Wednesday, June 5, 2019

| June 5, 2019 | Reply

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 5, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

OVERCAST AND HAZY WITH WARMER THAN NORMAL
TEMPERATURES….

Today we observed hazy conditions, which limited
visibility to less than 40 miles. Skies were
overcast with translucent cirrostratus clouds,
posing little interruption to the abundance of
sunshine. Winds were southwesterly at an average
of 15 mph, advecting unseasonably warm air into
the region. The high so far today is 81F, 9 degrees
above the daily normal maximum of 72F. The low since
midnight is 57F, 3 degrees above the normal minimum
of 54F.

Today’s Observations:

7 A.M.
Weather: Broken altocumulus, broken cirrostratus
Temperature: 65F; Dew Point: 50F; Wind: SW at 15G25 kts,
Peak wind: 30 MPH (26 kts) SW at 6:02 A.M.
Sea-level pressure: 29.89 ins. Hg, rising steadily
Visibility: 40 miles
6-hr Max temp: 65F
6-hr Min temp: 57F
24-hr Precip: 0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1155 E80 BKN 250 BKN 40 121/65/50/2315G25/989/
DSNT HZ ALQDS PK WND 2326/02/ 8/078 53006 10065 20057

10 A.M.
Weather: Broken altocumulus, overcast cirrus
Temperature: 73F; Dew Point: 53F; Wind: SW at 9G18 kts
Sea-level pressure: 29.87 ins. Hg, rising then falling
Visibility: 35 miles, distant haze
3-hr Precip: 0.00 ins.
BHO SA 1455 E100 BKN 250 OVC 35 116/73/53/2209G18/987/
DSNT HZ ALQDS/ 8/072 58005

1 P.M.
Weather: Scattered cumulus, overcast cirrus
Temperature: 81F; Dew Point: 56F; Wind: SW at 9G18 kts
Sea-level pressure: 29.83 ins. Hg, falling, then more quickly
Visibility: 30 miles, distant haze
6-hr Max temp: 81F
6-hr Min temp: 65F
6-hr Precip: 0.00 ins.
BHO SA 1755 50 SCT 250 OVC 30 101/81/56/2409G18/983/ DSNT HZ/
8/102 58015 10081 20065

SUMMARY FOR TUESDAY, JUNE 4, 2019

TEMPERATURE (DEGREES F)
MAX…..70   NORMAL…..72
MIN…..45   NORMAL…..54
MEAN….58   NORMAL…..63

DEPARTURE FROM 30-YEAR NORMAL………………….-5
TOTAL DEPARTURE FOR THE MONTH………………….-5 [-1.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………7   DEPARTURE………+3
TOTAL HEATING UNITS FOR THE MONTH…………..13   DEPARTURE………-5
TOTAL HEATING UNITS FOR THE SEASON………..6232   DEPARTURE……..-89
TOTAL HEATING UNITS LAST SEASON TO DATE……5876   DIFFERENCE……+356

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE………-2
TOTAL COOLING UNITS FOR THE MONTH……………0   DEPARTURE………-7
TOTAL COOLING UNITS FOR THE SEASON…………..8   DEPARTURE……..-23
TOTAL COOLING UNITS LAST SEASON TO DATE……..69   DEPARTURE……..-61

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..29 W   AT 2:14 P.M.
AERO…………………….23 W   AT 2:19 P.M.
ASOS…………………….29 W   AT 2:13 P.M.
DAVIS……………………28 WSW AT 2:14 P.M.  RMY N/A
FASTEST MILE FOR YESTERDAY………………….22 W   AT 2:14 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….22 W   AT 2:14 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………23 WSW AT 2:14 P.M.
AVERAGE WIND SPEED AND DIRECTION……………10.7 W
ASOS……………………10.3
DAVIS…………………..10.9 WSW [242 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE…….-0.17
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.04  DEPARTURE…….-0.62
ASOS…………..0.03
TOTAL PRECIPITATION FOR THE YEAR……….25.93  DEPARTURE…….+2.61
ASOS………….25.76

PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

05/01 57/40/49/-4/0.00/0.0/…/..           21 S   AERO 21 SSE  RMY 21
05/02 45/41/43/-10/0.02/0.0/…/..          21 NE  AERO 21 SSW  RMY 20
05/03 60/43/52/-1/…./0.0/…/..           23 S   AERO 23 S    RMY 22
05/04 54/46/50/-4/…./0.0/…/..           14 ENE AERO 14 ENE  RMY 17
05/05 52/44/48/-6/0.00/0.0/…/..           18 NE  AERO 20 NE   RMY N/A
05/06 58/44/51/-3/…./0.0/…/..           25 NE  AERO 26 ENE  RMY 24
05/07 72/41/57/+2/0.12/0.0/…/..           30 S   AERO 29 S    RMY 30
05/08 67/48/58/+3/0.00/0.0/…/..           20 NE  AERO 20 NE   RMY 19
05/09 60/43/52/-3/0.00/0.0/…/..           21 SE  AERO 21 E    RMY 22
05/10 61/46/54/-1/0.16/0.0/…/..           35 S   AERO 37 S    RMY 37
05/11 68/50/59/+3/…./…/…/..           26 NW  AERO M  M    RMY N/A
05/12 50/36/43/-13/0.68/…/…/..          30 ENE AERO M  M    RMY N/A
05/13 52/38/45/-11/…./…/…/..          35 E   AERO M  M    RMY 34
05/14 44/38/41/-16/…./…/…/..          26 NNE AERO M  M    RMY 25
05/15 58/40/49/-8/…./…/…/..           28 NW  AERO M  M    RMY 28
05/16 68/46/57/0/…./…/…/..            17 NW  AERO M  M    RMY 19
05/17 64/49/57/0/…./…/…/..     22 WNW AERO 21 WNW  RMY 25
05/18 72/49/61/+3/…./…/…/..           26 SSE AERO 25 SSE  RMY 29
05/19 69/50/60/+2/…./…/…/..           39 S   AERO 43 SSE  RMY 42
05/20 85/52/69/11/…./…/…/..     35 SW  AERO 40 SW   RMY 39
05/21 69/52/61/+2/0.00/…/…/..           40 NW  AERO 46 NW   RMY 45
05/22 68/49/59/0/0.00/…/…/..            32 NNW AERO 29 NW   RMY N/A
05/23 68/48/58/-1/…./…/…/..     36 SSW AERO 37 SSW  RMY 40
05/24 68/47/58/-1/…./…/…/..     47 NW  AERO 47 NW   RMY 51
05/25 75/47/61/+1/…./…/…/..     M  M   AERO 35 SSW  RMY 39
05/26 85/49/67/+7/…./0.0/…/..           40 W   AERO 38 W    RMY 39
05/27 76/57/67/+7/…./0.0/…/..           30 NE  AERO 22 NE   RMY 27
05/28 57/48/53/-8/…./0.0/…/..           26 E   AERO 22 ESE  RMY 25
05/29 51/45/48/-13/…./0.0/…/..          21 NNW AERO 21 NNW  RMY N/A
05/30 63/46/55/-6/…./0.0/…/..     23 S   AERO 23 S    RMY 25
05/31 72/54/63/2/…./0.0/…/..     28 N   AERO 23 N    RMY 26

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 71/54/63/+1/0.00/…/..               21 E  AERO 20 E  RMY 18
06/02 75/51/63/+1/…./…/..               23 S  AERO 21 S  RMY N/A
06/03 69/50/60/-2/…./…/..               41 W  AERO 39 W  RMY 43
06/04 70/45/58/-5/0.00/…/..               29 W  AERO 23 W  RMY N/A

06/05 Low temp since midnight is 57F; normal low is 54F

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JUNE 5
HIGH 95F IN 1930
LOW 41F IN 1891
PRECIP 2.83 INS IN 1982
PEAK GUST 57 MPH NNW IN 1988

RECORDS FOR JUNE 6
HIGH 95F IN 1925
LOW 42F IN 1885, 1894, 1920, 1945
PRECIP 3.61 INS IN 2000
PEAK GUST 58 MPH NE IN 2000

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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