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E PA/NJ/DE Spring 2021 OBS Thread


Rtd208
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1 hour ago, CoolHandMike said:

Got down to 41°F here this morning, now at 44. Time for some coffee and then I shift 8 yards of mulch from the driveway to the beds in the back yard before it gets too hot. Meh.

At least humidity isn't an issue yet. But with the trees not fully leafed out, shade is at a premium. (I was reminded of that with my Irish skin this past weekend...lol!)

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Our 2nd 80+ day here in East Nantmeal and our warmest at 83.7 currently. The Chester County record should be safe as the mark is 88.0 back in 1990.  Even up to 83.6 for a high on the beaches in Sea Isle City NJ at 83.6 so far - I expect the sea breeze to kick in shortly and cut those temps back to the 60's with those still chilly ocean water temps in the low 50's

Backyard.20210428_132524472.jpg

SICHi.20210428_132536000.jpg

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Mt. Holly on the wind threat Friday afternoon/night.

In the wake of the strong cold frontal passage, we will dry out, and  
  attention will turn to the winds. Trends seen on the previous  
  overnight shift have continued today, with the potential for a  
  rather significant wind event late Friday into Friday night. In the  
  wake of the front, a very robust shortwave trough and associated  
  vorticity lobe will move through the region towards Friday  
  afternoon. An additional rain shower is possible late Friday morning  
  into the early afternoon ahead of this disturbance, but will likely  
  be limited in coverage due to decreasing moisture. Behind this  
  secondary disturbance, strong cold advection and a tight pressure  
  gradient will develop as surface low pressure rapidly deepens  
  heading into the Canadian maritimes, while high pressure encroaches  
  from the west. 28.12z guidance has actually trended even stronger on  
  wind fields for late Friday afternoon into Friday night. 12z NAM and  
  GFS BUFKIT soundings are supportive of wind gusts of at least 40 to  
  50 mph, if not higher, Friday late afternoon and evening. Continued  
  to trend the wind forecast upward to reflect this, though there is  
  still room to go up a bit more. Profiles suggest that little if any  
  stabilization of the boundary layer is likely at least during the  
  first half of Friday night, so while the timing is not the most  
  favorable for high winds in a traditional sense, that currently  
  doesn`t appear it will be much of a hindrance. If current trends  
  continue, we will at least reach Wind Advisory levels by late  
  Friday, and could potentially even be near High Wind Warning  
  thresholds. This is worth watching closely over the next couple of  
  days especially given leaves are now coming out on the trees,  
  increasing the wind damage risk.   
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