BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, OCTOBER 22, 2015 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
MUCH WARMER TEMPERATURES TODAY WITH SOUTH TO SSW WINDS
PRECIPITATION DEPARTURE FOR YEAR REACHES -7.00 INCHES
 
Temperatures were running much warmer than normal today
after yesterday ended up 5 degrees above normal.
Brief mostly very light showers today followed only 0.01
of rain for yesterday and the month now falls more than
2 inches drier than normal.
The departure in precipitation for 2015 has just reached
minus 7 inches through yesterday.
 
Today's Observations:
 
7 A.M.
Weather: Obscurement with heavy fog
Temperature: 55F; Dew Point: 55F; Wind: SSW at 12 kts,
Sea-level pressure: 30.21 ins. Hg, about steady
Visibility: 1/16 mile, heavy fog
6-hr Max temp: 55F
6-hr Min temp: 52F
24-hr precip: 0.01 in.
BHO SA 1155 W2X 1/16F 231/55/55/2012/021/ 8//// 58001 ASOS 70001
MANUAL 70001 10055 20052  
 
10 A.M.
Weather: Broken altocumulus (2 levels), overcast cirrostratus,
small break in overcast distant SSW 
Temperature: 64F; Dew Point 53F; Wind: SSW at 14 kts,
Sea-level pressure: 30.17 ins. Hg, falling then more rapidly 
Visibility: 20 miles, hazy 
BHO SA 1455 E100 BKN 170 BKN 250 OVC 20 216/64/53/2014/017/
BINOVC DSNT SSW HAZY/ 8/077 58015 
 
1 P.M.
Weather: Broken altocumulus chaotic, few lenticularis,
broken dense cirrus, overcast cirrus, overcast partly thin
small break in overcast
Temperature: 67F; Dew Point 52F; Wind: S at 13G22 kts,
Sea-level pressure: 30.06 ins. Hg, falling then more rapidly
Visibility: 35 miles, distant haze  
6-hr Max temp: 68F
6-hr Min temp: 55F
6-hr Precip: trace
BHO SA 1755 100 SCT E150 BKN 220 BKN 250 OVC 35 181/67/52/1913G22/006/
AC CHAOTIC FEW ACSL DNS CI (2 LVLS) OVC PTLY THN DSNT HZ/ 8/092 58035
MANUAL 6000/ 10068 20055
 
SUMMARY FOR WEDNESDAY, OCTOBER 21, 2015
  
TEMPERATURE (DEGREES F)
MAX.....59   NORMAL.....59
MIN.....51   NORMAL.....41
MEAN....55   NORMAL.....50
 
DEPARTURE FROM 30-YEAR NORMAL.......................+5
TOTAL DEPARTURE FOR THE MONTH......................-14  [-0.9 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE...........0
TOTAL COOLING UNITS FOR THE MONTH...............0   DEPARTURE..........-5
TOTAL COOLING UNITS FOR THE SEASON............810   DEPARTURE........+208
TOTAL COOLING UNITS LAST SEASON TO DATE.......595   DIFFERENCE.......+215
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............10   DEPARTURE..........-5
TOTAL HEATING UNITS FOR THE MONTH.............259   DEPARTURE..........+8
TOTAL HEATING UNITS FOR THE SEASON............302   DEPARTURE.........-91
TOTAL HEATING UNITS LAST SEASON TO DATE.......291   DIFFERENCE........+11

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................18  SSE AT 11:07 P.M. 
                   ASOS........................20  SSE AT 11:08 P.M.   
                   DAVIS.......................19  SSE AT 10:59 P.M. RMY 21
FASTEST MILE FOR YESTERDAY.....................15  SSE AT 10:58 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE..................15  SSE AT 11:22 P.M.     
MAXIMUM 2-MINUTE DAVIS AVERAGE.................15  SSE AT 10:53 P.M.    
AVERAGE WIND SPEED AND DIRECTION..............9.1  
                   ASOS.......................9.2   
                   DAVIS......................8.1  E [090 Deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.... 0.01  DEPARTURE.....-0.15
                         ASOS...............0.01
TOTAL PRECIPITATION FOR THE MONTH...........1.07  DEPARTURE.....-2.07
                         ASOS...............1.05
TOTAL PRECIPITATION FOR THE YEAR...........35.21  DEPARTURE.....-7.00 
                         ASOS................N/A ***
*** ASOS annual total not available due to erroneous readings
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
 
10/1  55/51/53/-4/..../000/00               39 NE  RMY N/A
10/2  51/47/49/-8/..../000/00               40 NE  RMY 43
10/3  51/45/48/-8/..../000/00               38 NE  RMY N/A
10/4  55/49/52/-4/0.00/474/68               35 E   RMY 40
10/5  59/46/53/-3/T/125/18                  21 NE  RMY 20
10/6  68/43/56/+1/0.00/663/96               17 NW  RMY 17
10/7  69/46/58/+3/0.00/640/93               20 W   RMY 20
10/8  63/49/56/+2/0.00/678/99               21 S   RMY N/A
10/9  68/50/59/+5/0.27/130/19               45 S   RMY 49
10/10 59/44/53/-2/0.00/673/99               33 NNW RMY N/A
10/11 67/46/57/+4/0.00/582/86               26 SW  RMY 28
10/12 76/50/63/+10/0.00/647/96              22 SSW RMY 24
10/13 70/55/63/+10/0.27/208/31              23 S   RMY 24
10/14 66/46/56/+4/0.00/428/64               26 W   RMY 29
10/15 60/41/51/-1/0.00/659/99               20 SW  RMY 27
10/16 60/44/52/+1/T/471/71                  31 W   RMY 34
10/17 54/35/45/-6/T/482/73                  30 WNW RMY 33
10/18 45/28/37/-14/0.00/480/73              24 NNW RMY 25
10/19 47/26/37/-13/0.00/648/99              25 SSW RMY 30 
10/20 65/43/54/+4/0.00/.../..               28 SW  RMY 28
10/21 59/51/55/+5/0.01/.../..               18 SSE RMY 21 
 
10/22 low since midnight is 51F; normal low is now 41F 
 
DAILY RECORDS FOR OCTOBER 2015
 
-NONE SO FAR.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 22
HIGH 85F IN 1979
LOW 22F IN 1940
PRECIP 2.38 INCHES IN 2014
SNOWFALL TRACE IN 1969, 2010
PEAK GUST 67 MPH ESE IN 1988
 
RECORDS FOR OCTOBER 23
HIGH 82F IN 1947
LOW 24F IN 1969
PRECIP 3.66 INCHES IN 2014
SNOWFALL 3.0 INCHES IN 1891
PEAK GUST 78e MPH NW IN 1941
 
TODAY'S REPORT PREPARED BY: Robert Skilling