BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
THURSDAY SEPTEMBER 18 2003

Corrected for date in subject line.

DISCUSSION AT 2 P.M.

CLOUDS AND WIND INCREASING AS HURRICANE ISABEL ROCKS NORTH CAROLINA...

Clouds continue to increase and thicken early this afternoon. There appears
to be a more solid mid level deck off the south moving northward. Winds
have been increasing into this afternoon with gusts reaching to 30-35mph.
The pressure has finally begun to fall after peaking around 30.46 earlier
this morning. Quite a pressure gradient is setting up. Winds will likely
continue to increase through tonight.


TODAY'S OBS...

9/18/2003 THU

8 a.m.
BHO SA 1155 150 SCT E200 -BKN 250 -OVC 50 303/61/57/0511/042/ FEW BINOVC
PATCHES ACSL ALQDS THN K LYR ALNG HRZN ALQDS HAZY/ 8/041/ 51010 10061 20058

2 p.m.
BHO SA 1755 35 SCT E150 BKN 200 BKN 250 -BKN 60 307/66/56/0715G22/044/
ACSL DSNT S PK WND 0727/14/ 8/541/ 56006 10069 20061


THE DATA RECORDED FOR WEDNESDAY SEPTEMBER 17...
TEMPERATURES ARE CALENDAR DAY MIDNIGHT TO MIDNIGHT
EASTERN STANDARD TIME

MAX:      73      MIN:      55
ASOS MAX: 73      ASOS MIN: 55
MEAN:     64      [ + 2 ]

AVERAGE HIGH/LOW/MEAN: 71/53/62

TOTAL DEPARTURE FOR SEPTEMBER TO DATE: - 3 deg. [ - 0.2 per day ]

PRECIPITATION UPDATED ON 9/18 at 8 A.M.
24 HRS ENDING 8 A.M..........0.00 IN
TOTAL FOR ASOS...............0.00 IN
TOTAL FOR SEPT...............1.73 IN [STANDARD GAGE ]
TOTAL FOR SEPT. .. ASOS ]    1.68 IN
SEPT. DEPARTURE TO DATE:....-0.72 IN [STANDARD GAGE ]

TOTAL 2003 PRECIPITATION..39.47 IN
DEPARTURE FROM AVERAGE....+4.47 IN

WIND DATA FOR WEDNESDAY SEPTEMBER 17 2003

PEAK GUST ASOS: 20 MPH ENE AT 2:06 P.M. EDT
PEAK GUST AERO: 22 MPH NNW AT 3:49 A.M. EDT
PEAK GUST 420C: 20 MPH   E AT 2:05 P.M. EDT


SEPTEMBER 2003 PRELIMINARY DATA....ALL IS CALENDAR DAY DATA....
BELOW IS THE ORDER OF DATA REPORTED....
MAX/MIN/MEAN/DEP/PRECIP/SUNSHINE/ OFFICIAL 420C WIND GUST
Aero = Aerovane recording wind system gust when significant
TSTM = thunderstorm day
.../.. no sunshine data yet available


9/1  67/56/62/-5/0.02/000/00/  18 MPH SW
9/2  62/53/58/-8/0.63/000/00/  21 MPH NE
9/3  69/56/63/-3/0/274/35      21 MPH ESE
9/4  72/60/66/0/0.35/000/00    30 MPH SSW
9/5  74/58/66/+1/0/483/62      18 MPH NW
9/6  74/53/64/-1/0/737/95      17 MPH WSW
9/7  78/54/66/+1/0/727/94      18 MPH N
9/8  69/55/62/-3/0/709/92      24 MPH NNE
9/9  64/50/57/-7/0/484/63      29 MPH NE
9/10 72/47/60/-4/0/750/98      18 MPH NNW
9/11 71/56/64/0/0/709/93       28 MPH NE
9/12 67/56/62/-1/0/654/86      23 MPH NE
9/13 72/57/65/+2/0/288/38      21 MPH ENE
9/14 80/62/71/+8/0.03/143/19   18 MPH S
9/15 78/63/71/+9/T/.../..      23 MPH SSE
9/16 77/59/68/+6/0.70/172/23   27 MPH SSE
9/17 73/55/64/+2/0/.../..      20 MPH E
9/18 Morning low 58 degrees


OUR DAILY EXTREMES...

RECORDS FOR SEPTEMBER 18
HIGH   88F IN 1906
LOW    36F IN 1919
PRECIP  4.25 INCHES IN 1996
PEAK GUST  77e MPH WNW IN 1948

RECORDS FOR SEPTEMBER 19
HIGH   87F IN 1906,1983
LOW    37F IN 1929
PRECIP  3.69 INCHES IN 1936
PEAK GUST  48 MPH NE IN 1972

e = estimated gust

Today's Report by: Matthew Douglas