The National Weather Service at Baltimore/Washington has issued a Winter Storm Watch for Tuesday. The watch includes the cities of Baltimore and Annapolis, but does not currently include Washington, D.C. The watch is effective from late Monday night through late Tuesday night for “6 to 9 inches” of snow with “periods of heavy snow.”
Monday’s weather is quiet with a deep blue sky and fair-weather clouds. Winds are light at the noon hour and temperatures are in the lower 40s. As we move through the afternoon, we can expect a gradual increase in cloudiness with highs topping out in the middle 40s. During the evening, clouds will thicken and lower. Rain showers will begin to overspread the area with temperatures slowly falling into the upper 30s. During the overnight hours, rain will mix with and change to snow by morning.
The system that will impact our weather on Tuesday is not a major storm, but it will be very dynamic with locally heavy snowfall. The low will dive south into the Ohio Valley, move across central Maryland, and then perhaps reform off the coast. These systems typically produce minimal snow in our area. In fact, temperatures will be warm enough to support all rain on Monday afternoon and evening with thermometer readings well into the 40s. However, rain may mix with or change to all snow by midnight with all snow during the day on Tuesday. At least a couple of inches of snow is expected, but higher amounts could fall across northern Maryland and southern Pennsylvania.
The forecasted amount of 6 to 9 inches is the maximum that this system can produce, and many areas will receive lesser amounts. At the moment, it appears that Annapolis will receive 1-3″ and northern Maryland will receive 3-6″ with locally higher amounts. This snow will certainly impact the morning commute as the transition from rain to snow is likely to occur in the pre-dawn hours. Cold weather is expected to remain entrenched across the East through all of the upcoming week. The coldest air of this winter season could impact Maryland by next weekend with lows in the single digits. After Tuesday’s snowfall, sunny weather will be the rule from Wednesday through Sunday.
Here is the exclusive weather forecast for Baltimore, Annapolis, and Washington D.C.:
Monday Night: Periods of rain, mixing with or changing to snow. The low will be in the lower 30s. Tuesday: Periods of snow and snow showers. 1-3″ is expected in Annapolis, with 3-6″ across northern Maryland. The high will be in the mid 30s. Tuesday Night: Snow showers early, then clearing with a low in the upper 20s. Wednesday: Sunny and breezy with a high in the mid 30s. Wednesday Night: Clear and chilly with a low in the upper 10s to lower 20s. Thursday: Sunny with a high in the mid 30s. Thursday Night: Clear with a low around 20. Friday: Sunny but cold with a high in the upper 20s. Saturday: Sunny but cold with a low around 15 and a high in the upper 20s. Sunday: Sunny but cold with a low around 10 and a high in the upper 20s.
- Baltimore average lows and highs
- Washington average lows and highs
- National Weather Service daily weather discussion
- Baltimore/Washington National Weather Service
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- Mid-Atlantic radar loop
- Sunrise and Sunset