Area Forecast Discussion
Issued by NWS Huntsville, AL
Issued by NWS Huntsville, AL
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628 FXUS64 KHUN 151950 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 250 PM CDT Sat Jun 15 2024 ...New NEAR TERM, SHORT TERM... .NEAR TERM... (Tonight) Issued at 249 PM CDT Sat Jun 15 2024 Very hot conditions prevailing across the Tennessee Valley, with temperatures in the low to mid 90s this afternoon -- with heat index values between 94-102 degrees at this hour. Those with outdoor plans for the remainder of the day should consider limiting their time outdoors and those most vulnerable to heat should take extra precautions and make sure they remain in air conditioning. The afternoon Cu field will quickly diminish resulting in clear conditions once again with very warm low temperatures in the low to mid 70s -- providing very limited relief to the heat overnight. && .SHORT TERM... (Sunday through Tuesday) Issued at 249 PM CDT Sat Jun 15 2024 What could be the hottest day of the year so far will arrive for Fathers Day (Sunday), with the ridge setting up just east of the area -- with mid to perhaps upper 90s highs forecast over a vast majority of the forecast area once again. Slightly higher dewpoints will put peak heat index values between 100-104 over much of the area, with the HSV/DCU/MSL metro areas potentially reaching 105 degrees for at least an hour or two. Limited amount of Apparent T values greater than 105 prevented a Heat Advisory issuance for now, but it should be noted that major heat impacts to vulnerable populations may be felt tomorrow from the late morning through the afternoon. Those that are sensitive heat should take extra precautions and everyone should use common sense and limit their time outdoors during the peak heating of the day. Additionally, low chances for showers/storms will return to the forecast Sunday afternoon -- favored along the higher terrain of NE Alabama. This activity will pulse like in nature and very limited in duration and intensity. Main threats with the strongest storms will be localized gusty winds. The ridge will become centered further east over the Carolinas, with southerly flow continuing to advect moisture back into the area on Monday. Low chances for diurnally driven storms will exist again Monday afternoon/evening, but highs will be cooler in the lower 90s. Stronger subsidence will limit our potential for convection on Tuesday, but continued mostly sunny to partly cloudy conditions will push highs into the lower 90s again. && .LONG TERM... (Tuesday through Friday) Issued at 241 AM CDT Sat Jun 15 2024 Strong upper level high pressure on Tuesday should be situated over the Mid Atlantic with maximum heights around 594 decameters. It will build somewhat more to the NE, and amplify to near 600 decameters over the New York City region Wednesday, then weaken somewhat and build more southward in the latter portion of next week. Despite the presence of the upper ridge, deep moisture from the Gulf surging inland will keep more clouds than sun in the forecast on Tue/Wed. This moisture with precipitable water amounts nearing 2 inches across parts of NW Alabama will keep lower end chances of showers and thunderstorms on Tuesday. Despite the clouds and rain chances, rather warm and muggy conditions are forecast with highs rising to around 90, and heat index values into the mid/upper 90s. The moisture surge should be suppressed more to our west late Wednesday into Thursday, thus back to dry conditions for the rest of the abbreviated work week. High temps on Juneteenth/Wednesday will warm into the lower 90s, and mid 90s Thursday and Friday. Heat index values on Wed should range in the lower 90s, and mid 90s for Thu/Fri. && .AVIATION... (18Z TAFS) Issued at 1123 AM CDT Sat Jun 15 2024 VFR conditions will prevail at both terminals through the period, with light winds and a mostly clear sky. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...AMP.24 SHORT TERM....AMP.24 LONG TERM....RSB AVIATION...AMP