641
FXUS64 KHUN 180540
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1240 AM CDT WED MAR 18 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 816 PM CDT TUE MAR 17 2026
- A FREEZE WARNING REMAINS IN EFFECT THROUGH 9 AM WEDNESDAY.
- A WARMING TREND WILL BEGIN WEDNESDAY AND CONTINUE THROUGH THIS
WEEKEND.
NEAR TERM
(REST OF TONIGHT AND WEDNESDAY)
ISSUED AT 816 PM CDT TUE MAR 17 2026
DRY CONDITIONS ARE FORECAST TO CONTINUE TONIGHT UNDER THE
INFLUENCE OF SFC HIGH PRESSURE RESIDING OVER THE OHIO RIVER
VALLEY. HOWEVER, A WEAK UPPER LEVEL SHORTWAVE IS FORECAST TO PUSH
NORTH OF THE AREA - BRINGING AN INCREASE IN CLOUD COVER OVERNIGHT
INTO WEDNESDAY MORNING. INCOMING CLOUD COVER WILL LIKELY KEEP
LOW TEMPERATURES A FEW DEGREES WARMER THAN PREVIOUSLY FORECAST,
REMAINING IN THE LOW TO MID 30S. A FREEZE WARNING REMAINS IN
EFFECT FOR ALL OF NORTHERN AL THROUGH 9 AM WEDNESDAY, THE
AFOREMENTIONED SHORTWAVE ALLOWS LOW CHANCES (15% OR LESS) OF
RAINFALL THROUGH PORTIONS OF THE AREA (PRIMARILY NW AL) DURING THE
MORNING TO EARLY AFTERNOON HOURS. CONDITIONS SHOULD IMPROVE
DURING THE LATE AFTERNOON AS CLOUD COVER DEPARTS THE AREA
GRADUALLY FROM WEST TO EAST. HIGH TEMPERATURES ARE FORECAST TO
REACH THE MID TO UPPER 50S.
SHORT TERM
(WEDNESDAY NIGHT THROUGH FRIDAY)
ISSUED AT 816 PM CDT TUE MAR 17 2026
A GRADUAL WARMING TREND IS FORECAST THROUGH THE SHORT TERM PERIOD
AS UPPER LEVEL RIDGING BEGINS TO SHIFT EASTWARD INTO THE AREA.
HIGHS ARE FORECAST TO REACH THE UPPER 60S TO LOWER 70S ON THURSDAY
AND WILL BE COMFORTABLY IN THE MID 70S BY FRIDAY AFTERNOON. THE
ONLY FEATURE TO WATCH IN THE SHORT TERM WILL BE A WEAK FRONTAL
SYSTEM THURSDAY, WHICH WILL LIKELY REMAIN DRY DUE TO LACK OF
FORCING AS WELL AS DRY CONDITIONS.
LONG TERM
(FRIDAY NIGHT THROUGH TUESDAY)
ISSUED AT 816 PM CDT TUE MAR 17 2026
UPPER LEVEL RIDGING AND SUBSEQUENT SFC HIGH PRESSURE CONTINUE TO
INFLUENCE THE REGION THROUGH THE WEEKEND INTO EARLY NEXT WEEK. IN
TURN, DRY CONDITIONS ARE FORECAST TO CONTINUE ALONG WITH ABOVE-
NORMAL TEMPERATURES. HIGH TEMPERATURES THIS WEEKEND WILL LIKELY BE
IN THE UPPER 70S TO LOW 80S (POTENTIALLY REACHING THE MID 80S IN
SOME SPOTS SUNDAY) UNDER SUNNY SKIES. THESE TEMPERATURES ARE
AROUND 15 DEGREES ABOVE NORMAL FOR THIS TIME OF YEAR, HOWEVER, NO
RECORD BREAKING TEMPERATURES ARE EXPECTED. THE HIGH TEMPERATURE
RECORDS FOR MARCH 22ND ARE 88 DEGREES AT HSV AND 89 DEGREES AT
MSL, BOTH SET IN 1907. A COLD FRONT WILL LIKELY FORM AND SHIFT
SOUTHWARD THROUGH THE AREA SUNDAY NIGHT INTO MONDAY MORNING, WHICH
WILL ALLOW RELATIVELY COOLER TEMPERATURES EARLY NEXT WEEK WITH
HIGHS IN THE 60S-70S.
AVIATION
(06Z TAFS)
ISSUED AT 1240 AM CDT WED MAR 18 2026
SURFACE HIGH PRESSURE SITUATED OVER THE APPALACHIANS WILL MOVE
OFF OF THE MID ATLANTIC COAST TODAY. THUS, LIGHT WINDS OVERNIGHT
WILL BECOMING SOUTHERLY TODAY. EXPECT S-SW WINDS OF 5-10KT WITH A
FEW STRONGER GUSTS IN THE AFTERNOON. GREATER MID AND HIGHER
ALTITUDE MOISTURE MOVING IN FROM THE NW WILL PRODUCE MAINLY
BROKEN, TO AT TIMES OVERCAST CONDITIONS FROM HIGHER ALTITUDE
CLOUDS. VFR WEATHER OTHERWISE SHOULD CONTINUE FOR THE TAF.
HUN WATCHES/WARNINGS/ADVISORIES
AL...FREEZE WARNING UNTIL 9 AM CDT THIS MORNING FOR ALZ001>010-016.
TN...NONE.
NEAR TERM...HC
SHORT TERM....HC
LONG TERM....HC
AVIATION...RSB
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