809  
FNUS71 KLWX 161541  
FWSLWX  
 
SPOT FORECAST FOR SMRG SAR STANDBY 2...SMRG  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1041 AM EST FRI FEB 16 2018  
 
FORECAST IS BASED ON INCIDENT TIME OF 0500 EST ON FEBRUARY 17.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
SHOWERS WILL ACCOMPANY A COLD FRONT TODAY. MUCH COOLER AND BREEZY  
CONDITIONS ARE EXPECTED LATE THIS AFTERNOON INTO TONIGHT.  
 
HIGH PRESSURE WILL PASS NORTH OF THE AREA LATE TONIGHT INTO EARLY  
SATURDAY, THEN LOW PRESSURE PASSING TO THE SOUTH WILL BRING A  
WINTRY MIX TO MUCH OF THE AREA SATURDAY AFTERNOON AND EVENING.  
 
HIGH PRESSURE WILL RETURN FOR SUNDAY BEFORE ANOTHER STORM SYSTEM  
APPROACHES FOR EARLY NEXT WEEK. A WARMING TREND IS EXPECTED DURING  
THIS TIME.  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 26.  
MAX HUMIDITY........71 PERCENT.  
SURFACE WINDS.......LIGHT AND VARIABLE WINDS.  
 
TIME (EST) 5 AM  
SKY (%).........18  
WEATHER COV.....  
WEATHER TYPE....NONE  
CHC OF PCPN (%).0  
TEMP............32  
RH..............61  
SURFACE WIND....N 5  
SURFACE WND GST.  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT), THEN BECOMING  
CLOUDY (85-95 PERCENT). SNOW IN THE AFTERNOON.  
SLEET LATE.  
CHANCE OF PCPN......90 PERCENT.  
MAX TEMPERATURE.....AROUND 36.  
MIN HUMIDITY........54 PERCENT.  
SURFACE WINDS.......LIGHT AND VARIABLE WINDS, BECOMING SOUTH 6 TO 9  
MPH IN THE LATE MORNING AND AFTERNOON.  
 
TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........27 35 47 83 96 100  
WEATHER COV..... LIKELY DEFNTE  
WEATHER TYPE....NONE NONE NONE NONE SNOW SNOW  
CHC OF PCPN (%).0 0 10 10 60 90  
TEMP............31 29 33 34 35 34  
RH..............63 69 61 58 59 72  
SURFACE WIND....NE 5 E 5 SE 6 SE 8 S 9 S 9  
SURFACE WND GST. 6 8 9 12 13  
   
SATURDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT), THEN BECOMING  
PARTLY CLOUDY (40-50 PERCENT). SNOW AND SLEET  
IN THE EVENING. FREEZING RAIN IN THE EVENING.  
CHANCE OF PCPN......90 PERCENT.  
MIN TEMPERATURE.....AROUND 29.  
MAX HUMIDITY........100 PERCENT.  
SURFACE WINDS.......WEST WINDS 6 TO 8 MPH.  
 
TIME (EST) 6 PM 9 PM MIDNGT 3 AM  
SKY (%).........99 96 79 51  
WEATHER COV.....DEFNTE DEFNTE  
WEATHER TYPE....SNOW FZRAIN NONE NONE  
CHC OF PCPN (%).90 80 10 10  
TEMP............31 30 31 32  
RH..............88 100 100 96  
SURFACE WIND....S 8G10 S 6G9 SW 6G8 W 8G10  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 51.  
MIN HUMIDITY........50 PERCENT.  
SURFACE WINDS.......WEST WINDS 6 TO 8 MPH IN THE MORNING, BECOMING  
LIGHT AND VARIABLE, THEN BECOMING SOUTH AROUND  
6 MPH LATE.  
 
TIME (EST) 6 AM 10 AM 2 PM  
SKY (%).........45 22 30  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE  
CHC OF PCPN (%).0 0 0  
TEMP............34 42 49  
RH..............82 65 50  
SURFACE WIND....NW 8G10 W 8G10 W 4G6  
 

 
FORECASTER...ROSA  
REQUESTED BY...BEN ABRAMSON  
TYPE OF REQUEST...SAR  
.TAG 1802073.0/LWX  
 
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