Area Forecast Discussion
Issued by NWS Jackson, KY

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000 FXUS63 KJKL 160800 AFDJKL AREA FORECAST DISCUSSION National Weather Service Jackson KY 300 AM EST Thu Feb 16 2017 .SHORT TERM...
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(Today through Friday) Issued at 300 AM EST THU FEB 16 2017 A ridge of high pressure will remain in place across the region for the next few days, bringing warm and dry weather to eastern Kentucky. Scattered to broken low and middle level clouds will move across the today, as a northwesterly flow aloft, associated with a large area of low pressure aloft currently centered over New England, sends a surge of moisture off the western Great Lakes across the area. The clouds should scatter out by late today. We should see periods of partly to mostly cloudy skies through out the day. The partly cloudy skies will likely persist through Friday morning, before the New England low finally pulls off to the east, taking its cloud cover with it. We should see mostly clear skies and light winds across the area on Friday. Temperatures will be running above normal today and tomorrow, with highs ranging from the mid 40s to lower 50s today, and in the lower 60s on Friday. Tonights lows will vary quite a bit between ridges and valleys, as light winds, mostly clear skies, and dry conditions set up across the area. Our valleys are expected to fall into the upper 20s, while the surrounding ridges only drop into the mid to upper 30s. .LONG TERM...(Friday night through Wednesday) Issued at 300 AM EST THU FEB 16 2017 The models are in good agreement with an amplified but progressive long wave pattern to remain in place across the CONUS through the period. Smaller scale features are fairly well agreed upon through the weekend, and then confidence decreases a bit more into next week, with timing and evolution differences. Well above normal temperatures will continue to be the main weather highlight through the extended. Highs will average in the 65 to 70 degree range throughout the period, with the warmest temperatures occurring early next week. Lows will generally average in the 40s, although did undercut the blended lows for Friday night, as valleys look to decouple into the 30s, with light southwesterly flow in place, and a mostly clear night on tap. Rain chances will increase Saturday into Saturday night as an upper level low moves from the Arklatex region to the TN/KY border. Rain showers will be exiting by Sunday morning, as the system pulls away to the east. Upper level ridging will then take hold into early next week, before another system approaches for Tuesday night into Wednesday. There is disagreement with how much moisture will be drawn in from the main feature, another upper level low that will be passing east across the Gulf of Mexico. The GFS is a little more progressive, and also shows more influence from the northern stream, while the ECMWF remains more detached and slower. Given this uncertainty, the POPs were limited to 30 to 40% through the period.
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&& .AVIATION...(For the 06Z TAFS through 06Z Thursday night) ISSUED AT 1244 AM EST THU FEB 16 2017 Although an increase in high and mid clouds is expected later tonight across the northeastern two thirds of the area, VFR conditions are expected to prevail throughout the period with surface high pressure dominating. Northwest to west winds should generally remain light and out of the west through around 10Z this morning, before increasing to around 7Kts by around 15Z today. The clouds should begin to scatter out by 16Z or so at LOZ and SME, with BKN middle level clouds persisting everywhere else. && .JKL WATCHES/WARNINGS/ADVISORIES... NONE. && $$ SHORT TERM...AR LONG TERM...GEOGERIAN AVIATION...AR is the U.S. government's official web portal to all federal, state and local government web resources and services.