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Heavy Rain Late This Evening; Severe Thunderstorms Possible Monday Afternoon

April 19, 2015
Rainfall Accumulation Potential through Monday PM - GFS; Image courtesy Weatherbell

Rainfall Accumulation Potential through Monday PM – GFS; Image courtesy Weatherbell

Rain will develop from south to north between 5 and 8 this evening. Rain will fall heavy at times between 11PM tonight and 7AM on Monday morning. A few rumbles of thunder are possible with a widespread one to two inches of rainfall expected. Some locations along the east facing slopes of the Blue Ridge could pick up three inches of rain.  The Storm Prediction Center has placed the Mid-Atlantic under a “Slight Risk” for severe thunderstorms Monday afternoon.

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Widespread 1 to 2″ of Rain Likely Sunday Night into Monday

April 17, 2015
Latest GFS Model shows widespread rainfall totals of 1 to 2". Image courtesy:

Latest GFS Model shows widespread rainfall totals of 1 to 2″. Image courtesy:

Enjoy Saturday… it will be the warmest weekend day we’ve had so far this year and for once, the sun will be shining.

Heavy rain will develop across our region Sunday night continuing through the Monday morning rush hour. One to two inches of rain is likely with some spots possibly picking up 3″ of rain. Mostly dry conditions return Tuesday through the remainder of the work week along with below average temperatures. Lows will drop into the 40s with highs near 60.

Climate Models Suggest a Slow Start to Spring

March 21, 2015

Temperature departure from normal 21 through 26 of March; Image courtesy:

Today was the official first full day of Spring but the climate models suggest a slow start to the season with periods of cooler than average temperatures through about mid April.  The Chesapeake Bay waters and ocean temperatures are running cooler than normal after a brutally cold winter.  Add to the fact that our last average frost/freeze occurs around mid-April … patience would be wise before planting frost/freeze sensitive plants. 

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Last Call (Snow Maps) for Spring Storm

March 19, 2015
Snowfall Accumulation through 5 PM Friday

Snowfall Accumulation Potential through 5 PM Friday

Rain will begin falling between 2 and 4 AM Friday morning. The rain will change over to snow from northwest to southeast.

Snow will likely begin falling inside the Capital Beltway between 6 and 8 AM, (sooner in the northwestern suburbs) with predominantly rain across the southern and eastern suburbs (Stafford eastward to southern Maryland).

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Snow Map for Spring Storm

March 18, 2015
Snowfall Potential through Friday Afternoon

Snowfall Potential through Friday Afternoon

The latest forecast models are surprisingly bullish with snowfall accumulations Thursday night & Friday.  Several hours of moderate to heavy snow is likely between 4 and 10 AM Friday.

In the immediate Metro Area I expect a general 1 to 2″ of snow on grassy surfaces.

The northern and western suburbs can expect 2 to 4″ of snow on grassy surfaces with slick travel conditions on untreated roadways during the morning rush hour.

Elevations above 1500 feet including the Blue Ridge, Bull Run Mountains, Sugarloaf, Catoctins, and locations across northern Maryland could pick up over 4 inches of snow with this storm.

Snow will gradually change over to rain across much of the region during the afternoon hours. Snow will hang on the longest across northern Maryland. There will likely be some delays and closings in the typical colder locations on Friday morning.

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