THIS ALERT WILL BE UPDATED
UPDATE: 10:30 a.m. – Flash Flood Warning to include, but not limited to: New Harmony, Leeds, and Snow Canyon State Park.
SOUTHERN UTAH – The National Weather Service has issued a “Flash Flood Warning” for east central Washington County and Zion National Park in effect until 8:45 a.m. today.
A thunderstorm producing heavy rainfall is moving from the southeast quadrant of Zion National Park in a northwesterly direction. This storm has produced up to .35 inches of precipitation between 5:30 a.m. and 5:45 a.m.
Additionally watersheds within Zion National Park are saturated from earlier rains and are expected to produce higher amounts of runoff as a result.
Precautionary and preparedness actions
The National Oceanic and Atmospheric Association and the National Weather Service offer safety rules for flash flooding:
- Conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation.
- Flash flood waves, moving at incredible speeds, can roll boulders, tear out trees, destroy buildings and bridges, and scour out new channels. Killing walls of water can reach heights of 10 to 20 feet. You will not always have warning that these deadly, sudden floods are coming. When a flash flood warning is issued for your area or the moment you first realize that a flash flood is imminent, act quickly to save yourself. You may have only seconds.
- Most flood deaths occur in automobiles. Do not drive your vehicle into areas where the water covers the roadway. Flood waters are usually deeper than they appear. The road bed may not be intact under the water. Just one foot of flowing water is powerful enough to sweep vehicles off the road. If the vehicle stalls, abandon it immediately and seek higher ground. Rapidly rising water may engulf the vehicle and its occupants and sweep them away. Case in point: In July 2013 a tour bus in Arizona tipped over and got swept nearly one-half mile down an otherwise dry wash.
- Do not hike rivers and especially slot canyons while flash flood warnings are in place. Case in point: Canyoneers in Zion “I can’t believe I survived”
- Do not hike alone and always tell someone where you and your buddy and others are going.
- Get out of areas subject to flooding. This includes dips, low spots, canyons, washes, et cetera.
- Avoid already flooded and high velocity flow areas. Do not try to cross a flowing stream on foot where water is above your knees.
- Be especially cautious at night when it is harder to recognize flood dangers.
- Do not camp or park your vehicle along streams and washes, particularly during threatening conditions.
- During any flood emergency, stay tuned to your NOAA weather radio, commercial radio, or television, follow St. George News at STGnews.com and St. George News Facebook for weather alerts and updates relevant to Southern Utah. Information from the national weather service and disaster and emergency services may save your life.
Turn around, don’t drown.
Related posts – Storm, flash flooding
- Evening storms in Washington County, as captured by the community; STGnews Photo Gallery
- I can’t believe I survived; video of flash flood crashing down on canyoneers – Zion National Park
- Flood victims blame city for neglect
- Charges filed in tour bus accident
- Tour bus gets swept down wash after heavy rains
- UPDATED: Summer storm floods Coral Canyon homes; STGnews Videocast
- Flash flooding meets River Road near Southern Parkway; Videocast, STGnews photo gallery
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