650
FXUS62 KJAX 201828
AFDJAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
228 PM EDT MON APR 20 2026
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
- RED FLAG WARNING FOR EXTREME WILDFIRE BEHAVIOR FOR INLAND
AREAS THROUGH THIS EVENING. AVOID ACTIVITIES WITH OPEN FLAMES
OR SPARKS.
- SECOND DAY OF RED FLAG CONDITIONS FOR PORTIONS OF NE FL ON
TUESDAY.
- GUSTY COASTAL & HAZARDOUS BOATING CONDITIONS TONIGHT.
- HIGH RISK OF RIP CURRENTS TODAY AT ALL AREA BEACHES.
NEAR TERM /THROUGH TONIGHT/
- EXTREME WILDFIRE WEATHER CONDITIONS THROUGH THIS EVENING
- GUSTY COASTAL CONDITIONS: RIP CURRENTS AND HAZARDOUS REC
BOATING
EXTREMELY CRITICAL FIRE WEATHER CONDITIONS ARE THE PRIMARY
WEATHER CONCERN THROUGH THE REST OF THE AFTERNOON AND EARLY
EVENING AS GUSTY NORTHEASTERLY WINDS, FREQUENTLY GUSTING BETWEEN
25-30 MPH, CONTINUE AMID EXCEPTIONALLY DRY CONDITIONS.
CONSIDERING THE ACTIVE AND GROWING WILDFIRES. THE SMOKE
GENERATED, SPECIFICALLY FROM THE PINELAND ROAD FIRE IN
CLINCH/ECHOLS BORDER IN SE GA AND THE CREWS ROAD COMPLEX ON THE
PUTNAM/CLAY COUNTY BORDER, WILL PUSH THICK SMOKE DOWNWIND (TO
THE SOUTHWEST) THROUGH THE EARLY EVENING HOURS, RESTRICTING
VISIBILITY AT TIMES.
OUTSIDE OF THE RED FLAG CONDITIONS, COOLER TEMPERATURES IN THE
DRY POST-FRONTAL AIRMASS HAVE KEPT AFTERNOON HIGHS GENERALLY IN
THE 70S DESPITE FULL SUN.
TONIGHT, WINDS WILL EASE UP AS THE PRESSURE GRADIENTS ARE
ALLEVIATED BY HIGH PRESSURE BUILDS FROM THE SPINE OF THE
APPALACHIANS EASTWARD TO THE MID ATLANTIC COAST. AS WINDS
SETTLE, TEMPERATURES WILL BECOME MUCH COOLER WITH INLAND TEMPS
FALLING TO THE MID/UPPER 40S WHILE MID/UPPER 50S ARE FORECASTED
FOR THE IMMEDIATE COASTAL AREAS.
SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/
MAIN HIGHLIGHTS THIS PERIOD:
- A RED FLAG WARNING IS IN PLACE FOR PORTIONS OF INLAND NE FL
ON TUESDAY
- CRITICALLY LOW MINIMUM HUMIDITY VALUES FOR INLAND LOCATIONS
INTO MIDWEEK
HIGH PRESSURE CONDITIONS WILL CONTINUE TO DOMINATE THE WEATHER
PATTERN THROUGH WEDNESDAY WITH FAIR WEATHER, CRITICALLY DRY
HUMIDITY VALUES OVER INLAND AREAS, AND DIMINISHING WINDS AS THE
CENTER OF HIGH PRESSURE ROTATION PASSES OVER THE FORECAST AREA
FROM OUT OF THE WEST. DIURNAL SEA BREEZE WINDS WILL BRING IN
SLIGHTLY LESS DRY CONDITIONS FOR COASTAL COUNTIES. HIGH
TEMPERATURES THROUGH MIDWEEK WILL RISE INTO THE LOWER TO MID 80S
FOR INLAND AREAS AND IN THE UPPER 70S FOR AREAS NEARER TO THE
COAST. OVERNIGHT LOW TEMPERATURES WILL DROP DOWN INTO THE LOWER
TO MID 50S OVER INLAND AREAS AND IN THE UPPER 50S AND LOWER 60S
FOR AREAS NEAR THE SHORELINE.
LONG TERM /THURSDAY THROUGH SUNDAY/
MAIN HIGHLIGHTS THIS PERIOD:
- DRY CONDITIONS PERSIST THROUGH WORK WEEK
- ISOLATED T'STORMS POSSIBLE SATURDAY AND SUNDAY
- WARMING TREND THIS PERIOD
POTENTIAL FOR SHOWERS AND POSSIBLE THUNDERSTORMS WILL INCREASE OVER
THE WEEKEND AS HIGH PRESSURE MOVES OFF TO THE EAST AND A SLIGHTLY
MORE MOIST FLOW MOVES ACROSS THE REGION FROM OUT OF THE WEST RAISING
RELATIVE HUMIDITY LEVELS ABOVE CRITICAL LEVELS BY SATURDAY AND
SUNDAY. TEMPERATURES WILL EXPERIENCE A HEATING TREND THROUGH THE END
OF THE WEEK AND INTO THE WEEKEND, WITH ABOVE AVERAGE MAX TEMPS
REACHING INTO THE LOWER 90S BY SATURDAY.
