Flash Flood Warning 35, NWS Salt Lake City, UT

Issued

Jul 22, 2021, 7:23 PM MDT (01:23 UTC)

Expired

Jul 22, 2021, 8:45 PM MDT

In force

82 min

Issued by

NWS Salt Lake City, UT

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

County Utah County, UT

The Salt Lake City radar (KMTX), 145 km from the middle of the area, began a volume at 01:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

379 
WGUS55 KSLC 230123
FFWSLC
UTC049-230245-
/O.NEW.KSLC.FF.W.0035.210723T0123Z-210723T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
723 PM MDT Thu Jul 22 2021

The National Weather Service in Salt Lake City has issued a

* Flash Flood Warning for...
  Eastern Utah County in northern Utah...

* Until 845 PM MDT.

* At 723 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the Ether Hollow Burn Scar. The approaching 
  storm has a history of rainfall estimates approaching 1 inch in 
  less than thirty minutes, and this heavy rainfall is just now 
  reaching the burn scar. Flash flooding is ongoing or expected to 
  begin shortly.

Excessive rainfall over the Ether Hollow burn scar will result in 
debris flow moving onto the east Mapleton bench areas near Quiet 
Meadows Lane, and near 1600 South and 1900 East in Mapleton. 
Additionally, smaller flows are possible in Hobble Creek near Oak 
Loaf Lane, and Maple Canyon near the Whiting Campground. The debris 
flow can consist of rock, mud, vegetation and other loose materials.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Springville and Mapleton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move away from recently burned areas. Life-threatening flooding of 
creeks, roads and normally dry washes is likely. The heavy rains 
will likely trigger rockslides, mudslides and debris flows in steep 
terrain, especially in and around these areas.

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4016 11158 4015 11152 4013 11152 4013 11157

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

GM

799 
WGUS75 KSLC 230250
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
850 PM MDT Thu Jul 22 2021

UTC049-230300-
/O.EXP.KSLC.FF.W.0035.000000T0000Z-210723T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Utah UT-
850 PM MDT Thu Jul 22 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR EASTERN UTAH COUNTY...

The heavy rain has ended. Local law enforcement confirmed a debris 
flow impacting Quiet Meadows Lane and near 1600 south and 1900 east 
in Mapleton. This flow has remained confined to the roads and within 
existing sandbagging. Please continue to heed remaining road 
closures.

LAT...LON 4016 11158 4015 11152 4013 11152 4013 11157

$$

GM

Flash Flood Warnings in Utah, 2021Every flash flood warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.