Severe Thunderstorm Warning 15, NWS Salt Lake City, UT

644 
WWUS55 KSLC 280112
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
710 PM MDT WED MAY 27 2015

UTC003-280130-
/O.CON.KSLC.SV.W.0015.000000T0000Z-150528T0130Z/
BOX ELDER UT-
710 PM MDT WED MAY 27 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT
FOR SOUTH CENTRAL BOX ELDER COUNTY...

AT 710 PM MDT...DOPPLER RADAR CONTINUES TO INDICATE A SEVERE 
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING 
WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER THE GREAT 
SALT LAKE 28 MILES WEST OF HOOPER...OR 35 MILES WEST OF 
OGDEN...MOVING SOUTHEAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
GUNNISON ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH 
AND/OR LARGE HAIL. 

&&

LAT...LON 4132 11291 4144 11278 4129 11237 4104 11267
TIME...MOT...LOC 0110Z 311DEG 17KT 4124 11266 

$$

LC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
407 PM MDT WED MAY 27 2015

.SYNOPSIS...AN UPPER LOW MOVING OUT OF THE PACIFIC NORTHWEST WILL
IMPACT MUCH OF UTAH THROUGH THURSDAY. HIGH PRESSURE WILL
STRENGTHEN ACROSS THE REGION LATE IN THE WEEK THROUGH THE UPCOMING
WEEKEND RESULTING IN A WARMING AND DRYING TREND.

&&

.SHORT TERM (THROUGH 06Z SUNDAY)...AN UPPER LOW PRESSURE SYSTEM IS
SPINNING OVER IDAHO THIS AFTERNOON...WITH THE SOUTHERN PORTIONS OF
THE TROUGH IMPACTING UTAH AND SOUTHWEST WYOMING. THIS TROUGH HAS
HELPED INITIATE THUNDERSTORMS ACROSS THE NORTHERN TWO THIRDS OF
THE FORECAST AREA...WITH SOME OF THESE STORMS BECOMING
SEVERE. LARGE HAIL HAS BEEN REPORTED...AS WELL AS A COUPLE FUNNEL
CLOUD REPORTS NEAR THE UINTA BASIN. EFFECTIVE BULK SHEAR IS NOT
ALL THAT IMPRESSIVE...GENERALLY 20-25 KNOTS...BUT SOME OF THE
STRONGER CELLS HAVE BEEN IN AREAS WITH SMALL ANALYZED POCKETS OF
30-40 KNOTS OF SHEAR.

GOOD INSTABILITY WILL LIKELY PERSIST INTO THE EVENING
HOURS...WITH SOME STRONGER CELLS LIKELY TO MOVE INTO TOOELE AND
BOX ELDER COUNTIES FROM NEVADA. LOWERED POPS A BIT BETWEEN 06Z AND
12Z THURSDAY...AS MOST MODELS HAVE SHOWERS CALMING DOWN DURING THE
OVERNIGHT HOURS...BUT SHOWERS WILL LIKELY INCREASE AGAIN THURSDAY
MORNING ACROSS NORTHERN UTAH AS THE LOW DROPS INTO THE AREA.
SEVERE STORMS COULD BE POSSIBLE AGAIN THURSDAY AFTERNOON AS THE
TROUGH AXIS PASSES THROUGH THE CWA...THOUGH SHOWERS MAY END
EARLIER THAN USUAL WITH THE TROUGH MOVING TO THE EAST SHORTLY
AFTER 00Z FRIDAY.

THE TROUGH FINALLY EXITS THE REGION THROUGH THE DAY FRIDAY...WITH
A SHORTWAVE RIDGE BUILDING OVER THE GREAT BASIN. THIS WILL BEGIN A
WARMING AND DRYING TREND HEADING INTO THE WEEKEND...WITH
TEMPERATURES RISING ABOVE SEASONAL NORMALS BY SATURDAY AFTERNOON.

.LONG TERM (AFTER 06Z SUNDAY)...

SIGNIFICANT WARMING AND DRYING TREND CONTINUES DURING THE SECOND
HALF OF THE WEEKEND INTO EARLY NEXT WEEK WITH THE RIDGE CENTERING
OVERHEAD SUNDAY. STORM COVERAGE WILL CONTINUE TO THIN OUT AND BECOME
RELEGATED TO THE MOUNTAINS.

SOUTHERLY WINDS BECOME GUSTY LATE SUNDAY AFTERNOON THROUGH EARLY
NEXT WEEK AS THE RIDGE SHIFTS EAST OF THE ROCKIES. BY MIDWEEK THE
NEXT CLOSED LOW TRAVERSES THE NORTHERN ROCKIES...INCREASING
SHOWER/THUNDERSTORM COVERAGE ACROSS THE NORTH. EXPECTING
TEMPERATURES TO COOL TO OR JUST BELOW NORMAL WITH THE PASSAGE OF A
COOL FRONT BY MIDWEEK.

