Thursday March 21 2019

Technically we can call this a spring rain, but that is where the fun ends. We already have plenty of water and soggy soil. Today’s coastal storm will be bringing in periods of moderate to heavy rain by lunchtime through this evening. Below are three radar simulation sliders to show the rain timelines in the morning, afternoon, and evening.

Between one and two inches of rain is expected, which can lead to high water. The spring tides may also add to high water on the Bay shores by this evening and tonight.


Low Pressure in North Carolina is heading our way and will pump in moisture. As expected (perhaps with the full moon), this storm is going to overachieve. That means it will bring more rain, but the good news is that it will last just today for us. This will rapidly develop and mix in heavy snow to our north in New England… but that cold air will bring snow to western Maryland Friday morning. We may get some flakes or ice pellets to mix in with showers Friday afternoon.


Local Weather Stats For March 21, 2019 in Baltimore

Average High:  55ºF

Record High: 89ºF in 1948

Average  Low: 35ºF

Record Low:  8ºF in 1965

                         *Record Snow:  = 9.7 in 1964

Sunrise: 7:08 AM

Sunset 7:19 PM  

*Daylight = 2:35 longer than yesterday 

*Bay Water Temperature = 45ºF at Thomas Pt. Light House 


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Morning Set Up

Radar Loop (2 Hours ending 6:10 AM)

Watch the heavy rain spread our way from the south.

Temperatures Today:

Most of the area will range between the mid 40s to near 50ºF.

It will feel chilly with the wet conditions.


Radar Simulation Timelines

Morning —> slider

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Afternoon —> slider

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Evening —> slider

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Rain Totals

This HRRR Model projection through this evening


The NAM 3 Km through Friday morning. This splits the heaviest rain in different locations but carries through the end of the event.


Friday Showers With Snow?

The colder unstable air will bring snow to western Maryland moist of Friday. The afternoon will bring some showers over the mountains. It is possible that colder air will mix in some snow or ice pellets. But temperatures will be too warm for anything to stick. Just mentioning it so you won’t be too surprised if you see it.


Temperature Outlook





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Related Links:

Winter Outlook

My Winter Outlook 2018-19: Multiple Nor’Easters and more snow

Was Your County Not Included?

Click this map for more on the regional forecast zones

Interactive Snow Report

November 15 Snow Reports- Interactive Map Compared To My Forecast

Winter Snow And Top 5 Wet Years 

Snowfall Seasons at Beginning and End of Top 5 Wet Years In Baltimore


Related Winter Outlooks

Tropical Hints At Winter Snow

Solar Cycle: When Sun Spots Are Low We Get More Snow

El Nino Modoki May Enhance Snow Chances

Sweet Spot: Hitting 70ºF on Halloween is followed by more winter snow

Will A Wet Summer Bring A Snowy Winter?


Winter Weather Folklore

NOAA Winter 2018-2019 Outlook Explained: This Actually Supports Snow

Winter Outlook From Two Different Farmers Almanacs

Maryland Winters: Snowfall Maps and Baltimore Snow History