BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, JULY 8, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0416E SUNSET:  1923E RISE AND REPEAT- ANOTHER DAY OF CLOUDS AND INCOMING AFTERNOON STORMS... Two lines of storms cruised their way through the area within the past 24 hours. The first batch yesterday evening  delivered frequent cloud to ground lightning (even taking out our Davis #1  anemometer!) and a peak gust of 63 MPH at 6:27 PM! This set a new daily wind record for the 7th, beating the old speed of 55 MPH in 1989.  The second batch rolled in during the wee hours this morning dumping another round of rain, wind, and lightning. Total accumulated rainfall amounted to 1.11 inches. Monthly sum is now a whopping 5.75 inches...one of the wettest beginnings to July on record! Current radar looks active to our distant southwest, so we anticipate our rain gauge (yet again) to collect more precip later today as Elsa meanders northeastward.  The heat and humidity have taken a break today after 2-consecutive days near 90F. Temperatures have hung in the mid-60s thanks to a wind shift off the water. Dew points have responded as well, slipping into the upper-50s. Visibility continues to be poor. We've only been able to see 20-30 miles. The high so far today is 67F, 14 degrees below the daily average of 81F. The low so far today is 59F, 4 degrees below the daily average of 63F.   PRELIMINARY STATS FOR JUNE 2021 TEMPERATURE, Deg. F Avg. Max. 80.9 [+5.9] Avg. Min. 60.4 [+3.3] Mean      70.7 [+4.6] 24-hour corrected mean: 70.0 Max. for month: 95F on the 29th Min. for month: 50F on the 1st HEATING DEGREE DAYS Total heating units:     19 [-54] Total for the season:  5597 [-725] Total for last season: 5852 COOLING DEGREE DAYS Total cooling units:     197 [+92] Total for the season:    226 [+97] Total for last season:   184 PRECIPITATION, Inches Total: 2.72 [-1.59] Greatest in 24 hrs: 0.68 inches on the 22nd WIND, mph Avg. uncorrected wind speed: 10.4 mph Avg. corrected wind speed:   10.9 mph Prevailing wind direction:   SSW [22%] Peak gust and direction:     51 NW on the 30th SUNSHINE: Campbell-Stokes card minutes: 16230 minutes of a possible 26376 or 62% Astronomical total minutes: 16866 minutes of a possible 27415 or 62% Today's Observations: 7 A.M. Weather: Scattered Stratocumulus, Broken Altostratus, (thin) Broken Cirrus Temperature: 62F; Dew Point: 59F; Relative Humidity: 88% Wind: ENE @ 16G20 kts Sea-level pressure: 30.06 in. Hg; Rising, then rising more slowly Visibility: 20 miles, hazy 6-hr Max temp: 65F 6-hr Min temp: 59F 24-hr Precip: 1.11 ins. BHO SA 1155 50 SCT 180 BKN 250 -BKN 20 180/62/59/0616G20/006/ HAZY/ 8/412 51019 70111 10065 20059 10 A.M. Weather: Scattered Stratocumulus, Overcast Stratus Temperature: 65F; Dew Point: 58F; Relative Humidity: 78% Wind: ENE @ 12G19 kts Sea-level pressure: 30.10 in Hg; Rising unsteadily Visibility: 30 miles, hazy 3-hr Precip: 0.00 ins. BHO SA 1455 25 SCT 30 OVC 30 193/65/58/0612G19/010/ HAZY/ 8/4// 52015 1 P.M. Weather: Scattered Stratocumulus, Overcast Stratus Temperature: 65F, Dew point: 60F; Relative Humidity: 82% Wind: ENE @ 12G17 kts Sea-level pressure: 30.10 in Hg; Rising, then falling Visibility: 30 miles, hazy 6-hr Max temp: 67F 6-hr Min temp: 62F 6-hr Precip: 0.00 ins. BHO SA 1755 25 SCT 30 OVC 30 192/65/60/0612G17/010/ HAZY/ 8/4// 58001 10067 20062 SUMMARY FOR WEDNESDAY, JULY 7, 2021 TEMPERATURE (DEGREES F) MAX.......88     NORMAL.....81 MIN.......66     NORMAL.....63 MEAN......77     NORMAL.....72 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL......... +5 TOTAL DEPARTURE FOR THE MONTH.....................