Severe Thunderstorm Warning 70, NWS Salt Lake City, UT

UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
240 PM MDT TUE AUG 21 2001

SYNOPSIS...A MOIST AND UNSTABLE AIR MASS OVER UTAH TONIGHT WILL
PRODUCE WIDESPREAD SHOWERS AND THUNDERSTORMS THIS EVENING.  SOME OF
THE THUNDERSTORMS COULD BE SEVERE.  DRIER AND MORE STABLE AIR WILL
SPREAD ACROSS THE STATE WEDNESDAY AND THURSDAY.

DISCUSSION...FOCUS REMAINS PRIMARILY ON POTENTIAL SEVERE THIS
EVENING.  WATCH BOX JUST ISSUED THROUGH 03Z AND LOOKS GOOD.  AT
LEAST A SMALL CHANCE OF STRONG STORMS MAKING IT INTO THE OGDEN AREA
BUT THE BOX COVERS THE MORE LIKELY AREAS.

BY WEDNESDAY MORNING THE TROF SHOULD BE ABOUT CENTERED OVER UT AND
CONTINUING SLOWLY EAST.  THAT SHOULD SUPRESS ACTIVITY IN THE WEST
BUT MAY STILL ALLOW LIMITED CONVECTIN OVER THE MOUNTAINS AND EASTERN
PORTION OF OUR AREA TOMORROW.  AFTER THAT IT WILL BE TOO DRY AND
STABLE FOR ANY SIGNIFICANT THREAT INTO THE WEEKEND.

IN THE EXTENDED WE WILL INTRODUCE A SLIGHT CHANCE OF THUNDERSTORMS
INTO THE MOUNTAINS ZONES FROM SUNDAY ON WITH SOME MOSTLY HIGH LEVEL
MOISTURE FORECAST TO RETURN TO THE AREA.  TEMPERATURES SHOULD BE
NEAR SEASONAL NORMS THROUGH FRIDAY THEN BEGIN WARMING SAT TO BE
ABOUT 5 ABOVE NORMAL MONDAY-TUESDAY.

SLC 7--0 CDC 3--0 SANDERS

.SLC...SEVERE THUNDERSTORM WATCH UNTIL 03Z.

IDZ024-025-UTZ001>021-WYZ021-211900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
934 AM MDT TUE AUG 21 2001

...STRONG THUNDERSTORMS POSSIBLE TODAY...

STRONG THUNDERSTORMS ARE POSSIBLE OVER UTAH...EXTREME SOUTHEAST
IDAHO AND EXTREME SOUTHWEST WYOMING TODAY. SOME THUNDERSTORMS MAY
HAVE LARGE HAIL AND STRONG GUSTY WINDS ALONG WITH LOCAL HEAVY RAIN
AND FREQUENT LIGHTNING.

A COMBINATION OF AN UPPER LEVEL TROUGH AND ABUNDANT LOW LEVEL
MOISTURE WILL MAKE TODAY ONE OF THE STORMIER DAYS OF THE SUMMER.
PERSONS PLANNING OUTDOOR ACTIVITY SHOULD HAVE A PLAN TO SEEK
SHELTER IF SEVERE WEATHER APPROACHES AND STAY TUNED TO NOAA WEATHER
RADIO OR LOCAL MEDIA FOR FURTHER INFORMATION.