Area Forecast Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS62 KKEY 091455
AFDKEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
955 AM EST TUE FEB 9 2016

.DISCUSSION...
.CURRENTLY... EARLY VISIBLE SATELLITE PICTURES SHOW SKIES ARE MOSTLY
CLOUDY WITH TEMPERATURES IN THE LOWER TO MID 60S ALONG THE ISLAND
CHAIN. MEANWHILE...LOCAL RADARS ARE NOT DETECTING ANY PRECIPITATION
ECHOES...BUT CONSIDERABLE FALSE ECHOES IN THE FORM OF CHAFF ARE
EVIDENT. SURFACE WISE...A TROUGH OF LOW PRESSURE IS DRAPED FROM THE
NORTHWEST BAHAMAS TO ACROSS THE NORTH CENTRAL COAST OF CUBA...WITH
ANOTHER TROUGH ALIGNED ACROSS SOUTH CENTRAL FLORIDA AND THE ADJACENT
ATLANTIC AND GULF WATERS. WINDS ARE MOSTLY NORTHWEST RANGING FROM 15
TO 20 KNOTS WITH OCCASIONAL GUSTS OF 25 KNOTS IN OUR MARINE
DISTRICT. OTHERWISE...OUR MORNING SOUNDING REVEALS LIMITED MOISTURE
(PWAT .84 INCHES) CONFINED BELOW A 1 DEGREES C INVERSION BASED NEAR
850 MB AND ABOVE 500 MB. AN INCREASING UNIDIRECTIONAL WEST TO
SOUTHWEST FLOW REACHES WELL INTO THE TROPOSPHERE.

&&

.SHORT TERM (REST OF TODAY)...
LIMITED MOISTURE WITHIN A DEEP WEST TO NORTHWEST FLOW WILL RESULT IN
CONSIDERABLE CLOUD COVER...BUT WITH NO PRECIPITATION ACROSS OUR
COUNTY WARNING AREA. HOWEVER...WEAK COLD AIR ADVECTION COMBINED WITH
THE CLOUD COVER WILL KEEP HIGH TEMPERATURES NEAR 70 DEGREES. SINCE
THE CURRENT FORECAST COVERS THE SITUATION WELL...NO ADJUSTMENT IS
PLANNED.

&&

.MARINE...A SMALL CRAFT ADVISORY WILL REMAIN IN EFFECT FOR WEST TO
NORTHWEST WINDS NEAR 20 KNOTS BUT WITH SEAS OF 7 TO 10 FEET ON OUR
WESTERN GULF WATERS FROM IN AND AROUND DRY TORTUGAS AND SOUTHWARD
FOR 60 NM...AS WELL AS THE OFFSHORE WATERS BEYOND 40 NM WEST OF THE
MAINLAND MONROE COAST.

&&

.AVIATION... UNTIL 00Z/10TH...VFR CEILINGS NEAR 040 WILL PERSIST
THROUGH MOST OF THE DAY...WITH WEST TO NORTHWEST WINDS OF 10 TO 15
KNOTS WITH GUSTS NEAR 20 KNOTS AT THE KEY WEST AND MARATHON
TERMINALS.

&&

.CLIMATE...IN 1995...THE DAILY RECORD LOW TEMPERATURE OF 48F WAS
RECORDED IN KEY WEST. TEMPERATURE RECORDS HAVE BEEN KEPT SINCE 1872.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GM...SMALL CRAFT ADVISORY FOR GMZ031>035-042>044-052>055-072>075.

&&

$$

PUBLIC/MARINE.........APA
AVIATION/NOWCASTS.....APA
DATA COLLECTION.......EV

VISIT US ON THE WEB AT WEATHER.GOV/KEY

FOLLOW US ON FACEBOOK AND TWITTER AT...
WWW.FACEBOOK.COM/NWSKEYWEST
WWW.TWITTER.COM/NWSKEYWEST


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.