National Weather Service National Headquarters

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS62 KKEY 250225
AFDKEY

AREA FORECAST DISCUSSION FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
1025 PM EDT FRI MAY 24 2013

.DISCUSSION...
DURING THE LATE AFTERNOON AND EARLY EVENING...SCATTERED SHOWERS AND
THUNDERSTORMS...SEVERAL OF WHICH WERE STRONG MIGRATED SOUTHWARD OFF
THE SOUTH FLORIDA MAINLAND AND PUSHED THROUGH MOST OF FLORIDA
BAY...THE EASTERN PORTION OF THE MIDDLE KEYS...A GOOD PORTION
OF THE UPPER KEYS AND THE ADJACENT NEARSHORE ATLANTIC WATERS.
CURRENTLY...SKIES ARE MOSTLY CLEAR WITH TEMPERATURES IN THE UPPER
70S TO NEAR 80 DEGREES ALONG THE ISLAND CHAIN. LOCAL RADARS ARE ONLY
DETECTING A FEW MEAGER BOUNDARIES LINGERING IN OUR AREA. SURFACE
WISE...AN EXTREMELY LENGTHY RIDGE OF HIGH PRESSURE EXTENDS FROM THE
UPPER GREAT LAKES SOUTHWARD INTO THE SOUTHEAST UNITED STATES...AND
DOWN INTO THE EASTERN GULF OF MEXICO. ALSO...A TROUGH OF LOW
PRESSURE OFFSHORE OF THE EASTERN SEABOARD REACHES ACROSS NORTH
CENTRAL FLORIDA. ACROSS OUR MARINE DISTRICT...NORTH WINDS HAVE
ABATED APPRECIABLY...RANGING BETWEEN 5 AND 10 KNOTS. OTHERWISE...OUR
EVENING SOUNDING REVEALS AN EXTREMELY DRY AIRMASS (PWAT 1.06 INCHES)
BUT WITH LITTLE IN THE WAY OF CONVECTIVE INHIBITION ABOVE 900 MB. A
LIGHT NORTHERLY FLOW REACHES UP TO 650 MB...BEFORE TURNING NORTHWEST
AND INTENSIFYING ABOVE.

.SHORT TERM (REST OF TONIGHT)...
OUTSIDE OF A FEW SHOWERS ALONG LEFTOVER LINGERING
BOUNDARIES...CONSIDERABLE DRY AIR WILL LIMIT SHOWER COVERAGE.
HENCE...HAVE UPDATED THE PUBLIC FORECAST TO RETURN RAIN CHANCES BACK
TO A GENEROUS 10 PERCENT FOR THE ENTIRE ISLAND CHAIN. ALTHOUGH WINDS
WILL BE RELATIVELY LIGHT...DO NOT EXPECT WIDESPREAD FAVORABLE
RADIATIONAL COOLING CONDITIONS LIKE LAST NIGHT. THEREFORE...HAVE
OPENED UP A RANGE OF 75 TO 80 UNDER MOSTLY CLEAR SKIES.

&&

.MARINE...
WITH WINDS SLACKENING QUICKLY FROM EARLIER DEEP CONVECTION...EXPECT
WINDS TO SLOWLY TURN NORTHEAST TO EAST AT LESS THAN 10 KNOTS ACROSS
THE ENTIRE MARINE DISTRICT.

&&

.AVIATION...
VFR CONDITIONS WILL PREVAIL AT BOTH THE KEY WEST AND MARATHON ISLAND
TERMINALS. WINDS WILL AVERAGE BETWEEN 5 AND 10 KNOTS FROM 360
DEGREES...BECOMING 070 DEGREES BY 12Z NEAR 10 KNOTS...THEN GRADUALLY
INCREASING TO BETWEEN 12 AND 14 KNOTS WITH GUSTS AROUND 20 KNOTS
AFTER 18Z. EXPECT A FEW TO SCATTERED CUMULUS CLOUDS WITH BASES AOA
FL020-025 AGL.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GM...NONE.

&&

$$

PUBLIC/MARINE/FIRE/DIGITAL...APA
AVIATION/NOWCASTS............DAF
DATA ACQUISITION.............BWC

VISIT US ON THE WEB AT WWW.WEATHER.GOV/KEYWEST