-36 [-5.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE....... 0 TOTAL HEATING UNITS FOR THE MONTH...............21  DEPARTURE.......+19 TOTAL HEATING UNITS FOR THE SEASON..............21  DEPARTURE.......+19 TOTAL HEATING UNITS LAST SEASON TO DATE..........0  DEPARTURE.......+21 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY...............12  DEPARTURE.......+4 TOTAL COOLING UNITS FOR THE MONTH...............32  DEPARTURE......-17 TOTAL COOLING UNITS FOR THE SEASON.............258  DEPARTURE......+70 TOTAL COOLING UNITS LAST SEASON TO DATE........219  DEPARTURE......+39 PEAK WIND GUST (MPH):                      420C/Official..............63 NW  @ 6:27 P.M.                      AEROVANE (south tower).....75 NW  @ 6:27 P.M.                      VECTOR #1..................70     @ 6:27 P.M.                      VECTOR #2 (south tower)....76     @ 6:27 P.M.                      DAVIS #2 (south tower).....58 NW  @ 6:22 P.M.                      RMY........................70     @ 6:27 P.M.                      MERLIN.....................61                      ASOS...........OUT OF SERVICE D/T RENOVATIONS                      DAVIS #1.......DEFECTIVE D/T LIGHTNING STRIKE FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................41 NW  @  6:28 P.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..............41     @  6:28 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............49 NW  @  6:29 P.M. MAXIMUM 2-MINUTE RMY AVERAGE....................41 NW  @  6:28 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE........OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE DAVIS #1 AVERAGE....DEFECTIVE D/T LIGHTNING STRIKE AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL......8.3 W  [200 total miles]                      VECTOR #1................9.2                      DAVIS #2.................9.2 W                      RMY......................8.9 W                      ASOS.....................OUT OF SERVICE D/T RENOVATIONS                      DAVIS #1.................DEFECTIVE D/T LIGHTNING STRIKE PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......1.11  DEPARTURE....+1.01 TOTAL PRECIPITATION FOR THE MONTH.............5.75  DEPARTURE....+4.98 TOTAL PRECIPITATION FOR THE YEAR.............29.13  DEPARTURE....+1.39       PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system 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 M:    Missing data 06/01   74/50/62/0/0.00/425/47            20 WSW  AERO 24 WSW  RMY 22 06/02   80/55/68/+6/0.00/553/61           28 S    AERO 25 S    RMY 28 06/03   73/56/65/+3/0.01/073/08           29 SSW  AERO 29 SSW  RMY 29 06/04   77/61/69/+6/0.02/054/06           23 SW   AERO 25 WSW  RMY 25 TSTM 06/05   87/60/74/+11/0.00/801/88          32 SSW  AERO 37 SSW  RMY 35 06/06   91/69/80/+17/0.00/819/90          30 WSW  AERO 31 WSW  RMY 32 06/07   92/69/81/+17/0.00/838/92          31 SSW  AERO 35 SSW  RMY 34 06/08   92/69/81/+17/0.06/456/50          24 