Los Angeles

Excessive Heat Warning:

Issued at: 7:14 PM PDT on September 15, 2014, expires at: 7:00 PM PDT on September 16, 2014
  • ...Excessive heat warning remains in effect until 7 PM PDT Tuesday...
  • heat index...heat index values between 102 and 110 degrees are expected during the late morning through early evening hours through Tuesday. Overnight minimum heat index values will be mostly in the 70s. Heat index values represent how hot it really feels when relative humidity is factored in with actual air temperature.
  • Impacts...the combination of heat and humidity will create a dangerous situation in which heat illnesses are possible... especially for the elderly and youth. Precautionary/preparedness actions... Never...ever...leave people or pets in enclosed vehicles...even for a short period of time with the windows cracked open. Take extra precautions if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911.

Fire Weather Warning:

Issued at: 3:27 PM PDT on September 15, 2014, expires at: 9:00 PM PDT on September 16, 2014
  • ...Red flag warning in effect until 9 PM Tuesday for the Los Angeles and Ventura County mountains and adjacent foothills due to very hot and unstable conditions with moderately low humidities...
  • temperatures...highs generally between 95 and 105 degrees. Overnight lows in the 70s to around 80 across lower elevations.
  • Relative humidity...minimum humidity 12 to 20 percent today. Slightly higher Tuesday. Poor overnight recoveries in the mountains and adjacent foothills.
  • Fire behavior...any fire ignition will have the potential for large plume dominated growth over the mountains due to hot temperatures...low humidities...relatively light winds... instability...and extremely dry fuels.
  • Impacts...if fire ignition occurs...there could be rapid spread of wildfire that would lead to a threat to life and property. Precautionary/preparedness actions... A red flag warning means that critical fire weather conditions are expected. This in combination with very dry fuels could create extreme fire danger and/or fire behavior. Please advise the appropriate officials or fire crews in the field of this red flag warning.
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Local Weather Forecasts

Midday First Alert Forecast

Temperatures continue to rise in the afternoon as some places approach the 90s and triple digits.  Sunny skies accompany the heat as well as gusty winds in the afternoon.

Hot Start to Workweek

The heat continues into the beginning of this week as daytime highs at the coast climb into the 70s and 80s and in the valleys, up to 100 or more in some spots.  We'll see mostly…

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