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Tornado Watch
Real-time severe weather monitoring across the United States 🇺🇸 and Canada 🇨🇦.Real-time severe weather monitoring across the United States 🇺🇸 and Canada 🇨🇦 using official National Weather Service (NWS) and Environment and Climate Change Canada (ECCC) data. We track tornado watches, severe thunderstorms, and marine warnings that could potentially develop into tornadoes to keep communities prepared and informed.
Areas Affected
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Last Updated
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Data Source
🇺🇸 NWS
🇨🇦 ECCC
Tornado Watch
This page monitors tornado watches, severe thunderstorms, and special marine warnings that could develop into tornadoes. These are early indications about conditions favorable for tornado formation.
For active tornado warnings (confirmed tornadoes on the ground or detected by radar), visit our main tornado monitoring system.
View Active Tornado WarningsView Tornado WarningsNorth American Severe Weather
3/3Filter alerts from US (NWS) and Canadian (ECCC) weather services
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Live Severe Weather Map
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Active Severe Weather Alerts
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Expired Severe Weather Alerts Map
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Expired Severe Weather Alerts
0 Expired Alerts
Updated: Never
These alerts have expired in the last 24 hours and are no longer active. They provide historical context of recent severe weather in the area.
Special Marine WarningExpired
Cancelled: Never
Issued: Never
Cancelled: Never
Country
🇺🇸
Waters:
IL
Marine Areas Affected:
Gary to Burns Harbor IN; Burns Harbor to Michigan City IN; Lake Michigan from Wilmette Harbor to Michigan City
Country
🇺🇸
Waters:
IL
Areas:
Gary to Burns Harbor IN; Burns Harbor to Michigan City IN; Lake Michigan from Wilmette Harbor to Michigan City
Marine Hazard Information:
At 1207 PM CST, a lake effect snow band capable of producing waterspouts was located near Marina Shores at Dune Harbor, or near Indiana Harbor, moving south at 25 knots.Special Marine WarningExpired
Cancelled: Never
Issued: Never
Cancelled: Never
Country
🇺🇸
Waters:
NC
Marine Areas Affected:
S of Ocracoke Inlet NC to Cape Lookout NC out to 20 nm; S of Cape Lookout NC to Surf City NC out to 20 nm
Country
🇺🇸
Waters:
NC
Areas:
S of Ocracoke Inlet NC to Cape Lookout NC out to 20 nm; S of Cape Lookout NC to Surf City NC out to 20 nm
Marine Hazard Information:
At 125 AM EST, a strong thunderstorm was located near Ar355, or near Topsail Boxcars, moving northeast at 35 knots.Special Marine WarningExpired
Cancelled: Never
Issued: Never
Cancelled: Never
Country
🇺🇸
Waters:
NC
Marine Areas Affected:
Coastal waters from Surf City to Cape Fear NC out 20 nm
Country
🇺🇸
Waters:
NC
Areas:
Coastal waters from Surf City to Cape Fear NC out 20 nm
Marine Hazard Information:
At 111 AM EST, a strong thunderstorm was located near 10 Mile Rocks, moving northeast at 50 knots.Special Marine WarningExpired
Expired: Never
Issued: Never
Expired: Never
Country
🇺🇸
Waters:
NC
Marine Areas Affected:
Coastal waters from Surf City to Cape Fear NC out 20 nm
Country
🇺🇸
Waters:
NC
Areas:
Coastal waters from Surf City to Cape Fear NC out 20 nm
Marine Hazard Information:
At 1240 AM EST, a strong thunderstorm was located over Caswell Beach, moving northeast at 55 knots.Special Marine WarningExpired
Expired: Never
Issued: Never
Expired: Never
Country
🇺🇸
Waters:
NJ
Marine Areas Affected:
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm; Waters from Sandy Hook NJ to Manasquan Inlet NJ out 20 to 40 nm; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40 nm
Country
🇺🇸
Waters:
NJ
Areas:
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm; Waters from Sandy Hook NJ to Manasquan Inlet NJ out 20 to 40 nm; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40 nm
Marine Hazard Information:
At 1227 AM EST, showers were located along a line extending from near Barnegat Light Reef to 9 nm east of Garden State North Reef, moving northeast at 35 knots.Special Marine WarningExpired
Expired: Never
Issued: Never
Expired: Never
Country
🇺🇸
Waters:
NC
Marine Areas Affected:
Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm; Coastal waters from Little River Inlet to Murrells Inlet SC out 20 nm; Coastal waters from Murrells Inlet to South Santee River SC out 20 nm; Waters from Little River Inlet to Murrells Inlet SC from 20 to 40 nm
Country
🇺🇸
Waters:
NC
Areas:
Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm; Coastal waters from Little River Inlet to Murrells Inlet SC out 20 nm; Coastal waters from Murrells Inlet to South Santee River SC out 20 nm; Waters from Little River Inlet to Murrells Inlet SC from 20 to 40 nm
Marine Hazard Information:
At 1149 PM EST, a strong thunderstorm was located over Ten Mile Reef, moving northeast at 50 knots.Special Marine WarningExpired
Expired: Never
Issued: Never
Expired: Never
Country
🇺🇸
Waters:
NJ
Marine Areas Affected:
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm; Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm; Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40 nm; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ out 20 to 40 nm from 20 to 40 NM; Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 nm
Country
🇺🇸
Waters:
NJ
Areas:
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm; Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm; Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40 nm; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ out 20 to 40 nm from 20 to 40 NM; Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 nm
Marine Hazard Information:
At 1124 PM EST, a strong thunderstorm was located near Ocean City Reef, moving northeast at 45 knots.Today's Outlook
Today's Severe Weather Outlook (Loading date...)
Today's Forecast
This outlook map shows areas where severe weather (primarily damaging winds) is most likely to occur today, based on data from NOAA's Storm Prediction Center. Risk levels range from Marginal (MRGL) to High, with higher percentages indicating greater severe weather probability.
View official SPC Day 1 OutlookTomorrow's Outlook
Tomorrow's Severe Weather Outlook (Loading date...)
Tomorrow's Forecast
This outlook map shows areas where severe weather (primarily damaging winds) is most likely to occur on Day 2 (tomorrow), based on data from NOAA's Storm Prediction Center. Risk levels range from Marginal (MRGL) to High, with higher percentages indicating greater severe weather probability.
View official SPC Day 2 OutlookAbout Tornado Watch Tracking
Our tornado watch monitoring system tracks potentially tornadic weather conditions across North America, including tornado watches, severe thunderstorms, and marine warnings. Real-time data comes from the National Weather Service (US) and Environment and Climate Change Canada (ECCC), updating every 60 seconds.
Types of Alerts We Track
Tornado Watch
Conditions are favorable for tornado development in the watch area.
- Typically covers multiple counties or states
- Usually issued 4-8 hours in advance
- Time to prepare and stay weather-aware
- Monitor for possible warnings
Severe Thunderstorm Warning
Storm capable of producing damaging winds and/or large hail.
- May develop rotation and spawn tornadoes
- Typically 30-60 minute duration
- Covers specific storm areas
- Requires immediate attention
Special Marine Warning
Hazardous marine conditions including waterspouts.
- Waterspouts can move onshore as tornadoes
- Affects coastal and marine areas
- Important for maritime safety
- Often precedes tornado warnings
Mesoscale Discussion
Technical updates about storm development and potential.
- Forecaster insights on storm evolution
- Probability of severe weather
- Timing of watch/warning issuance
- Areas of greatest concern
How to Use This Page
This page serves as an early warning system for potential tornado development. While our main page focuses on active tornado warnings, here you'll find the conditions that often precede tornado formation:
- Monitor tornado watches to know when conditions are favorable
- Track severe thunderstorms that could develop rotation
- Watch for special marine warnings that may indicate waterspouts
- Follow storm progression and intensification
60-Second Updates
Fresh data from NWS & ECCC every 60 seconds
Precise Mapping
Exact alert areas with radar overlay
Official Source
Official sources: NWS (US) & ECCC (Canada)