WSW  AERO 25 WSW  RMY 27 TSTM 06/09   88/70/79/+15/0.02/530/58          21 N    AERO 23 NNW  RMY 23 06/10   70/53/62/-3/0.00/795/87           28 NE   AERO 28 NE   RMY 28 06/11   70/51/61/-4/0.13/411/45           21 SSE  AERO 22 SSE  RMY 22 06/12   72/53/63/-2/0.43/430/47           20 WSW  AERO 18 WSW  RMY 20 06/13   82/56/69/+4/0.00/860/94           26 SSW  AERO 29 SSW  RMY 29 06/14   65/56/61/-5/0.63/027/03           28 S    AERO 30 SSE  RMY 29 06/15   77/61/69/+3/T/357/39              18 NE   AERO 20 NE   RMY 18 TSTM 06/16   73/56/65/-1/0.00/769/84           27 NNW  AERO 31 NNW  RMY 27 06/17   77/52/65/-2/0.00/880/96           21 WNW  AERO 21 NW   RMY 23 06/18   82/56/69/+2/T/789/86              26 WSW  AERO 28 WSW  RMY 30 06/19   86/63/75/+8/0.09/504/55           30 SW   AERO 32 SW   RMY 32 06/20   85/63/74/+6/0.00/816/89           24 S    AERO 25 SSW  RMY 25 06/21   83/65/74/+6/0.00/514/56           37 SSW  AERO 39 SSW  RMY 39 06/22   84/58/71/+3/0.68/229/25           30 NW   AERO 31 NW   RMY 31 TSTM 06/23   73/52/63/-5/0.00/807/88           25 NW   AERO 24 NW   RMY 26 06/24   76/58/67/-2/T/899/98              25 SE   AERO 24 SE   RMY 25 06/25   71/57/64/-5/0.11/046/05           23 S    AERO 23 S    RMY 23 06/26   81/61/71/+2/0.00/376/41           36 SSW  AERO 37 SSW  RMY 38 06/27   85/70/78/+9/0.00/476/52           38 SW   AERO 39 SW   RMY 42 06/28   93/70/82/+12/0.00/851/93          28 SW   AERO 28 SW   RMY 28 06/29   95/73/84/+14/T/750/82             26 W    AERO 30 W    RMY 27 TSTM 06/30   94/69/82/+12/0.54/731/80          51 NW   AERO 53 NW   RMY 56 TSTM RECORDS FOR JUNE: JUNE 7: Record high minimum temperature of 69F,         Surpasses previous record of 66F set in 1922 and 1953 JUNE 29: Record high maximum temperature of 95F,         Surpasses previous record of 94F set in 1933 JUNE 29: Record high minimum temperature of 73F,         Surpasses previous record of 71F set in 1999 JUNE 30: Record high maximum temperature of 94F,         Ties previous record of 94F set in 1964 PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system 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 M:    Missing data 07/01   80/65/73/+2/0.74/.../..           22 W   AERO 20 WSW   RMY 21 07/02   65/55/60/-11/1.49/.../..          37 NE  AERO 36 NE    RMY 39 07/03   56/54/55/-17/1.98/.../..          41 NE  AERO 44 NE    RMY 45 07/04   66/54/60/-12/0.16/.../..          26 ENE AERO 23 ENE   RMY 26 07/05   74/53/64/-8/0.01/.../..           26 SSW AERO 28 SSW   RMY 27 07/06   87/66/77/+5/0.24/.../..           37 W   AERO 48 W     RMY 38 TSTM 07/07   88/88/77/+5/.../.../..            63 NW  AERO 75 NW    RMY 70 TSTM 07/08 The low since midnight is 59F, the daily normal low is 63F RECORDS FOR JULY: JULY 2: Record daily precipitation of 1.49",         Surpasses previous record of 1.42" set in 1986 JULY 3: Record daily precipitation of 1.98",         Surpasses previous record of 1.36" set in 1985 JULY 7: Record peak gust of 63 MPH,         Surpasses previous record of 55 MPH set in 1989 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR JULY 8 HIGH 95F IN 1981 LOW 50F IN 1919 PRECIP 1.74 INS IN 1916 PEAK GUST 46e SSW IN 1941 RECORDS FOR JULY 9 HIGH 98F IN 1912 LOW 47F IN 1909 PRECIP 3.74 INS IN 1921 WIND 46 MPH NW IN 1992 TODAY'S REPORT PREPARED BY: Andrew Swanson