Moderate

* WHAT...Sub-freezing temperatures ranging from the mid 20s to low 30s. * WHERE...A portion of central Pennsylvania. * WHEN...From midnight tonight to 9 AM EDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Another widespread frost and freeze event is expected Saturday night as temperatures will again fall into the upper 20s and low 30s.

* WHAT...South winds 25 to 35 mph with gusts up to 65 mph. * WHERE...Windy Pass. * WHEN...Until 4 PM AKDT Saturday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

* WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Portions of central, north central, panhandle, southwest, and west central Nebraska. * WHEN...From 1 AM CDT /midnight MDT/ to 8 AM CDT /7 AM MDT/ Saturday. * IMPACTS...Frost and freeze conditions could kill sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly.

* WHAT...Snow expected. Total snow accumulations OF 2 TO 5 inches. Winds gusting up to 50 mph. * WHERE...Portage and Turnagain Pass. * WHEN...Until 11 PM AKDT this evening. * IMPACTS...Sudden changes from rain to snow will be possible through the rest of today. Drops in visibilities reduced to one half mile is possible due to heavy snowfall and strong winds. The strongest wind gusts will be near Portage. Travel could be very difficult with slick roads and rapid changes to conditions.

At 333 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from Pleak to near South Texas Nuclear Plant. Movement was east at 40 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Strong thunderstorms will be near... Southeastern Rosenberg, eastern Bay City, Fairchilds, Thompsons, Van Vleck, and Greatwood around 340 PM CDT. West Columbia, Sweeny, Brazos Bend State Park, and Riverstone

* WHAT...Temperatures up to 90 degrees F expected. Significant cooling expected overnight. * WHERE...Greater Vancouver Metro, Lower Columbia River and Cowlitz River Valleys, Inner Portland Metro, and East Portland Metro. * WHEN...From 8 AM to 11 PM PDT Sunday. Significant cooling expected overnight. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...There is around 5% chance of high temperatures of 95 degrees or greater in urban areas around the

* WHAT...Temperatures up to 90 degrees F expected. Significant cooling expected overnight. * WHERE...Tualatin Valley. * WHEN...From 8 AM to 11 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...There is around 5% chance of high temperatures of 95 degrees or greater in urban areas around the Portland-Metro area. Overall Moderate HeatRisk with relieving cooling temperatures overnight. Highs will be near record breaking temperatures for this time of year.

* WHAT...An incoming long-period northwesterly swell will increase the risk of sneaker waves and strong rip currents. * WHERE...Beaches along the Pacific Coast. * WHEN...From Saturday morning through Sunday evening. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches. Stay off of jetties, piers, rocks, and other waterside

* WHAT...Moderate risk of sneaker waves expected. * WHERE...Beaches of Curry, Coos, and Douglas counties. * WHEN...From 11 PM PDT Saturday evening through 11 AM PDT Sunday morning. * IMPACTS...Sneaker waves can run up significantly farther on beaches than normal, including over rocks and jetties. These waves can suddenly knock people off of their feet and sweep them into the ocean. The waves can also move logs or other objects which could crush or trap anyone caught underneath.

* WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Portions of northwest and west central Iowa, southwest Minnesota, northeast Nebraska, and central, east central, south central, and southeast South Dakota. * WHEN...From 1 AM to 8 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.