990
FNUS75 KSLC 091735
FWSSLC

Spot Forecast for Sand Bench SAR...Zion Dispatch
National Weather Service Salt Lake City UT
1135 AM MDT Thu Oct 9 2025

Forecast is based on forecast start time of 1200 MDT on October 09.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Tropical moisture will be quickly on the rise through the
afternoon and into this evening. Now through 2PM expect generally
dry conditions with weak showers starting to develop to the south
and west of Zion Canyon. The hourly chance of rain will rise to
around 10% through 2PM. However between 2PM and 4PM moisture will
be quickly on the rise, and the hourly chance of rain will spike
from around 10% at 2PM to near 50% by 4PM. The chance for flash
flooding (hourly rain fall rates exceeding about 0.3 inches) in
Zion Canyon will maximize from around 3 PM to 6 PM at around a
20-40% chance each hour, with overall probability of exceeding 0.3
inches through 6 PM at 60%. Heavy rainfall would be associated
with showers and thunderstorms moving up from the south-southwest
of Arizona, and thus any threatening weather moving in from that
direction should be watched closely on site. Beyond the time range
of this spot, it is important to note there is a secondary,
higher maxima in flash flood risk overnight tonight into early
Friday morning.

.REST OF TODAY...

Sky/weather.........Chance of showers and thunderstorms early in
the afternoon (20%) increasing in likelihood
between 3 PM and 6 PM to 70%.
Mostly cloudy (65-75 percent cloud cover).
Chance of pcpn......70 percent.
Flash Flood Rating..Probable (risk level 3 of 4).
Chance of lightning.34 percent.
Max temperature.....77-79.
Min humidity........41-43 percent.
Surface winds (mph).Southeast winds 6-10 mph.

$$
Forecaster...Church
Requested by...Deines
Type of request...SAR
.TAG 2523243.0/SLC
.DELDT 10/09/25
.FormatterVersion 2.0.0
.EMAIL zion_dispatch@nps.gov