Severe Thunderstorm Warning 16, NWS Salt Lake City, UT

279 
WWUS55 KSLC 112115
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
315 PM MDT SAT AUG 11 2018

UTC017-021-112130-
/O.CON.KSLC.SV.W.0016.000000T0000Z-180811T2130Z/
Garfield UT-Iron UT-
315 PM MDT SAT AUG 11 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MDT
FOR WEST CENTRAL GARFIELD AND EAST CENTRAL IRON COUNTIES...

At 314 PM MDT, a severe thunderstorm was located over Panguitch, or 
29 miles southwest of Junction, moving northwest at 20 mph near the 
junction of US-89 and SR143.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Panguitch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3778 11230 3768 11244 3790 11269 3804 11239
TIME...MOT...LOC 2114Z 149DEG 16KT 3785 11245 

HAIL...1.00IN
WIND...60MPH
 
$$

NC

500 
WWUS55 KSLC 112128
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
328 PM MDT SAT AUG 11 2018

UTC017-021-112137-
/O.EXP.KSLC.SV.W.0016.000000T0000Z-180811T2130Z/
Garfield UT-Iron UT-
328 PM MDT SAT AUG 11 2018

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL GARFIELD AND EAST
CENTRAL IRON COUNTIES WILL EXPIRE AT 330 PM MDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3778 11230 3768 11244 3790 11269 3804 11239
TIME...MOT...LOC 2127Z 149DEG 16KT 3790 11249 

$$

NC

Area Forecast Discussion
National Weather Service Salt Lake City UT
811 AM MDT Sat Aug 11 2018

.SYNOPSIS...High pressure aloft over the Great Basin will
gradually weaken over the next several days. Moisture pooled
across the desert southwest and southern Utah will gradually
work north and then remain across Utah through the first half
of next week.

&&

.DISCUSSION...An elongated mid level ridge axis extends from
central Nevada northeastward through Utah and into central
Wyoming. This is maintaining a hot and generally dry airmass
across the forecast area. Smoke from local and regional wildfires
continues to reduce both visibility and air quality, particularly
along the Wasatch Front. With the ridge in place across the
region, deeper moisture remains suppressed across Arizona,
although PW values have trended a bit upward across southern Utah
over the past 24 hours. As such anticipate a little better
convective coverage across the higher terrain of southern Utah
this afternoon, and perhaps a few cells extending northward into
central Utah. Will update to adjust weather wording for
smoke/haze otherwise going forecast looks in good shape.

&&

.AVIATION...Southerly winds at KSLC are expected to switch to the
northwest between 19-20Z. Smoke from area wildfires will reduce
visibility into the MVFR range at times throughout the day.

&&

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

Seaman

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
600 AM MDT Sat Aug 11 2018

UTZ001>016-019>021-517-518-WYZ021-121200-
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-
600 AM MDT Sat Aug 11 2018

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

.DAY ONE...Today and Tonight

Active wildfires over central Utah have produced an extensive
area of smoke for northern, central and eastern Utah. Reduced
visibilities in these areas are expected again today.

Isolated thunderstorms will develop once again across the higher
terrain of southern Utah this afternoon. A few of these showers
and stroms will work into central then northeast Utah later today.
Gusty winds will be the main impact from this showers and
thunderstorms.

Hot temperatures are expected again today. Triple digit readings
are expected across portions of western and southern Utah this
afternoon.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Moisture will spread north across the remainder of the outlook
area Sunday will remain over the area throughout the upcoming
week. Scattered showers and thunderstorms will exist each day,
with locally heavy rains possible. Flash flooding could develop
out of these heavy rain events, with normally prone areas to
flooding such as slot canyons, steep terrain or burn scars
susceptible to flooding during the work week.

.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

Special Weather Statement
National Weather Service Salt Lake City UT
236 PM MDT SAT AUG 11 2018

UTZ518-112100-
Southern Utah Mountains UT-
236 PM MDT SAT AUG 11 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN GARFIELD...
NORTHWESTERN KANE AND EASTERN IRON COUNTIES UNTIL 300 PM MDT...

At 234 PM MDT, National Weather Service Doppler radar indicated a
strong thunderstorm over Hatch, or 35 miles east of Cedar City...
moving southwest at 20 mph. This storm is predicted to move over
US-89 south of Panguitch

Penny to nickel size hail and winds in excess of 40 mph will be
possible.

Locations impacted include...
Panguitch, Hatch and Hillsdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If threatening weather approaches, take shelter in a sturdy building.

&&

LAT...LON 3789 11240 3765 11217 3751 11255 3777 11274
TIME...MOT...LOC 2034Z 061DEG 18KT 3766 11243

NC