Increasing storm chances in Green Country this weekend into early next week

A complex multi-day severe weather pattern is arriving for Green Country this weekend through early next week.

Weekend Outlook Includes Severe Threats

This weekend, our atmospheric setup becomes a classic one for the middle of May with strong southwest flow aloft and a very humid, unstable airmass developing at the surface.

Saturday will start off dry, but a midday isolated shower or thunderstorm can’t be ruled out. Saturday morning lows will range from the 50s north of Tulsa to the mid 60s in southeastern Oklahoma, with afternoon highs in the lower to mid-80s.

Scattered thunderstorms are expected to quickly develop across far southeastern Oklahoma by late afternoon Saturday, with all modes of severe weather possible. How far north those storms will spread is a bit uncertain, but at least a few severe storms could reach northeastern Oklahoma by Saturday evening and would continue from late Saturday night into very early Sunday morning.

Thunderstorm chances still look to be the highest across Green Country Sunday and Monday. While specific timing may still fluctuate, multiple rounds of storms — including the potential for severe weather — are likely.

Storm Chances Increase Late Weekend into Monday

By Sunday, a very humid airmass will be in place across eastern Oklahoma while a dry line sharpens across western Oklahoma throughout the day.

A warm layer of air aloft (the “cap”) may be present, helping limit storm development in some locations, but by late Sunday afternoon and evening at least a few storms are expected to form near or east of the dry line, becoming supercells capable of producing all modes of severe weather as they move into parts of eastern Oklahoma Sunday evening.

This process will repeat on Monday, with our likely highest probability for storms reaching eastern Oklahoma. Once again, all modes of severe weather will be possible on Monday.

Main System Moves Out Tuesday

By Tuesday, the main upper-level system will eject across the central and northern High Plains, bringing yet another cold front through eastern Oklahoma sometime Tuesday.

More showers and storms are expected near that front on Tuesday, though the exact timing is still to be determined. As the front passes through sometime Tuesday afternoon and evening, a relative lull in precipitation is expected as some much-needed calmer weather moves back in through midweek.

The Morning Weather Podcast:

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Need-to-know severe Oklahoma weather prep:

🔗Severe weather safety: what you need to know to prepare

🔗Tornado Watch vs. Tornado Warning: what they mean and what to do

🔗Severe weather safety: what to do before, during, and after a storm

🔗Why registering your storm shelter in Oklahoma could save your life

🔗Floodwater kills more Oklahomans than tornadoes in the last decade, here's why

🔗'Turn around, don't drown': Flood safety tips for Oklahomans

🔗5 things to know: How Oklahomans can get federal money to install storm shelters

🔗Breaking down the SoonerSafe Rebate Program: Do I qualify for a storm shelter?

Hot weather safety:

🔗Oklahoma heat safety tips: How to spot and prevent heat illness

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Emergency Info: Outages Across Oklahoma:

Northeast Oklahoma has various power companies and electric cooperatives, many of which have overlapping areas of coverage. Below is a link to various outage maps.

1. PSO Outage Map
2. OG&E Outage Map
3. VVEC Outage Map
4. Indian Electric Cooperative (IEC) Outage Map
5. Oklahoma Association of Electric Cooperatives Outage Map — (Note: Several Smaller Co-ops Included)

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