BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MAY 24, 2006
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Temperatures for May continue to average cooler than
normal, now by 3 degrees. And, this continues to be 
the wettest May on record with 9.45 inches of rainfall. 
 
Today's observations:
 
7 A.M.
Weather: Broken clouds but clearing
Temperature: 53F, Dew point: 43F, Wind: WNW at 13 mph  
Sea-level pressure: 29.94, rising
Visibility: 75 miles
BHO SA 1155 90 SCT E100 BKN 150 BKN 250 BKN  75 137/53/43/2911/994/ 
AC CHAOTIC VIRGA DSNT E-SE/ 8/091 53010 10053 20046
 
10 A.M.
Weather: Broken clouds
Temperature: 63F, Dew point: 43F, Wind: WNW at 13 mph  
Sea-level pressure: 29.94, steady
Visibility: 75 miles
BHO SA 1455 E42 BKN 50 BKN  75 137/63/43/3011/994/ MDT CU
8/200 50000 
 

WEATHER SUMMARY FOR TUESDAY, MAY 23

 
TEMPERATURE (DEGREES F)
MAX....62   NORMAL.....69   HAZEN....62.0 AT  3:32 P.M.
MIN......40   NORMAL.....49   HAZEN....40.1 AT  4:00 A.M.
MEAN....51   NORMAL...59   
DEPARTURE FROM 30-YEAR NORMAL......-8
TOTAL DEPARTURE FOR THE MONTH.....-62 (-2.9 DEGREES/DAY)
 
HEATING DEGREE DAYS
HEATING DEGREE DAY UNITS FOR YESTERDAY.....14   DEPARTURE....+7
TOTAL HEATING UNITS FOR THE MONTH.................281   DEPARTURE....+62
TOTAL HEATING UNITS FOR THE SEASON............5700   DEPARTURE...-552
TOTAL HEATING UNITS LAST SEASON TO DATE.6252   DIFFERENCE..-558
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY........32  W AT 2:24 P.M.  *
                   AEROVANE....................................33 W AT 9:42 A.M.  
                   ASOS.............................................  34 W AT 9:42 A.M.  
                   DAVIS............................................. 35  W AT 9:42 A.M. 
* last of several occurrences...
 
FASTEST MILE FOR YESTERDAY...................n/a 
MAXIMUM 2-MINUTE ASOS AVERAGE..........24 WNW AT 5:22 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.........27 WSW AT 2:46 P.M.  
 
AVERAGE WIND SPEED AND DIRECTION....n/a MPH W
ASOS....................................................................15.5 MPH  [270 deg]
DAVIS...................................................................16.3 MPH [270 deg] 

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE....-0.12   
                         ASOS........................................................0.00
TOTAL PRECIPITATION FOR THE MONTH.............9.45   DEPARTURE....+6.64
                         ASOS........................................................9.44
TOTAL PRECIPITATION FOR THE YEAR................21.35   DEPARTURE....+0.59
                         ASOS........................................................21.01

PRELIMINARY CLIMATE SUMMARY FOR MAY 2006......CALENDAR DAY DATA
DATA REPORTED:
DATE  MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
5/1  53/42/48/-4/0.03/245/29          45 NNE
5/2  44/41/43/-9/1.36/000/00          39 N
5/3  52/43/48/-5/0.30/000/00          31 N  
5/4  72/51/62/+9/0.00/554/65         22 WNW 
5/5  81/55/68/+15/0.00/666/78      24 WSW
5/6  73/49/61/+7/T/248/29              31 NW
5/7  66/42/54/0/746/87                   30 NW
5/8  63/45/54/0/0/629/73                22 NE 
5/9  52/44/48/-7/1.50/000/00         50 N  
5/10 49/44/47/-8/0.32/000/00        43 NE 
5/11 54/46/50/-5/0.03/009/01        25 NE
5/12 51/46/49/-7/0.34./000/00       28 NE
5/13 52/44/48/-8/2.39/000/00         32 N
5/14 48/44/46/-11/1.93/000/00       38 NE
5/15 51/46/49/-8/0.27/000/00         29 NNE
5/16 53/47/50/-7/0.41/000/00         36 N
5/17 69/48/59/+2/0/.../..                    32 S
5/18 75/50/63/+5/0/.../..                    37 S
5/19 62/49/56/-2/0.37/.../..               39 SSW  TSTM
5/20 66/47/57/-1/0/.../..                     42 SSW
5/21 68/40/54/-5/0.20/.../..               74 WSW  TSTM
5/22 65/39/52/-7/0/.../..                    37 W
5/23 62/40/51/-8/0/.../..                    32 W
 
5/24 morning low temp. 46 deg.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and 
wind records back to 1940 (e = estimated):
 
n/a
 
Today's Report by: Robert Skilling