426
FXUS64 KAMA 222337 AAA
AFDAMA
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
537 PM CST WED JAN 22 2020
AVIATION
FOR THE 00Z TAFS, VFR CONDITIONS ARE EXPECTED AT KGUY, KDHT, AND
KAMA THROUGH LATE THURSDAY AFTERNOON.
02
PREV DISCUSSION
/ISSUED 245 PM CST WED JAN 22 2020/
SHORT TERM...TONIGHT AND THURSDAY...
AN H5 TROUGH CONTINUES TO DIG SOUTHEAST FROM ALBERTA, CANADA
SOUTH TO SOUTHEAST THROUGH THE GREAT PLAINS INTO THE SOUTHERN
MISSISSIPPI VALLEY, WITH MANY DIFFERENT SPLIT FLOW PERTURBATIONS
AT H5. THIS TROUGH IS PROGGED TO STRENGTHEN AND BECOME NEGATIVELY
TILTED ACROSS THE MISSISSIPPI VALLEY BY TOMORROW NIGHT.
FOR TODAY ZONAL FLOW ALOFT AT H5 WILL BECOME NORTHWESTERLY BETWEEN
NOW AND 00Z. EMBEDDED IN THIS FLOW WILL BE A SMALL PERTURBATION
INTRODUCING THE POSSIBILITIES OF AN ISOLATED SHOWER ACROSS THE WESTERN
AND SOUTHERN TEXAS PANHANDLE MAINLY BEFORE 8 PM. INSTABILITY WILL
BE LIMITED TO THE MID-LEVELS WITH THE QUESTION OF DEWPOINT SPREAD
AT THE SURFACE ALLOWING MEASURABLE PRECIP TO REACH THE GROUND.
WINDS WILL BECOME LIGHT TONIGHT WITH CLEAR SKIES ALLOWING MUCH OF
THE AREA TO DROP BELOW FREEZING ESPECIALLY IN THE NORTHWEST HALF
OF THE FA WHERE DEWPOINTS WILL BE LESS THAN 30. FOR TOMORROW WINDS
WILL STILL BE OUT OF THE NORTH PICKING UP TO 15 TO 20 MPH IN THE
EASTERN FA WILL LOWER SPEEDS IN THE WESTERN FA. DAYTIME HIGHS ARE
LOOKING TO BE IN THE LOW TO MID 50S ACROSS THE AREA.
HOFFEDITZ
LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY...
MILD AND UNEVENTFUL WEATHER EXPECTED THROUGH SUNDAY. DRY
NORTHWEST FLOW ALOFT PREVAILS THURSDAY NIGHT THROUGH FRIDAY NIGHT.
A WEAK SHORTWAVE TROF PASSES ON SATURDAY, FOLLOWED BY ADDITIONAL
NORTHWEST FLOW SATURDAY NIGHT AND SUNDAY. A 500 MB RIDGE PASSES
SUNDAY AFTERNOON AND SUNDAY EVENING. SOUTHWEST FLOW ALOFT
STRENGTHENS ON MONDAY WITH THE APPROACH OF OUR NEXT SHORTWAVE
TROF. THIS TROF PASSES IN THE MONDAY AFTERNOON TO TUESDAY
AFTERNOON TIME FRAME, WITH NORTHWEST FLOW RESUMING TUESDAY NIGHT
AND WEDNESDAY.
AT THE SURFACE, PLEASANT WEATHER EXPECTED FRIDAY THROUGH SUNDAY,
WITH SUNNY DAYS AND LIGHT WINDS. ABOVE-NORMAL TEMPERATURES
EXPECTED DURING THESE DAYS, WITH HIGHS MAINLY IN THE MID- TO
UPPER-50S ON FRIDAY AND SATURDAY, AND MAINLY IN THE LOWER-60S ON
SUNDAY.
AFOREMENTIONED SHORTWAVE TROF INDUCES CYCLOGENESIS AND INCREASING
WINDS ON MONDAY. DOWNSLOPING WINDS OVER MUCH OF THE AREA
EXPECTED TO BOOST TEMPERATURES INTO THE LOWER- TO MID-60S OVER
MOST SECTIONS. STRONGER WINDS EXPECTED ON TUESDAY, FOLLOWING
PASSAGE OF COLD FRONT LATE MONDAY. NORTH WINDS OF 15 TO 25 MPH
CURRENTLY FORECAST FOR TUESDAY, WITH HIGHS SLIGHTLY BELOW NORMAL,
MAINLY IN THE UPPER-40S. LOW CHANCES FOR LIGHT PRECIPITATION ARE
IN THE FORECAST BEGINNING LATE MONDAY NIGHT IN NORTHWEST AND
NORTHEAST SECTIONS. CHANCES SPREAD TO ALL PARTS OF THE TEXAS AND
OKLAHOMA PANHANDLES BY TUESDAY AFTERNOON AND TUESDAY NIGHT.
LIGHT SNOW WILL BE POSSIBLE DURING THE COOLER NIGHT TIME AND
MORNING HOURS.
COCKRELL
AMA WATCHES/WARNINGS/ADVISORIES
TX...NONE.
OK...NONE.
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