Tuesday, June 4, 2019

| June 4, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JUNE 4, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

FAIR WEATHER WITH WESTERLY WINDS AND
INCREASING AFTERNOON CLOUDS….

Visibility has remained 75 miles throughout the day.
Winds are westerly with a max gust so far of 25 mph.
Cloud cover has increased since this morning, covering
the majority of the sky afternoon. Humidity decreased
to 30% by the 1 P.M. observation. The high so far
today is 68F, 4 degrees below the daily normal maximum
of 72F. The low since midnight is 45F, nine degrees
below the normal minimum of 54F.

Today’s Observations:

7 A.M.
Weather: Clear, few cirrostratus
Temperature: 53F; Dew Point: 39F; Wind: W at 7 kts
Sea-level pressure: 30.06 ins. Hg, rising steadily
Visibility: 75 miles
6-hr Max temp: 53F
6-hr Min temp: 45F
24-hr Precip: 0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1155 CLR 75 179/53/39/2807/006/ FEW DSNT
CS ALQDS/ 8/005 53010 10053 20045

10 A.M.
Weather: Scattered cumulus and cirrostratus
Temperature: 63F; Dew Point: 38F; Wind: WSW at 7G12 kts
Sea-level pressure: 30.06 ins. Hg, rising then falling
Visibility: 75 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 SCT 50 SCT 250 75 178/63/38/2407G12/006/
8/102 58001

1 P.M.
Weather: Broken cumulus and cirrostratus
Temperature: 66F; Dew Point: 35F; Wind: WNW at 9G16 kts
Sea-level pressure: 30.01 ins. Hg, falling, then more quickly
Visibility: 75 miles
6-hr Max temp: 68F
6-hr Min temp: 53F
6-hr Precip: 0.00 ins.
BHO SA 1755 E55 BKN 250 BKN 75 164/66/35/2809G16/001/
8/105 58014 10068 20053

SUMMARY FOR MONDAY, JUNE 3, 2019

TEMPERATURE (DEGREES F)
MAX…..69   NORMAL…..71
MIN…..50   NORMAL…..53
MEAN….60   NORMAL…..62

DEPARTURE FROM 30-YEAR NORMAL………………….-2
TOTAL DEPARTURE FOR THE MONTH…………………..0 [-0.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………5   DEPARTURE………+1
TOTAL HEATING UNITS FOR THE MONTH……………9   DEPARTURE………-5
TOTAL HEATING UNITS FOR THE SEASON………..6227   DEPARTURE……..-90
TOTAL HEATING UNITS LAST SEASON TO DATE……5860   DIFFERENCE……+367

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE………-2
TOTAL COOLING UNITS FOR THE MONTH……………0   DEPARTURE………-5
TOTAL COOLING UNITS FOR THE SEASON…………..8   DEPARTURE……..-21
TOTAL COOLING UNITS LAST SEASON TO DATE……..69   DEPARTURE……..-61

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..41 W   AT 2:53 P.M.
AERO…………………….39 W   AT 2:33 P.M.
ASOS…………………….45 W   AT 2:53 P.M.
DAVIS……………………45 WSW AT 1:34 P.M.  RMY 43
FASTEST MILE FOR YESTERDAY………………….33 W   AT 2:54 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….33 W   AT 2:53 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………34 WSW AT 2:53 P.M.
AVERAGE WIND SPEED AND DIRECTION……………16.7 W
ASOS……………………15.8
DAVIS…………………..16.9 WSW [254 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE…….-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.04  DEPARTURE…….-0.45
ASOS…………..0.03
TOTAL PRECIPITATION FOR THE YEAR……….25.93  DEPARTURE…….+2.78
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 Low temp since midnight is 45F; normal low is 54F

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

RECORDS FOR JUNE 4
HIGH 99F IN 1919 [Record for month]
LOW 41F IN 1915,1926
PRECIP 1.52 INS IN 2007
PEAK GUST 48 MPH SSE IN 1983

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

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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