Suppression Forecast
Issued by NWS Sterling, VA

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000
FNUS71 KLWX 291255
FWSLWX

SPOT FORECAST FOR SUMMERS MOUNTAIN RX...THE NATURE CONSERVANCY
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
855 AM EDT WED APR 29 2015

FORECAST IS BASED ON IGNITION TIME OF 0850 EDT ON APRIL 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL PUSH SOUTH OF THE MID
ATLANTIC TODAY...AND HIGH PRESSURE WILL MOVE INTO THE AREA. LOW
PRESSURE WILL IMPACT THE REGION THURSDAY AND FRIDAY...WITH CHANCES
FOR SHOWERS. HIGH PRESSURE AND DRY WEATHER RETURNS FOR THE WEEKEND.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). ISOLATED SHOWERS
                    LATE.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS...BECOMING SOUTH
                    AROUND 5 MPH IN THE AFTERNOON.
CWR.................20 PERCENT.
MIXING HEIGHT.......0-1500 FT AGL...INCREASING TO 6200-7300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 1 TO 2 MPH...BECOMING SOUTHWEST 3 TO
                    8 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (0-49000 KNOT-FT).

TIME (EDT)       8 AM   10 AM  NOON   2 PM   4 PM
SKY (%)..........45     38     42     58     67
WEATHER COV......                            ISOLTD
WEATHER TYPE.....NONE   NONE   NONE   NONE   RNSHWR
TEMP.............45     52     60     67     64
RH...............68     56     46     36     43
20 FT WIND.......N 2    SE 2   SW 3   S 4    S 4
20 FT WIND GUST..4      4      7      7      7
CWR..............10     10     10     20     20
VRATE KT-FT/1000.0      12     37     49     46

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). A SLIGHT CHANCE
                    OF SHOWERS EARLY IN THE EVENING...THEN A CHANCE
                    OF SHOWERS EARLY IN THE EVENING. SHOWERS LIKELY
                    LATE. PATCHY FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS.
CWR.................20 PERCENT...INCREASING TO 60 PERCENT.
MIXING HEIGHT.......4600-6400 FT AGL...DECREASING TO 400-1500 FT
                    AGL.
TRANSPORT WINDS.....WEST 2 TO 9 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (800-42300 KNOT-FT).

TIME (EDT)       6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%)..........75     85     90     91     89     95
WEATHER COV......S CHC  CHANCE CHANCE CHANCE CHANCE LIKELY
WEATHER TYPE.....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP.............65     63     55     52     49     47
RH...............45     54     74     80     86     89
20 FT WIND.......S 3    SW 3   SW 3   W 3    W 3    W 2
20 FT WIND GUST..7      4      4      4      4      4
CWR..............20     40     40     40     40     60
VRATE KT-FT/1000.42     36     24     12     4      1

.THURSDAY...

SKY/WEATHER.........CLOUDY (95-100 PERCENT). PATCHY FOG EARLY IN
                    THE MORNING. SHOWERS LIKELY.
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........51 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
                    AFTERNOON.
CWR.................60 PERCENT...INCREASING TO 70 PERCENT IN THE
                    MORNING.
MIXING HEIGHT.......400-1300 FT AGL...INCREASING TO 6100-7100 FT
                    AGL.
TRANSPORT WINDS.....SOUTH 1 TO 5 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (500-29500 KNOT-FT).

TIME (EDT)       6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%)..........98     97     98     98     99     99
WEATHER COV......LIKELY LIKELY LIKELY LIKELY LIKELY LIKELY
WEATHER TYPE.....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP.............45     44     48     53     57     59
RH...............96     96     86     71     59     53
20 FT WIND.......NW 2   NW 2   W 2    SW 2   SW 2   S 3
20 FT WIND GUST..4      4      4      7      7      7
CWR..............60     70     70     70     70     70
VRATE KT-FT/1000.1      1      15     30     24     20

$$
FORECASTER...STRUCKMANN
REQUESTED BY...SAM LINDBLOM
TYPE OF REQUEST...PRESCRIBED
.TAG 20150429.SUMME.01/LWX



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