188
FXUS64 KMRX 190703
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
303 AM EDT SUN APR 19 2026
..NEW DISCUSSION
KEY MESSAGES
UPDATED AT 301 AM EDT SUN APR 19 2026
- DRIER AND COOLER CONDITIONS ARE EXPECTED TODAY INTO EARLY NEXT
WEEK.
- A WARMING TREND WILL CONTINUE THROUGH MUCH OF THE WEEK WITH RAIN
CHANCES RETURNING FRIDAY INTO SATURDAY.
DISCUSSION
ISSUED AT 301 AM EDT SUN APR 19 2026
CURRENTLY, A TROUGH IS APPROACHING FROM THE WEST WITH A COLD FRONT
MOVING THROUGH THE REGION. WITH THIS COLD FRONT, SHOWERS AND
EMBEDDED STORMS ARE GRADUALLY EXITING TO OUR EAST WITH HIGH PRESSURE
EXPANDING FROM THE SOUTHWEST. THIS WILL INCREASE NORTHERLY TO
NORTHWESTERLY WINDS WITH COOLER TEMPERATURES THIS MORNING AND INTO
THE DAY. SIGNIFICANTLY DRIER CONDITIONS ARE EXPECTED THROUGH THE DAY
WITH RH VALUES DROPPING WELL INTO THE 20S AREA-WIDE. TONIGHT, HIGH
PRESSURE WILL BECOME SET UP ALMOST DIRECTLY OVER THE REGION, LEADING
TO STRONGER SUBSIDENCE, LIGHTER WINDS, AND COOLER TEMPERATURES. SOME
PLACES IN THE NORTHEAST WILL DROP INTO THE 30S WITH PATCHY FROST
POSSIBLE. A SIMILAR PATTERN WILL CONTINUE ON MONDAY, KEEPING
SEASONALLY COOL AND DRY CONDITIONS IN PLACE. STRONGER SUBSIDENCE
WILL ALLOW FOR A FURTHER DROP IN TEMPERATURES MONDAY NIGHT WITH
FROST MORE LIKELY, ESPECIALLY IN NORTHEAST TENNESSEE AND SOUTHWEST
VIRGINIA. BY TUESDAY, A WARMING TREND WILL CONTINUE WITH HEIGHT
RISES AS RIDGING APPROACHES FROM THE WEST. NOTABLY DRY CONDITIONS
WILL REMAIN IN PLACE.
WEDNESDAY AND THURSDAY, RIDGING WILL MOVE INTO THE REGION FROM THE
WEST WITH HIGH PRESSURE KEEPING THE REGION DRY. ANOTHER TROUGH WILL
APPROACH FROM THE WEST LATE IN THE WEEK AND INTO THE WEEKEND. THERE
IS STILL UNCERTAINTY AS TO HOW THIS WILL EVOLVE, BUT RAIN CHANCES
WILL RETURN AT A MINIMUM.
AVIATION
(06Z TAFS)
ISSUED AT 137 AM EDT SUN APR 19 2026
COLD FRONT MOVING THROUGH THE AREA VERY EARLY THIS MORNING. RA HAS
JUST STARTED AT TRI AS PRECIP MOVES NORTH AND EAST. LIGHT TO MOD
RAIN WITH MVFR CIG AND VSBY WILL CONTINUE THE NEXT 3 TO 4 HOURS
OR SO. NO THREAT FOR TS. CONDITIONS FORECAST TO IMPROVE AND DRY
OUT CLOSE TO SUNRISE. N TO NW WINDS FOLLOWING THE FRONTAL PASSAGE
MAY BE GUSTY AT TIMES TODAY AT ALL TERMINALS. HIGH PRESSURE WILL
MOVE IN LATER TODAY, PROMOTING CLEARING SKIES AND CALM WINDS
TONIGHT.
PRELIMINARY POINT TEMPS/POPS
CHATTANOOGA AIRPORT, TN 67 44 75 46 / 0 0 0 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 64 43 68 42 / 0 0 0 0
OAK RIDGE, TN 65 41 69 41 / 0 0 0 0
TRI CITIES AIRPORT, TN 60 38 62 35 / 0 0 0 0
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...NONE.
VA...NONE.
DISCUSSION...BW
AVIATION...KS
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