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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, AUGUST 4, 2014  
ALL TIMES ARE IN EASTERN STANDARD TIME

FOGGY, HUMID START TRANSITIONS TO SUN AND CLOUDS
WITH A WARMER START TO THE WEEK

Yesterday's remarkably low wind speeds have a special
place in our history now, with one of the lowest 24 hour
average speeds seen in quite some time. Our midnight
to midnight average of 3.9 MPH from the ENE was well
below our historical station average.

Our peak gust of just 10 knots, or 12 MPH from the SE
was our lowest peak gust we could find on record 
since 2001, along with the lowest fastest mile of
just 8 MPH. 

Today fog burned during the 7:00 AM EST observation
revealing partly cloudy skies through most of the 
morning. Small and moderate cumulus have mostly
dominated the sky with very hazy conditions. 

JULY 2014 PRELIMINARY STATS 

TEMPERATURE [deg. F]
 
Av. Max. 80.8 
Av. Min. 63.5 
Mean     72.2 [+0.3] 
24-hour corr. mean: 72.0
Max. temp. for month: 91 on 3rd  
Min. temp. for month: 55 on 5th 
Total heating degree day units: None 
Total cooling degree day units: 228
Total seasonal cooling   units: 337 [-14] 
Season [1/1 thru 7/31]

PRECIPITATION [ins.]

Total: 5.08 [+1.06]
Greatest one calendar day: 2.48 [4th] *
Greatest in 24 hours 2.73 [4-5th]   
* new record for date; previous was 1.78 in 1950 

WIND 
Av. wind speed:       11.4 MPH  
Av. corr. wind speed: 11.8 MPH 
Prevailing direction: S @ 27% possible

SUNSHINE 
Total astronomical minutes: 17566 of possible 27729 or 63%  
Total Campbell Stokes card minutes: 16898 of possible 26682 or 63%  

Today's Observations:

7 A.M.
Weather: Partially obscured by fog, broken altocumulus 
Temperature: 65F; Dew Point: 64F; Wind: WSW at 7 kts
Sea-level pressure: 30.06 ins. Hg, rising then rising more quickly    
Visibility: 9 miles, 15 miles NE, light fog in all directions
6-hr max temp: 65F
6-hr min temp: 64F
24-hr precip: Trace
BHO SA 1155 -X E140 BKN 9 180/65/64/2507/006/ LGT FG ALDS VSBY NE 
15 MI/ 8//30 53005 MANUAL 6000/ 10065 20064

10 A.M.  
Weather: Scattered moderate cumulus, few cumulus fractus
in all directions 
Temperature: 75F; Dew Point: 65F; Wind: estimated WSW at 5 kts 
Sea-level pressure: 30.06 ins. Hg, decreasing slightly    
Visibility: 20 miles, hazy 
BHO SA 1455 35 SCT 20 179/75/65/E2505/006/ FEW CUFRA ALQDS HAZY 
WND LGT/ 8/200 55001

1 P.M.  
Weather: Scattered cumulus, few cumulus fractus in all directions
Temperature: 80F; Dew Point: 62F; Wind: W at 7 kts,
Sea-level pressure: 30.04 ins. Hg, falling steadily
Visibility: 20 miles, hazy in all directions
6-hr max temp: 81F  
6-hr min temp: 65F  
BHO SA 1755 45 SCT 25 172/80/62/2607/004/ FEW CUFRA ALQDS HAZY/ 
8/100 57007 10081 20065

WEATHER SUMMARY FOR SUNDAY, AUGUST 3, 2014  

TEMPERATURE (DEGREES F)
MAX.....71    NORMAL.....81
MIN.....60    NORMAL.....63
MEAN....66    NORMAL.....72

DEPARTURE FROM 30-YEAR NORMAL.........................-6
TOTAL DEPARTURE FOR THE MONTH........................-11 [-3.7 DEGREE/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............1   DEPARTURE..........-6
TOTAL COOLING UNITS FOR THE MONTH.............11   DEPARTURE.........-11
TOTAL COOLING UNITS FOR THE SEASON...........348   DEPARTURE.........-25
TOTAL COOLING UNITS LAST SEASON TO DATE......502   DIFFERENCE.......-154

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY..................12  SE   AT  8:08 P.M. *        
                   ASOS.......................12  SE   AT  8:09 P.M.   
                   DAVIS......................11  SE   AT  8:05 P.M. RMY 13       
FASTEST MILE FOR YESTERDAY....................8   SE   AT  8:11 P.M.              
MAXIMUM 2-MINUTE ASOS AVERAGE.................9   SE   AT  8:17 P.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE................9   ESE  AT  8:06 P.M.               
AVERAGE WIND SPEED AND DIRECTION..............3.9 SE 		
                   ASOS.......................4.4 
                   DAVIS......................4.0 ENE [72 deg.]   
* last of several occurrences...

