Area Forecast Discussion
Issued by NWS Portland, ME

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FXUS61 KGYX 232049 AAA
AFDGYX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE GRAY ME
449 PM EDT WED JUL 23 2014

.SYNOPSIS...
A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT AND EXITS
OFFSHORE THURSDAY MORNING. HIGH PRESSURE BUILDS IN FROM THE WEST
FRIDAY AND SATURDAY. WET WEATHER WILL ONCE AGAIN BE POSSIBLE LATE
IN THE WEEKEND AND EARLY NEXT WEEK AS THE NEXT UPPER TROUGH DIVES
IN.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
.UPDATE..
SEVERE THUNDERSTORM WATCH CONTINUES FOR THE ENTIRE AREA THROUGH 10
PM. LINE OF STRONG STORMS ARE NOW MOVING SLOWLY SE THROUGH NH AND
MAINE. AREA OF OUTFLOW NOW MOVING AHEAD OF THE STORMS IN OXFORD
AND CARROLL COUNTIES MAY EVENTUALLY INTERACT WITH THE SEABREEZE IN
ANDROSCOGGIN/ CUMBERLAND COUNTIES. STRONGER/ SEVERE STORMS ARE
LOCATED IN VT AND MAY MOVE INTO NH IN THE NEXT HOUR OR TWO.
ADDITIONAL DEVELOPMENT ALONG A PRE FRONTAL TROUGH IS SUGGESTED BY
THE HRRR MODEL AHEAD OF THE CURRENT LINE OF STORMS. SO FAR THE LACK
OF MOISTURE AT 700MB IS LIKELY THE REASON FOR STORMS NOT REALIZING
THEIR FULL POTENTIAL TODAY...SOMETHING TO BE THANKFUL FOR. SHOULD
BE ABLE TO DROP THE NORTHERN COUNTIES FROM THE WATCH SHORTLY.
ADJUSTED POPS...MAX TEMPERATURE...DEW POINTS...AND WEATHER GRIDS
FOR THIS UPDATE.

&&

PREVIOUS DISCUSSION...
SEVERE THUNDERSTORM WATCH IN EFFECT FOR THE ENTIRE CWA UNTIL 10
PM. THUNDERSTORMS ACROSS FAR NORTHERN ZONES AS WELL AS VT ARE
EXPECTED TO CONTINUE TO DEVELOP AND MOVE FURTHER INTO THE CWA BY
EARLY EVENING. THE MAIN THREAT WILL BE DAMAGING WINDS AND
LOCALIZED FLASH FLOODING. THE CONVECTION SHOULD WEAKEN LATE THIS
EVENING WITH SHOWERS LINGERING FOR THE BALANCE OF THE NIGHT.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/...
LINGERING SHOWERS ACROSS S AND SE ZONES THROUGH MIDDAY THURS OR
SO...THEN SOME CLEARING TAKES PLACE. A FAIR NIGHT IS IN STORE FOR
THURS NIGHT AS HIGH PRESSURE BUILDS IN.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
A SLOW MOVING LOW PRESSURE SYSTEM WILL AFFECT THE AREA LATER IN
THE WEEKEND INTO EARLY NEXT WEEK WITH OCCASIONAL SHOWERS AND
POSSIBLY SOME THUNDERSTORMS.

&&

.AVIATION /21Z WEDNESDAY THROUGH MONDAY/...
SHORT TERM /THROUGH THURSDAY/...IFR OR LOWER IN SHOWERS AND
THUNDERSTORMS THROUGH THIS EVENING...THEN IMPROVING CONDITIONS ARE
FORESEEN. MAINLY VFR THU NIGHT AND FRI.

LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/...IFR CONDITIONS WITH
SCT SHRA/TSTMS LIKELY TO DEVELOP SATURDAY NGT AND SUNDAY.

&&

.MARINE...
SHORT TERM /THROUGH FRIDAY/...SCA FOR TONIGHT FOR THE OCEAN WATERS FOR
MARGINAL 25 KT GUSTS AND SEAS 4-6 FT. QUIETER WINDS AND SEAS THU
THROUGH FRI.

LONG TERM /FRIDAY THROUGH MONDAY/...WINDS AND SEAS BELOW SCA
LEVELS THRU SATURDAY MORNING THEN SOUTHERLY FLOW INCREASES
POSSIBLY PUSHING WINDS AND SEAS TO SCA LEVELS OVER THE OPEN WATERS
LATE SATURDAY THRU SUNDAY.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...NONE.
NH...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 AM EDT THURSDAY FOR ANZ150-152-
     154.

&&

$$

UPDATE...HANES





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