Excessive Heat in Southern California; Tropical Storm Ian Expected to Rapidly Intensify
Excessive heat is possible through Wednesday over southern California. Strong thunderstorms may pose some risk for severe weather across parts of the upper Ohio Valley into the northern Mid Atlantic coast. Tropical Storm Ian is forecast to approach the Florida peninsula at major hurricane strength by midweek, and poses a risk of dangerous storm surge, hurricane-force winds, and heavy rainfall.
Hazardous Weather Conditions
High and low forecast temperature values represent air temperature.
Water temperature forecast is experimental.
Last Update: 10:37 pm EDT Sep 24, 2022
Forecast Valid: 2am EDT Sep 25, 2022-6pm EDT Oct 1, 2022
Winds and waves higher in and near thunderstorms.
The water temperature off Rochester is 69 degrees, and the central
Lake Ontario buoy water temperature is 67 degrees.
- 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.
- 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.