Why is Arizona weather trending today?
Arizona is experiencing a major weather shift as moisture from Tropical Storm Rachel moves into the region. This system is bringing scattered thunderstorms, gusty winds, and a sharp decline in temperatures across the state.
What happened
- 9 Oct
Local weather offices begin scheduling various alerts for the upcoming storm [2].
- 10 Oct
Rain chances increase, with a 60% probability of storms by the evening [1].
- 11 Oct
Tropical Storm Rachel arrives early in the morning, bringing gusty winds and rain [2].
- 13 Oct
Temperatures are expected to dip into the 70s [2].
What you need to know
Wind advisories are in effect Sunday for most of the state, with gusts potentially reaching 55 mph [2].
Flood watches are active for northern Arizona, including Flagstaff, due to risks in dry washes and creeks [1].
Temperatures will drop from the low 90s on Saturday to the 70s by Tuesday and Wednesday [1].
Exact rainfall totals remain highly uncertain, with estimates for the Valley ranging from a quarter inch to 1.5 inches [1, 2].
Background
The current weather event is driven by the remnants of Tropical Storm Rachel and a following upper-level low-pressure trough [1, 2].
The Storm Prediction Center noted a marginal risk for severe storms, which includes gusty winds and a small possibility of an isolated tornado [2].
Questions people ask
When will the rain stop?
The best chance for rain is Saturday through Sunday, with another round of scattered showers possible Monday and Tuesday [2].
Which areas are at risk for flooding?
Flood watches are in effect for northwestern Arizona and parts of the Mogollon Rim [3].
Where this came from
[1] azfamily.com
First Alert Days issued as storms and cooler air move into Arizona
Preview image from azfamily.com
[2] azcentral.com
Tropical Storm Rachel is nearing Arizona. When can you expect rain?
Preview image from azcentral.com
[3] abc15.com
WHAT TO EXPECT: Big changes coming to Arizona as moisture from Tropical Storm Rachel moves in
Preview image from abc15.com
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