textproduct: Salt Lake City

SYNOPSIS

Strong to severe thunderstorms are possible Wednesday afternoon, associated with a disturbance crossing northern Utah. Hot, dry and breezy conditions will then settle into the state later Wednesday through the next weekend.

LONG TERM (After 12Z Friday)

A calm, dry, and hot period appears increasingly likely as we head into the weekend and into early next week. Strong ridging will build over the four corners providing strong subsidence leading to minimal rain chances for the extended forecast period. Anomalously hot temperatures also appear increasingly likely across UT and southwest WY with temperatures around 10 degrees above normal to kick off the forecast, gradually increasing to 15 degrees above normal bt this weekend into early next week for the entire forecast area. With hot and dry conditions expected, fire weather concerns increase areawide (see fire section for more details).

The concern for fire weather continues as enhanced dry southwesterlies aloft appear increasingly likely. With favorable boundary layer mixing, these winds will make it down to the surface with ease resulting in gusty afternoons across the forecast area into early next week. To sum it all up, dry, hot, and windy conditions are expected through the duration of the extended forecast. Be sure to dress appropriately if recreating outside, drink plenty of water, and limit time in the sun!

AVIATION... REST OF UTAH AND SOUTHWEST WYOMING

Gusty conditions will occur across all sites this afternoon beginning as early as 18z with gusts subsiding around 03z across all sites. There is a chance for gusty outflow from showers this afternoon at KLGU, KEVW, and KOGD from 20-00z with gusts up to 40kts possible. There is a small chance for thunder with these storms, though probabilities appear too low at this time to include a -TSRA group. This may be adjusted in future TAF packages.

FIRE WEATHER

A relatively strong disturbance will bring the threat of strong thunderstorms to northern and eastern Utah this afternoon and evening. Gusty microburst winds will be the main threat, with the highest chance of hail near the Utah/Idaho border. Meanwhile, deep southwesterly flow will begin to impact southern Utah this afternoon and evening with breezy, dry conditions. These hot, dry and breezy conditions will spread into the remainder of the region Thursday and remain in place through the weekend. For those areas with dry fuels, critical fire weather conditions will begin this afternoon across southwestern Utah and spread through the remainer of southern and eastern Utah Thursday.

Deep mixing will continue, with mixing heights averaging around the 80-97th percentile through Thursday, exceeding 90-99th percentile by Sunday across northern and central Utah, and 70-90th percentile across southern Utah.

SLC WATCHES/WARNINGS/ADVISORIES

UT...None. WY...None.