Moderate

* WHAT...For the Heat Advisory, high temperatures in the 90s expected. For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 104 expected. * WHERE...San Diego County Mountains County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.

* WHAT...For the Heat Advisory, high temperatures in the 90s in the western valleys to around 105 in the far inland valleys. For the Extreme Heat Warning, dangerously hot conditions with high temperatures in he upper 90s to 109 expected. * WHERE...San Diego County Valleys County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.

* WHAT...For the Heat Advisory, high temperatures in the 90s expected. For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 105 expected. * WHERE...Santa Ana Mountains and Foothills County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.

* WHAT...For the Heat Advisory, temperatures up to 106. For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 110 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.

* WHAT...For the Heat Advisory, high temperatures in the 90s expected. For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 104 expected. * WHERE...Orange County Inland Areas County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.

* WHAT...Temperatures in the mid to upper 90s below 5000 ft MSL. * WHERE...San Bernardino County Mountains below 6000 ft. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. Increasing temperatures into the middle of next week will increase the threat of heat-related illness across populations.

* WHAT...High temperatures in the mid 80s near the beaches to the lower to mid 90s for the mesas and other higher coastal terrain expected. * WHERE...San Diego County Coastal Areas County. * WHEN...From 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Visibility one quarter mile or less at times in dense fog. * WHERE...Duplin and Inland Onslow Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If equipped, use fog lights. Do not use highbeams.

* WHAT...Heat index values up to 108 expected. * WHERE...Portions of east central, southeast, southern, and southwest Oklahoma and northern Texas. * WHEN...From 1 PM this afternoon to 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and

* WHAT...Heat index values up to 109 expected. * WHERE...Cleveland, Grady, McClain, Pottawatomie, Seminole, Hughes, Caddo, Beckham, and Washita Counties. * WHEN...From 1 PM this afternoon to 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and