Severe

Significant threat to life or property

Pennsylvania Freeze Watch | Effective 04/18/2026 21:33

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the Freeze Warning, sub-freezing temperatures as low as<br /> 31 expected. For the Freeze Watch, sub-freezing temperatures as<br /> low as 24 possible. * WHERE...Bedford County. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM EDT<br /> Monday. For the Freeze Watch, from late Monday night through<br /> Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br />

Pennsylvania Freeze Watch | Effective 04/18/2026 21:33

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...For the Freeze Warning, sub-freezing temperatures as low as<br /> 30 expected. For the Freeze Watch, sub-freezing temperatures as<br /> low as 23 possible. * WHERE...Blair, Cambria, Somerset, Southern Centre, Southern<br /> Clinton, and Southern Lycoming Counties. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM EDT<br /> Monday. For the Freeze Watch, from late Monday night through<br /> Tuesday morning.

Wisconsin Flood Warning | Effective 04/18/2026 21:33

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning is extended for the following rivers in<br /> Wisconsin... Wisconsin River at Muscoda affecting Richland, Grant and Iowa<br /> Counties. ...The Flood Warning continues for the following rivers in<br /> Wisconsin... Yellow River at Necedah affecting Juneau County. Wisconsin River at Castle Rock Dam affecting Juneau and Adams<br /> Counties. * WHAT...Minor flooding is occurring and moderate flooding is<br /> forecast. * WHERE...Yellow River at Necedah.

Wisconsin Flood Warning | Effective 04/18/2026 21:33

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning is extended for the following rivers in<br /> Wisconsin... Wisconsin River at Muscoda affecting Richland, Grant and Iowa<br /> Counties. ...The Flood Warning continues for the following rivers in<br /> Wisconsin... Yellow River at Necedah affecting Juneau County. Wisconsin River at Castle Rock Dam affecting Juneau and Adams<br /> Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Wisconsin River at Castle Rock Dam.

Wisconsin Flood Warning | Effective 04/18/2026 21:33

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Warning is extended for the following rivers in<br /> Wisconsin... Wisconsin River at Muscoda affecting Richland, Grant and Iowa<br /> Counties. ...The Flood Warning continues for the following rivers in<br /> Wisconsin... Yellow River at Necedah affecting Juneau County. Wisconsin River at Castle Rock Dam affecting Juneau and Adams<br /> Counties. * WHAT...Minor flooding is occurring and moderate flooding is<br /> forecast.

Iowa, Wisconsin Flood Watch | Effective 04/18/2026 21:33

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> ...The Flood Watch continues for the following rivers in Wisconsin...<br /> Iowa... Mississippi River at McGregor affecting Clayton, Crawford,<br /> Allamakee and Grant Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at McGregor. * WHEN...From late Monday night to Wednesday evening. * IMPACTS...At 16.0 feet, The Washington Street Bridge to Saint<br /> Feriole Island begins to flood and is closed. Pumping operations<br /> are underway.

Oklahoma Fire Weather Watch | Effective 04/18/2026 21:43

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> The Fire Weather Watch has been replaced. Please see the latest information from NWS Norman OK on this developing situation. Instruction:<br /> A Red Flag Warning means that critical fire weather conditions<br /> are either occurring now, or will shortly. A combination of<br /> strong winds, low relative humidity, and warm temperatures will<br /> contribute to extreme fire behavior.

Oklahoma Red Flag Warning | Effective 04/18/2026 21:43

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> The National Weather Service in Norman has issued a Red Flag<br /> Warning for portions of northwestern Oklahoma, which is in effect<br /> from noon to 8 PM CDT Sunday. * WINDS...Southwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * TEMPERATURES...Up to 77. * IMPACTS...Any fires that develop will likely spread rapidly.<br /> Outdoor burning is not recommended. * SEVERITY... FUELS (ERC)...70th-89th percentile...4 (out of 5).

Maryland, Virginia, West Virginia Freeze Watch | Effective 04/18/2026 20:59

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Sub-freezing temperatures as low as 26 to 30 degrees<br /> possible. * WHERE...Portions of central, north central, northeast, and<br /> northern Maryland, central, northern, northwest, and western<br /> Virginia, and panhandle West Virginia. * WHEN...From late Monday night through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other<br /> sensitive vegetation and possibly damage unprotected outdoor<br /> plumbing.

Maryland, Virginia Freeze Watch | Effective 04/18/2026 20:59

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Sub-freezing temperatures as low as 29 to 32 degrees<br /> possible, especially northwest of I-95. * WHERE...In Maryland, Central and Southeast Howard, Central and<br /> Southeast Montgomery, Southeast Harford, and Southern Baltimore<br /> Counties. In Virginia, Albemarle, Nelson, Spotsylvania, Central<br /> and Southeast Prince William/Manassas/Manassas Park, Fairfax, and<br /> Stafford Counties. * WHEN...From late Monday night through Tuesday morning.
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