&&

.AVIATION...NORTHERLY WINDS ARE EXPECTED TO PREVAIL AT THE
SLC TERMINAL THROUGH ABOUT 03Z THEN SHIFT TO SOUTHEASTERLY. SHOWERS
WILL BE INCREASING IN COVERAGE IN THE AREA THROUGH THE REST OF THIS
AFTERNOON AND INTO THIS EVENING. VFR CONDITIONS WILL PREVAIL BUT
CIGS COULD DIP TO OR BELOW 6000 FT WITH PASSING SHOWERS AND GUSTY
ERRATIC WINDS ARE ALSO POSSIBLE. SHOWERS COULD BECOME MORE FREQUENT
AFTER ABOUT 05-06Z WITH PREVAILING CIGS AOB 6000 FT AND BRIEF MVFR
POSSIBLE IN HEAVIER RAIN.

&&

.FIRE WEATHER...THE REST OF TODAY AND TOMORROW WILL BE WARM AND
FAIRLY DRY ACROSS THE SOUTH...WHILE THE NORTH REMAINS COOL AND
MOIST. THE BEST CHANCE FOR A WETTING RAIN IS ALSO ACROSS THE NORTH.
SHOWERS AND STORMS INCREASE IN COVERAGE THROUGH THE REMAINDER OF
THIS AFTERNOON. IT SHOULD REMAIN ACTIVE ACROSS THE NORTH THIS
EVENING...THEN AGAIN TOMORROW AS WELL. THE STRONGEST ACTIVITY WILL
BRING A CHANCE FOR CLOUD TO GROUND LIGHTNING...GUSTY/ERRATIC
WINDS...AND SMALL HAIL.

THE PATTERN SHIFTS FRIDAY THROUGH THE WEEKEND AS A RIDGE BUILDS IN.
EXPECT VERY WARM CONDITIONS AND A DRYING TREND ACROSS ALL OF UTAH.
THE CHANCE FOR AFTERNOON SHOWERS AND THUNDERSTORMS WILL THIN EACH
DAY AND BE RELEGATED TO THE MOUNTAINS FOR THE MOST PART. SOUTHERLY
WINDS WILL BECOME GUSTY SUNDAY...INCREASING THROUGH
TUESDAY...INCREASING THE LIKELIHOOD OF SEEING CRITICAL METEOROLOGICAL
FIRE WEATHER CONDITIONS INTO EARLY NEXT WEEK.

&&

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

PUBLIC...SCHOENING
AVIATION...WILENSKY
FIRE WEATHER...ROGOWSKI

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

FOR FREQUENTLY ASKED QUESTIONS ABOUT THE AREA FORECAST DISCUSSION
VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/GENERAL/AFD_FAQS.PHP (ALL LOWER CASE)

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
418 PM MDT WED MAY 27 2015

UTZ001>016-019>021-517-518-WYZ021-281030-
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-
418 PM MDT WED MAY 27 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TONIGHT

SCATTERED THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHERN AND
CENTRAL UTAH THIS EVENING...WITH LARGE HAIL...HEAVY RAIN...AND
GUSTY WINDS POSSIBLE WITH THE STRONGEST STORMS. THESE SHOWERS WILL
DECREASE IN COVERAGE AFTER MIDNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS WILL INCREASE IN COVERAGE AGAIN ON THURSDAY...WITH
LARGE HAIL...HEAVY RAIN...AND GUSTY WINDS POSSIBLE WITH THE
STRONGEST STORMS. THESE STORMS WILL DISSIPATE THURSDAY
EVENING.

HIGH PRESSURE WILL BUILD OVER THE REGION FRIDAY THROUGH
MONDAY...WITH SIGNIFICANTLY WARMER AND DRIER WEATHER.

.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/ (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
315 PM MDT WED MAY 27 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 PM     HAIL             14 S MYTON              39.99N 110.06W
05/27/2015  M1.25 INCH       DUCHESNE           UT   BROADCAST MEDIA

            HALF DOLLAR SIZED HAIL WAS OBSERVED AND PHOTOGRAPHED IN
            THE PARIETTE WETLANDS SOUTH OF MYTON.

&&

ES

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
408 PM MDT WED MAY 27 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     HAIL             SANDY                   40.57N 111.85W
05/27/2015  M0.88 INCH       SALT LAKE          UT   BROADCAST MEDIA

&&

MS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
600 PM MDT WED MAY 27 2015

UTZ005-280045-
GREAT SALT LAKE DESERT AND MOUNTAINS UT-
600 PM MDT WED MAY 27 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL BOX ELDER AND
NORTHWESTERN TOOELE COUNTIES UNTIL 645 PM MDT...

AT 600 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WINDS 14 MILES NORTHWEST OF
KNOLLS...OR 32 MILES EAST OF WENDOVER...MOVING SOUTHEAST AT 35 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
KNOLLS AND CLIVE AND INTERSTATE 80 ACROSS WESTERN UTAH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF THREATENING WEATHER APPROACHES...TAKE SHELTER IN A STURDY
BUILDING.

STRONG WINDS WITH THESE STORMS MAY OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4071 11369 4109 11343 4093 11290 4061 11305
TIME...MOT...LOC 0000Z 296DEG 32KT 4090 11343

LC