Area Forecast Discussion
Issued by NWS Melbourne, FL

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 KMLB 011340
AFDMLB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
940 AM EDT SUN MAY 1 2016

.DISCUSSION...

HI PRES RIDGE BUILDING OVER THE W ATLC WILL BE THE DOMINANT WX
FEATURE FOR CENTRAL FL...GENERATING A STEADY S/SE FLOW THRU THE H100-
H70 LYR. MORNING RAOBS SHOW A DRY/STABLE AIRMASS OVERHEAD WITH PWAT
VALUES ARND 1.00" OVER THE CENTRAL PENINSULA...INCREASING TO 1.00"-
1.25" OVER S FL. MID LYR ANALYSIS REVEALS A WEAK H85-H50 VORT AXIS
BTWN THE I-4 AND I-10 CORRIDORS THANKS TO A WEAK SHORT WAVE OVER THE
NRN PENINSULA. UPR LVLS ARE EITHER NEUTRAL OR WEAKLY CONVERGENT DUE
TO A ZONAL JET PATTERN OVER THE GOMEX/DEEP SOUTH.

OVERALL TEMP PROFILE IS UNIMPRESSIVE. MID LVL CAPPING IN PLACE WITH
H85-H70 LAPSE RATES ARND 4.0C/KM ALONG THE TREASURE COAST...BTWN 5.0-
5.5C/KM N OF I-4. MID LVL THERMAL TROF ALONG OVER THE NRN PENINSULA
HAS PUSHED H50 TEMPS DOWN TO ARND -10C ALONG AND N OF I-4...
GENERATING H70-H50 LAPSE RATES BTWN 6.0-6.5C/KM. HOWEVER... THESE
ARE ABOUT AS STEEP AS THEY ARE GOING TO GET AS THE AXIS OF AN H50
THERMAL TROF IS EMBEDDED WITHIN A DEEP WRLY FLOW THAT WILL PUSH IT
OFFSHORE BY LATE AFTN.

SIMILAR TO SATURDAY...THE PREVAILING SE LOW/MID LVL FLOW WILL
PROMOTE THE FORMATION OF THE EAST COAST SEA BREEZE BY MIDDAY...BUT
IT WILL BE DIFFUSE AS IT PUSHES INLAND. PROSPECTS FOR ANY MEANINGFUL
MOISTURE ADVECTION ARE SLIM AS THE RAP40 ANALYSIS INDICATED UPSTREAM
H100-H70 MEAN RH VALUES AOB 60PCT...H85-H50 VALUES AOB 30PCT...TOO
DRY TO GENERATE MUCH MORE THAN A SCT-BKN STRATOCU DECK. MOS GUIDANCE
INDICATING SINGLE DIGIT POPS...2KM WRF/HRRR MODELS EQUALLY
PESSIMISTIC ON PRECIP CHANCES.

DIMINISHED CI DECK WILL ALLOW MAX TEMPS TO WARM TO ARND 90F OVER THE
INTERIOR...WHILE ONSHORE FLOW KEEPS TEMPS IN THE M80S ALONG THE
COAST.

&&

.AVIATION...THRU 02/12Z.
SFC WINDS: THRU 02/02Z...E/SE 9-14KTS WITH OCNL SFC G18-22KTS.
BTWN 02/02Z-02/05Z...BCMG S/SE 3-7KTS.

VSBYS/WX/CIGS: PREVAILING VFR ALL SITES...CIGS AOA FL120. BTWN
01/15Z-01/19Z...COASTAL SITES OCNL MVFR CIGS BTWN FL020-030.

&&

.MARINE...
MARGINAL CONDITIONS AS HI PRES RIDGE AXIS OVER THE W ATLC GENERATES
A GENTLE TO MODERATE E/SE BREEZE OVER THE LCL WATERS. SHORT PD WIND
CHOP ARND 3FT WITH DOMINANT PDS BLO 6SEC. SEAS INCREASING TO 4FT
OFFSHORE ARND SUNSET.

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...NONE.

&&

$$

SHORT TERM/AVIATION...BRAGAW
LONG TERM/IMPACT WX...VOLKMER


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