June Discobs 2025

[Weather Will]

Light drizzle breaking out.....update needed to forecast....edit they did!

[BlizzardNole]

Can't believe I got some garden work done with temps in the upper 60s! 

[Mrs.J]

So nice to not be up at the crack of dawn for my youngest to ride. She is currently rehabbing her pony as a nice light rain shower is coming down here in Aldie. Birds are singing all over. 

[nw baltimore wx]

Picked up .08” of rain and .01” bird poo yesterday.

[aldie 22]

decent little rain shower 0.47 from yesterday and today with 5.24 so far for the month of June

[jmk]

Insane amount of lightning last night, and has been pouring all morning here.

[WEATHER53]

Man I was running 102-105 heat indexes at this time Monday thru Thursday and now it’s 70.

Kinda like 63 vs 30 for contrast 

 

[csnavywx]

On 6/24/2025 at 12:46 PM, GramaxRefugee said:

Was just gonna mention about PAX. They've traditionally been pretty good. Starting to wonder what's up this year.

As to Balto...it's been off for many years, starting when the MD Science Center installed some solar PV panels next to the instrument. Added several degrees to every reading. After a while LWX removed them from their list for a few years. I (for one) will never reference that site again, winter or summer.

Maybe someone knows something about PAX. (There's significant knowledge hidden around AmWX; just need some patience usually)

The sensor is "in-spec". But it does tend to run 1-2 degrees warmer than it should and about a degree too soft on dewpoints. (This is with me various handhelds against the main ASOS sensor). But it's closer than I initially thought when I started to suspect it was too warm. It was at least 102-103 here on Wednesday.

A few factors that helped:

Evapotranspiration effects here tend to peter out faster than nearby stations because of lower tree cover and a lot of grass that tends to cure and brown quickly under very hot and dry conditions. That happened in just 3 days here this week. Note that during the peak temp, dewpoints dropped rapidly, indicating drier air from aloft mixing down as sensible heat flux increased relative to latent heat.

There was no gradient flow and nearly perfectly barotropic conditions with a lot of subsidence and very strong vertical mixing. This prevented a sea breeze from properly forming on time and heavily stratified the surrounding waters. I was in that water in Pt. Lookout on Monday and the top layer was easily 10F+ warmer than 1-2m down. Lack of any appreciable mixing meant that the skin temp of the water surface was very hot and that helped disrupt/delay a sea breeze circulation in this locale.

[csnavywx]

Btw, I think the unusual convective behavior last night was in part due to the extreme (and highly stratified) Bay water temps imparting a lot of latent and sensible heat flux to the atmosphere when that back door cold front and aggregate outflow came in to help trigger it after sunset (along with some radiative cooling at the anvil level post sunset). Bay temps at 1.5m were running at 86-90F and probably quite a bit hotter in the top 1-2 ft.

Storms did their job last night and temps are back down to 82-83F today.