Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic.
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Last Update: 247 AM PDT Fri Jul 21 2017

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Medford, OR Local Forecast Office

21NM S Port Orford OR

Marine Zone Forecast

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY

Synopsis: Winds and seas will remain relatively calm through tonight as high pressure builds to the west. The thermal trough will strengthen tonight through the weekend, producing gusty north winds and steep seas, likely reaching gale force as early as Saturday afternoon south of Cape Blanco. A period of hazardous seas warning conditions is also likely for portions of the area between Florence and Cape Blanco Sunday morning through Monday morning. The thermal trough will persist into early next week, though it will weaken Tuesday and Wednesday.

Today
N wind 5 to 15 kt. Wind waves 2 ft or less. S swell 2 ft at 12 seconds...shifting to the W 1 to 2 ft at 8 seconds in the morning, then...shifting to the S at 13 seconds in the afternoon. Patchy fog in the morning.
Tonight
N wind 10 to 15 kt. Within 5 nm of brookings southward, NW wind 10 to 15 kt...veering to N 5 kt after midnight. Wind waves 3 ft. Mixed swell SW 2 ft at 12 seconds and W 1 ft at 8 seconds.
Sat
N wind 10 kt...becoming NW 10 to 20 kt in the afternoon. Within 5 nm of brookings southward, NE wind 5 kt early in the morning...becoming variable less than 5 kt, then...becoming NW 10 kt in the afternoon. Wind waves 3 to 5 ft. Mixed swell W 2 to 3 ft at 8 seconds and SW 1 to 2 ft at 12 seconds.
Sat Night
NW wind 20 to 25 kt...easing to 15 to 20 kt after midnight. Within 5 nm of brookings southward, NW wind 10 to 15 kt. Wind waves 5 to 7 ft. Mixed swell NW 2 ft and S 1 ft. Patchy fog after midnight.
Sun
NW wind 15 to 20 kt. Within 5 nm of brookings southward, N wind 10 kt...backing to NW in the afternoon. Wind waves 6 to 9 ft. NW swell 2 ft... Shifting to the SW 1 ft in the afternoon. Patchy fog in the morning.
Sun Night
NW wind 20 to 25 kt...becoming N 15 to 20 kt after midnight. Within 5 nm of brookings southward, NW wind 10 to 15 kt. Wind waves 8 to 11 ft. Swell NW 3 to 4 ft.
Mon
N wind 25 kt...easing to 20 kt after midnight. Wind waves 9 to 10 ft. Swell NW 2 to 3 ft.
Tue
N wind 15 to 20 kt. Wind waves 4 to 5 ft. NW swell 6 ft... Subsiding to 4 ft.
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ABOUT THIS FORECAST

Last Update: 247 AM PDT Fri Jul 21 2017
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