MN Transplant

Feels like a night where we put up 82 for a low at DCA

BWI 101

98.4 has been my high. Related to the contest, Salisbury is getting into the heat game with 97. Richmond is only 95, but they are hanging onto the upper 70s DPs while we are down to low to mid 70s for the most part up by DC.

They’ll get a late kick out of the west and push them over the top.

BWI wins the race to 100

Yikes

I was assuming that we were looking at more of a 2024 or 2010 like heat where the focus wasn’t on the humidity, but this is damn near 2011.

IAD is almost certainly going to get their record daily high today. This airmass isn't historic enough to challenge all-time highs, but daily records at any time in July is impressive. And the lows will challenge records too.

10:30am and we have our first couple of mesonet sites hitting 110 HI.

One good thing that I'm seeing is that the new RRFS seems to be handling this a lot better than the HRRR. The HRRR is out of control with mixing out the boundary layer, with places like Fredericksburg with something like 108/55 tomorrow. Conversely, the RRFS is a reasonable 102/69 for tomorrow.

My annual warning for reading the 5-minute obs. Because of rounding, a 5-minute reading of 99 could mean 98 or 99. A reading of 100 is 100.

9am temps. DCA: 88 IAD: 87 BWI: 89 88.3 at home

Immediately as there was a west wind

You and I have to be feeling good about staying on the low side for SBY.

The max on the mesonet was 97 and IAD/BWI were also in the 97 range. I think we generally were not quite there yet with the overall environment and the DPs didn’t help. Feels like tomorrow and Friday are likely triple digits though.