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE  DEPARTURE..........-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR AUGUST.............0.12  DEPARTURE..........-0.33	    
                         ASOS..............0.10  
TOTAL PRECIPITATION FOR THE YEAR..........29.75  DEPARTURE..........-1.69
                         ASOS.............29.66 

PRELIMINARY CLIMATE SUMMARY FOR JULY-AUGUST 2014 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  85/66/76/+6/0.00/695/76              31 SSW RMY 36
7/2  89/69/79/+9/T/639/70                 33 SSW RMY 38 
7/3  91/68/80/+9/0.05/611/67              29 W   RMY 30  TSTM
7/4  72/61/67/-4/2.48/027/03              28 N   RMY N/A TSTM
7/5  77/55/66/-5/0.27/738/81              36 NW  RMY N/A 
7/6  83/61/72/+1/0.00/892/98              29 SW  RMY 33
7/7  85/65/75/+4/T/563/62                 33 SW  RMY 38  TSTM [NO RAIN] 
7/8  89/70/80/+8/0.00/763/84              31 SW  RMY 38 
7/9  86/70/78/+6/0.00/779/86              28 SSW RMY N/A	
7/10 80/65/73/+1/0.00/597/66              16 NW  RMY N/A
7/11 76/62/69/-3/0.00/732/81              22 NE  RMY N/A 
7/12 85/60/73/+1/0.00/849/94              21 S   RMY 25 
7/13 82/64/73/+1/0.01/676/75              31 S   RMY 35
7/14 83/69/76/+4/0.54/207/23              25 S   RMY 27
7/15 82/70/76/+4/0.02/135/15              26 S   RMY 29 TSTM
7/16 73/65/69/-3/0.98/000/00              27 SSW RMY 32 TSTM
7/17 79/62/71/-1/T/573/64                 15 WSW RMY 17 
7/18 80/60/70/-2/0.00/822/92              15 NW  RMY 16
7/19 77/63/70/-2/0.00/054/06              13 E   RMY 14 
7/20 72/60/66/-6/T/312/35                 16 ENE RMY 16
7/21 76/59/68/-4/0.00/667/75              16 E   RMY 19
7/22 88/63/76/+4/0.00/816/92              22 SSW RMY 25 
7/23 88/68/78/+6/0.00/770/87              29 S   RMY 32
7/24 74/63/69/-3/0.01/291/33              18 ENE RMY 18
7/25 80/56/68/-4/0.00/811/92              18 NW  RMY N/A       
7/26 82/63/73/+1/0.00/616/70              28 SSW RMY 32
7/27 75/65/70/-2/0.61/097/11              28 SSE RMY 30 TSTM 
7/28 81/65/73/+1/0.11/552/63              36 S   RMY 40 TSTM
7/29 78/60/69/-3/0.00/751/86              22 WNW RMY 24
7/30 78/59/69/-3/0.00/749/86              16 W   RMY 18  
7/31 80/61/71/-1/0.00/782/90              27 S   RMY 29  

8/1  86/63/75/+3/0.00/.../..              25 S   RMY 29
8/2  68/59/64/-8/..../.../..              21 ESE RMY 22
8/3  71/60/66/-6/..../.../..              12 SE  RMY 12

8/4  morning low of 63F; the normal low is now 63F
 
DAILY RECORDS FOR JULY 2014:

7/4  NEW DAILY RECORD RAINFALL OF 2.48 ins;
     surpasses previous record of 1.78 ins. in 1950
7/16 NEW DAILY RECORD RAINFALL OF 0.98 ins;
     surpasses previous record of 0.89 ins. in 1919

DAILY RECORDS FOR AUGUST 2014:
None so far.

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

RECORDS FOR AUGUST 4
HIGH 95F IN 1928
LOW 48F IN 1900
PRECIP 1.68 INS IN 1983
PEAK GUST 48 MPH SW IN 1974

RECORDS FOR AUGUST 5
HIGH 98F IN 1955
LOW 48F IN 1929,1972
PRECIP 3.03 INCHES IN 1893
PEAK GUST 60e MPH SW 1977

TODAY'S REPORT PREPARED BY: Brian Fitzgerald