National Weather Service United States Department of Commerce

Mississippi Valley Summer Heat Wave; Severe Thunderstorms and Flooding Possible to the North

A dangerous summer heat wave will continue much of the Plains, Mid/Lower Mississippi Valley, Southeast U.S. today and Thursday. Areas of severe thunderstorms may occur today and again on Thursday from parts of the northern/central Rockies and High Plains into the Ohio Valley and Carolinas. Excessive rainfall over similar areas may bring flash flooding today and Thursday. 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.