textproduct: Columbia

WHAT HAS CHANGED

A freeze observed this morning will end the growing season with no additional frost/freeze products issued until spring. Aviation Discussion updated for 12z TAF issuance.

KEY MESSAGES

- 1. Below normal temperatures are expected to persist through early next week, moderating by mid next week.

DISCUSSION

Key Message 1: Below normal temperatures are expected to persist through early next week, moderating by mid next week.

Broad high pressure will continue to usher a chilly airmass into the region through early this week. Afternoon high temperatures will remain below seasonal averages, generally ranging from the upper 50s to lower 60s, while overnight lows will dip into the 30s for multiple nights. Confidence is increasing among global models that upper-level ridging will gradually build overhead by mid to late week, allowing temperatures to moderate closer to seasonal normals. Unfortunately, model guidance continues to show little indication of any meaningful rainfall through the upcoming week, suggesting dry conditions will persist.

AVIATION /12Z SUNDAY THROUGH THURSDAY/

VFR conditions expected through the period with northerly winds.

Dry weather and clear skies with VFR conditions will continue through the TAF period at all terminals. Winds have become mostly light and variable this morning as high pressure continues to ridge into the area. Some lingering wind remains above a shallow inversion this morning, around 20 knots but remains weak enough to prevent llws criteria from being met. Winds increase a bit late morning, out of the north around 5 knots.

EXTENDED AVIATION OUTLOOK...Dry air will likely prevent widespread restrictions through the extended period.

CAE WATCHES/WARNINGS/ADVISORIES

SC...Freeze Warning until 9 AM EST this morning for SCZ016-018- 020>022-025>031-035-037-038-041-115-116-135>137. GA...Freeze Warning until 9 AM EST this morning for GAZ040-063>065- 077.