textproduct: Morristown

KEY MESSAGES

Updated at 638 AM EDT Sun May 10 2026

- Patchy dense fog possible early this morning. Be careful on your morning commute.

- Mostly dry today, with increasing rain chances tonight associated with a cold front. Overall, light accumulation with nothing strong expected.

- Another cold front around Wednesday to bring the next potential round of light rainfall.

- The heat gets turned up next weekend with 80s to near 90 degree highs in the valley.

DISCUSSION

Issued at 110 AM EDT Sun May 10 2026

There is the possibilty of some patchy dense fog this morning, so if you will be commuting early on this Mother's Day, take caution.

Troughiness will continue to hold strong for much of the week with quasizonal to northwesterly flow across the area. Due to such, the lack of moisture return and southwesterly flow will result in a fairly weak cold frontal passage later today and late tonight. In fact, it will be quite dry much of the day with minimum RHs falling into the 30s and 40s percent range. Total QPF from the system continues to shift more north and generally light, with amounts in the hundredth to tenth range. Before the system's exit, northwesterly flow induced showers may keep the chances going, especially across the higher terrain tomorrow afternoon.

Temperatures markedly cooler tomorrow into Tuesday morning. The potential for frost Tuesday morning has lessened with this latest forecast. Lows may be near 40 or warmer now instead of in the upper 30s. Still perhaps a chance in the highest elevations of SW Virginia and NE Tennessee.

A low pressure system that will shift down from central Canada and traverse the Great Lakes will bring the next cold front to the area around Wednesday. The core of the moisture of this system appears it will stay well north. So, another chance of possible light accumulation mid-week.

After cooler temperatures Thursday, a noticeable warming trend will begin and bring some hot temperatures next weekend. The locked in troughing will finally shift east and be replaced by ridging from the west. Above average temperatures will continue a week beyond the forecast, according to the CPC. Mostly dry weather can be expected the end of the week and into the weekend with possible light rain chances the middle of next weekend.

AVIATION

(12Z TAFS) Issued at 638 AM EDT Sun May 10 2026

Fog at TRI will lift in the next hour or two. VFR conditions will pervail at all sites through the rest of the period. Broken VFR cigs will increase tonight, with a chance of showers arriving near 12Z tomorrow.

PRELIMINARY POINT TEMPS/POPS

Chattanooga Airport, TN 85 60 76 52 / 0 20 30 0 Knoxville McGhee Tyson Airport, TN 82 57 73 48 / 0 20 50 0 Oak Ridge, TN 83 56 73 47 / 0 40 50 0 Tri Cities Airport, TN 79 52 69 42 / 0 40 60 0

MRX WATCHES/WARNINGS/ADVISORIES

NC...NONE. TN...NONE. VA...NONE.