Tornado Season Guide
Everything you need to know about tornado season in the United States. Understanding tornado risks, preparation tips, and real-time tracking to keep you and your family safe.
~1,200
Tornadoes per Year (US)
Apr-Jun
Peak Season (Plains)
4-6 PM
Peak Time of Day
Act now
When a Warning Covers You
Understanding the Enhanced Fujita Scale
The Enhanced Fujita (EF) Scale rates tornado intensity based on damage produced, which correlates with estimated wind speeds. Most tornadoes are weak (EF0-EF1), but even these can cause significant damage and pose danger to life. Ratings are assigned after a damage survey, not while the tornado is on the ground.
EF0
65-85 mph
Light damage: broken branches, shallow-rooted trees pushed over
EF1
86-110 mph
Moderate damage: roof damage, mobile homes overturned
EF2
111-135 mph
Significant damage: roofs torn off, large trees snapped
EF3
136-165 mph
Severe damage: entire floors destroyed, heavy cars thrown
EF4
166-200 mph
Devastating: well-built homes leveled, cars become missiles
EF5
200+ mph
Incredible: strong frame houses swept away, trees debarked
Regional Tornado Seasons
Tornado risk varies by region and time of year. Understanding your local tornado season helps you stay prepared during the highest-risk periods.
Southern Plains (Tornado Alley)
Texas, Oklahoma, Kansas
Peak season: April through June. This region sees the most tornadoes in the US, with May typically being the most active month. Late afternoon and evening storms are most common.
Southeast (Dixie Alley)
Alabama, Mississippi, Tennessee, Georgia
Peak season: March through May, with a secondary peak in November. Nocturnal tornadoes are more common here, making overnight alerts critical.
Upper Midwest
Nebraska, Iowa, Minnesota, Wisconsin
Peak season: May through July. Tornadoes occur later in the year as warm, moist air from the Gulf pushes northward. June is typically the most active month.
Florida
Florida
Florida has high tornado frequency but most are weak (EF0-EF1). Peak season: June through September during afternoon thunderstorms. Tropical systems can also spawn tornadoes.
Tornado Safety Checklist
Before Tornado Season
- ✓Identify your shelter location (basement, storm cellar, or interior room)
- ✓Practice tornado drills with your family
- ✓Prepare an emergency kit with water, flashlight, first aid
- ✓Install a weather app with push alerts for warnings
- ✓Know the difference between a watch and a warning
- ✓Have a NOAA Weather Radio with battery backup
During a Tornado Warning
- ✓Take shelter immediately in your pre-identified location
- ✓Get to the lowest floor, interior room away from windows
- ✓Cover your head and neck with your arms
- ✓Get under sturdy furniture if possible
- ✓Stay away from windows, doors, and exterior walls
- ✓If in a vehicle, abandon it for a sturdy building if possible
Never shelter under an overpass or bridge during a tornado. Wind speeds accelerate through these openings, making them extremely dangerous.
Track Severe Weather with WeatherAI
Stay ahead of dangerous storms with professional-grade severe weather tracking. Real-time radar, tornado watch/warning alerts, and AI-powered explanations of storm threats.
Push Alert Warnings
Tornado watches and warnings for your saved locations arrive as push notifications once the NWS issues them. Turn on Critical Alerts on iPhone or iPad and tornado warnings can sound through silent mode and Focus; watches stay normal notifications. Keep a weather radio or wireless emergency alerts as your primary overnight warning.
Professional Radar
NEXRAD Level 3 radar (Pro, US sites) lets you follow storm cells as they move, refreshed on the source's own schedule. See rotation, hail cores, and storm motion.
AI Storm Explanations
Ask WeatherAI to explain what's happening with incoming storms. Get plain-language threat assessments and timing guidance.
Tornado Warning Signs
While technology provides the best warning, knowing natural warning signs can provide extra seconds of protection. Several of them, like large hail and a lowering wall cloud, point to the rotating updraft that produces tornadoes:
Dark, Green Sky
A greenish tint often indicates large hail and severe storm potential
Large Hail
Tornadoes often accompany storms producing quarter-sized or larger hail
Roaring Sound
A continuous rumble (like a freight train) that doesn't fade like thunder
Rotating Clouds
A visible rotating wall cloud or lowering at the base of a thunderstorm
Debris Cloud
A cloud of debris at ground level even if funnel isn't visible
Sudden Calm
Eerie calm after a hailstorm can precede tornado development
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Glossary
Supercell
A severe thunderstorm characterized by a deep, persistently rotating updraft called a mesocyclone.
Glossary
Hook Echo
A distinctive hook-shaped radar signature on the right rear of a supercell thunderstorm, indicating rotation and high tornado probability.
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Watch South Texas storm cells develop and move with live radar and local alerting.
Frequently Asked Questions
When is tornado season?
What is the difference between a tornado watch and warning?
What is Tornado Alley?
Where should I shelter during a tornado?
How can I track tornadoes on my phone?
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Professional-grade tools for storm targeting, radar analysis, and real-time tracking.
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Emergency Preparedness
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SPC outlooks, watches, warnings, and storm signals in one workflow.
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