Heat and Red Flag warnings issued

Heat and Red Flag warnings issued

The National Weather Service has issued both an Excessive Heat Warning and a Red Flag Warning throughout San Diego County. Santa Ana winds and strong high pressure aloft will bring hot weather through Wednesday. Monday and Tuesday will be the hottest days with highs above 100 degrees for western valley and inland coastal areas. An Excessive Heat Warning remains in effect until 8 p.m. Tuesday. Temperatures will vary from the upper 90s to 105 farther inland and near the mesas, according to the National Weather Service.

This week, the last week of October, marks the anniversary of two major wildfires that broke out in San Diego, one in 2003 which destroyed nearly 350 homes in Scripps Ranch alone, and another in 2007 which brought about an evacuation of Scripps Ranch.

Red Flag Warning
The Red Flag Warning remains in effect until 6 p.m. Wednesday. Conditions for critical fire behavior will continue through early Tuesday evening. Minimum humidity values will be around 5 to 10 percent each day. Any fires that develop will likely spread rapidly.

A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior.

Excessive Heat Warning
An Excessive Heat Warning means that a prolonged period of dangerously hot temperatures will occur. The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are likely. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun and check up on relatives and neighbors.

Heat related illness is likely for those involved in strenuous outdoor activity, or those with health conditions who do not have adequate access to air conditioning. If untreated, heat illness events could be fatal.

Wind Advisory
A Wind Advisory has also been issued for some parts of Southern California. A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Expect weaker winds for Thursday and Friday with a slow cooling trend.

Gusty Santa Ana winds will become gradually stronger and more widespread into Tuesday. Winds will become more localized and not as strong for Tuesday night into Wednesday. Very low daytime humidity will continue into Wednesday with the poorest overnight recovery near the coastal foothills. Weaker winds are expected for Thursday and Friday with slow cooling spreading inland and with a gradual recovery of humidity.

Constant northeast winds are expected to be around 20 to 30 mph with gusts reaching 50 mph. Stronger winds are expected Monday night and Tuesday between 25 to 35 mph with gusts up to 55 mph and isolated gusts to 65 mph. Winds will not be quite as strong nor widespread for Tuesday night into Wednesday morning with areas of northeast winds 15 to 25 mph with gusts to 45 mph.

The San Diego Unified School District schools in Scripps Ranch are operating under hot weather protocol. The schools will keep outdoor activities to a minimum and students will be kept indoors for recess. The district recommends parents pack extra water for students this week to keep them hydrated. Public schools will be dismissed at regular times in Scripps Ranch on Monday. Parents are advised to keep an eye out for messages in case anything changes for upcoming days this week.

Monitor possible fire areas
UC San Diego’s Scripps Institution of Oceanography has placed 19 cameras at rural locations throughout San Diego County. The public can monitor possible fire activity by accessing the views from these cameras at The cameras are part of the High Performance Wireless Research and Education Network (HPWREN), a UCSD partnership project led by the San Diego Supercomputer Center and the Scripps Institution of Oceanography’s Institute of Geophysics and Planetary Physics. HPWREN supports internet-data applications in the areas of research, education and public safety.

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