Continuous Heavy Rainfall And Threat For Flooding Over The Western Gulf Coast And Midwest; Excessive Heat Widespread Across The Desert Southwest

A very slow moving disturbance will deliver continuous tropical heavy rainfall and flooding along the Texas Gulf Coast into Louisiana. Additional heavy rainfall will be possible across the Midwest and Ohio Valley, from a circulation and stalled frontal zone. Very hot temperatures exceeding 110 degrees are likely over southern California, Nevada and Arizona, which includes Las Vegas and Phoenix.
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Hazardous Weather Conditions

12NM ESE Annapolis MD

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Isolated Thunderstorms

    Light Wind
    < 1ft
  • Tonight

    Heavy Rain

    S 7kt
    1ft
  • Thursday

    Slight Chc Showers

    NNW 10kt
    1ft
  • Thursday
    Night

    Partly Cloudy

    Winds IncreasingE 6kt
    < 1ft
  • Friday

    Chance Showers

    E 11kt
    1ft
  • Friday
    Night

    Showers Likely

    E 12kt
    1ft
  • Saturday

    Thunderstorms Likely

    S 14kt
    1ft
  • Saturday
    Night

    Thunderstorms Likely

    SW 12ktWinds Decreasing
    1ft
  • Sunday

    Chance Thunderstorms

    W 10kt
    < 1ft

Associated Zone Forecast which includes this point

Last Update: 10:27 am EDT Jun 20, 2018
Forecast Valid: 12pm EDT Jun 20, 2018-6pm EDT Jun 26, 2018

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Detailed Forecast


Synopsis: Low pressure will track from West Virginia east over the waters along a stalled front through tonight. The front will then drop farther south Thursday as high pressure briefly builds from the Ohio Valley to New England. The front will then return north as a warm front Friday night into Saturday as the high moves offshore and low pressure moves from the Midwest to the Great Lakes. A Small Craft Advisory may be needed for a portion of the waters Friday into Saturday.

This Afternoon
Variable winds 5 kt or less. Isolated showers and thunderstorms after 1pm. Seas 1 ft or less.
Tonight
S wind around 7 kt becoming SW after midnight. Showers and thunderstorms likely before midnight, then a chance of showers. Some of the storms could produce gusty winds and heavy rain. Seas around 1 ft.
Thursday
NW wind 8 to 10 kt becoming N in the morning. A slight chance of showers before 7am. Seas around 1 ft.
Thursday Night
Variable winds less than 5 kt becoming E around 6 kt. Partly cloudy. Seas 1 ft or less.
Friday
E wind 8 to 11 kt. A chance of showers, mainly after 1pm. Seas around 1 ft.
Friday Night
E wind 10 to 12 kt. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then showers likely after 1am. Seas around 1 ft.
Saturday
SE wind 9 to 14 kt becoming SSW in the afternoon. Winds could gust as high as 20 kt. Showers likely before 9am, then showers likely and possibly a thunderstorm between 9am and 3pm, then showers and thunderstorms likely after 3pm. Seas around 1 ft.
Saturday Night
SW wind 9 to 12 kt becoming W 6 to 9 kt after midnight. Showers and thunderstorms likely. Seas around 1 ft.
Sunday
W wind 6 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Winds and waves higher and visibilities lower in and near tstms.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 38.88°N 76.28°W
Last Update: 10:27 am EDT Jun 20, 2018
Forecast Valid: 12pm EDT Jun 20, 2018-6pm EDT Jun 26, 2018
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