Suppression Forecast
Issued by NWS Sterling, VA

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000
FNUS71 KLWX 181158
FWSLWX

SPOT FORECAST FOR SPOTSY SUMMER FIELDS...NPS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
758 AM EDT THU SEP 18 2014

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

.DISCUSSION...

A WEAK COLD FRONT WILL PASS THROUGH THE REGION TODAY. AN ISOLATED
SHOWER CANNOT BE RULED OUT...MAINLY THIS AFTERNOON. ANY SHOWER COVERAGE
WILL BE ISOLATED AND MOST OF THE TIME WILL BE DRY. ALSO...PRECIPITATION
AMOUNTS WILL BE LIGHT RANGING FROM A TRACE TO PERHAPS A FEW HUNDREDTHS
OF AN INCH.

HIGH PRESSURE WILL BUILD TOWARD THE REGION FRIDAY BEFORE MOVING OFF THE
COAST DURING THE WEEKEND. DRY CONDITIONS ARE LIKELY FRIDAY...SATURDAY
AND MOST OF SUNDAY. HOWEVER...AN EASTERLY COMPONENT TO THE LOW-LEVEL
FLOW WILL KEEP RH VALUES HIGHER. A COLD FRONT WILL PASS THROUGH THE REGION
SUNDAY NIGHT...BRINGING THE CHANCE FOR SHOWERS. HIGH PRESSURE WILL BUILD
IN BEHIND THE FRONT EARLY NEXT WEEK...BRINGING DRIER CONDITIONS.
HOWEVER...EXACT TIMING OF THE DRIER AIR IS STILL UNCERTAIN THIS FAR OUT IN
THE FORECAST PERIOD.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). ISOLATED SHOWERS
                    IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........52 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS.
CWR.................10 PERCENT...INCREASING TO 20 PERCENT.
MIXING HEIGHT.......0-1400 FT AGL...INCREASING TO 5500-6800 FT AGL.
TRANSPORT WINDS.....WEST 1 TO 5 MPH.

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........67  67  67  67  66  65  65
WEATHER COV.....    ISO ISO ISO ISO ISO ISO
WEATHER TYPE....    RW  RW  RW  RW  RW  RW
TEMP............70  73  75  76  77  76  76
RH..............68  62  58  54  52  54  54
20 FT WIND DIR..S   SE  NE  N   NE  E   SE
20 FT WIND SPD..1   1   1   1   1   2   2
20 FT WIND GUST.                    4   4
CWR.............10  20  20  20  20  20  20

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). ISOLATED SHOWERS
                    EARLY IN THE EVENING.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS.
CWR.................20 PERCENT...DECREASING TO 10 PERCENT IN THE
                    EVENING.
MIXING HEIGHT.......3600-5100 FT AGL...DECREASING TO 200-700 FT
                    AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 1 MPH...BECOMING NORTH 1 TO 5
                    MPH.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........66  68  69  68  67  66  65  64  63  64  65  67
WEATHER COV.....ISO ISO
WEATHER TYPE....RW  RW
TEMP............74  71  66  64  63  62  61  60  60  59  59  58
RH..............59  66  81  87  87  90  90  90  87  87  87  90
20 FT WIND DIR..SE  E   E   E   NE  NE  NE  N   N   N   N   N
20 FT WIND SPD..2   2   2   2   2   2   2   2   2   2   2   2
20 FT WIND GUST.4   4   4   4   4   4   4   4   4   4   4   4
CWR.............20  20  10  10  10  10  10  10  10  10  10  10

.FRIDAY...

SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT).
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........61 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING EAST 5 TO 6
                    IN THE AFTERNOON.
CWR.................10 PERCENT.
MIXING HEIGHT.......800-2400 FT AGL...INCREASING TO 5000-5500 FT
                    AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 9 MPH.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........68  69  70  70  71  71  72  72  73  70  66  62
WEATHER COV.....
WEATHER TYPE....
TEMP............58  58  59  62  65  67  69  70  71  72  71  71
RH..............90  90  87  81  73  70  66  63  61  61  66  66
20 FT WIND DIR..N   N   N   N   NE  NE  NE  NE  NE  NE  E   E
20 FT WIND SPD..3   3   4   4   4   5   5   5   5   5   5   5
20 FT WIND GUST.4   4               7   7   7   7   7   7   7
CWR.............10  10  10  10  10  10  10  10  10  10  10  10

$$
FORECASTER...LASORSA
REQUESTED BY...STEPHEN PAULL
TYPE OF REQUEST...PRESCRIBED
.TAG 20140918.SPOTS.02/LWX






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