Severe Thunderstorm Threat Increasing This Week from the High Plains to Gulf Coast

A storm system will move from the Rockies to the East Coast during the next several days bringing a severe thunderstorm threat to many parts of the nation. On Thursday, large hail will be the main threat in the High Plains. By Friday a more widespread threat will develop in the ArkLaTex region where damaging winds, very large hail and tornadoes will be possible.
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Last Update: 750 PM PDT WED MAR 22 2017

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Portland, OR Local Forecast Office

11NM WSW Newport OR

Marine Zone Forecast


...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT UNTIL 11 PM PDT THIS EVENING...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT...
Synopsis: WEAK HIGHER PRES BUILDING OVER THE COASTAL WATERS THIS EVENING WILL MOVE INLAND LATER TONIGHT AND THU MORNING. THE FRONT FROM THE NEXT LOW PRES SYSTEM WILL MOVE INTO THE WATERS THU AFTERNOON AND OVERNIGHT THU NIGHT. LOWER PRES WILL REMAIN OFF THE COAST THROUGH FRI. HIGHER PRES WILL SLOWLY BUILD OVER THE WATERS FRI NIGHT AND SAT. THE NEXT FRONT IS EXPECTED SUN AFTERNOON AND SUN NIGHT.

Tonight
SW wind 10 to 15 kt...backing to S after midnight. Wind waves SW 3 ft at 4 seconds. SW swell 9 ft at 8 seconds... Subsiding to 7 ft at 9 seconds after midnight.
Thu
S wind 15 to 20 kt...rising to 20 to 25 kt in the afternoon. Gusts to 30 kt. Wind waves S 4 ft at 6 seconds. W swell 6 ft at 13 seconds...building to SW 9 ft at 9 seconds in the afternoon. Rain in the afternoon.
Thu Night
S wind 25 to 30 kt with gusts to 40 kt... Easing to 20 to 25 kt with gusts to 30 kt after midnight. Wind waves S 6 ft at 8 seconds. SW swell 10 ft at 9 seconds. Rain.
Fri
S wind 10 to 15 kt...rising to 15 to 20 kt in the afternoon. Wind waves S 4 ft at 5 seconds. SW swell 9 ft at 9 seconds...subsiding to 6 ft at 9 seconds in the afternoon. Showers.
Fri Night
SW wind 10 to 15 kt with gusts to 20 kt. Wind waves SW 2 ft at 4 seconds. SW swell 5 ft at 9 seconds. Showers.
Sat
SW wind 5 to 10 kt. Wind waves 1 ft. W swell 8 ft. Showers likely.
Sat Night
SW wind 5 to 10 kt. Wind waves 2 ft. W swell 7 ft.
Sun
SE wind 15 to 20 kt. Wind waves 4 ft. W swell 8 ft.
Mon
SW wind 10 to 15 kt. Wind waves 3 ft. W swell 12 ft.
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ABOUT THIS FORECAST

Last Update: 750 PM PDT WED MAR 22 2017
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