617
FXUS63 KIWX 192256
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
656 PM EDT FRI AUG 19 2022
SYNOPSIS
ISSUED AT 255 PM EDT FRI AUG 19 2022
HIGH PRESSURE WILL GIVE WAY TO A LOW PRESSURE SYSTEM ON SATURDAY
BRINGING INCREASING CHANCES FOR SHOWERS AND PERHAPS A FEW
THUNDERSTORMS AT TIMES THROUGH SUNDAY. HIGH PRESSURE RETURNS
MONDAY BRINGING DRIER CONDITIONS ALONG WITH SEASONAL TEMPERATURES
THROUGH MIDWEEK.
SHORT TERM
(TONIGHT THROUGH SUNDAY)
ISSUED AT 255 PM EDT FRI AUG 19 2022
DEEP UPPER LOW OVER THE UPPER MIDWEST WILL SLOWLY OPEN EWD ACROSS
THE GREAT LAKES THROUGH SUNDAY. GRADUAL INCREASE/DEEPENING IN LOW
LEVEL RETURN MOISTURE PLUME AHEAD OF THIS FEATURE ALONG WITH
INCREASED FORCING ALOFT SHOULD YIELD NUMEROUS SHOWERS/SCT THUNDER BY
LATE AFTN EAST AND LATE EVENING WEST. OTHERWISE DIURNAL
DESTABILIZATION SHOULD ALLOW SHOWERS TO BLOOM UNDER UPPER LOW SUNDAY.
LONG TERM
(MONDAY THROUGH THURSDAY)
ISSUED AT 255 PM EDT FRI AUG 19 2022
UPPER SYS KICKS OUT QUICKLY MONDAY FOLLOWED BY BROAD SFC RIDGING
THROUGH AT LEAST MIDWEEK IF NOT LONGER. THUS A RETURN TO DRY AND
SEASONABLE WX EXPECTED.
AVIATION
(FOR THE 00Z TAFS THROUGH 00Z SATURDAY EVENING)
ISSUED AT 649 PM EDT FRI AUG 19 2022
VFR CONDITIONS EXPECTED THROUGH THE OVERNIGHT HOURS AS AN
APPROACHING STACKED LOW DIVES SE ACROSS THE MIDWEST. THIS LOW
COULD BRING SCATTERED CONVECTION TO THE TERMINALS TOMORROW;
AROUND 12Z FOR KSBN AND AROUND 18Z FOR KFWA. CONFIDENCE IS HIGHER
FOR CONVECTION TO IMPACT KSBN GIVEN PROXIMITY TO THE SURFACE LOW
WHILE CONVECTION MAY DEVELOP OVERHEAD OR JUST EAST OF THE TERMINAL
DURING PEAK HEATING. SHOULD CONVECTION IMPACT THE TERMINAL
DIRECTLY THEN EXPECT LOWERED VISBY AND ERRATIC WINDS.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
SYNOPSIS...T
SHORT TERM...T
LONG TERM...T
AVIATION...CM
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