Areas of heavy rain and even a few rumbles of thunder are possible Saturday with the passage of a strong cold front.
Parts of the D.C. area may receive up to 2 inches of rain and possibly even higher amounts in isolated areas. A Flood Watch has been posted for the majority of the D.C. Metro from Saturday morning through Saturday evening for areas below shaded in dark green.
Rain appears like it will continue on and off the remainder of today, but the heaviest activity is expected tomorrow closer to lunch time. Temperatures are also expected to warm through the remainder of today, into tonight and continue to warm ahead of the front tomorrow.
High temperatures may reach the 60 degree mark ahead of the front tomorrow.
- Forecast precipitation from the WPC through Sunday morning
Above is a look at the forecast precipitation from the Weather Prediction Center. The shaded area in purple are precipitation totals of 1.5 inches to 2.5 inches.
A widespread heavy rain is anticipated from the southeast north into North Carolina, the Mid Atlantic and Northeast. The I-95 corridor will be hit hard from Virginia through the northeast so travel conditions will be poor.
- Courtesy: WeatherBELL Models
The timing of the front brings some of the heaviest rainfall through the D.C. area around lunch time. Above is a look at the 4km NAM forecast for Saturday at 1 p.m., bringing heavy rain to the Metro.
Checking some of the latest forecast atmospheric soundings, it appears some gusty winds and possibly even a few rumbles of thunder will be possible as there will be a little elevated instability across the region.
The Storm Prediction Center has issued a Slight Risk for severe storms over much of the Southeast including the I-95 corridor. Storms will develop in a very unstable airmass ahead of the cold front and will have the potential for gusty winds and possibly even a few isolated tornadoes.
This outlook included extreme Southern Maryland, the Northern Neck, and the Eastern Shore, so if you are traveling in those areas stay tuned to the latest forecasts and keep and eye out for rapidly changing weather conditions.
Rainfall totals around the D.C. Metro as of now are forecast to be heaviest southeast of D.C., with upwards of 2 inches of rain possible. Flooding doesn't appear to be a huge concern at the moment, but ponding of water and minor flooding of streams and creeks still may be possible.
Remember: if you come up to high water across the roadway, please turn around and try to find another route. Below gives an idea of how much rain the 4km NAM model is predicting for the D.C. area by Saturday night.
- 4km NAM forecast precipitation by Saturday night (Courtesy: WeatherBELL Models)