Knoxville, TN Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Knoxville, TN

June 20, 2024 2:05 PM EDT (18:05 UTC) Change Location
Sunrise 6:17 AM   Sunset 8:57 PM
Moonrise 7:08 PM   Moonset 3:41 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Knoxville, TN
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Area Discussion for - Morristown, TN
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FXUS64 KMRX 201747 AFDMRX

Area Forecast Discussion National Weather Service Morristown TN 147 PM EDT Thu Jun 20 2024

New AVIATION

UPDATE
Issued at 1100 AM EDT Thu Jun 20 2024

A mostly sunny morning across the forecast area today with temperatures warming up to the upper 70s to lower 80s at late morning. Dew points are still running in the lower to mid 60s.
Current forecast looks good with warmer temperatures today as clouds from the tropical system have moved away. Upper ridge is holding strong over the mid Atlantic and Ohio Valley. Winds should be light with only scattered clouds. Heat index values should only reach into the lower to mid 90s, just above actual highs. No zone forecast update needed.

SHORT TERM
(Today and tonight)
Issued at 258 AM EDT Thu Jun 20 2024

Key Messages:

1. Patchy fog early this morning mainly near area waterways.

2. Hot and dry conditions continue with strong ridging in place.

Discussion:

Early this morning, patchy fog has developed mainly near area waterways. Fog will dissipate soon after sunrise.

Also, thicker ci/cs over far southwest Virginia, northeast Tennessee, and southwest North Carolina will move out this morning. Overall, mostly clear sky but do expect scattered cloud cover development over the orographic areas this afternoon.

NAFES anomalies continues to depict a strong upper ridge across the mid-Atlantic states into the Tennessee valley and Appalachians.
Dry airmass with model soundings depicting PWs in the bottom quartile with a subsidence inversion around the 700mb layer.

Surface ridging into the southern Appalachians with weak pressure gradients will produce light winds.

For tonight, dry airmass remains with mostly clear sky.

LONG TERM
(Friday through Wednesday)
Issued at 258 AM EDT Thu Jun 20 2024

Key Messages:

1. Above average temperatures continue with strong ridging in place.

2. Diurnal convection probabilities increasing Sunday into early next week.

Discussion:

Anomalously strong ridging continues across the Eastern CONUS Friday through the weekend with 500mb heights of 594 to 596 dam across the Tennessee and Ohio Valleys. NAEFS anomalies show this near the max of climatology. The 850mb ridge also remains across the Ohio Valley with weak easterly flow resulting in subsidence and limited moisture transport across the region on Friday and Saturday. This will keep LFC heights higher with limited probabilities for diurnal convection on Friday and Saturday.

The upper ridge retrogrades and flattens across the Ohio Valley on Sunday as a shortwave trough and associated surface frontal features moves eastward across the Great Lakes and Ohio Valley. The 850mb ridge shifts east with southerly flow resulting in increasing moisture beginning Sunday. This increased moisture and lower upper heights will increase instability with higher probabilities for diurnal convection into early next week. While timing of thunderstorms outside of diurnal convective trends is still uncertain, northwesterly upper level flow and the general synoptic pattern will bear watching with potential MCS/MCV thunderstorm complexes riding the periphery of the ridge.

AVIATION
(18Z TAFS)
Issued at 140 PM EDT Thu Jun 20 2024

Upper and surface ridging persists across east Tennessee producing VFR conditions at all TAF sites through early tonight.
Some MVFR fog is expected to form near TRI for a few hours Friday morning so included a 3 hour group at 5SM from 09-12Z Friday.
Surface ridge along with a weak pressure gradient will keep winds light.

PRELIMINARY POINT TEMPS/POPS
Chattanooga Airport, TN 93 72 95 73 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 91 70 93 72 / 0 0 10 0 Oak Ridge, TN 91 70 93 72 / 0 0 10 0 Tri Cities Airport, TN 90 64 92 68 / 0 0 10 0

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




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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KDKX KNOXVILLE DOWNTOWN ISLAND,TN 4 sm10 minvar 0410 smClear88°F68°F52%30.31
KTYS MC GHEE TYSON,TN 11 sm12 minENE 0810 smPartly Cloudy88°F66°F49%30.31
KGKT GATLINBURGPIGEON FORGE,TN 24 sm9 minN 0710 smClear88°F66°F49%30.31
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Knoxville/Tri Cities, TN,




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