National City, CA Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards National City.

Use the Radar Maps link provided to understand the trajectory of a storm.

Lake Wind Advisory issued August 31 at 1:21PM PDT until September 1 at 8:00PM PDT by NWS Reno NV

* WHAT...Southwest winds 15 to 25 mph with gusts up to 35 mph. Wave heights up to 3 feet on Lake Tahoe and Pyramid Lake. * WHERE...Greater Lake Tahoe Area, Lassen-Eastern Plumas-Eastern Sierra Counties, Greater Reno-Carson City-Minden Area, and Western Nevada Basin and Range including: Lake Tahoe, Pyramid Lake, Eagle Lake, Honey Lake, Lake Davis, Frenchman Lake, Stampede Reservoir, Donner Lake, Prosser and Boca Reservoirs, Washoe Lake, and Topaz Lake. * WHEN...From 11 AM to 8 PM PDT Tuesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft.

Red Flag Warning issued August 31 at 12:30PM PDT until August 31 at 8:00PM PDT by NWS Medford OR

* AFFECTED AREA...In California...Scott Valley in Fire Weather Zone 280, Fire Weather Zone 281, Fire Weather Zone 284 except the southeast portion of this zone, and Fire Weather Zone 285. In Oregon...Fire Weather Zone 624, except the Highway 97 corridor from Modoc Point to Chemult. * WIND...South winds 10 to 20 mph with gusts to 30 mph in the Scott Valley, and 15 to 25 mph with gusts to 35 mph in the Shasta Valley. Elsewhere, southwest winds 10 to 20 mph with gusts to 30 mph. * HUMIDITY...Minimum humidity 9 to 15 percent. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr

Frost Advisory issued August 31 at 12:19PM PDT until September 2 at 8:00AM PDT by NWS Medford OR

* WHAT...Temperatures between 38 and 33 degrees will result in frost formation. * WHERE...In California, Modoc County including the communities of Alturas, Likely, Canby, and Lookout. In Oregon, parts of Klamath County including the communities of Crescent, Chemult, Sprague River, Beatty, Bly, Dairy, Bonanza, and Lorella. Additionally, parts of Lake County including Fort Rock and across the Christmas Valley, Silver Lake, and areas just east of Lakeview. * WHEN...From 4 AM to 8 AM PDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. Animals who are not acclimated to colder temperatures may be harmed.

Red Flag Warning issued August 31 at 11:42AM PDT until September 1 at 11:00PM PDT by NWS Reno NV

The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 11 AM to 11 PM PDT Tuesday. The Fire Weather Watch is no longer in effect. * CHANGES...The Fire Weather Watch has been upgraded to a Red Flag Warning. * Affected Area...Fire Weather Zone 270 Surprise Valley California, Fire Weather Zone 278 Eastern Lassen County, Fire Weather Zone 458 Northern Washoe County, including the S-1 Vya Fire. * Winds...Southwest 15 to 25 mph with gusts of 30 to 40 mph. Ridgetop gusts up to 45 mph. Winds shift to westerly in the late afternoon and evening. * Humidity...RH reductions to 12 to 17 percent in the afternoon. Nighttime recoveries of 50 to 80 percent Wednesday morning. * Duration...3 to 6 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them.

Beach Hazards Statement issued August 30 at 1:16PM PDT until August 31 at 3:00PM PDT by NWS Los Angeles/Oxnard CA

* WHAT...Dangerous rip currents and breaking waves with isolated sets up to 6 feet due to elevated surf from southerly swells. * WHERE...Ventura County Beaches, Malibu Coast and Los Angeles County Beaches. * WHEN...Through Monday afternoon. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. * ADDITIONAL DETAILS...A series of southerly swells will continue to impact Southern California through much of next week.