textproduct: Greenville-Spartanburg
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
WHAT HAS CHANGED
The Aviation Discussion was updated.
KEY MESSAGES
1. Dry and hot conditions today and Sunday. Shower and thunderstorm chances return early next week.
DISCUSSION
Key message 1: Dry and hot conditions today and Sunday. Shower and thunderstorm chances return early next week.
Deep layer ridging builds over the southeastern CONUS into the Great Lakes through Sunday. Periods of cirrus spread over the area today and Sunday, along with some fair weather cumulus. Highs will be above normal, with highs around 90 over the I-77 corridor. Dewpoints will be higher today, but still in the comfortable range, especially for early June. They do creep back into the 60s on Sunday bringing more humid conditions but not quite into the muggy range.
A narrow but deep trough will move into the eastern CONUS Monday through Wednesday breaking down the ridge. Weaker shortwaves cross the area Thursday and Friday. A backdoor cold front drops into the area Monday and stalls over the area Tuesday. A weak cold air damming high sets up by Tuesday with temps near to a few degrees below normal. This also brings a return of mainly diurnal convection. The front washes out and the high moves into the Atlantic with a moist southerly flow developing. This brings a warming trend with highs in the 90s Thursday and Friday. Mainly diurnal convection continues each day.
AVIATION /12Z SATURDAY THROUGH WEDNESDAY/
At KCLT and elsewhere: Dry, VFR conditions will continue at the TAF sites through the period. That said, there will be early morning mountain valley fog that will be near but not at KAVL. Cirrus, occasionally thick, will spread across the area through the period. Some high based Cu expected during the afternoon. Light SW to light and variable wind this morning picks up speed from the SW during the day, becoming light during the evening. Another round of mountain valley fog near but not at KAVL overnight.
Outlook: Expect dry, VFR conditions Sunday, although the potential for morning mountain valley fog/low stratus will continue. Diurnal convection returns Monday continuing through the middle of the week.
GSP WATCHES/WARNINGS/ADVISORIES
GA...None. NC...None. SC...None.
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