It's always foggy in Philadelphia

wheelsup

wheelsup

Well-Known Member
1/16 of a mile? This is a first for me on the east coast.
 

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Cat IIIa/b autoland is a nice feature. I've done one down to 600 RVR (Cat IIIa mins), and we had to stop after clearing the runway to wait for a follow-me truck. #widebodyproblems :)
 
dasleben said:
Cat IIIa/b autoland is a nice feature. I've done one down to 600 RVR (Cat IIIa mins), and we had to stop after clearing the runway to wait for a follow-me truck. #widebodyproblems :)
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Alert Height, baby!


Sent from my free Obama Phone
 
born2aviate said:
When is VV used instead of RVR?..Or am I even asking the right question...:confused:
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Vertical Visibility is strictly a measure of how high you could see if looking straight up. Because visibility (in SM or RVR) is normally controlling for an approach, it is pretty much for reference only.
 
born2aviate said:
So its a different way of saying cloud base?
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Vertical Visibility (VV) is a sky cover, reported in hundreds of feet. Runway Visual Range (RVR) is a visibility, reported when the visibility is 1 mile or less and/or the RVR is 6,000 feet or less.

VV could be a higher than surface fog layer, smoke, etc.
 
Wow 0sm that is pretty darn bad!! Would be neat to see though. Would suck in HPN, I can't imagine how congested it looked on the ramp and in the "terminal"!! Although I guess you couldn't see much...
 
VV is used when an accurate reading of cloud bases cannot be determined, due to visible moisture at the surface (fog or snow usually).

Today at the home base, the METAR is showing a vertical visibility of 1,500 feet due to snow. As such, no clouds are reported. There obviously are clouds up there, but there's no way of know at what altitude due to the snow.
 
auw2fly said:
VV is used when an accurate reading of cloud bases cannot be determined, due to visible moisture at the surface (fog or snow usually).

Today at the home base, the METAR is showing a vertical visibility of 1,500 feet due to snow. As such, no clouds are reported. There obviously are clouds up there, but there's no way of know at what altitude due to the snow.
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Or certain mornings at coastal stations with super dense fog. "Sky obscured, vertical visibility 200 feet."
 
Conditions here in the nort east have been awful for the last week. Only one VFR day (Thursday) in about 8 days. Sucks even more when you are trying to prep for a check ride.
 
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