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Showers and Thunderstorms With Heavy Rainfall Expected Across the Eastern United States

Showers and thunderstorms, some with local heavy rainfall, are expected across Pennsylvania and northward to New England. These storms will elevate the potential for flash flooding the rest of this weekend. Hot temperatures are expected across the Desert Southwest and Texas. Monsoonal thunderstorms are expected across New Mexico and Arizona. Read More >

Effective 800 AM EDT August 1 and continuing through November 30, 2013, the NWS is seeking user feedback on an experimental

Extended Tropical Weather Outlook (TWO) issued by the National Hurricane Center (NHC).


On an experimental basis the TWO text product produced by the NHC for the Atlantic and East Pacific basins will include

probabilistic information, in 10-percent increments, about a system’s potential for developing into a tropical cyclone in the

next 120 hours. Currently, the TWO only provides genesis potential out to 48 hours. The extended forecast and discussion

will be embedded within the current TWO text product on a disturbance-by-disturbance basis. Each product will include a

prominent statement that the 120-hr genesis forecasts are experimental.


The text TWO can be found on the web at:


The WMO headers and AWIPS Identifiers (AI) for the text TWO are:

Basin WMO AI


Feedback concerning this experimental service is welcomed at: