Marine Weather and Tide Forecast for Oak Ridge, TN

LONG TERM
(Friday through Thursday)
Issued at 138 AM EDT Thu May 22 2025

Key Messages:

1. Light sprinkles possible Saturday, but mostly dry with mix of clouds and sun.

2. Rain chances increase on Sunday into early next week as a low pressure system approaches the region.

3. Continued light rain showers or sprinkles possible behind the low pressure system towards the mid to late part of next week with much cooler than average temperatures.

Discussion:

Ridging begins to build back across the region from the west with isentropic lift aloft increasing clouds and the potential of some light rain showers or sprinkles, especially south of Interstate 40, on Saturday. Most areas are forecast to remain dry with any accumulating precipitation being very light.

Isentropic lift along a stationary or warm frontal boundary across the Tennessee Valley will increase on Sunday afternoon and night with increasing area-wide rain chances. Most of this rain is forecast to be light.

By Monday, the area of low pressure is forecast to move eastward with upper-level troughing becoming more amplified across the region behind the cold front. 1 to 2 inches of rainfall are expected area-wide with localized higher spots. At this time, no major impacts are expected. However, it will bear watching on how this system evolves and it's exact track. If we do receive more convection and it trains over the same spots, we could have some localized flooding issues early next week.

By mid-week, the upper-level wave pattern becomes very amplified with anomalous troughing across the Southern Appalachians. This will result in cooler weather with sporadic light showers possible, mainly with a diurnal trend in coverage that peaks in the afternoon peak heating hours. CPC continues to highlight the Tennessee Valley having a higher probability of cooler than normal temperatures for much of the next 8 to 14 days.

AVIATION
(12Z TAFS)
Issued at 601 AM EDT Thu May 22 2025

VFR conditions prevail today. A few sprinkles or virga will be possible this morning at CHA and this evening at TRI, but no accumulating precipitation is expected. Westerly winds remain gusty at TYS and TRI this afternoon with decreasing winds after sunset this evening.

PRELIMINARY POINT TEMPS/POPS
Chattanooga Airport, TN 78 56 77 53 / 10 20 0 10 Knoxville McGhee Tyson Airport, TN 74 53 72 49 / 10 10 0 10 Oak Ridge, TN 74 52 72 48 / 0 10 0 10 Tri Cities Airport, TN 70 47 67 43 / 10 10 0 0

MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.