Area Forecast Discussion
Issued by NWS Dallas/Fort Worth, TX

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FXUS64 KFWD 030002 AAA
AFDFWD

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
702 PM CDT SUN AUG 2 2015

.AVIATION...
/00Z TAFS/

NO CONCERNS...VFR.

LIGHT WINDS...GENERALLY UNDER 10KTS...WILL PREVAIL THROUGH THE
FORECAST PERIOD. WHEN SPEEDS FALL TO NEAR 5KTS...THE DIRECTION
TYPICALLY VARIES...BUT THE WINDS WILL BE PRIMARILY FROM THE
SOUTHEAST.

ONCE AGAIN TONIGHT...SOME HIGH-BASED SHOWERS MAY ENTER WESTERN
PORTIONS OF NORTH TEXAS...BUT NO IMPACTS ARE EXPECTED AT ANY TAF
SITES. OCCASIONAL MID/HIGH CLOUDS WILL PASS THROUGH IN W/NW FLOW.

25

&&

.AVIATION CLIMATE...
ON THIS DATE /AUGUST 2ND 1985/...30 YEARS AGO...DELTA AIR LINES
FLIGHT 191 CRASHED AT DALLAS/FORT WORTH INTERNATIONAL AIRPORT
AROUND 605 PM CDT AS A RESULT OF WIND SHEAR ASSOCIATED WITH A
MICROBURST. AT THE TIME OF THE INCIDENT...LITTLE WAS KNOWN ABOUT
MICROBURSTS. THE CRASH OF DELTA FLIGHT 191 WAS THE THIRD EVENT
BETWEEN 1975 AND 1985 IN WHICH AT LEAST 100 PEOPLE WERE KILLED IN
AN AIRCRAFT ACCIDENT INVOLVING A MICROBURST.

FOR MORE INFORMATION ABOUT THIS INCIDENT...INCLUDING THE
METEOROLOGICAL CONDITIONS DURING IT AND THE TECHNOLOGICAL
ADVANCES SINCE THEN...VISIT OUR WEBPAGE AT...

WEATHER.GOV/FORTWORTH/?N=DELTA191

&&

.PREV DISCUSSION... /ISSUED 334 PM CDT SUN AUG 2 2015/
AN AXIS OF MID LEVEL MOISTURE PERSISTS ACROSS NORTHWEST TEXAS
AND WE ARE EXPECTING ISOLATED SHOWERS TO DEVELOP AGAIN JUST
NORTHWEST OF THE CWA OVERNIGHT. IT IS POSSIBLE A FEW OF THESE
SHOWERS MAY MOVE INTO FAR NW PORTIONS OF THE CWA AND WE WILL SHOW
A MENTION OF SUCH ACTIVITY IN THE FORECAST THROUGH MONDAY MORNING.
THE LOW LEVELS REMAIN VERY DRY...AND THUS VERY LITTLE IF ANY
MEASURABLE RAIN IS EXPECTED. FOR THE REMAINDER OF THE AREA
ANOTHER TRANQUIL NIGHT IS FORECAST. DEWPOINTS WILL BE IN THE 50S
THIS EVENING WHICH SHOULD MAKE FOR SOMEWHAT PLEASANT CONDITIONS
FOR EARLY AUGUST. SURFACE MOISTURE WILL BE ON THE INCREASE LATER
TONIGHT AND INTO MONDAY AS WINDS BECOME MORE SOUTHERLY IN THE
LOWER LEVELS. SO UNFORTUNATELY THE HUMIDITY WILL BE RETURNING TO
MORE NORMAL LEVELS DURING THE NEXT COUPLE OF DAYS.

