Area Forecast Discussion
Issued by NWS Greer, SC

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252 FXUS62 KGSP 100600 AFDGSP Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 200 AM EDT Mon Jun 10 2024 .SYNOPSIS... A cold front moves south of our area becoming stationary through mid week with dry conditions under weak high pressure for Monday through Thursday. Isolated to widely scattered showers and thunderstorms are expected by next weekend as a weak cold front approaches from the north. Temperatures are expected to be well above normal at end of the week. && .NEAR TERM /THROUGH TODAY/...
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Key Messages... 1) Scattered to numerous showers are expected this morning, mainly south of the I-85 corridor. 2) Drier conditions and cooler temperatures return this afternoon. As of 150 am EDT Monday: A cold front is sagging slowly southeast near the southern boundary of the CWA early this morning. A small batch of showers and embedded TS over north GA will impact the southwest quadrant of our CWA between ~07Z and sunrise, where locally up to a half inch of rainfall is possible this morning. Otherwise, a very broad upper trof/closed upper low will continue to amplify over the eastern CONUS thru the period. The trof axis is expected to linger just to our north towards the end of the period. The cold front will stall out just to our south this morning overnight, eventually washing out later today into Tuesday as broad Canadian high pressure spreads over our area. Showers are expected to linger across our southern into late morning, but should taper off by around noon as lower theta-E air gradually filters through the area. Temperatures will be cooler today, with highs about a category below normal for the second week of June.
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&& .SHORT TERM /TONIGHT THROUGH WEDNESDAY/... As of 205 PM EDT Sunday: Short waves drop across the area through an upper trough on Tuesday. The trough moves east Wednesday with weakening NW flow over our area. The cold front from the near term slowly moves south away from the area Tuesday with dry high pressure building in on Wednesday. Can`t rule out an isolated shower Monday evening with lingering low level moisture and weak forcing, but chance too low to include in the forecast for now. It will be breezy Monday night and Tuesday though. Dry conditions and light winds expected Wednesday. Below normal lows Monday night rise to near normal Tuesday night. Near normal highs Tuesday rise a couple of degrees above normal Wednesday. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... As of 220 PM EDT Sunday: Still some run to run consistency issues with the guidance. That said, there does seem to be a trend toward a drier forecast. A series of weak short waves move through the flow, mainly north of our area through Friday. Then a semblance of a Rex Block develops Saturday into Sunday with an upper anti-cyclone sliding into the Southeast by Sunday, and a weak upper low moving east across the Gulf of Mexico. The result is weak and generally dry high pressure Wednesday and Thursday with the potential for diurnal convection Saturday as a weak cold front crosses the area. Diurnal convection possible again Sunday as a moist southerly flow develops. A warming trend takes place with highs nearly 10 degrees above normal by Saturday, which drop back a few degrees for Sunday. Lows rise to around 10 degrees above normal. && .AVIATION /06Z MONDAY THROUGH FRIDAY/...
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At KCLT and elsewhere: A frontal boundary will continue sagging south across the region through the morning. Ample moisture will linger in the vicinity of the boundary this morning, but extensive high and mid-level clouds will limit the potential for restrictions in low stratus and/or fog this morning. Meanwhile scattered showers, and perhaps a TS or two are expected to develop in or move into the area prior to daybreak...mainly impacting upstate South Carolina. KAND stands the greatest chance of seeing shower activity, and a tempo is included there from 07-11Z. VCSH is carried at KGMU/KGSP, while shower chances appear minimal at the NC terminals. Otherwise, other than a tempo for 5SM at KAVL later this morning, VFR is forecast through the period. Cloud cover is expected to steadily clear from around sunrise through the morning, with mostly SKC conditions at all terminals by early afternoon. Light winds with a northerly component are anticipated through much of the period, except for a brief excursion to light SW this afternoon. Outlook: Dry sfc high pressure will become established this afternoon, and generally remain through the end of the work week, with little chance for convection or restrictions.
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&& .GSP WATCHES/WARNINGS/ADVISORIES... GA...None. NC...None. SC...None. && $$ SYNOPSIS...DEO NEAR TERM...JDL/JPT SHORT TERM...RWH LONG TERM...RWH AVIATION...JDL