STORMcast Discussion 2017-03
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Time: 1300 EST
The STORMcasts shown here are intended for the students of
UDHS's AGS and AES geoscience programs and are for
educational/informational purposes only. They frequently
combine scientific concepts along with a sense of humor that often
pokes fun at our behavior during weather events. While
intended to be informative, the STORMcasts should never be used to
make life and death decisions during severe weather events.
Follow the appropriate bulletins posted by the National Weather
Service and local media outlets for appropriate actions during these
|Current National Weather
Service advisory map as of STORMcast issuance...
WINTER WEATHER ADVISORY -
For central and northern PA and NJ from 6 PM to as late as 2 AM
depending on location. Light wintry mix of snow changing
to ice. Hazardous
driving conditions possible.
HAZARDOUS WEATHER OUTLOOK
For a light accumulating snow for most of the forecast
area overnight tonight.
(Map courtesy of NWS)
Hi everybody. It's a very busy time for me right now since my
meteo. students have started their two week long forecasting final
exam so, at the moment, I could probably tell you more about the
weather in Milwaukee (our forecast city) than Philly but we've got a
Winter Advisory Advisory posted so here's quick sense for what is
going to happen.
To our west, we've got an intensifying low
pressure system that will be bringing some more light precipitation
to the region by tonight. However, this same system will also
pump huge amounts of warm air into the area. In fact, our
temperatures will continue to rise slow and steady for at least the
next 48 hours with barely a drop off during the overnight hours.
By Thursday, most of teh 'burbs will top out between 55F and 60F so
this is quite a surge. The only potential complication
pressure in Canada will draw significant amounts of warm air
into it from the south moderating our temperatures through
Thursday. Image: PSU
Timing is everything with this warm air and unfortunately for much
of the state's interior and at higher elevations, the precipitation
will arrive first before temperatures can rise above freezing so
much of the region will see a bit of snow and ice before everyone
transitions over to rain. There is concern for some freezing
rain and sleet to the NW of Philly which is the main reason the WWA
has been posted. The snow will honestly not be the issue.
Philly, DE and south NJ should already be moving above freezing.
My own station in MontCo is hovering around 32F right now and will
continue to rise long before precipitation starts so there is
minimal threat of ice overnight tonight.
If you're out
and about tonight, ust exercise some caution at the outset of
precipitation which will probably occur around the 8PM-11PM time
frame. Remember, just because the air temperature is above
freezing does not mean the ground is so again, freezing rain is a
concern for awhile tonight. I expect no issue by tomorrow
morning except perhaps way upstate.