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High Pressure Systems

Temperature Records Temperature Trends Temperature Anomalies Temperature Variations Climate Effects Italy Impact on Environment Moisture Sources Omega Blocking Pattern Fog Cold Fronts Heat Waves Thunderstorm Risks Azores High Temperature Effects Cirrus Clouds Heatwaves Temperature Increases Wind Dynamics Heat Index Bermuda High Fog Development Hoch Ines Heat Domes Dry Weather in NRW

December Warmth Puts Phoenix on Record Track as High-Pressure Ridge Persists

Forecasters tie the unusual spell to a stubborn ridge that keeps the Southwest unseasonably warm through next week.

Phoenix Reaches 91 as Slight Late-Week Cooldown Nears

Atlantic Hurricane Season Winds Down With No Development Expected This Week

High Pressure Extends Sunny, Dry Week in Northeast Ohio

Phoenix Records 118°F, Its Hottest August Day in 120 Years