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Area Forecast Discussion
Issued by NWS Pueblo, CO
Issued by NWS Pueblo, CO
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863 FXUS65 KPUB 142345 AFDPUB Area Forecast Discussion National Weather Service Pueblo CO 545 PM MDT Wed Aug 14 2024 .KEY MESSAGES... - Isolated strong to severe storms possible this evening north of Highway 50 on the plains. - Mostly dry and slightly warmer Thursday with only some isolated afternoon mountain thunderstorms. - Drier and warmer into the weekend with increasing coverage of daily showers and thunderstorms again for the late weekend into early next week. && .SHORT TERM /THROUGH TONIGHT/... Issued at 224 PM MDT Wed Aug 14 2024 Currently...As expected, convection is rather sparse this afternoon, as air mass has dried considerably versus 24 hrs ago. Finally seeing some isolated activity over nrn El Paso County as of 230 pm, as stronger upward vertical motion over nrn CO brushes by. Mountains appear significantly drier this afternoon, with only very shallow/weak convection so far, as PWAT has dropped toward a half inch and surface dewpoints have fallen at least 10 degf versus yesterday at many locations. Tonight...Mainly isolated convection expected this evening, with the greatest chance for storms on the plains along and north of Highway 50 as Palmer Divide convection moves east. Could see a strong/severe storm as activity approaches the KS border and encounters deeper moisture/instability, especially Kiowa County. Most activity ends around sunset, though at least a few CAMs, including the HRRR, develop a second round of storms along the Arkansas River from La Junta eastward beginning around midnight, persisting until early morning Thu. This activity seem to be forced by a weak boundary dropping south through the plains and modest pocket of instability lingering across the lower Arkansas Valley. Will keep some low pops in place to account for this possibility, mainly near the KS border. Thursday...Even less in the way of convection expected as air mass continues to dry under wly flow aloft. Will keep some low pops for isolated mountain storms in place for the afternoon, though gusty winds/brief lightning/sprinkles may be the best that most storms can do given the set-up. On the plains, just enough moisture may linger for some late day storms, though chances look better in the evening after 00z, so won`t include any lower elevation pops for the afternoon at this point. Given increased sun and continued drying, expect max temps to drift upward a few degf at most locations, with mid 90s becoming more widespread on the plains. && .LONG TERM /THURSDAY THROUGH WEDNESDAY/... Issued at 224 PM MDT Wed Aug 14 2024 Little change in the ongoing forecast of drier and warmer conditions for the end of the work week into the early weekend, as model data supports much drier and warmer air in place across the Central Rockies under a building upper level ridge. With that said, we will see a continued downward trend in daily convection, with mainly isolated high based showers over the higher terrain for Thursday through Saturday. There will, however, be a chance of some nocturnal convection Thursday night into early Friday morning across the far southeast Plains associated with the expected development of a low level jet across the Colorado and Kansas border. With the warmer air aloft and decreased moisture and convection, temperatures will warm back to above seasonal levels, with highs well into the 90s to around the century mark expected across the Plains and mainly in the 60s to the lower 80s across the higher terrain. By Sunday and continuing into the middle of next week, model data continues to support increasing available moisture within southwesterly flow aloft, as the upper high slowly shifts south and east of the Central Rockies. This will again lead to a slow increase in coverage of afternoon showers and thunderstorms areawide, with temperatures remaining at to slightly above seasonal levels. && .AVIATION /00Z TAFS THROUGH 00Z FRIDAY/... Issued at 545 PM MDT Wed Aug 14 2024 VFR conditions are expected to prevail for all TAF sites (KALS, KCOS, and KPUB) throughout most of the forecast period. There is a very low probability (less than 20%) of VCSH/VCTS at KCOS and KPUB through 05Z and after 20Z, although not enough confidence to put it in either of the TAFs at this time. Winds will be primarily influenced by diurnal wind regimes throughout the forecast period at all terminals. -Stewey && .PUB WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...PETERSEN LONG TERM...MW AVIATION...STEWARD