Weather Programmer

Exploring the intersection of meteorology and applied data science in an operational setting.

Diagnostics & analogs

Understand the drivers

Interactive views of tropical forcing, polar vortex state, and teleconnection analogs.

Polar Vortex Diagnostics

Arctic polar-cap structure, vortex strength, and recent sudden stratospheric warming context.

Tropical Forcing

200 hPa velocity potential anomalies and the tropical convective footprint driving midlatitude response.

Subseasonal Forcing

Lead-dependent Z500 regressions onto tropical divergence phases for subseasonal guidance.

Low Frequency Forcing

Monthly-scale teleconnection patterns tied to tropical convective phases and climatological context.

Forecasts

Look ahead

Temperature outlooks for weeks 3–6 and the seasonal horizon.

Weeks 3–6

Subseasonal temperature anomaly forecasts for the U.S. and Europe, updated with the latest guidance.

Seasonal

Longer-range outlooks with polar vortex and large-scale pattern context for the season ahead.