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May 2021 Discussion Thread

Looks like DFW's average highs for JJA and September increased roughly 1*F for each month with the 1991 - 2020 normals.

It seems April and May's average went down 2-3*F though.
 
Friday could be an interesting day. From RAH:

.SHORT TERM /FRIDAY AND FRIDAY NIGHT/...
As of 400 AM Thursday...

The weak surface low over the eastern Carolinas will move offshore
during the afternoon as one last potent shortwave swings through the
base of the mid/upper level trough centered over the southern mid-
Atlantic states.

Ongoing rain showers Friday morning should become more widespread
and more convective in nature with scattered thunderstorms possible
by late morning and into the afternoon
as weak instability (500-750
J/kg MLCAPE) develops in response to increasing insolation beneath
the cold -H5 temps of 23 to -25C and steep mid-level lapse rates of
7-8 C/km. Given low freezing level heights of 5-7 kft, any decent
updraft could prove to be a proficient small hail/graupel producer
.
Convection is expected to shift east through the afternoon, and
should exit the coastal/eastern counties by sunset.

Cooler on Friday, due to the clouds and rain. Breezy with highs
ranging from mid 60s north to lower 70s south.
Clearing and renewed
CAA will result in chilly temps Friday night. Lows in the mid to
upper 40s(7 to 10 degrees below normal).
 
Given the shallow cape tho probably gonna be lots of small hail in cells vs large hail
 
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Uh the GFS has 40s next week lmao, our coldest May high ever is 49 for perspective if I recall correctly. Dubious to say the least and pushing 35 degrees below normal.
 
Latest hrrr has the strongest stuff E of Raleigh now and closer to @metwannabe
Yeah I spoke too soon leave it to the final day of approach for models to to say ehhh actually let’s move her a bit NE ... if they develop eat of me and go stationary and pivot East .... I’ll die
 
That stuff after next week could really open the door to a persistent and deep western trough if we phase a TPV and pacific wave out west, if they miss tho we probably get a more transient western trough with lower heights to our NE which would suck
 
NAM 3km at 12z was way more cranked up than precious runs even for RDU .. that will keep the nerves at bay for now
 
Let’s reel this in SD
Really looking like we will be in the focus of those initiated thunderstorms ... question will be how and where the storms initiate
Lets do it! Hopefully we can score both rounds tomorrow but either way both should be interesting. The first round in the morning has a much better chance of being a heavy rain event while the late day stuff is the better hail potential
 
Lets do it! Hopefully we can score both rounds tomorrow but either way both should be interesting. The first round in the morning has a much better chance of being a heavy rain event while the late day stuff is the better hail potential
Im stubborn now I want my ICE ... I want to use a ruler ??
 
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