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Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Important Definitions

 

Watch: Issued when conditions are favorable for a particular severe weather hazard within the next several hours.

Warning: Issued when a particular severe weather hazard is imminent or occurring. Take immediate action to protect life and property.

 

Storm Prediction Center Outlook Categories (click to enlarge):

SPC Categories - Click to enlarge
 

Severe Thunderstorm/Tornado Safety Basics:

1. Get In:

  • Put as many walls between you and the outside as possible.
  • Stay Away from doors and windows.

2. Get Down:

  • Get to the lowest floor possible. Basements are best during tornadic or very high wind situations.

3. Cover Up

4. Remain Calm

More details can be found within this brochure: pdf version  

 

Types of Severe Weather:

 

Tornado: A violently rotating column of air extending from a thunderstorm cloud to the ground. The Enhanced Fujita Tornado Intensity Scale is used to categorize tornadoes.

Severe Thunderstorm: A thunderstorm that produces a tornado, damaging winds of 58 mph or higher, and/or quarter (1 inch) size hail or larger.

Flash Flood: a flood which will create an immediate threat to life or property. Safety rules for flash flooding can be found with this brochure (15MB pdf)

High Wind: A High Wind Warning is issued for sustained winds of 40 mph or wind gusts of 58 mph

 

Be Prepared with NOAA All Hazards Radio

  • Your single source for comprehensive weather and emergency information!

More Information:

 

Vulnerable Population Resources

Safety - Deaf and Hard of Hearing
Safety - Intellectual Disabilities
Seguridad Meteorológica (Español)
Sobre Embajadores Weather-Ready Nation (Español)

(If the links below do not work, please visit the NWS Publications Page)

Tornadoes

Thunderstorms, Lightning, and Tornadoes - Natures Most Violent Storms
Enhanced Fujita Tornado Intensity Scale

Thunderstorms and Lightning

Thunderstorms, Lightning, and Tornadoes - Natures Most Violent Storms
Lightning Safety Page
Storm Spotter's Field Guide

Flooding/Flash Flooding

Flash Floods and Floods - The Awesome Power (15MB pdf)

Winter Weather

Winter Storms, The Deceptive Killers (large PDF)

Hurricanes and Tropical Storms

Hurricane Safety  (PDF)
Saffir/Simpson Hurricane Scale
Hurricane Names
National Hurricane Center

Summer Heat

All About Heat Waves
Heat Index Chart

Drought

Drought Information Center