Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Model Data

Penn State Meteo Department's E-Map Wall (v 2.0)

NOAA National Center for Environmental Prediction (NCEP)

Operational Guidance

NCEP's Full Operational Suite of Model Data (NAM, GFS, etc.)

Ensemble Forecast Links:
Rapid Refresh / CAMs	Short Range Ensembles (SREF)	Medium-Long Range Ensembles
NSSL CAMs (Convective Allowing Models)		Situational Awareness Tables
Hi-Res Ensemble Forecast (HREF)	SPC SREF Maps	CDC/ESRL Map Room - GFS Ensemble Graphics. (plots to 360hrs)
NCEP Time-Lagged N. America Rapid Refresh Ensemble System (NARRE-TL)	SPC NCEP SREF Plume Plots	GEFS Plume Diagrams

Bob Hart's Banded Precipitation Diagnostics Page
Great wintertime reference for Conditional Symmetric Instability (CSI) and forecasting the bands of snow often associated with CSI.