July 12, 2023
Wednesday Update
Even in a quiet weather pattern, there is something to talk about. We still have comfortable humidity levels for mid-July, so as the heat builds today it will remain a ‘dry heat’.
This same pattern is allowing local pollution levels to build. So more will reach Code Orange air quality in central Maryland, while Northeastern Maryland will reach Code Red.
The humidity will build along with more heat, allowing thunderstorms to return over the next few days.
High Pressure is still capping the atmosphere with light winds and sinking air. This keeps the sun at full force and allows the pollution levels to build.
Thunderstorms will be more common along the Great Lakes. Eventually, this will build our way later in the week, as high heat surges ahead of it.
This is a common function of high heat, high sun angle, and light wind. This allows daily pollution to build and react to form ground-level ozone. It is NOT from the Canadian Wildfires this time.
More of Central Maryland will reach Code Orange Air Quality. This is unhealthy for sensitive groups.
Code Red, which is unhealthy for all, will be the set up in Northeastern Maryland. This includes Harford and Cecil Counties.
Normal Low in Baltimore: 68ºF
Record 53ºF in 2002
Normal High in Baltimore: 89ºF
Record 97ºF 1908
Daily pulsing of thunderstorms mainly in the afternoon heating and fading overnight.
It looks like we may not get a break from the 90s after all this week. The humidity will climb with the highest temperatures in this cycle on Thursday. Then we bring in afternoon and evening thunderstorms for a few days. This will diminish as temps climb again early next week.
I am aware there are some spelling and grammar typos and occasional other glitches. I take responsibility for my mistakes, and even the computer glitches I may miss. I have made a few public statements over the years, but if you are new here you may have missed it: I have dyslexia, and found out during my second year at Cornell University. It didn’t stop me from getting my meteorology degree, and being the first to get the AMS CBM in the Baltimore/Washington region. One of my professors told me that I had made it that far without knowing, and to not let it be a crutch going forward. That was Mark Wysocki and he was absolutely correct! I do miss my mistakes in my own proofreading. The autocorrect spell check on my computer sometimes does an injustice to make it worse. I also can make mistakes in forecasting. No one is perfect predicting the future. All of the maps and information are accurate. The ‘wordy’ stuff can get sticky. There has been no editor that can check my work when I needed it and have it ready to send out in a newsworthy timeline. Barbara Werner is a member of the web team that helps me maintain this site. She has taken it upon herself to edit typos, when she is able. That could be AFTER you read this. I accept this and perhaps proves what you read is really from me… It’s part of my charm.
#FITF