AN UPPER LEVEL HIGH WILL INTENSIFY OVER ARIZONA AND NEW MEXICO
THIS WEEK...BUT NORTH CENTRAL TEXAS WILL REMAIN ON ITS EASTERN
FRINGE. THIS MEANS UPPER LEVEL SUBSIDENCE WILL NOT BE TOO
PROMINENT...AND ONCE LOW LEVEL MOISTURE RECOVERS ENOUGH THE
AIRMASS WILL ACTUALLY BE UNSTABLE DURING THE AFTERNOON HOURS WITH
LITTLE TO NO CIN. WITH NORTHWEST FLOW ALOFT PREVAILING OVER THE
CWA THROUGH THE WEEK...IT IS CERTAINLY A PATTERN THAT COULD MAKE
THE WEATHER GO FROM DRY TO - SURPRISE IT IS RAINING. AT THIS
POINT THE INGREDIENTS REQUIRED TO PRODUCE CONVECTION DO NOT APPEAR
TO COME IN PHASE WITH ONE ANOTHER...BUT AGAIN THIS IS NOT A
PATTERN WHERE DRY WEATHER IS A CERTAINTY.

ON MONDAY NIGHT A STRONG SHORTWAVE TROUGH WILL KICK OFF STORMS IN
THE HIGH PLAINS. FAVORABLE STEERING FLOW ALOFT EXISTS FOR A MCS TO
FORM AND TRACK INTO THE AREA...BUT LOW LEVEL MOISTURE/INSTABILITY
JUST LOOK TOO LIMITED FOR ANY COMPLEX TO MAKE IT THIS FAR SOUTH
AND AFFECT THE AREA TUESDAY MORNING. MOISTURE AND INSTABILITY
INCREASE DRAMATICALLY BY WEDNESDAY AFTERNOON...BUT BY THIS TIME
THERE IS A LACK OF FORCING AS THE PRIMARY SHORTWAVE TROUGH MOVES
EAST INTO THE MISSISSIPPI RIVER VALLEY. HAVE INSERTED A SLIGHT
CHANCE OF AFTERNOON/EVENING STORMS IN THE FORECAST WEDNESDAY OVER
THE NORTHEAST ZONES WHERE THE TAIL END OF THE FORCING MAY INTERACT
WITH THE UNSTABLE/UNCAPPED AIRMASS. OTHERWISE HAVE SHOWN POPS OF
10 PERCENT TUESDAY AND THURSDAY NORTH OF I-20 BUT KEPT THE WORDED
FORECAST DRY. THE RAIN CHANCES INCREASE A LITTLE BY FRIDAY EVENING
AND INTO SATURDAY WHEN A WEAK COLD FRONT SHOULD DROP INTO THE RED
RIVER VALLEY AND STALL. WILL SHOW JUST SLIGHT CHANCES OF SHOWERS
AND STORMS OVER THE NORTHERN AND NORTHEASTERN ZONES.

AGAIN THE MAJORITY OF THE REGION NEXT WEEK SHOULD CONTEND WITH
JUST HOT AND DRY WEATHER. TEMPERATURES WILL GRADUALLY INCH UP INTO
THE 98 TO 103 DEGREE RANGE OVER THE ENTIRE AREA BY LATE IN THE
WORK WEEK. IT APPEARS THAT HEAT ADVISORY CRITERIA MAY OCCUR OVER
PORTIONS OF THE CWA BY MID-LATE WEEK. BY NEXT SUNDAY...THE UPPER
HIGH SHOULD BECOME CENTERED OVER TEXAS WHICH WILL PROMOTE HOT AND
DRY WEATHER WELL INTO MID AUGUST.

TR.92

&&



.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  78  99  79  99  80 /   0   0   0   5   5
WACO, TX              73  99  76  99  77 /   0   0   0   5   5
PARIS, TX             71  98  74  98  76 /   0   0   0  10  10
DENTON, TX            73  98  75  99  78 /   5   5   5  10  10
MCKINNEY, TX          72  99  75  98  77 /   0   0   0  10  10
DALLAS, TX            79 100  80 100  82 /   0   0   0   5   5
TERRELL, TX           73  99  75  98  77 /   0   0   0   5   5
CORSICANA, TX         74 100  76  99  77 /   0   0   0   5   5
TEMPLE, TX            72 100  74  99  75 /   0   0   0   5   5
MINERAL WELLS, TX     72  98  73  99  76 /  10  10   5   5   5

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

$$

25/15


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