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 291849
AFDKEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
249 PM EDT MON JUN 29 2015

.DISCUSSION...
.CURRENTLY...
MOSTLY SUNNY SKIES WITH SOME HAZE DUE TO THE SAHARAN AIR
LAYER...(SAL) MOVING WESTWARD THROUGH THE AREA. THE ISLAND CLOUD
LINE HAS FORMED BUT THE VERTICAL EXTENT HAS BEEN LIMITED BY THE SAL
AND THE DRY AIR ALOFT. HIGH HUMIDITY WITH DEW POINTS IN THE MIDDLE
TO UPPER 70S...AND NEAR 90 DEGREES MAKE FOR A HEAT INDEX AROUND 100
DEGREES.

.FORECAST...
NO CHANGES TO THIS FORECAST CYCLE...THE ATLANTIC RIDGE REMAINS IN
CONTROL OF THE LOCAL ENVIRONMENT...WITH LIGHT AND VARIABLE WINDS
OVERNIGHT. THE ATLANTIC RIDGE FINALLY BEGINS TO SLIDE NORTHWARD
TUESDAY AND WINDS WILL TURN MORE EAST TO SOUTHEAST WHILE INCREASING
EVER SO SLIGHTLY. THE SAL WILL CONTINUE PAST THE KEYS AREA BY
WEDNESDAY WITH A GRADUAL INCREASE IN LOW LEVEL MOISTURE WITH THE LONG
FETCH OF THE EASTERLY BREEZES OVER THE GULF STREAM. WILL KEEP SLIGHT
CHANCE OF SHOWERS IN THE FORECAST THROUGH FRIDAY. THE INCREASE IN
MOISTURE ALONG WITH SPEED CONVERGENCE IN LOW LEVEL WINDS WILL LIKELY
INDUCE AT LEAST A LOW END CHANCE FRIDAY NIGHT THROUGH SUNDAY MORNING.

&&

.MARINE...
THE DEEP LAYER HIGH PRESSURE OVER THE KEYS IS RESPONSIBLE FOR LIGHT
AND VARIABLE WINDS TODAY...WITH THESE CONDITIONS EXTENDING THROUGH
TUESDAY. THE RIDGE WILL MOVE NORTHWARD LATE TUESDAY THROUGH
WEDNESDAY. WINDS WILL FRESHEN WEDNESDAY WITH POTENTIALLY SOME BRIEF
SURGES TO NEAR CAUTIONARY CRITERIA THROUGH THURSDAY.

&&

.AVIATION...
VFR CONDITIONS ARE EXPECTED AT THE KEY WEST AND MARATHON TERMINALS
THIS EVENING INTO TUESDAY MORNING. SURFACE WINDS WILL BE LIGHT AND
VARIABLE.

&&

.CLIMATE...
ON THIS DATE IN KEYS WEATHER HISTORY...IN 1986...1.14 INCHES OF RAIN
WAS RECORDED IN KEY WEST. THIS SET THE DAILY RAINFALL RECORD FOR JUNE
29 IN KEY WEST. RAINFALL RECORDS FOR KEY WEST DATE BACK TO 1871.

&&

.PRELIMINARY POINT TEMPS/POPS...
KEY WEST  80  89  81  89 / 10 20 20 20
MARATHON  80  92  81  91 / 10 20 20 20

&&

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

$$

PUBLIC/MARINE.........BWC
AVIATION/NOWCASTS.....04
DATA COLLECTION.......CHESSER

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.