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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Saturday
• 
• High: 70 °
• Low: 41 °
• Clear

• Sunday
• 
• High: 72 °
• Low: 45 °
• Clear

• Monday
• 
• High: 75 °
• Low: 52 °
• Partly Cloudy

• Tuesday
• 
• High: 84 °
• Low: 63 °
• Partly Cloudy

• Wednesday
• 
• High: 86 °
• Low: 61 °
• Partly Cloudy

Area forecast discussion 
National Weather Service Wakefield Virginia 
336 am EDT Sat may 25 2013 


Synopsis... 
high pressure from the Great Lakes and Ohio Valley will continue 
to build into the middle Atlantic this weekend...resulting in dry and 
cool conditions. A warming trend will begin Memorial Day through 
next week as the high becomes situated off the East Coast. 


&& 


Near term /until 6 PM this evening/... 
surface low pressure developing in vicinity of Cape Cod at this time...W/ trough aloft pushing 
off the mdatlc CST. Area of cloudiness (cigs around 5kft) associated west/ 
the trough remains slo to move away from/dissipate over the eastern shr and 
adjacent coastal waters. Otherwise...surface hi pressure in vicinity of Great Lakes/Ohio Valley 
spreading southeast into the mdatlc and southeast Continental U.S. States. 06z/25 RUC 
showing cloudiness generally off the CST by 12z/25. West/ the storm continuing to 
move (sloly) away from new eng...and hi pressure building into the region 
from the northwest...dry/cool weather expected to start the Holiday weekend. Northwest winds 
remaining gusty (to 25-40 mph) throughout the day near the CST...and 
breezy inland. Hi temperatures from the m60s to around 70f. 


&& 


Short term /6 PM this evening through Monday night/... 
upper pattern during the short term will be characterized by a 
trough in both the west and east with ridging over the ctrl 
Continental U.S.. upper closed low will be slo to track east-northeast through southern/eastern 
new eng tonight through sun. Deep layered northwesterly flow will result in 
dry/cool conds through Sun night. Temperatures will fall into the 
40s inaldn/l50s right at the CST tonight. Hi temperatures sun from the u60s to 
m70s. Low temperatures Sun night from the 40s to l50s. 


Meanwhile...stalled frontal boundary over the Gulf states will 
begin to lift northward late sun and Monday while at the same time...upper 
level ridge will finally progress eastward. As a result...a warming 
trend will commence Monday. As the ridge progresses eastward...a 
warm/moist airmass will interact with the boundary to produce 
showers and thunderstorms over the Midwest into the Ohio Valley 
Monday afternoon. Activity then expected to form into a mesoscale 
convective system. Mesoscale convective system will round the ridge...but will die out 
before reaching the mdatlc. Boundary will continue to lift northward 
Monday night. 


&& 


Long term /Tuesday through Friday/... 
have again gone close to a European model (ecmwf)/hpc(wpc) blend for the midweek time 
frame. Have allowed for some rain showers/isolated T later Tuesday as warm front 
lifts north across the area, with best chances across areas north of 
fvx/ric/wal line. 


The front shunts north of the area for the middle to latter part of the 
week. Meanwhile, middle-upper level ridging rebuilds across the eastern 
half of the Continental U.S. As surface high slides off the middle-Atlantic coast. 
Resultant Bermuda high/Summer-like setup will allow for increasing 
temperatures (and humidity values) for the middle to latter part of next 
week. Rainfall opportunities during this period will primarily be 
diurnally driven, with little more than partly cloudy and 
increasingly muggy conditions by night. 


&& 


Aviation /08z Saturday through Wednesday/... 
impressive upper trough for this time of year currently crossing 
area...and will gradually lift away from the region this weekend. 
High pressure builds into the area from the northwest. This will provide 
for a prolonged period of VFR with generally sky clear. At 06z...still 
broken/overcast Alto cumulus across the Delaware-Maryland-Virginia...which should clear in the 
next 2-4 hours. Biggest issue next 24 hours is wind. Most 
terminals should see gusts in the 25-30 knots range during the day 
today...then diminish after 00z sun. Winds should be considerably 
less on Sunday...although some gusts in the 15 to 20 knots range will 
still be possible. 


Next chance for ceiling/visibility restrictions will be later Monday-Tuesday as a 
warm front begins to affect the area...with increasing moisture. 


&& 


Marine... 
deepening storm just east of southern New England will continue lifting 
northeastward this weekend. Winds around this system will remain in the strong 
Small Craft Advisory range today...with gusts on the Bay/northern coastal waters around 30 
kts through at least this morning. Winds will slowly decrease 
tonight/early Sunday morning...as low moves away and high pressure 
builds into the region. Sunday will be better than today from a 
boating perspective...with winds generally at or below 15 knots on the 
Bay/rivers/sound...and 20 knots on the ocean. However...northwest direction 
should still keep conditions on the chopphy side...making conditions 
less than optimal. Monday appears to be the best day of the Holiday 
weekend...with winds mainly 10kt or less. 


High pressure becomes anchored off the southeast coast from Tuesday through the 
end of the week...allowing for a prolonged period of S/SW winds 
throughout the marine area. During most of this time frame...winds 
on the Bay/rivers/sound will be in the 10 to 15 knots range...and 10 to 
20 knots on the ocean. 


&& 


Akq watches/warnings/advisories... 
Maryland...none. 
NC...none. 
Virginia...none. 
Marine...Small Craft Advisory until 6 PM EDT this evening for anz633- 
635>638. 
Small Craft Advisory until 6 am EDT Sunday for anz630>632-634- 
650-652. 
Small Craft Advisory until midnight EDT tonight for anz654-656- 
658. 


&& 


$$ 
Synopsis...alb/Sam 
near term...alb 
short term...alb/Sam 
long term...mam 
aviation...worse 
marine...worse