National Weather Service United States Department of Commerce

The flash flooding threat will begin moving east out of the Plains into the Upper Midwest and Great Lakes on Thursday

Flash flooding will continue to be possible on Thursday but will begin moving out of the central and northern Plains. The area of concern will be the Upper Midwest edging into the the eastern Great Lakes region. 1 to 2 inches of rainfall will be possible into Friday.
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Last Update: 202 AM PDT THU AUG 28 2014

View Nearby Observations

Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm

Marine Zone Forecast





  • SynopsisAT 1 AM... A 1017 MB HIGH WAS 200 NM WEST OF SAN DIEGO AND A 1010 MB LOW WAS NEAR PHOENIX. A LARGE SOUTHERLY SWELL WILL SLOWLY FADE TODAY. WEAK TO MODERATE ONSHORE FLOW WILL CONTINUE THROUGH THE WEEKEND.
  • Today Wind variable less than 10 kt...becoming NW 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less... Becoming 3 ft in the afternoon. Mixed swell W 1 to 2 ft at 9 seconds and S 5 to 6 ft at 12 seconds.
  • Tonight Wind NW 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. Mixed swell W 1 ft at 5 seconds and S 4 to 5 ft at 11 seconds.
  • Fri Wind NW 10 kt...becoming W in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 6 seconds and S 3 ft at 10 seconds.
  • Fri Night Wind W 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 6 seconds and S 2 to 3 ft at 9 seconds.
  • Sat Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 9 seconds.
  • Sat Night Wind variable less than 10 kt...becoming S 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and SW 2 ft.
  • Sun Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 3 ft and SW 2 to 3 ft.
  • Sun Night Wind SW 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and SW 2 to 3 ft.
  • Labor Day Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and SW 2 to 3 ft.
  • Mon Night Wind SW 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and SW 2 to 3 ft.



Additional Forecasts and Information

Zone Area Forecast for Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm
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