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241
FNUS71 KPHI 181028
FWSPHI

SPOT FORECAST FOR DARRONES SILVERSPRAY...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
628 AM EDT FRI APR 18 2014

FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON APRIL 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAKENING RIDGE OF HIGH PRESSURE WILL REMAIN ACROSS THE FORECAST
AREA TODAY. A COLD FRONT WILL CROSS THE REGION TONIGHT. MORE HIGH
PRESSURE WILL BUILD DOWN FROM CANADA AND REMAIN ACROSS THE AREA
THIS WEEKEND AND INTO MONDAY NIGHT. ANOTHER DISTURBANCE WILL
AFFECT THE REGION TUESDAY INTO WEDNESDAY.

CONFIDENCE BELOW AVERAGE ON WIND DIRECTION THIS MORNING - MIDDAY.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........47 AT IGNITION...MAX 55.
RH..................45 PERCENT AT IGNITION...MIN 31 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 6 MPH AT
                    IGNITION...OTHERWISE LIGHT AND VARIABLE
                    WINDS...BECOMING SOUTH 5 TO 7 MPH LATE IN THE
                    MORNING.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
LAL.................NO TSTMS.
WIND SHIFT..........
SURFACE WINDS.......LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO
                    7 MPH LATE IN THE MORNING.
MIXING HEIGHT.......2800 FT AGL AT IGNITION...OTHERWISE 1800-3700
                    FT AGL.

TIME (EDT)          11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).............52  54  57  49  51  55  57
WEATHER COV.........
WEATHER TYPE........
TSTM COV............
TEMP................47  48  51  53  52  54  55
RH..................45  44  39  36  38  34  31
20 FT WIND DIR......SW  SW  SW  SW  S   S   S
20 FT WIND SPD......6   5   6   6   5   6   7
20 FT WIND GUST.....                    10  10
SURFACE WND DIR.....SW  SW  SW  SW  S   S   S
SURFACE WND SPD.....6   5   6   6   5   6   7
SURFACE WND GST.....                    10  10
MIX HGT (KFT).......2.8 3.1 3.4 3.7 3.4 3.2 2.9
CWR.................0   0   0   0   0   0   0
CHC OF PCPN (%).....0   0   0   0   0   0   0
LAL.................1   1   1   1   1   1   1

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY...THEN BECOMING PARTLY CLOUDY.
TEMPERATURE.........MIN 36.
RH..................MAX 79 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 6 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT AND VARIABLE.
CWR.................10 PERCENT.
CHANCE OF PCPN......10 PERCENT.
LAL.................NO TSTMS.

TIME (EDT)          6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).............60     70     55     46     32     22
WEATHER COV.........
WEATHER TYPE........NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV............
TEMP................53     49     45     42     40     39
RH..................35     46     58     70     79     79
20 FT WIND..........S 6    S 1    W 0    NW 1   W 1    NW 0
20 FT WIND GUST.....10
CWR.................0      10     10     10     10     10
CHC OF PCPN (%).....0      10     10     10     10     10
LAL.................1      1      1      1      1      1

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........MAX 62.
RH..................MIN 24 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING NORTH 7 TO
                    12 MPH.
CWR.................10 PERCENT.
CHANCE OF PCPN......10 PERCENT.
LAL.................NO TSTMS.

TIME (EDT)          6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).............22     33     31     29     27     25
WEATHER COV.........
WEATHER TYPE........NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV............
TEMP................36     42     49     55     59     61
RH..................85     67     48     35     28     25
20 FT WIND..........NW 2   NW 8   N 10   N 12   N 12   N 10
20 FT WIND GUST.....5      10     15     15     15     15
CWR.................10     10     10     10     10     10
CHC OF PCPN (%).....10     10     10     10     10     10
LAL.................1      1      1      1      1      1

$$
FORECASTER...DRAG
REQUESTED BY...MATT BOSS
TYPE OF REQUEST...PRESCRIBED
.TAG 20140418.DARRO.01/PHI







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