WEDNESDAY · 5 PM
Mid to upper 80s across the metro
Downtown should be near 87°, with 85° at Douglasville and 87° at Kennesaw.
Ninety-six hours over Decatur
The last day as it was measured, the next three as they are forecast. Four maps on one timeline, drawn in the same colors, on the same ground, with the same twelve places as the Decatur plate.
Updated 9:33 PM Monday
Redrawn every hour: the latest radar scan, the newest station analysis, the National Blend, and the newest RRFS long run (four a day).
Three maps worth a look today
Chosen each morning from the day’s maps, with a sentence on why
How these maps are made
MEASURED
Radar and rain totals come from MRMS, NOAA’s mosaic of every radar in the country, checked against rain gauges. Temperature and wind come from the RTMA, updated every 15 minutes, and then from the URMA, which arrives about six hours later with more station reports folded in.
FORECAST
Temperature and rain come from the National Blend of Models, the guidance underneath the National Weather Service’s own forecast grids. Radar and wind gusts come from the RRFS, NOAA’s new 3 km model, which runs out 84 hours four times a day and becomes operational Oct. 14.
DRAWN ONE WAY
Every map uses the Forecast City theme: the atlas ground, the same twelve places, and color scales built so equal steps in weather look like equal steps in color.
See the map theme →
GOING DEEPER
Soundings, upper-air charts, model-by-model comparisons and every field in the Blend live on Forecast Eagle, the network’s site for weather enthusiasts.
Decatur on Forecast Eagle →Redrawn every hour from NOAA data: MRMS radar and rain, RTMA and URMA analyses, the National Blend of Models (7 PM Monday run) and the RRFS (2 PM Monday run). Headlines and stories are written by rules from the maps themselves. Relief from 3-arc-second terrain; roads from Census TIGER; rivers from Natural Earth.