Expected

* WHAT...Dangerously hot conditions with high temperatures in the mid 90s to 105 below 7000 feet expected. * WHERE...Riverside County Mountains. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with high temperatures of 100 to 108 expected. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...From noon Saturday to midnight MDT Saturday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Low temperatures are expected to be in the 70s for some locations east of Billings Saturday night bringing limited overnight relief. Sunday will be a little cooler but still hot.

...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri... Meramec River near Steelville. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast due to heavy rain. * WHERE...Meramec River near Steelville. * WHEN...From this evening to late tonight. * ADDITIONAL DETAILS... - At 9:15 PM CDT Friday the stage was 10.2 feet. - Forecast...No forecast is available for this location.

...CRITICAL FIRE WEATHER CONCERNS THIS WEEKEND... * WIND...Southeast winds on Saturday turning to the Northwest Sunday with speeds at 15-25 mph with gusts to 35 mph. * HUMIDITY...8-20%, 20-35% Fire Weather Zone 120. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning.

* WHAT...Dangerously hot conditions with temperatures of 95 to 110 expected. * WHERE...A large portion of southwest California including the coastal ranges and adjacent foothills, as well as the coastal valleys. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Heat hazards may extend into next week for portions of the region. Drink plenty of fluids, stay in an air-conditioned room, stay out of

* WHAT...Dangerously hot conditions with temperatures of 105 to 112 expected. * WHERE...Antelope Valley, Eastern Antelope Valley Foothills, and Western Antelope Valley Foothills. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Heat hazards may extend into next week for portions of the region. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with temperatures of 95 to 106 expected. * WHERE...Interstate 5 Corridor and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Heat hazards may extend into next week for portions of the region. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with highs 110 to 120 degrees across the Mojave Desert. Highs 100 to 110 degrees across most of the southern Great Basin and Arizona Strip. Little to no overnight relief is expected, particularly in the Mojave Desert where lows of 80 to 95 degrees are forecast. This will result in Major-to-Extreme Heat Risk. * WHERE...Portions of northwest Arizona, southeast California, and south central and southern Nevada. * WHEN...Until 8 PM PDT /8 PM MST/ Sunday.

A strong cold front will sweep across the Inland Northwest Saturday. Very warm dry conditions and gusty winds will contribute to rapid fire spread for any new or ongoing fires. * Affected Area: Northern and Central Idaho Panhandle (Zone 101), Okanogan Highlands and Kettle Mountains (Zone 699), Selkirk Mountains of Northeast Washington (Zone 700) and Foothills of Northeast Washington (Zone 701). * Winds: Southwest 10 to 20 mph with gusts up to 40 mph. * Relative Humidities: 15 to 27 percent.