081 
FNUS71 KPHI 210742
FWSPHI

SPOT FORECAST FOR MARSHY HOPE...MARYLAND FORES SERVICE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
342 AM EDT THU APR 21 2016

FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON APRIL 21. 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
THOUGH GUSTY WINDS ARE EXPECTED FOR MUCH OF THE DAY IN DELMARVA,
RELATIVE HUMIDITY VALUES SHOULD STAY ABOVE CRITICAL THRESHOLDS.

HIGH PRESSURE WILL CONTINUE TO MOVE SOUTHEAST OFF THE MIDDLE
ATLANTIC COAST THURSDAY. MEANWHILE, LOW PRESSURE IN THE UPPER
MISSISSIPPI VALLEY WILL MOVE INTO THE SAINT LAWRENCE VALLEY, LEADING
TO A COLD FRONTAL PASSAGE ACROSS OUR AREA FRIDAY NIGHT. CANADIAN
HIGH PRESSURE WILL SLOWLY MOVE OVER OUR REGION THIS WEEKEND. A
COMPLEX FRONTAL BOUNDARY WILL SETUP NEAR OUR AREA EARLY NEXT WEEK.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. 
MAX TEMPERATURE.....AROUND 74. 
MIN HUMIDITY........41 PERCENT. 
WIND (20 FT)........LIGHT WINDS...BECOMING SOUTH 8 TO 16 MPH WITH 
                    GUSTS UP TO 25 MPH THIS AFTERNOON. 
CWR.................10 PERCENT. 
LAL.................NO TSTMS. 
WIND SHIFT..........NONE EXPECTED...BUT IF A SEA BREEZE DEVELOPS
                    WINDS COULD BRIEFLY SHIFT TO SOUTH SOUTHEASTERLY
                    LATE THIS AFTERNOON. 
MIXING HEIGHT.......100-1800 FT AGL...INCREASING TO 1400-2300 FT 
                    AGL IN THE AFTERNOON. 
TRANSPORT WIND MAX..SW 29
DISPERSION..........VERY GOOD

TIME (EDT)          10 AM  NOON   2 PM   4 PM   
SKY (%).............35     51     67     64     
WEATHER COV.........                            
WEATHER TYPE........NONE   NONE   NONE   NONE   
TSTM COV............                            
TEMP................59     66     71     73     
RH..................57     47     41     41     
20 FT WIND..........S 10   S 13   S 14   S 16   
20 FT WIND GUST.....15     20     20     25     
MIX HGT (FT)........1000   1800   2300   1800   
CWR.................0      0      0      10     
LAL.................1      1      1      1      

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AFTER 
                    MIDNIGHT. 
MIN TEMPERATURE.....AROUND 60. 
MAX HUMIDITY........84 PERCENT. 
WIND (20 FT)........SOUTHWEST WINDS 13 TO 15 MPH WITH GUSTS UP TO 
                    25 MPH. 
CWR.................10 PERCENT...INCREASING TO 20 PERCENT. 
LAL.................NO TSTMS. 
WIND SHIFT..........WINDS WILL SLOWLY SHIFT FROM SOUTHERLY TO 
                    SOUTH SOUTHWESTERLY THROUGH THE EVENING HOURS 
MIXING HEIGHT.......0-1000 FT AGL. 
TRANSPORT WIND MIN..S 13
DISPERSION..........VERY POOR

TIME (EDT)          6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM   
SKY (%).............61     58     61     65     68     75     
WEATHER COV.........                            S CHC  S CHC  
WEATHER TYPE........NONE   NONE   NONE   NONE   RNSHWR RNSHWR 
TSTM COV............                                          
TEMP................72     68     66     64     63     62     
RH..................44     54     63     73     78     84     
20 FT WIND..........S 15   S 13   S 14   S 14   SW 15  SW 15  
20 FT WIND GUST.....25     20     20     20     25     25     
MIX HGT (FT)........1000   300    100    100    300    100    
CWR.................10     10     10     10     20     20     
LAL.................1      1      1      1      1      1      

.FRIDAY...

SKY/WEATHER.........CLOUDY. A CHANCE OF SHOWERS IN THE 
                    MORNING...THEN SHOWERS LIKELY AND A CHANCE OF 
                    THUNDERSTORMS IN THE AFTERNOON. 
MAX TEMPERATURE.....AROUND 75. 
MIN HUMIDITY........57 PERCENT. 
WIND (20 FT)........SOUTHWEST WINDS 13 TO 14 MPH. GUSTY AND ERRATIC 
                    WINDS EXPECTED NEAR THUNDERSTORMS LATE. 
CWR.................20 PERCENT...INCREASING TO 60 PERCENT. 
LAL.................NO TSTMS UNTIL 1700...THEN 16-25 STRIKES. 
WIND SHIFT..........NONE EXPECTED EXCEPT IN THE VICINITY OF
                    THUNDERSTORMS 
MIXING HEIGHT.......0-1400 FT AGL...INCREASING TO 2100-3400 FT AGL 
                    LATE IN THE MORNING.
TRANSPORT WIND MAX..SW 30
DISPERSION..........VERY GOOD 

TIME (EDT)          6 AM   8 AM   10 AM  NOON   2 PM   4 PM   
SKY (%).............83     90     91     91     92     91     
WEATHER COV.........S CHC  CHANCE CHANCE CHANCE LIKELY LIKELY 
WEATHER TYPE........RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR 
TSTM COV............                                          
TEMP................62     63     68     72     74     74     
RH..................87     84     70     61     57     57     
20 FT WIND..........SW 14  SW 13  SW 13  SW 13  SW 13  SW 13  
20 FT WIND GUST.....20     20     20     20     20     20     
MIX HGT (FT)........BLW100 300    1400   2700   3400   2700   
CWR.................20     30     30     30     60     60     
LAL.................1      1      1      1      1      1      

$$
FORECASTER...JOHNSON
REQUESTED BY...GILBERT WAGNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20160421.MARSH.01/PHI