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NCEP Global Ensemble Forecast System (GEFS) guidance

The current GEFS run was initialized at 1800 UTC Tuesday January 21 2025.

GEFS mean: Total accumulated precipitation (click image for animation)
GEFS mean: Total accumulated precipitation (click image for animation)
GEFS mean: Accumulated precipitation anomaly (click image for animation)
GEFS mean: Accumulated precipitation anomaly (click image for animation)
GEFS mean: Total accumulated precipitation (Colorado zoom) (click image for animation)
GEFS mean: Total accumulated precipitation (Colorado zoom) (click image for animation)
GEFS mean: Accumulated precipitation anomaly (Colorado zoom) (click image for animation)
GEFS mean: Accumulated precipitation anomaly (Colorado zoom) (click image for animation)
GEFS postage stamps: accumulated precipitation (click image for animation)
GEFS postage stamps: accumulated precipitation (click image for animation)
GEFS postage stamps: accumulated precipitation anomaly (click image for animation)
GEFS postage stamps: accumulated precipitation anomaly (click image for animation)
GEFS percent above/below/near normal
GEFS: percent of ensemble members with precipitation above/below/near normal (click image for animation)
GEFS percent above/below/near normal
GEFS: percent of ensemble members with precipitation above/below/near normal (click image for animation)
GEFS mean: MSLP, thickness, 6-hr precip (click image for animation)
GEFS mean: MSLP, thickness, 6-hr precip (click image for animation)
GEFS postage stamps: MSLP, thickness, 6-hr precip (click image for animation)
GEFS postage stamps: MSLP, thickness, 6-hr precip (click image for animation)
GEFS spaghetti plot: 500-hPa height (click image for animation)
GEFS spaghetti plot: 500-hPa height (click image for animation)
GEFS mean and spread: 500-hPa height (click image for animation)
GEFS mean and spread: 500-hPa height (click image for animation)
GEFS postage stamps: 500-mb heights, vorticity, and winds (click image for animation)
GEFS postage stamps: 500-mb heights, vorticity, and winds (click image for animation)
GEFS postage stamps: potential temperature on dynamic tropopause (click image for animation)
GEFS postage stamps: potential temperature on dynamic tropopause (click image for animation)
GEFS mean: Precipitable water (click image for animation)
GEFS mean: Precipitable water (click image for animation)
GEFS probability of MUCAPE > 500 J/kg and > 0.01
GEFS probability of MUCAPE > 500 J/kg and > 0.01" of precip (click image for animation)
GEFS probability of MUCAPE > 500 J/kg, surface to 500-hPa shear > 30 kt, and > 0.01
GEFS probability of MUCAPE > 500 J/kg, surface to 500-hPa shear > 30 kt, and > 0.01" of precip (click image for animation)

GEFS plumes: precipitation (click a location)
GEFS plumes: temperature (click a location)
GEFS plumes: wind speed (click a location)
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DISCLAIMER: The images and data on this site are intended for meteorological education and research purposes and, although they should generally be up to date, are not monitored at all times. Do not use for making decisions where money or lives are at stake. For official forecasts and warnings, visit the National Weather Service.