Area Forecast Discussion
Issued by NWS Amarillo, TX
Issued by NWS Amarillo, TX
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033 FXUS64 KAMA 170521 AFDAMA Area Forecast Discussion National Weather Service Amarillo TX 1221 AM CDT Tue Sep 17 2024 ...New AVIATION... .KEY MESSAGES... Issued at 219 PM CDT Mon Sep 16 2024 - Non-severe thunderstorms will be possible across the eastern Panhandles and the far western Panhandles this afternoon and evening. - Severe thunderstorms will be possible across the western half of the Panhandles Tuesday afternoon and evening. Damaging winds will be the main threats. However a hailstone to the size of a quarter can not be ruled out. - Thunderstorms may linger in the southeast Wednesday with more storms Friday and Saturday. && .SHORT TERM ... (This evening through Tuesday night) Issued at 219 PM CDT Mon Sep 16 2024 Isolated thunderstorms will be possible across the eastern Panhandles this afternoon and evening along a surface trough which extends from just east of Guymon to Claude. This is where the best instability and shear exists. A shower or thunderstorm may graze the far western Panhandles this evening in association with a weak short wave trough moving northeast through New Mexico. We should have a much better chance of showers and thunderstorms Tuesday and Tuesday night. The base of a negatively tiled trough is expected to move northeast across the Panhandles Tuesday afternoon and evening. This trough is expected to spark a line of thunderstorms over eastern New Mexico Tuesday afternoon and with time, these storms are expected to move across the western Panhandles. It is in question just how far east these storms can move into the central and eastern Panhandles as shear and instability will be weaker there. Some of the storms may become severe with hail to the size of quarters and damaging wind gusts mainly across the western half of the Panhandles where the shear and instability are expected to be the greatest with the passing short wave. && .LONG TERM ... (Wednesday through next Sunday) Issued at 219 PM CDT Mon Sep 16 2024 Thunderstorms will be possible across the eastern Panhandles on Wednesday as enough instability and shear may linger ahead of a surface trough. But these storms should quickly move off into western Oklahoma during the evening hours. There may be a lull in thunderstorms on Thursday as an upper level ridge starts to build northward. But more showers and thunderstorms will be possible Friday and Saturday as the ridge moves off to the east and allows an upper level low to approach from the west. This low will still be to the west of our area on Friday, but the instability will increase along with the shear to help thunderstorm development. The upper level low is expected to move across the region Saturday night which will help to keep showers and thunderstorms in the forecast with the colder air moving across aloft to help with the instability. Then showers and thunderstorms are expected to end by Sunday as the upper level system moves east away from our area. High temperatures will generally be above normal Tuesday through Friday with readings in the 80`s and 90`s. Highs should then cool back into the 70`s and 80`s for the weekend. && .AVIATION... (06Z TAFS) Issued at 1217 AM CDT Tue Sep 17 2024 Winds through the day will be out of the south at 15-20 kts gusting to 25-30 kts. There will be a chance for thunderstorms to spread east beginning late this afternoon and into the evening, potentially impacting all terminals. Refinements to the timing may be needed in future forecast packages. && .PRELIMINARY POINT TEMPS/POPS... Amarillo TX 91 64 93 67 / 10 50 20 10 Beaver OK 93 63 94 66 / 10 50 10 10 Boise City OK 88 57 87 55 / 30 50 0 0 Borger TX 96 65 97 68 / 10 50 20 10 Boys Ranch TX 92 63 93 63 / 30 60 10 10 Canyon TX 90 62 92 65 / 20 50 10 10 Clarendon TX 92 65 94 67 / 0 30 20 20 Dalhart TX 88 57 88 55 / 30 60 0 10 Guymon OK 92 60 92 59 / 20 60 0 0 Hereford TX 91 63 93 64 / 20 60 10 10 Lipscomb TX 93 65 95 68 / 0 30 20 20 Pampa TX 92 64 93 67 / 10 40 20 20 Shamrock TX 93 66 95 68 / 0 30 20 20 Wellington TX 95 67 97 69 / 0 20 20 20 && .AMA WATCHES/WARNINGS/ADVISORIES... TX...None. OK...None. && $$ SHORT TERM...15 LONG TERM....15 AVIATION...52