Monday, July 13, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JULY 13, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
88F YESTERDAY TIES HOTTEST READING OF THE YEAR
SO FAR, STILL NO 90F THIS YEAR
Above normal heat had a grip over New England yesterday,
with some stations in the area reporting maximum temperature
hitting the 90F degree mark. Yesterday’s maximum reading
here on Great Blue Hill hit 88F just after 3:00 PM EST, tying
the hottest reading of the year, last recorded on May 10th.
As of today, this is the latest date without a 90F degree
reading since July 23 of 1998.
Hazy conditions have remained in place even with a wind shift
from predominately W yesterday to E to ESE this morning. By
the 1:00 PM EST observation thin cirrostratus and hazy conditions
had overtaken the sky, with winds shifting to the NE. The
offshore winds had aided in cooling temperatures, with a maximum
temperature of 82F recorded by 10:00 AM EST.
Today’s Observations:
7 A.M.
Weather: Scattered cirrus
Temperature: 75F; Dew Point: 63F; Wind: E at 9 kts
Sea-level pressure: 29.95 ins. Hg, increasing, then more quickly
Visibility: 10 miles, hazy
6-hr Max temp: 75F
6-hr Min temp: 69F
24-hr precip: none
BHO SA 1155 250 SCT 10 141/75/63/1009/995/ HAZY/ 8/001 53008
10075 20069
10 A.M.
Weather: Thin broken cirrostratus
Temperature: 80F; Dew Point: 65F; Wind: estimated E at 5 kts,
Wind Speed: light
Sea-level pressure: 29.95 ins. Hg, about the same as 3 hours ago
Visibility: 12 miles, hazy
BHO SA 1455 E250 -BKN 12 141/80/65/E1005/995/ HAZY WND LGT/
8/006 58000
1 P.M.
Weather: Thin broken cirrostratus, few cumulus distant
SE-W, partial halo around the sun
Temperature: 76F; Dew Point: 67F; Wind: NE at 7 kts
Sea-level pressure: 29.93 ins. Hg, falling, then more quickly
Visibility: 9 miles, hazy
6-hr Max temp: 82F
6-hr Min temp: 75F
BHO SA 1755 E250 -BKN 9 135/76/67/0507/993/ FEW CU DSNT SE-W
HAZY PARTIAL HALO ARND SUN/ 8/107 58006 10082 20075
SUMMARY FOR SUNDAY, JULY 12, 2015
TEMPERATURE (DEGREES F)
MAX…..88 NORMAL…..81
MIN…..67 NORMAL…..63
MEAN….78 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL……………………+6
TOTAL DEPARTURE FOR THE MONTH……………………+9 [+0.6 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..13 DEPARTURE……….+6
TOTAL COOLING UNITS FOR THE MONTH…………..84 DEPARTURE……….+6
TOTAL COOLING UNITS FOR THE SEASON…………222 DEPARTURE………+15
TOTAL COOLING UNITS LAST SEASON TO DATE…….217 DIFFERENCE………+5
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….20 W AT 2:29 A.M.
ASOS……………………19 W AT 2:37 A.M.
DAVIS…………………..18 W AT 2:28 A.M. RMY 17
FASTEST MILE FOR YESTERDAY…………………16 W AT 2:28 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………16 W AT 2:30 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13 W AT 12:58 A.M.
AVERAGE WIND SPEED AND DIRECTION……………9.0 W
ASOS……………………9.4
DAVIS…………………..7.8 WSW [254 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.00 DEPARTURE…..-0.13
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..2.64 DEPARTURE…..+1.26
ASOS……………2.69
TOTAL PRECIPITATION FOR THE YEAR………. 26.91 DEPARTURE…..-1.44
ASOS……………N/A ***
*** ASOS annual totals not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
7/1 80/63/72/+2/0.59/…/.. 30 SSE RMY 33 TSTM
7/2 78/60/69/-1/0.00/…/.. 23 WNW RMY N/A
7/3 79/58/69/-2/0.00/…/.. 17 SSW RMY 17
7/4 74/61/68/-3/T/…/.. 16 S RMY N/A
7/5 82/58/70/-1/0.00/…/.. 20 WSW RMY 20
7/6 85/64/75/+4/0.00/…/.. 20 S RMY 21
7/7 84/65/75/+4/0.02/…/.. 35 S RMY 40
7/8 87/68/78/+6/T/…/.. 23 NE RMY N/A
7/9 73/61/67/-5/…./…/.. 24 NE RMY 25
7/10 80/59/70/-2/…./…/.. 18 W RMY N/A TSTM
7/11 84/61/73/+1/0.00/…/.. 21 NW RMY 19
7/12 88/67/78/+6/0.00/…/.. 20 W RMY 17
7/13 low since midnight is 69F; normal low is now 63F
DAILY RECORDS FOR JULY 2015
7/10- NEW RECORD DAILY PRECIPITATION PENDING OF X.XX in 2015
surpasses previous record of 1.68 in. in 1933
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 13
HIGH 95F IN 1894
LOW 52F IN 1888, 1895, 1939, 1973
PRECIP 3.54 INS IN 1996
WIND 55 MPH SE IN 1996
RECORDS FOR JULY 14
HIGH 98F IN 1952
LOW 51F IN 1895, 1937
PRECIP 1.97 INS IN 1960
WIND 110e MPH NW IN 1942 [RECORD FOR MONTH]
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
