textproduct: Jacksonville

KEY MESSAGES

For the latest NE FL and SE GA Daily Key Messages please visit: https:/www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf

- Cold Weather Outbreak This Weekend & Early Next Week. Extreme Cold Watch Saturday Night & Early Sunday Morning. Lows in the Teens Possible Inland and Lower 20s at Coastal Locations. Dangerously Cold Wind Chills in the Teens & Single Digits

- Windy Coastal Conditions Saturday and Saturday Night. Gusts up to 40 MPH at NE FL Beaches. Gale Conditions Across Coastal Waters

- Slight Chance of Light Snowfall Saturday and Saturday Evening. Probabilities for Minor Transportation Impacts are 10-30% across Southeast GA. Little to No Snow Accumulation is Expected

AVIATION /12Z FRIDAY THROUGH 12Z SATURDAY/

VFR cloud cover will develop and incoming low level moisture may lead to passing sprinkles and potentially a brief light shower this afternoon as a weak trough drift eastward across Northeast FL. Lower VFR ceilings are likely to build in from the west with that trough as it passes. Winds will be light favoring the southwesterly to westerly direction today at most terminals. There will be a weak sea breeze that will push into KSSI this afternoon but it doesn't appear strong enough to shift winds at NE FL coastal airfields (KSGJ and KCRG). This evening winds will turn northwesterly behind the passing trough with speeds at or below 10 knots.

MARINE

High pressure will diminish and a weak trough will develop over the water through the day. This trough will develop into a low pressure system as it drifts to the northeast tonight. As that system deepens to the northwest winds will strengthen to gale-force Saturday afternoon through Sunday morning, with the peak winds expected over night Saturday into Sunday with gusts as high as 45 knots. Anticipate seas to rise quickly with waves building up to 15 feet offshore near the Gulf stream. There will be a low and diminishing chance of a mix of rain and snow showers across the waters Saturday night as moisture wraps around the low. High pressure will build from the west and over the waters during the early and middle part of next week.

Rip Currents: Low risk of rip currents today with building risk over the weekend as breakers build to 4-7 feet, especially along the NE FL coast.

FIRE WEATHER

- MinRH levels below 30 percent will be common Sunday and Monday - Widespread High daytime Dispersions Saturday and Sunday - Areas of high dispersions Monday - Low daytime Dispersions inland Wednesday

Low pressure will develop northeast of the region Today, then track away to the northeast over the weekend. A very cold airmass will be in place over the weekend. High pressure will build early in the week. A cold front will move Southeast across area Wednesday night and Thursday, bringing chances for rain.

FOG POTENTIAL AND OTHER REMARKS: Significant fog is not expected this morning or Tonight. Snow may mix with rain at times over SE GA and coastal NE FL Saturday and Saturday night.

PRELIMINARY POINT TEMPS/POPS

AMG 60 34 43 17 / 10 0 20 10 SSI 60 41 51 22 / 0 10 20 30 JAX 66 39 53 19 / 0 10 10 10 SGJ 66 44 57 22 / 0 10 10 10 GNV 68 41 53 18 / 0 10 10 0 OCF 68 42 54 18 / 0 20 10 0

JAX WATCHES/WARNINGS/ADVISORIES

FL...Frost Advisory until 8 AM EST this morning for FLZ021-023-024- 030-031-035-120-136-220-225-232-236-237-240-322-340-422- 425-522. Extreme Cold Watch from Saturday evening through Sunday afternoon for FLZ021-023-024-030-031-035-038-120-124-125- 132-136>138-140-220-225-232-233-236-237-240-322-325-333- 340-422-425-433-522-533-633. Freeze Watch from Saturday evening through Sunday afternoon for FLZ021-023-024-030-031-035-038-120-124-125-132- 136>138-140-220-225-232-233-236-237-240-322-325-333-340- 422-425-433-522-533-633. GA...Frost Advisory until 8 AM EST this morning for GAZ153-165. Extreme Cold Watch from Saturday evening through Sunday afternoon for GAZ132>136-149-151>154-162-163-165-166-250- 264-350-364. Freeze Watch from Saturday evening through Sunday afternoon for GAZ132>136-149-151>154-162-163-165-166-250-264-350- 364. Freeze Warning until 8 AM EST this morning for GAZ132>136-149- 151-152-162-163-250-264-350-364. MARINE...Gale Watch from Saturday afternoon through Sunday afternoon for AMZ450-452-454-470-472-474.