings SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M...........0.0  DEPARTURE.....-0.1 TOTAL SNOWFALL FOR THE MONTH...............TRACE  DEPARTURE.....-2.7   TOTAL SNOWFALL FOR THE SEASON..............150.8  DEPARTURE....+88.4  PRELIMINARY CLIMATE SUMMARY FOR APRIL 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 4/1  44/26/35/-6/0.00/0.0/748/98              30 WNW RMY 31  4/2  59/29/44/+3/T/0.0/375/49                 39 SSW RMY 43  4/3  56/47/52/+10/0.02/0.0/000/00             36 SW  RMY N/A 4/4  49/32/41/-1/..../0.0/501/65              54 NW  RMY 64 4/5  47/30/39/-4/..../0.0/464/60              40 W   RMY 45 4/6  48/33/41/-2/0/00/0.0/544/70              18 NE  RMY N/A   4/7  39/34/37/-6/..../0.0/000/00              21 NE  RMY N/A 4/8  41/32/37/-7/..../T/000/00                30 ENE RMY 32 4/9  35/32/34/-10/..../0.0/000/00             31 ENE RMY 32 4/10 53/35/44/-1/..../0.0/000/00              31 SW  RMY N/A 4/11 56/38/46/+1/0.00/0.0/744/94              39 WNW RMY 48 4/12 68/35/52/+7/0.00/0.0/762/96              23 WNW RMY 23   4/13 69/47/58/+12/0.00/0.0/764/96             35 SSW RMY N/A 4/14 65/51/58/+12/0.05/0.0/072/09             37 SSW RMY N/A 4/15 67/45/56/+9/0.00/0.0/.../..              32 NW  RMY 33 4/16 64/42/53/+6/0.00/0.0/.../..              31 S   RMY 21 4/17 64/45/55/+8/0.05/0.0/.../..              31 SSW RMY 32 4/18 64/43/54/+6/0.00/0.0/.../..              31 N   RMY 36  4/19 55/39/47/-1/0.00/0.0/.../..              25 NNW RMY N/A 4/20 55/38/47/-2/..../0.0/000/00              36 SE  RMY 40 4/21 67/51/59/+10/..../0.0/.../..             30 SSE RMY N/A 4/22 low since midnight is 47F normal low is 40F DAILY RECORDS FOR APRIL 2015 4/3 - NEW RECORD DAILY HIGH MINIMUM TEMPERATURE: 47F       surpasses the previous record of 46F in 1892 DAILY EXTREMES  Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR APRIL 22 HIGH 85 IN 1977, 2001 LOW 26 IN 1981 PRECIP 1.85 IN. IN 2000 SNOWFALL 3.0 IN. IN 1940 PEAK GUST 68e MPH NW IN 1945 RECORDS FOR APRIL 23 HIGH 85 IN 1908, 2007  LOW 25 IN 1933,1989 PRECIP 1.99 IN. IN 2012 SNOWFALL 2.0 IN. IN 2012 PEAK GUST 64 MPH WNW IN 1962 TODAY'S REPORT PREPARED BY:  Brian Fitzgerald