490
FXUS64 KJAN 171809
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
1209 PM CST SAT JAN 17 2026
..NEW DISCUSSION
KEY MESSAGES
- SEVERAL NIGHTS IN THE UPCOMING WEEK WILL SEE WIDESPREAD
TEMPERATURES BELOW FREEZING.
- CHANCES FOR LIGHT RAIN WILL RETURN TO THE FORECAST AREA ON
WEDNESDAY.
DISCUSSION
ISSUED AT 1207 PM CST SAT JAN 17 2026
A LONGWAVE TROUGH OCCUPIES AND WILL CONTINUE TO DOMINATE THE
SYNOPTIC WEATHER PATTERN ACROSS VIRTUALLY ALL OF THE CONUS THROUGH
THE END OF THIS WEEK. A SEQUENCE OF SHORTWAVE TROUGHS WILL STEER
REINFORCING ROUNDS OF COLDER SURFACE AIR SOUTH AND EAST INTO THE
CENTRAL CONUS AND GULF COAST. SEVERAL NIGHTS WILL SEE WIDESPREAD
TEMPERATURES BELOW FREEZING, AND THE COLDEST NIGHT MIGHT BE MONDAY
NIGHT AS A BROAD 1030+ MB SURFACE HIGH OVERSPREADS OUR REGION. MOIST
RETURN FLOW WILL WARM THINGS A LITTLE ON THE BACK SIDE OF THIS HIGH,
BUT SURFACE BASED INSTABILITY WILL STILL BE HELD TO THE SOUTH. LIGHT
RAIN FROM UPPER-LEVEL FORCING AND ASCENT IS POSSIBLE WEDNESDAY INTO
THURSDAY BEFORE THE TROUGH AXIS MOVES EAST AND FLOW ACROSS THE CONUS
BECOMES MORE ZONAL HEADING INTO THE WEEKEND. THE SHIFT IN PATTERN
WILL ALLOW FOR SOME ADDITIONAL RAIN CHANCES NEXT WEEKEND, THOUGH
DETAILS IN THE PATTERN AT THAT TIME FRAME ARE UNCERTAIN. /NF/
AVIATION
(18Z TAFS)
ISSUED AT 1125 AM CST SAT JAN 17 2026
VFR CONDITIONS WITH NORTHWEST WINDS OF 10-15 KTS WITH HIGHER
GUSTS WILL PREVAIL THROUGH THE PERIOD./KP/
PRELIMINARY POINT TEMPS/POPS
JACKSON 24 44 28 51 / 0 0 0 0
MERIDIAN 24 44 26 52 / 0 0 0 0
VICKSBURG 24 44 28 51 / 0 0 0 0
HATTIESBURG 28 49 28 58 / 20 0 0 0
NATCHEZ 25 47 30 55 / 0 0 0 0
GREENVILLE 23 42 27 44 / 0 0 0 0
GREENWOOD 20 41 26 46 / 0 0 0 0
JAN WATCHES/WARNINGS/ADVISORIES
MS...NONE.
LA...NONE.
AR...NONE.
NF/KP
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