National Weather Service United States Department of Commerce

Heavy Rain Return to the Southwest U.S.; Potential Atlantic Tropical System Interaction

Heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding to the Desert Southwest into Sunday. The tropical wave (AL94) continues to bring heavy rainfall to Puerto Rico and the US Virgin Islands. The close proximity of Tropical Storm Humberto and AL94 could lead to interaction between them, but details of their track and intensity forecasts remain uncertain Read More >

Graphical HWO - Activation Necessity

This graphic specifies whether activation of storm spotters and emergency management personnel will be necessary during the period. It is designed to match the last statement in the standard text hazardous weather outlook product.

Activation Necessity
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Activation of storm spotters and EMA's is...
...not anticipated.
...possible.
...likely.
...requested or ongoing.