Monday, June 22, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JUNE 22, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

1.19 INCHES FALL FROM REMNANTS OF BILL,
HUMIDITY AND FOG LINGERS

Rain came to an end yesterday in the early afternoon, bringing
the final storm total to 1.19 inches of rain. This new rain has
erased the monthly deficit for June; however, the deficit for the
year remains at more than 3 inches.

Dense fog moved out after sunrise this morning, revealing mostly
hazy and humid conditions. Clouds were quick to build in along
the coast and Great Blue Hill was caught between a sea breeze and
inland influence.

By the 1:00 PM EST observation partly cloudy conditions
were present, with a few moderate cumulus visible ESE
and N of the station. Clouds have had some difficulty
increasing to a towering stature as temperatures rose
to a maximum of 83F.
Today’s Observations:

7 A.M.
Weather: Fog, clear above, few cumulus distant S and NNW-E,
few cirrus distant SE-SW
Temperature: 67F; Dew Point: 66F; Wind: NW at 7 kts
Sea-level pressure: 29.87 ins. Hg, increasing, then more quickly
Visibility: 15 miles, except 10 miles N-ENE, fog
6-hr Max temp: 67F
6-hr Min temp: 63F
24-hr precip: 0.26 ins.
BHO SA 1155 CLR 15F 116/67/66/3107/987/
VSBY N-ENE 10 MI FEW CU DSNT S AND NNW-E FEW CI DSNT SE-SW/
8/101 53024 ASOS 70033 MANUAL 70026 10067 20063

10 A.M.
Weather: Clear, few cumulus ESE-NNW, few moderate cumulus NW,
few cirrus distant ESE-SSE
Temperature: 75F; Dew Point: 65F; Wind: estimated NNW at 5 kts
Wind Speed: Light
Sea-level pressure: 29.91 ins. Hg, rising, then more slowly
Visibility: 30 miles, hazy
BHO SA 1455 CLR 30 130/75/65/E3305/991/
FEW CU ESE-NNW FEW MDT CU NW FEW CI DSNT ESE-SSE HAZY WND LGT/ 8/201 51014

1 P.M.
Weather: Scattered cumulus, few momderate cumulus ESE and N
Temperature: 83F; Dew Point: 62F; Wind: estimated W at 6 kts
Wind Speed: Light
Sea-level pressure: 29.90 ins. Hg, rising, then falling and lower
Visibility: 40 miles, except 30 miles N-NE, hazy
6-hr Max temp: 83F
6-hr Min temp: 67F
BHO SA 1755 20 SCT 40 126/83/62/E2706/990/
VSBY N-NE 30 MI FEW MDT CU ESE AND N HAZY WND LGT/
8/200 58004 10083 20067
SUMMARY FOR SUNDAY, JUNE 21, 2015

TEMPERATURE (DEGREES F)
MAX…..76   NORMAL…..77
MIN…..60   NORMAL…..59
MEAN….68   NORMAL…..68

DEPARTURE FROM 30-YEAR NORMAL……………………+0
TOTAL DEPARTURE FOR THE MONTH…………………..-32 [-1.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………0  DEPARTURE………..-1
TOTAL HEATING UNITS FOR THE MONTH…………..87  DEPARTURE……….+22
TOTAL HEATING UNITS FOR THE SEASON………..6491  DEPARTURE………+123
TOTAL HEATING UNITS LAST SEASON TO DATE……6422  DIFFERENCE………+69

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………3   DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH…………..52   DEPARTURE……….-7
TOTAL COOLING UNITS FOR THE SEASON…………101   DEPARTURE………+18
TOTAL COOLING UNITS LAST SEASON TO DATE……..64   DIFFERENCE……..+37

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….26 S    AT   8:58 A.M. *
ASOS……………………29 S    AT   8:56 A.M.
DAVIS…………………..27 S    AT   8:52 A.M. RMY 29
FASTEST MILE FOR YESTERDAY…………………23 S    AT   8:56 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………22 S    AT   8:59 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..21 S    AT   8:59 A.M.
AVERAGE WIND SPEED AND DIRECTION………….10.5 SSE
ASOS………………….10.8
DAVIS………………….9.9 SSE [168 deg.] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.26   DEPARTURE….+0.13
ASOS……………0.33
TOTAL PRECIPITATION FOR THE MONTH………..3.37   DEPARTURE….+0.10
ASOS……………3.39
TOTAL PRECIPITATION FOR THE YEAR………. 22.74   DEPARTURE….-3.06
ASOS……………N/A ***

*** ASOS annual totals not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/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

6/1  48/46/47/-15/0.69/000/00              32 NE  RMY 34
6/2  47/44/46/-16/…./000/00              28 NNE RMY 28
6/3  59/44/52/-10/0.00/172/19              16 ESE RMY 16
6/4  63/46/55/-8/0.00/445/49               17 E   RMY 16
6/5  70/49/60/-3/T/500/55                  17 NNE RMY 17
6/6  65/52/59/-4/0.06/382/42               26 ENE RMY 27
6/7  73/49/61/-3/0.00/884/97               28 S   RMY 29
6/8  73/50/62/-2/T/310/34                  41 SSW RMY 48
6/9  76/61/69/+4/0.03/228/25               29 SSW RMY 32
6/10 82/57/70/+5/0.00/840/92               24 WSW RMY N/A
6/11 85/61/73/+8/0.00/594/65               29 SSW RMY 32
6/12 86/65/76/+11/…./522/57              26 S   RMY 29
6/13 83/67/75/+10/T/586/64                 24 N   RMY 27
6/14 75/61/68/+2/0.00/641/70               21 SSE RMY 21
6/15 61/52/57/-9/…./000/00               25 SE  RMY 26
6/16 73/56/65/-1/…./009/01               18 NW  RMY N/A
6/17 70/57/64/-3/0.00/…/..               28 NE  RMY 28
6/18 76/54/65/-2/0.00/…/..               22 S   RMY 26
6/19 84/60/72/+5/T/…/..                  24 SSW RMY 22
6/20 75/56/66/-2/…./…/..               23 SSE RMY N/A
6/21 76/60/68/0/…./…/..                26 S   RMY 29

6/22 low since midnight is 63F; normal low is now 59F

DAILY RECORDS FOR JUNE 2015

6/1- NEW RECORD LOW MAXIMUM TEMPERATURE OF 48F
surpasses previous record of 51F in 2004

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

RECORDS FOR JUNE 22
HIGH 93F IN 1921, 2012
LOW 43F IN 1940
PRECIP 1.57 INS IN 1900
PEAK GUST 74 MPH NW IN 1988

RECORDS FOR JUNE 23
HIGH 93F IN 1888
LOW 45F IN 1885
PRECIP 0.70 INS IN 2006
PEAK GUST 63 MPH SE IN 1972 (AGNES)

TODAY’S REPORT PREPARED BY: Brian Fitzgerald