911  
FNUS71 KLWX 190134  
FWSLWX  
 
SPOT FORECAST FOR R39 OLD RAG...SHENANDOAH NATIONAL PARK  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
934 PM EDT MON AUG 18 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 2200 EDT ON AUGUST 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION  
 
CLOUDS ARE GOING TO PERSIST THE ENTIRE NIGHT AT OLD RAG, INCLUDING  
ON BOTH SIDES OF THE BLUE RIDGE. SEVERAL CLOUD LAYERS ARE NOTED  
BETWEEN 2500 TO 3500 FEET, AND EXPECT CLOUDS TO LOWER IN HEIGHT  
THROUGH THE NIGHT TO AS LOW AS 1000 FEET. PATCHY FOG IS POSSIBLE,  
AND COULD REDUCE VISIBILITY TO LESS THAN 1 MILE.  
 
FOR ELEVATIONS ABOVE 2000 FEET - STEADY NORTHEAST WINDS AROUND  
10-15 MPH AND GUSTING TO AROUND 20 MPH ARE EXPECTED THROUGH THE  
NIGHT. FOR LOWER ELEVATIONS, WINDS WILL DIMINISH TO AROUND 10 MPH  
OR LESS AFTER MIDNIGHT. CONDITIONS ARE DRY THIS EVENING, THOUGH A  
STRAY LIGHT SHOWER OR SPRINKLE WILL BE POSSIBLE AFTER MIDNIGHT.  
   
REST OF TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). PATCHY FOG  
OVERNIGHT. SLIGHT CHANCE OF SHOWERS OVERNIGHT.  
CHANCE OF PCPN......20 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....AROUND 61.  
MAX HUMIDITY........100 PERCENT.  
SURFACE WINDS (MPH).NORTHEAST WINDS 6 TO 9 MPH.  
 
TIME (EDT) 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........80 87 80 85 84 85 85 87  
WEATHER COV..... PTY PTY SCH SCH SCH SCH  
WEATHER TYPE.... FOG FOG RNF RNF RNF RNF  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 20 20 20 20  
CHC OF THDR (%).0 0 0 0 0 0 0 0  
TEMP............62 62 62 62 62 63 62 62  
RH..............100 97 97 97 93 90 93 93  
SURFACE WND DIR.NE NE NE NE NE NE N N  
SURFACE WND SPD.10 10 9 9 8 8 8 8  
SURFACE WND GST.18 17 16 15 14 14 13 13  
 
 
FORECASTER...RODRIGUEZ  
REQUESTED BY...RNGR E YOUNT  
TYPE OF REQUEST...SAR  
.TAG 2520186.0/LWX  
.DELDT 08/18/25  
.FORMATTERVERSION 2.0.0  
.EMAIL SHEN_COMMUNICATION@NPS.GOV  
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