National Weather Service Raw Text Product

732 
FXUS64 KTSA 260821
AFDTSA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
321 AM CDT WED JUN 26 2013

.DISCUSSION...
EXCESSIVE HEAT WILL BE THE MAIN CONCERN OVER THE NEXT COUPLE OF DAYS 
BEFORE A PATTERN CHANGE RETURNS THE REGION TO A PERIOD OF SLIGHTLY 
BELOW SEASONAL AVERAGE TEMPERATURES.

A STRONG UPPER RIDGE BUILDING ACROSS THE SOUTHERN PLAINS SHOWS NO 
SIGNS OF RELENTING. TEMPERATURES WILL CONTINUE WELL ABOVE SEASONAL 
AVERAGES THROUGH FRIDAY... BOTH DURING THE DAY AND OVERNIGHT. 
TEMPERATURES SHOULD TOP THE CENTURY MARK IN A FEW LOCATIONS THURSDAY 
AFTERNOON. LOW LEVEL MOISTURE IS EXPECTED TO REMAIN ESPECIALLY HIGH 
DURING THIS TIME PERIOD AS WELL... WHICH WILL PRODUCE AFTERNOON HEAT 
INDICES BETWEEN 105 AND 110 ACROSS MUCH OF THE CWA. IN ADDITION... A 
LARGE PORTION OF THE AREA WILL NOT COOL BELOW 75 DEGREES OVERNIGHT.
 
DEWPOINTS WILL BE THE CONTROLLING FACTOR THROUGH FRIDAY. THE CURRENT 
FORECAST IS FOR DEWPOINTS TO REMAIN ABOVE 70 DEGREES DURING THE 
AFTERNOON BOTH TODAY AND THURSDAY. IF THIS VERIFIES... IT WILL 
CREATE DANGEROUS HEAT CONDITIONS. THIS PROLONGED PERIOD OF EXCESSIVE 
HEAT WITH LITTLE COOLING RELIEF DURING THE OVERNIGHT HOURS WILL MEET 
CRITERIA FOR AN EXCESSIVE HEAT WARNING... SO WILL GO AHEAD WITH THAT 
FOR THIS MORNINGS FORECAST PACKAGE. IN FACT... SINCE MINIMUMS THIS 
MORNING WILL REMAIN ABOVE 75 DEGREES FOR MUCH OF THE AREA... WILL 
HAVE THIS IN EFFECT FROM THIS MORNING AND EXTEND IT THROUGH
FRIDAY AFTERNOON.

AN UNSEASONABLY STRONG UPPER TROUGH AND ASSOCIATED COLD FRONT IS 
EXPECTED TO PROVIDE SOME RELIEF FROM THE HEAT BEGINNING FRIDAY. THE 
RELIEF WILL NOT BE IMMEDIATE... BUT AS DRIER POST-FRONTAL AIR 
FILTERS INTO THE REGION CONDITIONS WILL SLOWLY IMPROVE. BY THE EARLY 
PART OF NEXT WEEK... HIGHS ONLY IN THE 80S WITH OVERNIGHT LOWS IN 
THE 60S WILL BE COMMON ACROSS MOST OF THE CWA. 

UNFORTUNATELY... PRECIPITATION CHANCES WITH THE APPROACHING SYSTEM 
APPEAR TO BE MINIMAL. HAVE CURRENTLY ONLY BEEN ABLE TO JUSTIFY A 
SLIGHT CHANCE ACROSS THE NORTHEASTERN THIRD OF THE FORECAST AREA FOR 
THURSDAY NIGHT INTO FRIDAY MORNING WITH FRONTAL PASSAGE. ANOTHER...
PERHAPS BETTER CHANCE FOR PRECIPITATION WILL BE OVERNIGHT SATURDAY
NIGHT INTO EARLY SUNDAY MORNING.



&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   97  77 100  78 /  10   0   0  20 
FSM   97  75 100  78 /  10   0   0  10 
MLC   96  76  99  77 /   0   0   0  10 
BVO   98  74 101  75 /  10  10   0  20 
FYV   94  72  96  73 /  10  10   0  20 
BYV   95  73  95  73 /  10  10   0  20 
MKO   96  75  99  76 /  10   0   0  10 
MIO   97  75  99  76 /  10  10  10  20 
F10   95  76  99  77 /  10   0   0  10 
HHW   96  76  98  76 /   0   0  10  10 

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...EXCESSIVE HEAT WARNING UNTIL 7 PM FRIDAY FOR OKZ054-OKZ055-
     OKZ056-OKZ057-OKZ058-OKZ059-OKZ060-OKZ061-OKZ062-OKZ063-
     OKZ064-OKZ065-OKZ066-OKZ067-OKZ068-OKZ069-OKZ070-OKZ071-
     OKZ072-OKZ073-OKZ074-OKZ075-OKZ076.

AR...EXCESSIVE HEAT WARNING UNTIL 7 PM FRIDAY FOR ARZ019-ARZ020-
     ARZ029.

&&

$$

SHORT TERM...69
LONG TERM....06