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Area Forecast Discussion
016 FXUS64 KHUN 261548 AAA AFDHUN Area Forecast Discussion...UPDATED National Weather Service Huntsville AL 1048 AM CDT SUN JUN 26 2016 .UPDATE... Morning update. && .DISCUSSION... Today will feel like a copy of yesterday, hot with scattered showers and thunderstorms. However, temps are warming up a little slower than yesterday due to the lingering cloud cover and a few showers that were in our eastern zones. 15Z temps are in the mid 80s but will reach the low to mid 90s again today. Heat index values at 15Z are already reaching 90 degrees. Those values will be climbing up to 100 to 105 degrees by this afternoon so don`t forget those heat safety tips! The boundary that sparked off development yesterday is still draped north to south across east AL and central TN. The boundary combined with daytime heating, a weak upper-level disturbance to our NW and wedge front to the east...will support scattered showers and thunderstorms this afternoon. Did increase POPs a little and adjusted the timing heading into this afternoon as well. Kept the trend of slightly higher POPs in NE AL where the boundary is, however a strong storm cannot be ruled out across the board. JMS && .AVIATION... (Issued 640 AM CDT SUN JUN 26 2016) For 12Z TAFs: Upper level high pressure remains over the region today but at the surface a frontal boundary has stalled out and is located along and east of I-65. This should be the focus for the development of thunderstorms later today. However, as is typical in the summer time isolated storms are possible across the entire TN Valley this afternoon. Have kept a VCTS in at both terminals from 19Z to 02Z due to the low confidence in the timing of storms and if they will move over either terminal. Expect very heavy rain with brief drops to IFR conditions, strong gusty winds, frequent lightning, and small hail near any thunderstorms that form today. Guidance has convection tapering off after 02Z but could see an isolated storm continue through 06Z. Patchy fog is possible again tonight from 08Z to 13Z. Stumpf && .HUN Watches/Warnings/Advisories... AL...NONE. TN...NONE. && $$ For more information please visit our website at weather.gov/huntsville.