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2 days ago · Find the latest forecasts and warnings for severe thunderstorms, tornadoes, wildfires, and other hazards across the U.S. and Canada. See the risk categories, maps, products, and publications from the Storm Prediction Center.
- SPC Day 1 Outlook
May 15, 2024 1630 UTC Day 1 Convective Outlook. Pop. SPC AC...
- Forecast Tools
Storm Prediction Center Forecast Tools Page. Severe weather,...
- Thunderstorm Outlook
Storm Reports Storm Reports Dev. NWS Hazards Map National...
- NEWS
The Storm Prediction Center is one of the initial...
- SPC PRODUCTS
The Thunderstorm Outlooks depict the probability of...
- Convective Outlooks
Current Day 4-8 Outlook. Forecaster: Mosier. Issued:...
- RESEARCH
Storm Prediction Center Publications. Complete List Of...
Revisiting The 3-4 April 1974 Super Outbreak of Tornadoes
· The March 1994 Tornado Outbreak in The Southeast U.S. From an SPC Perspective
· Eta Model Storm-relative Winds Associated With Tornadic and Nontornadic Supercells
· Initiation of Storm a (3 May 99) Along a Possible Horizontal Convective Roll
· Verification of Probabilistic Severe Storm Forecasts at The SPC
- Classic Home Page
Storm Prediction Center Home Page. Notice: Starting November...
- Severe Thunderstorm/Tornado Watches
Storm Reports Storm Reports Dev. NWS Hazards Map National...
- Mesoscale Discussions
All times are UTC Notice: The responsibility for Heavy Rain...
- SPC Day 1 Outlook
- What Is Severe Weather?
- Convective Outlooks
- Mesoscale Discussions
- Severe Weather Watches
- Fire Weather Outlooks
- Statistics
- GeneratedCaptionsTabForHeroSec
The NWS defines a severe thunderstorm as any storm that produces one or more of the following elements: 1. A tornado. 2. Damaging winds or speeds of 58 mph (50 knots) or greater. 3. Hail 1 inch in diameter or larger. The SPC further defines significant severe thunderstorms as any storm that produce one or more of the following elements: 1. A tornad...
SPC issues Day 1, Day 2, and Day 3Convective Outlooks that depict non-severe thunderstorm areas and severe thunderstorm threats across the contiguous United States, along with a text narrative. The categorical forecast specifies the level of the overall severe weather threat via numbers (e.g., 5),descriptive labeling (e.g., HIGH), and colors (e.g.,...
SPC issues Mesoscale Discussions(MDs or MCDs) that focus on severe thunderstorm potential over the continental U.S. for the next 6 hours with an emphasison the first 1-3 hours. SPC also issues MDs for mesoscale aspects of hazardous winter weather events including heavy snow, blizzards, and freezing rain.All MDs contain an areas affected line, conce...
When conditions become favorable for organized severe thunderstorms or tornadoes to develop, the SPC issues a Severe Thunderstorm or Tornado Watch.A tornado can occur in either type of watch, but Tornado Watches are issued when conditions are favorable for either multiple tornadoes or a single intense tornado. A Severe ThunderstormWatch is issued w...
The Fire Weather Outlooks are intended to delineate areas of the continental U.S. where pre-existing fuel conditions, combined with forecast weather conditions during thenext 8 days, will result in a significant threat for the ignition and/or spread of wildfires. This product is designed for use in the NWS, as well as other federal,state, and local...
SPC automatically compiles preliminary local storm reports (LSRs) issued by local NWS offices. This data is available in multiple formats on thispage. For each 24 hour period beginning at 1200 UTC on the valid day, a graphic and listing of all continental U.S. preliminary severe weather reportsthat SPC received is available. Since the logging proce...
Learn about the mission, products, and methods of the Storm Prediction Center (SPC), part of the National Weather Service (NWS) and the National Centers for Environmental Prediction (NCEP). Find out how SPC issues convective outlooks, severe weather risks, and probabilities for thunderstorms, tornadoes, hail, and wind events across the contiguous United States.
National Weather Service. Location Help. Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Thursday. A Moderate Risk (Level 3 of 4) Excessive Rainfall Outlook and Flood Watches have been issued for portions of east Texas into Louisiana Thursday where flash, urban, and riverine flooding is possible.
1 day ago · View and filter storm reports from various sources and data types across the US. Customize the display by selecting manual or automatic refresh, update interval, data filters, time zone and more.
