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  • Water Vapor Imagery(evening of 5/2/15)
    70s, Sunshine, & Fair Weather Cumulus Sunday Afternoon
    Saturday was an amazing Spring day; after a morning low of 47 at Philly International Airport(avg low is 50) we had sunshine and fair weather cumulus in the afternoon. Granted there were some showers to the north they fizzled out thanks to a sea...
  • Water Vapor Imagery(evening of 5/1/15)
    Sunshine, Light Showers N&W Saturday
    Friday was a mostly overcast day with even some light sprinkles to the north and west; after a morning low of 49 at Philly International Airport the high was just 64(five degrees our average high now of 69). It did feel a bit humid as well, but...
  • Water Vapor Imagery(evening of 4/30/15)
    Cloudy With Scattered Showers Friday
    Thursday was seasonable despite more clouds than sunshine and an onshore flow; after a morning low of 50 at Philly International Airport we reached a high of 72 shortly before 1pm as the clouds rolled in. We will be back into the 70s by the latter...
  • Water Vapor Imagery(evening of 4/29/15)
    Mostly Cloudy, Scattered Showers, & An Onshore Flow Thursday
    Wednesday was the warmest day so far this year! After a morning low of 51 at Philly International Airport the afternoon featured sunshine, fair weather cumulus, and a northerly wind. The high reached 77, which is eight degrees above average! There...
  • Meteogram for Dulles Airport, VA on Apr. 25, 2015
    The wet-bulb effect, sleet at 51 degrees and more
    On the evening of Apr. 24, 2015, high altitude clouds started to advance towards the Washington, DC area. Beneath these clouds, the air mass was very dry, with ground-level dew points in the teens and twenties (Fig. 1). In fact, there was a very...
  • Water Vapor Imagery(evening of 4/26/15)
    Clouds, Light Rain Monday
    Sunday was closer to average with a mixture of sunshine and clouds, but also an onshore flow; after a morning low of 45 at Philly International Airport we reached a high of 64 in the afternoon(we should be 68). Overnight clouds will continue to...
  • Water Vapor Imagery(evening of 4/25/15)
    Partial Sunshine & Onshore Flow Sunday
    Saturday was another below-average day(temperature wise); after a morning low of 37 at Philly International Airport(below freezing N&W with some new record lows recorded) we had sunshine mixed with clouds throughout the day as an area of low...
  • Water Vapor Imagery(evening of 4/24/15)
    Sun, Afternoon Clouds, & Remaining Below Average Saturday
    Friday featured a mixture of sunshine and fair weather cumulus clouds, BUT that gusty northwesterly wind over 30mph not only made it feel very cold, but also very inviting to spend time outside. At Philly International Airport the high was just 57...
  • Water Vapor Imagery(evening of 4/23/15)
    Staying Well Below Average Friday
    Thursday was a dreary and miserable day once the clouds popped up in the late morning; there were some scattered showers(even some snow flakes, sleet, and graupel to the north and west) in the afternoon along with a gusty westerly wind up to 30mph...
  • Wall cloud approaches north Naples, FL - Mar. 27, 2015
    It is National Sky Awareness Week
    It’s always fun to look up at the sky and see the beauty and messages painted above. This includes white puffy or streaky clouds against a deep blue background (Fig. 1) or the fanning thunderstorm tops (known as anvils) spreading away from...
  • Water Vapor Imagery(evening of 4/22/15)
    Cold Pool Of Air Next 48 Hours; Temps Well Below Average
    Wednesday was mild ahead of a cold front; after a morning low of 47 at Philly International Airport the high reached 73 shortly after noontime before clouds popped up and we had gusty winds along a squall line(there was actually a 71mph wind...
  • Water Vapor Imagery(evening of 4/18/15)
    Onshore Flow & Late Afternoon Clouds Sunday
    Saturday was the warmest day we've seen since last September! Yeah baby! Unlike last September however it was very dry thanks to low dewpoints in the 30s! Philly International Airport reached a high of 81 this afternoon at 3:45pm(the record...
  • Water Vapor Imagery(evening of 4/17/15)
    Sun, Afternoon Clouds, & Near 80 Saturday!?!?
    Friday was a day of patientce; we started off with light showers in the morning and temperatures in the middle 50s while midday featured some sunshine & fair weather cumulus. This lead to some isolated showers and thunderstorms by the evening...
  • Projected Tuesday rainfall
    Scattered Showers Tuesday
    Monday in one word was AMAZING! Granted there was a southerly wind up to 20mph, but that allowed for great warm air advection to get us to 75 at Philly International Airport this afternoon! With the southerly wind it was in the upper 50s and lower...
  • Water Vapor Imagery(evening of 4/12/15)
    70s For Monday!
    Sunday was probably the best day we've had so far this year! After a morning low of 38 at Philly International Airport we reached 67 with a light southerly wind and plenty of sunshine. This was all thanks to high pressure and now it will start...
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