DAY ONE...TODAY AND TONIGHT...
...MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING
WITH DAMAGING WINDS THE MAIN THREAT...
.THUNDERSTORM IMPACT...
A SERIES OF SQUALL LINES AHEAD OF A STRONG COLD FRONT WILL PUSH
ACROSS THE FORECAST THIS AFTERNOON AND EVENING. SCATTERED STRONG
TO SEVERE THUNDERSTORMS WITH DAMAGING WINDS OVER 60 MPH WILL BE
THE MAIN THREAT. ISOLATED TORNADOES AND LARGE HAIL WILL ALSO BE
POSSIBLE.
.FLOOD IMPACT...
WHILE HEAVY RAINFALL IS ALWAYS A THREAT WITH STRONG TO SEVERE
THUNDERSTORMS. STORM MOTION WILL BE FAST ENOUGH TO PREVENT A
PROLONGED RAINFALL EVENT. AVERAGE RAINFALL AMOUNTS SHOULD BE
AROUND A HALF AN INCH WITH ISOLATED TOTALS OF ONE TO TWO INCHES
POSSIBLE WITH THE STRONGEST STORMS.
.MARINE THUNDERSTORM GUST IMPACT...
A SQUALL LINE WITH STRONG TO SEVERE THUNDERSTORMS WILL PUSH ACROSS
THE COASTAL WATERS WITH GUSTS OVER 35 KNOTS THIS EVENING...THE
FRONT SHOULD PUSH EAST OF THE WATERS BY EARLY SATURDAY MORNING.
.WIND AND SEA IMPACT...
SMALL CRAFT ADVISORIES ARE IN EFFECT IN ADVANCE OF THE COLD FRONT
AS SOUTH TO SOUTHWEST WINDS INCREASE TO MORE THAN 20 KNOTS LATER
TODAY. GALE WARNINGS HAVE BEEN POSTED FOR THE OFFSHORE WATERS AS
FREQUENT GUSTS TO GALE FORCE WILL BE POSSIBLE IN THE COLD AIR IN
THE WAKE OF THE FRONT EARLY SATURDAY MORNING.
.RIVER FLOOD IMPACT...
THE SATILLA RIVER AT ATKINSON HAS CRESTED BUT MINOR FLOODING WILL
CONTINUE FOR THE NEXT SEVERAL DAYS. REFER TO THE LATEST FLOOD
STATEMENT FOR MORE DETAILS.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...
...VERY WINDY CONDITIONS EXPECTED SATURDAY...
SATURDAY...STRONG WEST TO NORTHWEST WINDS WILL GUST OVER 40 MPH AT
TIMES. SUSTAINED WINDS WILL RANGE FROM 20 TO 30 MPH. A WIND ADVISORY
MAY BE REQUIRED OVER THE ENTIRE FORECAST AREA. GALE WARNINGS WILL
LIKELY CONTINUE OVER THE COASTAL WATERS AS FREQUENT GUSTS TO 40
KNOTS CONTINUE THROUGH SATURDAY NIGHT.
SATURDAY NIGHT...BRISK NORTHWEST WINDS OF 10 TO 20 MPH IN COMBINATION
WITH TEMPERATURES FALLING INTO THE 30S WILL PUSH WIND CHILL INDICES
INTO THE 20S AFTER MIDNIGHT. WIND CHILL VALUES WILL BOTTOM OUT IN
THE LOWER TO MID 20S IN SOME LOCATIONS BY EARLY SUNDAY MORNING. A
WIND CHILL ADVISORY MAY BE REQUIRED FOR NORTHEAST FLORIDA. MINIMUM
TEMPERATURES ARE EXPECTED TO BOTTOM OUT AROUND 30 DEGREES IN MANY
INLAND LOCATIONS...BUT IT IS TOO EARLY TO DETERMINE DURATIONS OF
SUB-FREEZING TEMPERATURES AT THIS TIME.
SUNDAY...VERY DRY AIR IN PLACE WILL MAKE FOR DANGEROUS FIRE
CONDITIONS SUNDAY AFTERNOON.
SUNDAY NIGHT...BRIEF DURATIONS OF SUB-FREEZING TEMPERATURES WILL BE
POSSIBLE BY EARLY MONDAY MORNING ACROSS INLAND AREAS. LIGHT WINDS
WILL ALSO PROMOTE SOME PATCHY FROST FORMATION.
TUESDAY NIGHT AND WEDNESDAY...ISOLATED STRONG THUNDERSTORMS WILL
BE POSSIBLE WITH A COLD FRONTAL PASSAGE.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUESTED THIS AFTERNOON.
FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE WEBSITE ON THE INTERNET AT
http://WWW.SRH.NOAA.GOV/JAX.
$$
HESS/ZIBURA
