BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JUNE 13, 2005
ALL TIMES ARE IN EASTERN DAYLIGHT TIME [unless otherwise noted]

UNUSUALLY LONG SPELL OF OPPRESSIVE HUMIDITY FOR EARLY JUNE...

Our prolonged period of oppressive humidity is most unusual for early
June and yesterday, for a good part of the day, the dewpoint was between
73 and 76 degrees, more like a day in July or August. A late afternoon
light thundershower left only 0.01 of an inch of rain.

After a very warm overnight low of 71 the thermometer is again back
up to 87 degrees early this afternoon with dewpoints in the low 70's.

June is now averaging 6 degrees warmer than normal daily.

Today's observations:

6/13/2005 MON

8 a.m. overcast with high clouds and visibility 10 miles and hazy;
temp. 74; dewpoint 68; wind sw at 10 mph; six hourly min. temp.
71 deg.; 24-hourly precip. 0.01 inch

BHO SA 100 SCT E130 BKN 150 BKN 200 OVC 10 106/74/68/2309/984/ DENSE CI PRSNT
BRGHT SPTS IOVC SUN OCNL VSB HAZY VSBY NE 12/ 8/072 57003 6000/
10074 20071

11 a.m. high mostly thin overcast with 8 miles visibility in increasing
haziness, temp. 83; dewpoint 72; wind west at 09 mph; trace of rain
past 3 hours...

BHO SA 1455 150 SCT 180 -BKN 250 -OVC 8 095/83/72/2608/981/ AC CHAOTIC
HAZY HZ INCRSNG/ 8/091 58011 6000/

2 p.m. high thin overcast with 8 miles visibility and very hazy;
temp. 85; dewpoint 72; wind west at 07 mph; six hourly max. temp.
86 deg; six hourly precip. a trace

BHO SA 1755 120 SCT 150 SCT 180 -BKN 250 -OVC 8 080/85/72/2606/977/
FEW CUFRA/CU FRMG AC CHAOTIC BINOVC HAZY/ 8/191 58015 6000/ 10086 20074

WEATHER SUMMARY FOR SUNDAY, JUNE 12:

TEMPERATURE (DEGREES F)
MAX.....87   NORMAL.....74    ASOS.....86F AT 3:53 P.M. *
MIN.....67   NORMAL.....55    ASOS.....66F AT 5:32 A.M.
MEAN....77   NORMAL.....65
DEPARTURE FROM 30-YEAR NORMAL.....+12
TOTAL DEPARTURE FOR THE MONTH.....+77  (+6.2 DEGREES/DAY)

* Maximum temp. in Hazen shelter 86.8 deg.

HEATING DEGREE DAY UNITS...
TOTAL HEATING UNITS FOR YESTERDAY........0   DEP.....-3
TOTAL HEATING UNITS FOR THE MONTH.......16   DEP....-29
TOTAL HEATING UNITS FOR THE SEASON....6362   DEP....+20
TOTAL HEATING UNITS FOR LAST SEASON...6278   DIF....+84

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY........25  SW AT 4:49 P.M.
                   AEROVANE.........26  SW AT 4:49 P.M.
                   ASOS.............24  SW AT 4:50 P.M.
                   DAVIS............24 SSW AT N/A

FASTEST MILE FOR YESTERDAY..........17  SW AT 4:50 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE.......17  SW AT 4:57 P.M.
MAXIMUM 1-MINUTE DAVIS AVERAGE......17 SSW AT 6:35 P.M.

AVERAGE WIND SPEED AND DIRECTION...11.1  SW
                   ASOS............11.3  SW
                   DAVIS...........11.2  SW [220 deg]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EDT)
TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.01   DEPARTURE....-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.53   DEPARTURE....-1.03
                         ASOS..............0.52
TOTAL PRECIPITATION FOR THE YEAR..........30.27   DEPARTURE....+7.12
                         ASOS.............29.14


PRELIMINARY CLIMATE SUMMARY FOR JUNE 2005......CALENDAR DAY DATA
DATA REPORTED:
DATE  MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST

AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available

6/1  64/46/55/-7/0/570/63                 22 MPH S
6/2  75/48/62/0/0/689/76                  22 MPH S
6/3  77/49/63/+1/0/508/56                 29 MPH S
6/4  83/58/71/+8/0/781/86                 15 MPH SW
6/5  88/55/72/+9/0/782/86                 27 MPH N
6/6  76/52/64/+1/0/382/42                 30 MPH SSE
6/7  87/61/74/+10/0/802/88                33 MPH SSW
6/8  89/65/77/+13/0.34/784/86             30 MPH N    TSTM
6/9  79/65/72/+8/0.18/.../..              28 MPH WSW  TSTM
6/10 81/66/74/+10/0/.../..                36 MPH SSW  Aero 38 MPH SSW
6/11 88/66/77/+12/0/.../..                26 MPH SSW
6/12 87/67/77/+12/0.01/.../..             25 MPH SW   TSTM

6/13 morning low temp. 71 deg; normal is 55 deg.

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

RECORDS FOR JUNE 13
HIGH      93F IN 1988
LOW       43F IN 1982
PRECIP    6.07 INCHES 1998
PEAK GUST 69 MPH N IN 1956

RECORDS FOR JUNE 14
HIGH 93F IN 1956
LOW 41F IN 1912
PRECIP 1.49 INS 1896
PEAK GUST 55 MPH WNW IN 1958

TODAY'S REPORT BY: Robert Skilling