Jump to content


  • Content count

  • Joined

  • Last visited

About heavy_wx

Profile Information

  • Four Letter Airport Code For Weather Obs (Such as KDCA)
  • Gender
  • Location:
    State College, PA

Recent Profile Visitors

1,991 profile views
  1. Spring 2018

    Congrats, enjoy the "real" storms out there!
  2. Spring 2018

    I use it quite frequently, especially for the dual-pol observations. For reflectivity, I use the super-res, because its basically the same resolution as the "raw" level-2 data; the other ones are processed further and are lower resolution. The composite reflectivity is the max return in height observed by the radar at given location (though areas closer to the radar only have limited coverage in height, so precipitation aloft may not be detected). I usually go with the lowest-level tilts because those will be most representative of what's happening at the ground. Of course if you are interested in looking at precipitation at higher levels above you, go for the higher tilts! WDT is a company that provides the radar data over the internet. I think it can be faster if lots of people are looking at the data at the same time (e.g., during chase season or other high impact weather events). Let me know if you have any other questions about radar. I happen to study radar meteorology here at Penn State.
  3. Spring 2018

    Things have definitely greened up noticeably in the past couple days here. Interesting tracking the backdoor front; KIPT dropped about 8F in the last hour with northerly winds while it's still in the low 80s here.
  4. Spring 2018

    Haha, we have become so cynical up here. Anyway, definitely more chances for snow in the next two weeks, and more waiting for those of us seeking warm weather...
  5. Central PA - March 2018

    That area of the northern Catskills usually does well with these types of events with low-level upslope flow and a quasi-stationary maximum in mid-level frontogenesis NW of the low pressure center. I'm driving back to Albany today and might go through that area to take some pictures.
  6. Central PA - Jan/Feb 2018

    That subtropical jet... I might even get excited for major snowstorm prospects up here if this feature persists into the medium range guidance.
  7. Central PA - Jan/Feb 2018

    The GEFS has been showing the amplification of a ridge over the north Atlantic; this ridge starts to retrograde/build westward over Greenland by the 10-15 day time-frame. WIth that feature, it's then a question of how much does a trough from the tropospheric PV over Northern Canada build southeastward upstream of that ridge. That type of upper-level trough would allow for a better cold air source in the Northeast US. The operational GFS is also suggesting some strengthening of the subtropical jet around the 15-day time-frame, another factor that may give us more luck with storm chances. In any case, March is often a relatively snowy month climatologically, especially in the northern and high-elevation portions of Central PA.
  8. Central PA - Jan/Feb 2018

    Back to snow now; glad the ZR is over.
  9. Central PA - Jan/Feb 2018

    Mostly sleet now.
  10. Central PA - Jan/Feb 2018

    Sleet mixing with snow aggregates here. Maybe 1-2" of new snow.
  11. Central PA - December 2017

    Those maps are often misleading. For example, the one posted above includes a good amount of sleet at 10:1 ratio in the snowfall total. Not to mention that deterministic snowstorm predictions 10 days out almost never verify. I mean the pattern is going to be synoptically favorable for winter precipitation, but there is way too much uncertainty at this time to get anything (other than entertainment value) out of those snow maps.
  12. Central PA - December 2017

    Some flurries out there this morning.
  13. Central PA - December 2017

    KH waves are beautiful! Here's a particularly dramatic example from Alabama a few years ago: Basically they form when there is a vertical gradient in wind shear and/or temperature. A small, random disturbance can then grow to produce the waves; these waves are visible to us if the temperature and/or shear gradients occur near the tops of clouds, as the cloud basically traces out the waves. They're actually fairly common on fair-weather days after a cold frontal passage if you look out for them.
  14. Central PA - December 2017

    Still snowing here with modestly reduced visibility. Mostly wet surfaces out there with decent-sized melting aggregates.
  15. Central PA - December 2017

    Light snow here now.