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Grand Canyon National Park

Flash Flood Warning issued July 20 at 8:38PM PDT until July 20 at 9:45PM PDT by NWS Las Vegas NV

8:38 PM — 9:45 PM

At 838 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts up to 0.25 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Grand Canyon Ranch and Meadview.

Flood Watch issued July 20 at 7:50PM MST until July 21 at 10:00PM MST by NWS Flagstaff AZ

7:50 PM — July 21st, 10:00 PM

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central, north central, northeast, and west central Arizona, including the following areas, in east central Arizona, Northern Gila County. In north central Arizona, Black Mesa Area, Coconino Plateau, Eastern Mogollon Rim, Grand Canyon Country, Kaibab Plateau, Little Colorado River Valley in Coconino County, Marble and Glen Canyons, Northeast Plateaus and Mesas Hwy 264 Northward, Northeast Plateaus and Mesas South of Hwy 264 and Western Mogollon Rim. In northeast Arizona, Little Colorado River Valley in Apache County, Little Colorado River Valley in Navajo County and White Mountains. In west central Arizona, Yavapai County Mountains. * WHEN...From Tuesday morning through Tuesday evening. * IMPACTS...Flash flooding will be possible in creeks, normally dry washes, swimming holes, and over recently burned areas. Raging killer currents will be possible in side canyons and narrow slot canyons. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Deep monsoon moisture in place across northern Arizona will lead to storms capable of producing rainfall in excess of 2 inches per hour, resulting in an enhanced risk of flash flooding. - Additional information is available at weather.gov/flagstaff.

Flood Advisory issued July 20 at 8:13PM PDT until July 20 at 11:15PM PDT by NWS Las Vegas NV

8:13 PM — 11:15 PM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...West Central Mohave County in northwestern Arizona... * WHEN...Until 1115 PM MST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 813 PM MST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.25 and 0.5 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Pierce Ferry And Antares Roads. - http://www.weather.gov/safety/flood

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