Closer view of the high resolution NWS "HRRR" model's "simulated weather radar" forecast through Sunday afternoon. | Tom Skilling

Combining data from multiple radars and multiple sensors (known as MRMS), we can put together a more complete picture of what kind of precipitation larger scale storms are producing. Looking at an animation of multiple radars over the northeastern U.S. we can see the counterclockwise rotation associated with the low pressure system affecting the area. https://www.nssl.noaa.gov/projects/mrms/ | U.S. National Weather Service (NWS)

12/11/2024 - 12 PM EST The latest NWS national radar mosaic shows a large swath of rain that stretches from Maine to Florida along and out ahead of a potent cold front. Embedded strong thunderstorms and heavy downpours can lead to localized flooding concerns this afternoon. | NOAA NWS Weather Prediction Center