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June 2019 General Discussions & Observations Thread


Rtd208
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6 minutes ago, bluewave said:

That marine layer just doesn’t want to give up along the New England coast. A lingering piece of the pattern which resulted in our delayed start to summer. Eastern LI is still in the soup with MTP at only 65 degrees.

https://www.wrh.noaa.gov/mesowest/getobext.php?sid=KMTP&table=1&num=168&banner=off

 

FE7A83C5-839E-426C-8C33-D049845528A9.thumb.jpeg.8078fa081ad2085090e8ec23ab4b5bee.jpeg

 

Wow 23 degree difference between here and Montauk, 88 now

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Via Upton: 

Quote

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
The main focus of the long term is the potential for a round of
scattered severe thunderstorms on Saturday. The NAM is placing about
4000 J/kg of CAPE across the area. Model timing in the NAM and ECMWF
are looking good for an afternoon frontal passage, which would
maximize potential. The GFS has residual convection in the morning,
which could prove a limiting factor if it does occur. However, this
is not supported by the other data, and it is more likely that some
morning fog will give way to a hot and unstable day ahead of the
front. The NBM was used for temperatures, but this may prove to be
too low with guidance perhaps smoothing out the temperature gradient
near the front.

A second cold frontal passage is progged for Sunday. There will be
less potential for explosive convection, and the best dynamics are
progged to pass thru ern New England for now. The system is still
several days away, and the expected placement of the strong upper
low will need to be followed closely.

 

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Via Mt Holly:

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For Saturday and Sunday...As an upper-level trough overspreads
the Northeast, surface low pressure tracks to our north Saturday
with an associated weak cold front crossing our region by later
in the day. This front is forecast to be clearing our southern
areas early Sunday morning. On Saturday, temperatures should be
at or a little above Friday`s however dew points will be near
70F in advance of the front. Assuming convection holds off long
enough, the combination of the hot temperatures and higher dew
points should result in peak heat indices Saturday afternoon
approaching 100 degrees in Delmarva and along the urban I-95
corridor. Some showers and thunderstorms are anticipated to
accompany the cold front, however coverage is less certain.
Strong northwest flow aloft along with ample instability may
result in some robust convection Saturday with locally strong
wind gusts possible especially if enough organization can occur.
Some strong convection may occur Sunday as well given the
passage of the trough axis and a strong shortwave. This will be
refined as we get closer and resolve the timing and forcing
mechanisms better. Despite the cold front clearing our area to
start Sunday, the passage of a strong shortwave with the upper-
level trough axis should result in some additional showers and
thunderstorms.

 

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11 minutes ago, psv88 said:

Is your sensor surrounded by vegetation? ISP was 84 at 10 am, so you should be at least 86. 83 is way too low. 

Nope, it's a fan aspirated VP2.  Even my parent's house is 85 and that is by pool stones & I need to install new VP2 Pro to replace the old one, that's seen better days.

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4 minutes ago, uofmiami said:

I'm the cold spot, go figure.  Maybe I'm the only one with a properly mounted sensor, who knows?  

no, because you are even cooler than the ASOS sites further south...your sensor is off. My sensor is in the shade and partially over vegetation (which i watered this morning), 2m off the ground nowhere near any buildings, so there is no way your 83 is accurate

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I wonder how many aso sensors are off?...are they calibrated routinely?...I liked the old fashion weather box or shelter with room for all my sensors and a mercury min max thermometer...I'm building one now ...this is my old one I had 20 years ago...

 

weather box 1.gif

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1 hour ago, psv88 said:

same here, 86, still 81 in the park lol

Central Park is a joke, I wonder when the NWS will say enough is enough and either relocate it or clear the surrounding vegetation. Its records are forever tainted. LGA should take over as the official station until the Central Park situation gets fixed.

89 now, 90 is pretty much guaranteed at this point.

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13 minutes ago, bluewave said:

The only thing that could limit aerial coverage for us would be the winds going NW too quickly on Saturday. That’s why the latest NAM is dry. But the severe parameters are there if we can hold the moist SW flow longer and get some storms to fire. Still outside the best NAM range. 

the euro has been consistently holding the wind shift off until later. also the 3km nam is moist

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