Flash Flood Warning 6, NWS Salt Lake City, UT

151 
WGUS75 KSLC 110227
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
827 PM MDT FRI MAY 10 2019

UTC025-110530-
/O.CON.KSLC.FF.W.0006.000000T0000Z-190511T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
827 PM MDT FRI MAY 10 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM MDT FOR
CENTRAL KANE COUNTY...

At 819 PM MDT, Doppler radar indicated widespread light to moderate 
rainfall across the warned area. This is likely resulting in flash 
flooding.

The earlier thunderstorms have moved out of the area, with 
widespread light to moderate rainfall remaining across the warned 
area at mid-evening. Earlier heavy rain combined with the current 
widespread rain across most of the drainages will maintain the 
potential for flash flooding throughout the evening.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid stream or 
creek beds, along with narrow, steep canyons.

&&

LAT...LON 3743 11147 3709 11135 3703 11161 3725 11186

$$

mconger

991 
WGUS75 KSLC 110534
FFSSLC

Flash Flood Statement
National Weather Service Salt Lake City UT
1134 PM MDT FRI MAY 10 2019

UTC025-110544-
/O.EXP.KSLC.FF.W.0006.000000T0000Z-190511T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
1134 PM MDT FRI MAY 10 2019

...THE FLASH FLOOD WARNING FOR CENTRAL KANE COUNTY HAS EXPIRED...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 3743 11147 3709 11135 3703 11161 3725 11186

$$

Area Forecast Discussion
National Weather Service Salt Lake City UT
332 PM MDT Fri May 10 2019

.SYNOPSIS...An upper low will bring unsettled conditions to
the southern half of the area today, while high pressure builds
across the north. This high will eventually become the dominant
weather feature by late in the weekend into the first half of next
week.

&&

.SHORT TERM (Through 00Z Tuesday)...Afternoon convection has
developed across northern Arizona and is starting to progress
toward the Utah/Arizona border. With little in the way of steering
flow or instability, these storms are slowly moving to the
northeast and will likely impact mainly eastern Washington and
Kane Counties this afternoon and evening. Biggest threat will be
for periods of heavy rainfall given somewhat high moisture.

The upper level low responsible for the unsettled conditions over
the last few days will continue to move southwest of the area.
Global models have trended further south with the path of the low
as it gradually shifts eastward across northern Mexico this
weekend. This has decreased the threat of convection across
southern Utah this weekend markedly...and lowered PoPs again as a
result.

High pressure will gradually build into the area...with a warming,
drying tend expected for the remainder of the short term forecast
period.

.LONG TERM (After 00Z Tuesday)...Dry, largely stable, and mild
through midweek of next week. Although the ridge in place will
gradually shift east and downstream by Thursday, a notable warming
trend will remain with temps some 10F above climo. Come Thursday
backing flow in advance of an encroaching longwave trough will
retain these warm temps, and a slightly better chance of high based
diurnal convection primarily over the terrain.

Focus thereafter shifts upstream to the evolution of the next long
wave trough (and embedded short waves) that will be impinging on the
area late in the week. Model consensus depicts an initial short wave
will eject and become negatively tilted overhead Friday, yielding
higher than normal precip potential and cooler temps (near normal)
across much of the area. Continued to raise PoPs this forecast as
moisture/lift looks more than sufficient for widespread precip.

Looking past day 7 a strong nearly zonal jet appears poised to punch
into the interior west retaining cool/unsettled conditions into the
following week. Latitude of this will be critical locally regarding
the extent of another cool down and precip potential/significance.

&&

.AVIATION...Operational weather concerns are expected to remain
minimal at the KSLC terminal through the valid TAF period. Northerly
winds should switch to southeast a bit later than usual, between 03-
05z. VFR conditions under mostly clear skies will be maintained.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

Kruse/Merrill/Verzella

For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecity

For frequently asked questions about the Area Forecast Discussion
visit...
http://weather.gov/saltlakecity/general/afd_faqs.php

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
340 PM MDT Fri May 10 2019

UTZ001>016-019>021-517-518-WYZ021-111300-
Cache Valley/Utah Portion-Northern Wasatch Front-
Salt Lake and Tooele Valleys-Southern Wasatch Front-
Great Salt Lake Desert and Mountains-Wasatch Mountain Valleys-
Wasatch Mountains I-80 North-Wasatch Mountains South of I-80-
Western Uinta Mountains-Wasatch Plateau/Book Cliffs-
Western Uinta Basin-Castle Country-San Rafael Swell-
Sanpete/Sevier Valleys-West Central Utah-Southwest Utah-
Utahs Dixie and Zion National Park-South Central Utah-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-Southwest Wyoming-
340 PM MDT Fri May 10 2019

This Hazardous Weather Outlook is for the western two thirds of
Utah and southwest Wyoming.

.DAY ONE...This Afternoon and Tonight

Showers and thunderstorms will continue this afternoon and evening
across southern Utah. Heavy rain, gusty winds, small hail, and
lightning are possible with any storms that develop.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The warming temperatures across the area this weekend will
increase snowmelt at the mid and high elevations, resulting in
streams and rivers running high, fast and cold. These conditions
can be expected to continue across the outlook area through the
remainder of the Spring. Monitor children and pets closely near
these waterways.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

For more information from NOAA/s National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential road travel impacts visit...
http://www.udottraffic.utah.gov/roadweatherforecast.aspx