National Weather Service United States Department of Commerce

Watching the Potential East Coast Storm Late This Week

Bitterly cold temperatures will persist across portions of the Plains, Great Lakes region and Northeast this week as a series of cold fronts moves across those regions. A weak system will track across the south this week with some wet weather. These systems may merge just off the east coast late this week. Meanwhile, ridge out west is resulting in air stagnation for the Pacific Northwest. Read More >

Many different estimates of observed precipitation are used in the river forecast process. Sources include rain gauge networks (both official and volunteer) as well as radar estimates.

Low Bandwidth
 

Daily 24hr precipitation report (HYDORN)
Text only, forecaster QCed. Point observations from gauges. Updates daily.

Daily 24hr precipitation from CoCoRAHS volunteers
Static images, no QC. Point observations from gauges.

Precipitation maps from SRCC
Static images, no QC. Gridded estimates derived from gauges.

Latest precipitation interactive maps
Gridded estimates from a combination of rain gauges and radar QCed by forecasters. Interactive maps with reduced functionality indended for mobile devices and tablets.

 

Full-Featured
 

Latest precipitation interactive maps
Interactive maps with dynamic overlays. Gridded estimates from a combination of rain gauges and radar. Not recommended for mobile devices.

Daily 24hr (ending at 12 UTC) gridded precipitation
Zoomable, panable map, forecaster QCed. Gridded estimates from a combination of rain gauges and radar. May be slow on mobile devices.

Hourly gridded precipitation
Zoomable, panable map, with some limited forecaster QC. Gridded estimates from a combination of rain gauges and radar. May be slow on mobile devices.