What is an 'omega block' and how will it affect Texas' weather
May 5, 2025 / /
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AUSTIN (KXAN) — An omega blocking pattern is named after the Greek letter (Ω) and slows down the ordinary west-to-east flow of weather systems across the country.
The setup is shaped like the letter, with a stationary high pressure in the northern Plains, surrounded by two ‘closed’ low pressure systems.
This pattern prolongs weather patterns, often leading to multiple days or weeks of the same conditions.
Tommy’s Travel Forecast: Omega block increases storm chances
If the high pressure ridging sits over Texas, you can expect persistent heat with clear skies. However, if the low pressure trough dominates, it can lead to extended heavy rainfall and flooding in the Lone Star State.
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