AVIATION /18Z MONDAY THROUGH 18Z TUESDAY/
GUSTY NORTHEASTERLY WINDS CONTINUE WITH GUSTS UP TO 30 KNOTS
THROUGH AROUND 21Z, WITH GRADUAL EASING THROUGH SUNSET THIS
EVENING. OTHERWISE, VFR CONDITIONS ARE EXPECTED THROUGHOUT THE
PERIOD. LOFTED SMOKE GENERATED BY EXISTING OR NEARBY WILDFIRES
MAY IMPACT APPROACHES FOR INLAND AIRFIELDS. NORTHEASTERLY WINDS
WILL DEVELOP THROUGH THE MORNING HOURS TUESDAY, TURNING
EASTERLY AS THE ATLANTIC SEA BREEZE DEVELOPS AND QUICKLY TRACKS
INLAND DURING THE EARLY AFTERNOON TUESDAY.
MARINE
GUSTY NORTHEASTERLY WINDS ACROSS THE WATERS, RESULTING IN SMALL
CRAFT ADVISORY CONDITIONS, WILL BEGIN TO EASE TONIGHT WITH SEAS
GRADUALLY LOWERING THEREAFTER. EASTERLY WINDS TUESDAY INTO WEDNESDAY
WILL BECOME SOUTHEASTERLY THURSDAY INTO FRIDAY WITH SOUTHERLY WINDS
AHEAD OF A COLD FRONT APPROACHING AND STALLING NEAR THE LOCAL WATERS
THIS WEEKEND.
RIP CURRENTS AND SURF:
HIGH RISK OF RIP CURRENTS TODAY WITH ELEVATED ONSHORE WINDS FROM THE
NORTHEAST AND SURF BREAKERS UP TO 4-6 FEET. A MODERATE TO HIGH RISK
IS ANTICIPATED FOR TUESDAY WITH EASTERLY ONSHORE FLOW.
FIRE WEATHER
STRONG HIGH PRESSURE BUILDS IN FROM THE NORTHWEST WITH BREEZY
NORTHEAST WINDS NEAR 15 MPH GUSTING TO 25 MPH AND CRITICAL MINRH
VALUES 15-20 PERCENT WILL CREATE DANGEROUS WILDFIRE CONDITIONS.
A RED FLAG WARNING IS IN EFFECT FOR ALL OF INLAND SOUTHEAST GA
IN NORTHEAST FL LOCATIONS WEST OF THE ST. JOHNS RIVER.
ADDITIONALLY THE BREEZY SURFACE AND TRANSPORT WINDS WILL CREATE
HIGH DISPERSIONS TODAY. DRY AND BREEZY CONDITIONS WILL AGAIN BE
PRESENT ACROSS INLAND NE FL ON TUESDAY, WITH A RED FLAG WARNING
SET FOR INLAND NE FL ON TUESDAY. A FIRE WEATHER WARNING HAS BEEN
SET ON TUESDAY FOR PORTIONS OF INLAND NE FL.
THE HIGH PRESSURE OVER THE AREA TUESDAY AND WEDNESDAY WILL GRADUALLY
MOVE EAST OF THE AREA THURSDAY INTO FRIDAY. THIS WILL LEAD TO THE
BREEZY EAST TO NORTHEAST WINDS TO DIMINISH ON WEDNESDAY WITH DAILY
ATLANTIC SEABREEZE MOVING WELL INLAND INTO FRIDAY. DRY CONDITIONS
WILL PERSIST AND CRITICAL MINRH VALUES OVER INLAND SOUTHEAST GA AND
PORTIONS OF NORTHEAST FL EACH DAY THIS WEEK. AREAS TO WIDESPREAD
HIGH DAYTIME DISPERSIONS ARE EXPECTED DAILY INTO AT LEAST THURSDAY
DUE TO HIGH MIXING HEIGHTS AND MODERATE TRANSPORT WIND SPEEDS.
FOG POTENTIAL AND OTHER REMARKS: THERE WILL BE POTENTIAL FOR
LOCALIZED "SUPERFOG" NEAR THE VICINITY OF ANY SMOKE FROM ONGOING
WILDFIRES
PRELIMINARY POINT TEMPS/POPS
AMG 78 47 82 52 / 0 0 0 0
SSI 73 54 75 62 / 0 0 0 0
JAX 76 51 81 55 / 0 0 0 0
SGJ 75 57 78 60 / 0 0 0 0
GNV 80 49 84 53 / 0 0 0 0
OCF 80 50 84 54 / 0 0 0 0
JAX WATCHES/WARNINGS/ADVISORIES
FL...RED FLAG WARNING UNTIL 8 PM EDT THIS EVENING FOR FLZ021-023-
024-030-031-035-120-132-136-137-140-220-225-232-236-237-
240-322-340-422-425-522.
FIRE WEATHER WATCH FROM TUESDAY MORNING THROUGH TUESDAY
AFTERNOON FOR FLZ023-030-031-132-136-137-140-225-232-236-
237-240-340-425.
HIGH RISK FOR RIP CURRENTS UNTIL 2 AM EDT TUESDAY FOR FLZ124-125-
138-233-333.
GA...RED FLAG WARNING UNTIL 8 PM EDT THIS EVENING FOR GAZ132>136-
149-151>153-162-163-165-250-264-350-364.
HIGH RISK FOR RIP CURRENTS UNTIL 2 AM EDT TUESDAY FOR GAZ154-166.
MARINE...SMALL CRAFT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR AMZ452-
454-470-472.
SMALL CRAFT ADVISORY UNTIL 2 AM EDT TUESDAY FOR AMZ474.
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