National Weather Service United States Department of Commerce

Tracking Severe Thunderstorms and Excessive Rainfall in the Southern U.S.; Winter Storm to Impact the Northern U.S.

A storm system will shift from eastern Texas into the lower Mississippi Valley Monday with additional threats of severe thunderstorms and heavy to excessive rainfall which may bring flooding. A Flood Watch remains in effect. In the northern U.S., a storm will bring heavy snow and gusty winds over parts of the northern Rockies, northern Plains, and Upper Midwest Monday into Wednesday. Read More >


28-day Mississippi River Forecast Plots

 

These experimental plots were created as a way to display long range (28-day) forecasts which became part of daily operations at LMRFC in November of 2016. The official forecast (2 days of QPF) is displayed along with an experimental, raw model NAEFS-based forecast (16 days of QPF).

 


NEXRAD ZR Relationship Table

 

This table displays the radar reflectivity to rain rate relationships being used by each of the NEXRAD radar sites in the LMRFC area. Local weather forecast offices will change this relationship seasonally and by rainfall event to help improve radar estimates of rainfall.

 


MRMS Rainfall Diagnostics

 

Plots displaying diagnostics for the MRMS radar-only rainfall estimate product. The plots were developed as a tool for monitoring biases in radar-only products.