Tuesday March 23 2021
A shift in the wind makes all the difference. This morning may start off with sun, but it is not as chilly. BWI started in the 20s over the last few mornings, but in the 40s to start today.
The easterly wind will increase our clouds, with some showers reaching Washington and northern Virginia by evening.
We get in on the rain Wednesday, but then could get a real boost of temperatures to end the work week.
Morning Surface Weather
A large storm will charge into the northern plains. We get the influence of the coastal Low increasing our winds from the east. That is where our clouds will build from, and eventually lead to rain.
Seasonably chilly, but not nearly as cold as the last two mornings.
Normal Low in Baltimore: 36ºF; Record 30ºF in 1934
Normal High in Baltimore: 56ºF, Record 82ºF 1907
Afternoon Temperature Forecast
Clouds build in Tuesday, with rain showers and fog Wednesday into Thursday morning.
Evening Showers (South)
As the clouds increase for most of the region this afternoon, rain showers will expand in the southern portion of our region. This may reach Annapolis and Washington by sunset, but a better chance to their south.
Wednesday Morning Forecast Map
The wind shift from the East will be thanks to a combination of Low Pressure off the Southeast Coast and High Pressure in New England. That is what will bring in more clouds and cooler temps.
Wednesday 12 AM to 7 PM
Rain showers and some bands of heavier rain at times during the day.
The rain should be moving away by late afternoon.
This is the GFS Model forecast. It is not perfect, and recently we have seen over estimation with precipitation.
I am foregoing the forecast product as I do not think it is behaving properly. Here is my call over the next two days:
Thursday (around Baltimore)
Morning Fog, Afternoon Sun. High 65ºF to 70ºF
Morning rain showers. High 75ºF to 80ºF
Yes, I wrote up to EIGHTY!
Saturday: Sunny and Mid to Upper 60s
Sunday: Developing Rain, Possible Thunder showers: Mid 60s
March Gains and Losses: Sun, Temps, Time, and Moon Phases This month.
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