textproduct: Salt Lake City

KEY MESSAGES

- Another night of hard freeze conditions Friday night into Saturday morning with only patchy freezing conditions Sunday before warming up.

- High pressure will return by the weekend, bringing dry conditions with a steady warming trend.

DISCUSSION

Conditions are clearing in the post-frontal environment as drier air filters into the region. A cold airmass left in place resulted in most valley locations above 3000 feet elevation experiencing freezing conditions this morning. Another round of widespread freezing temperatures similar to this morning will occur again tonight into Saturday morning. Temperatures will begin to warm heading into the weekend with freezing conditions Sunday morning becoming more patchy, primarily across eastern Box Elder County and the valleys of central Utah down through Cedar City.

A ridge will build into the area this weekend with dramatically warming temperatures. By Monday and Tuesday temperatures will be approaching the upper 70s to low 80s for the most valley locations with mid 80s across lower Washington county. Conditions will remain dry and stable through Tuesday of next week before a closed low begins to move into the western CONUS.

This closed low will begin to increase southerly winds by next Tuesday with ~50% chance of advisory level winds across the western valleys. Given the increased uncertainty in timing for these closed lows there is a split in the ensemble guidance. 56% of the members bring precipitation into the area by late Wednesday, while the other 44% of members hold this precipitation off until Thursday. Additionally, most of the precipitation in the members is focused across the northern half of the CWA. Mean troughing remains across the west for the remainder of the week after this low moves through which will keep conditions cooler and wetter.

REST OF UTAH AND SOUTHWEST WYOMING

VFR conditions across the airspace are expected be maintained, though patchy mountain obscuration remains possible across the highest mountains of northern Utah through the remainder of the daylight hours. Moderately gusty north to northeast winds (~10-25 mph) across southeastern Utah will gradually decrease late afternoon into the early evening.

SLC WATCHES/WARNINGS/ADVISORIES

UT...Freeze Warning until noon MDT today for UTZ102>106-114>116- 118>122-129-130.

Freeze Warning from 8 PM this evening to noon MDT Saturday for UTZ102>106-114>116-118>122-129-130.

WY...None.