Severe

Significant threat to life or property

Mississippi Severe Flash Flood Warning | Effective 06/18/2026 13:48

At 348 PM CDT, local law enforcement reported thunderstorms producing<br /> heavy rain in reported multiple streets flooded in Gulfport and<br /> Biloxi. Between 4 and 8 inches of rain have fallen. Additional<br /> rainfall amounts up to 1 inch are possible in the warned area. Flash<br /> flooding is already occurring. HAZARD...Life threatening flash flooding. Thunderstorms producing<br /> flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban<br /> areas, highways, streets and underpasses.

California, Nevada Severe Red Flag Warning | Effective 06/18/2026 13:49

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT FRIDAY FOR<br /> THUNDERSTORMS AND STRONG OUTFLOW WINDS FOR THE SIERRA FRONT... The National Weather Service in Reno has issued a Red Flag<br /> Warning for thunderstorms and strong outflow winds, which is in<br /> effect from noon to 9 PM PDT Friday. * CHANGES...A new Red Flag Warning has been issued in the Sierra<br /> Front for Friday afternoon when additional thunderstorms renew<br /> a risk of dry lightning and strong outflow winds. * Affected Area...Fire Weather Zone 420 Northern Sierra Front<br />

California, Nevada Severe Red Flag Warning | Effective 06/18/2026 13:49

The National Weather Service in Reno has issued a Red Flag<br /> Warning for thunderstorms and strong outflow winds, which is in<br /> effect from 8 AM to 11 PM PDT Friday. The Fire Weather Watch is<br /> no longer in effect. * CHANGES...The Fire Weather Watch has been upgraded to a Red<br /> Flag Warning. * Affected Area...Fire Weather Zone 270 Surprise Valley<br /> California, Fire Weather Zone 278 Eastern Lassen County, Fire<br /> Weather Zone 458 Northern Washoe County. * Thunderstorms...Isolated dry lightning will be possible Friday<br />

California, Nevada Severe Red Flag Warning | Effective 06/18/2026 13:49

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT FRIDAY FOR<br /> THUNDERSTORMS AND STRONG OUTFLOW WINDS FOR THE SIERRA FRONT... The National Weather Service in Reno has issued a Red Flag<br /> Warning for thunderstorms and strong outflow winds, which is in<br /> effect from noon to 9 PM PDT Friday. * CHANGES...A new Red Flag Warning has been issued in the Sierra<br /> Front for Friday afternoon when additional thunderstorms renew<br /> a risk of dry lightning and strong outflow winds. * Affected Area...Fire Weather Zone 420 Northern Sierra Front<br />

California, Nevada Severe Fire Weather Watch | Effective 06/18/2026 13:49

The Fire Weather Watch has been replaced. Please see the latest information from NWS Reno NV on this developing situation.<br /> Avoid outdoor activities that can cause a spark near dry<br /> vegetation, such as yard work, target shooting, or campfires.<br /> Follow local fire restrictions. Check weather.gov/reno for<br /> updates and livingwithfire.info for preparedness tips.

Nevada Severe Red Flag Warning | Effective 06/18/2026 13:49

The National Weather Service in Reno has issued a Red Flag<br /> Warning for thunderstorms and strong outflow winds, which is in<br /> effect from noon to 11 PM PDT Friday. The Fire Weather Watch is<br /> no longer in effect. * CHANGES...The Fire Weather Watch has been upgraded to a Red Flag<br /> Warning. The start time of the Red Flag Warning has been delayed<br /> to Friday afternoon as thunderstorm potential Friday morning has<br /> decreased. * Affected Area...Fire Weather Zone 423 West Humboldt Basin in<br /> Pershing County.

Nevada Severe Red Flag Warning | Effective 06/18/2026 13:49

The National Weather Service in Reno has issued a Red Flag<br /> Warning for thunderstorms and strong outflow winds, which is in<br /> effect from noon to 11 PM PDT Friday. * Affected Area...Fire Weather Zone 429 Lahontan Basin including<br /> Churchill and Eastern Mineral Counties. * Thunderstorms...A mix of wet and dry thunderstorms Friday<br /> afternoon. Coverage will be focused in Churchill County with<br /> isolated thunderstorms possible in eastern Mineral County. * Outflow Winds...Gusty and erratic thunderstorm outflow winds,<br />

Nevada Severe Fire Weather Watch | Effective 06/18/2026 13:49

The Fire Weather Watch has been replaced. Please see the latest information from NWS Reno NV on this developing situation.<br /> Avoid outdoor activities that can cause a spark near dry<br /> vegetation, such as yard work, target shooting, or campfires.<br /> Follow local fire restrictions. Check weather.gov/reno for<br /> updates and livingwithfire.info for preparedness tips.

Louisiana Severe Flood Warning | Effective 06/18/2026 13:50

...The Flood Warning continues for the following rivers in<br /> Louisiana... Tangipahoa River Near Robert affecting Tangipahoa Parish. For the Tangipahoa River...including Osyka, Kentwood, Tangi. River<br /> near Tickfaw, Amite, Robert...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate flooding is<br /> forecast. * WHERE...Tangipahoa River near Robert. * WHEN...Until Tuesday morning. * IMPACTS...At 18.0 feet, Evacuation of trailers at Hidden Oaks<br /> Campground must be completed. Water covers the entrance to camp<br />

South Carolina Severe Severe Thunderstorm Warning | Effective 06/18/2026 13:54

At 454 PM EDT, a severe thunderstorm was located over McPhersonville,<br /> moving northeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include...<br /> Ridgeland, Yemassee, Pocotaligo, McPhersonville, Early Branch,<br /> Sheldon, Gardens Corner, Coosawhatchie, Hendersonville and White<br /> Hall. This includes I-95 in South Carolina between mile markers 23 and 51.<br /> Seek shelter inside a well-built structure and stay away from<br />
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