FXUS64 KMRX 221723 AFDMRX Area Forecast Discussion National Weather Service Morristown TN 123 PM EDT Sun Mar 22 2026 ...New AVIATION... .KEY MESSAGES... Updated at 120 PM EDT Sun Mar 22 2026 - Unseasonably warm and breezy Sunday with a low chance of rain returning Sunday night/Monday morning, mainly north of interstate 40. - Dry and seasonally cooler conditions are expected Monday, followed by a warming trend and returning rain chances late in the week. && .DISCUSSION... Issued at 248 AM EDT Sun Mar 22 2026 A low level SW flow will continue today as a low pressure system tracks from the central Plains to the lower OH Valley, tightening the pressure gradient across our area. Expect some gusty SW winds in the TN Valley, around 20-30 mph at times. Highs today will be well above normal - in the lower to mid 80s in most spots. This will be within a few degrees of record highs - the TRI record of 81 could be tied or broken, as well as OQT's record high of 83. Date Chattanooga Knoxville Tri-Cities Oak Ridge 03-22 89(1907) 87(1907) 81(1938) 83(2011) Tonight and Monday morning, a shortwave trough will move across the Great Lakes into the Mid-Atlantic region. The associated cold front will move across our area, but dynamics with upper trough and jet will be mainly north of the area. A line of weakening showers and a few elevated thunderstorms will move across southwest Virginia and northeast Tennessee between 2 and 8 AM. Main chances of rain will be north of interstate 40, with only light amounts between a tenth and a quarter inch. A colder air mass will build into the area on Monday behind the cold frontal passage. High pressure over the Great Lakes and OH Valley region will promote drier and seasonally cooler conditions through Tuesday. By Wednesday, broad ridging will expand from the southwest with high pressure shifting eastward, leading to a return of southerly flow and warming temperatures. Rain chances return late in the week as a front settles somewhere in the TN/OH Valley region. The position of a large high pressure ridge across the Gulf Coast region will mean moisture will be limited, but the front could linger in the area for a few days as it remains nearly stationary and parallel to the midlevel flow. && .AVIATION... (18Z TAFS) Issued at 120 PM EDT Sun Mar 22 2026 Increasingly breezy southwesterly winds and mostly clear conditions are expected for the rest of the afternoon and into the evening. The strongest winds will be at TYS and TRI where frequent gusts over 20 kts are expected. For CHA, these winds will be more southerly and not quite as strong. Overnight, these winds will continue at TYS and TRI with CHA seeing a notable decrease. Because of this trend, LLWS was included as winds a few thousand feet up will reach 40 kts. Remnants from earlier storms will move into northeastern portions of the area in the morning as showers. Most places will stay dry, but MVFR ceilings are forecast at all sites. Winds will also shift to more northerly. && .PRELIMINARY POINT TEMPS/POPS... Chattanooga Airport, TN 61 74 47 69 / 10 0 0 10 Knoxville McGhee Tyson Airport, TN 57 68 43 67 / 20 10 0 10 Oak Ridge, TN 56 68 43 67 / 30 10 0 10 Tri Cities Airport, TN 53 63 37 64 / 50 20 0 0 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$ DISCUSSION...DGS AVIATION...BW