- They have upped their peak rainfall amount to 20". If amounts anywhere near this large occur, major flooding is likely.
- More so than with most storms…the winds with Irene increase sharply with height above the surface. As Irene moves through areas with high-rise structures…these structures will experience significantly stronger winds than indicated by the advisory intensity [which is a forecast of ground-level winds]. Winds at the 30-story level will likely be 20 percent higher than at the surface…and winds 80-100 stories up could be about 30% stronger than at the surface.
The rest of the update below is still valid.
Here is the storm at 5pm Eastern via AccuWeather radar:
and, here is an experimental wind forecast valid at 2am EDT:
Finally, a tornado watch continues until 8pm:
Stay hunkered down if you are in the path of Irene.