Area Forecast Discussion
Issued by NWS Huntsville, AL

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000
FXUS64 KHUN 052332 AAA
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
632 PM CDT SUN JUL 5 2015

.UPDATE...
FOR 00Z TAFS

&&

.DISCUSSION...
/ISSUED 343 PM CDT SUN JUL 5 2015/
A BLOCKY UPPER LEVEL PATTERN CONTINUED ACROSS THE GREATER NORTH
AMERICAN DOMAIN...AS REX-STYLE BLOCKING REMAINED SITUATED OFF OF
THE WEST COAST. THE BLOCK AND A FURTHER SOUTHWARD SURGE OF THE
NORTHERN STREAM ACROSS THE NORTHERN CONUS HAS HELPED TO WEAKEN
RIDGING THAT WAS OVER THE DESERT SW...AND TROUGH ACROSS THE
EASTERN CONUS. DESPITE A GENERALLY WEAKER TROUGH...AN UPPER LOW
WAS PRESENT ACROSS THE OHIO VALLEY/WESTERN APPALACHIANS. COLDER
TEMPS ALOFT ASSOCIATED WITH THIS LOW...PASSING UPPER LEVEL
SUPPORT...AND AN UNSTABLE/MOIST ATMOSPHERE PRESENT OVER THE EASTERN
STATES...HAS BROUGHT MORE SHOWER/T-STORM DEVELOPMENT. THE BEST
UPPER SUPPORT TODAY HAS STAYED TO OUR NORTH AND SOUTH...EVIDENT
WITH MORE ACTIVE STORMS OVER THOSE REGIONS THUS FAR. MOSTLY CLOUDY
SKIES OTHERWISE PREVAILED OVER/NEAR THE FORECAST AREA...WITH HIGHS
SO FAR WARMING INTO THE LOW/MID 80S.

THE UPPER LOW OVER EASTERN KENTUCKY SHOULD GRADUALLY WEAKEN AND
MOVE TO THE NE...AS UPPER RIDGING BECOMES ESTABLISHED OVER THE SE
STATES TOWARDS THE MIDDLE OF THIS WEEK. THE LOW EXITING TO THE NE
WILL RESULT IN LESSER CHANCES OF RAIN FOR THE TENNESSEE VALLEY FOR
THE UPCOMING WEEK. RAIN CHANCES WILL OCCUR MAINLY DURING THE
DAYTIME...PRIMARILY FROM DAYTIME HEATING AND RESIDUAL MOISTURE
FROM THE RECENT HEAVY RAINFALL.

FOR TONIGHT...KEPT LOWER END CHANCE (30 PERCENT) IN FOR TONIGHT AND
MONDAY. A LITTLE MORE SUN APPEARING AND THE DEPARTURE OF THE UPPER
LOW SHOULD HELP HIGH TEMPERATURES RISE A TAD MORE THAN TODAY...INTO
THE MID/UPPER 80 FOR MON/TUE. LOWERED RAIN CHANCES TO ISOLATED FOR
MONDAY NIGHT TO WED. THE REST OF THE WORK WEEK SHOULD EXPERIENCE
ONLY ISOLATED SHOWER/THUNDERSTORM CHANCES FOR THE DAYTIME...AND
SILENT 14 POPS FOR THE NIGHTS. DAILY HIGH/LOW TEMPERATURES SHOULD
REMAIN NEAR TO A TAD ABOVE SEASONABLE NORMS FOR THE MID AND LATTER
WEEK. RESIDUAL MOISTURE SHOULD PUSH HEAT INDICES INTO THE UPPER 90S
TO AROUND 100 FOR THE LATTER HALF OF THIS WEEK. WITH MORE UPPER
RIDGING OVER THE REGION...HAVE REMOVED RAIN CHANCES FOR THE SECOND
HALF OF THE WEEKEND.

RSB

&&

.AVIATION...
FOR 00Z TAFS...

VFR CONDITIONS SHOULD PREVAIL THROUGH 08Z WHEN FOG FORMATION AND LOW
CIGS BEGINS TO AFFECT ALL OF N AL/S MIDDLE TN. ISOLATED
THUNDERSTORMS THAT HAVE BEEN FORMING OVER TN SHOULD DISSIPATE BUT MAY
NEED TO AMEND KHSV IF ANY STORMS DO FORM BEFORE 02Z. AFTER 08Z, MVFR
CONDITIONS SHOULD PREVAIL ESPECIALLY AT KMSL. IFR AND LIFR CONDITIONS
COULD OCCUR BTWN 09Z-12Z DEPENDING ON WHETHER THE LOW CIGS ARE ENOUGH
TO HINDER LOWER VIS. VFR CONDITIONS SHOULD THEN RETURN BY 14Z.

SL.77

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

$$

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE
AT WEATHER.GOV/HUNTSVILLE.



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