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

- Freeze Warning and Frost Advisory Tonight/Wednesday morning. Freeze Warning parts of northeast FL and southeast GA; Frost Advisory surrounding the

- Dangerous Wildfire Conditions this Afternoon. Long Durations of Critically Low Humidity Values at All Inland Locations. Severe to Extreme Drought Conditions Continue Region-Wide

- Moderate Risk of Rip Currents at Area Beaches on Wednesday & Thursday

- Beneficial Rainfall and Isolated TStorms Thursday Afternoon through Saturday

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/

MAIN HAZARDS THIS PERIOD: FROST/FREEZE CONDITIONS

High pressure will build across central FL Tonight. With the cold airmass in place, and the high providing mainly clear skies and light winds, temperatures will fall to around freezing in many locations, with frost forming.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/

Main Highlights During the Period: - Light Freeze with Widespread Frost Wednesday Morning

- Warming Trend Begins on Wednesday & Thursday

Area-wide showers and storms will develop across the area Friday and into Saturday ahead of the advancing cold front pressing down from out of the north. Lingering showers will have largely become dispersed and moves offshore by the end of the weekend as dry weather associated with high pressure settles over the region following the frontal passage. Clearing skies and predominantly dry weather will carry over into the beginning of next week. Temperatures will remain above average through the weekend and into next week.

LONG TERM /FRIDAY THROUGH TUESDAY/

Main Highlights During the Long Term Period: - Beneficial Showers and Possibly a Few Storms Late in the Week through the Upcoming Weekend

Initially dry conditions will be in placed on Wednesday as high pressure gradually shifts eastward. A moist prevailing southwesterly flow will build in over southeast Georgia by Thursday, forming between high pressure ridging to the south and a gradually advancing frontal boundary to the north, with showers with a potential for embedded thunderstorms forming over inland portions of southeast Georgia late Thursday with conditions becoming more widespread overnight and into early Friday. Temperatures will trend warmer after midweek with daily high temps reaching into the upper 70s by Thursday with overnight low temperatures dropping down into the mid to upper 50s by the end of the forecast period.

AVIATION /00Z WEDNESDAY THROUGH 00Z THURSDAY/

Prevailing VFR conditions this period.

MARINE

Modified high press to the west will push across this evening with a ridge axis remain to the south through Thursday night leading to persistent offshore winds as a cold front approaches from the northwest. The slowing front will bring showers and embedded thunderstorms across the waters early Friday morning. Lingering showers and areas of rain are likely to linger through Saturday as a weak area of low pressure slides along the stalling front. Drier conditions are expected with winds turning onshore Sunday as high pressure builds to the northeast.

Rip Currents: Prevailing offshore winds through mid-afternoon and diminishing surf heights should yield a low risk at area beaches today. A developing northeasterly ocean swell on Wednesday should increase the threat to lower-end moderate at all area beaches, with this swell expected to persist into Thursday before diminishing later this week.

FIRE WEATHER

- Minrh Values Below 30 Percent Today - Areas Of High Dispersions Wednesday And Thursday

Critically low relative humidity values continue through today, however lower wind speeds will keep conditions below Red Flag Warning or Elevated Fire Danger criteria. Prolonged southwest winds will begin to bring in more moisture Wednesday, improving minimum relative humidity values through the weekend. Winds will be breezy in the afternoons, creating areas of high daytime dispersion Wednesday and Thursday. An approaching cold front will bring showers and storms Thursday through Saturday, with winds shifting to northeasterly Saturday behind the front.

FOG POTENTIAL AND OTHER REMARKS: Significant fog developments are not expected. Frost developments are expected to develop overnight and through into Wednesday morning. Thunderstorms are the forecast for Thursday night through Saturday night.

PRELIMINARY POINT TEMPS/POPS

AMG 32 70 52 74 / 0 0 10 40 SSI 39 67 53 71 / 0 0 0 20 JAX 33 72 49 79 / 0 0 0 10 SGJ 36 71 47 77 / 0 0 0 0 GNV 31 71 46 78 / 0 0 0 0 OCF 30 71 44 79 / 0 0 0 0

JAX WATCHES/WARNINGS/ADVISORIES

FL...Frost Advisory from 1 AM to 8 AM EST Wednesday for FLZ021-038- 120-132-138-220-333-433-533-633. Freeze Warning from 1 AM to 8 AM EST Wednesday for FLZ023-024- 030-031-035-136-137-140-232-236-237-240-322-340-422-425- 522. GA...Frost Advisory from 1 AM to 8 AM EST Wednesday for GAZ132>136- 149-154-162-166. Freeze Warning from 1 AM to 8 AM EST Wednesday for GAZ151>153- 163-165-250-264-350-364. MARINE...None.