157
FXUS63 KIWX 171711
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
111 PM EDT TUE SEP 17 2019
SYNOPSIS
ISSUED AT 112 PM EDT TUE SEP 17 2019
LOW CLOUDS LINGER THIS AFTERNOON ACROSS NORTHEAST INDIANA AND
SOUTHERN MICHIGAN. HIGH PRESSURE ACROSS THE AREA WILL KEEP WINDS
FROM THE NORTHEAST. THE COOLER NORTHEAST FLOW WILL KEEP
TEMPERATURES A LITTLE COOLER TODAY THAN YESTERDAY WITH HIGHS
AROUND 80. WARM AND DRY CONDITIONS ARE AHEAD THE REST OF THE WEEK
WITH HIGHS IN THE 80S EACH DAY.
SHORT TERM
(TODAY AND TONIGHT)
ISSUED AT 419 AM EDT TUE SEP 17 2019
LOW LEVEL POST FRONTAL MOISTURE HAS ALLOWED FOG TO DEVELOP AND
EXPAND OVER LOWER MICHIGAN INTO NORTHWEST INDIANA EARLY THIS
MORNING AS A HIGH PRESSURE AREA TO THE NORTH KEEPS A NORTHEAST
FLOW OVER THE FORECAST AREA. THE FOG WILL MIX OUT THIS MORNING.
THE COOLER NORTHEAST FLOW SHOULD ALLOW TEMPERATURES TO BE A
LITTLE COOLER TODAY THAN YESTERDAY WITH HIGHS ONLY AROUND 80.
LONG TERM
(WEDNESDAY THROUGH MONDAY)
ISSUED AT 419 AM EDT TUE SEP 17 2019
TEMPERATURES WILL REMAIN MUCH ABOVE NORMAL THROUGH SATURDAY
AS AN UPPER LEVEL RIDGE BUILDS NORTHEAST IN RESPONSE TO AN
AMPLIFYING TROF OVER WESTERN NORTH AMERICA. TEMPERATURES WILL BE
10 TO POSSIBLY 15 DEGREES ABOVE NORMAL ESPECIALLY THURSDAY THROUGH
SATURDAY WITH HIGHS WELL INTO THE 80S AND PERHAPS A FEW 90S.
DIURNAL TEMPERATURE SPREADS ARE LIKELY TO TOP 25 DEGREES AT TIMES
AS DRYING ACCENTUATES THE DEVELOPING DROUGHT SITUATION OVER
SECTIONS OF THE AREA. CHANCES FOR SHOWERS AND STORMS INCREASE THIS
WEEKEND AS AN UPPER LEVEL SYSTEM EJECTS EAST. THE BEST CHANCES
FOR RAIN EXTEND FROM SATURDAY NIGHT THROUGH SUNDAY NIGHT AS A
LARGE UPPER LEVEL SYSTEM EJECTS NORTHEAST OUT OF THE LARGE UPPER
LEVEL TROF OVER WESTERN NORTH AMERICA.
AVIATION
(FOR THE 18Z TAFS THROUGH 18Z WEDNESDAY MORNING)
ISSUED AT 112 PM EDT TUE SEP 17 2019
LOW CLOUDS HAVE BEEN SLOW TO ERODE THIS AFTN WITH KSBN VFR... BUT
KFWA STILL MVFR. EXPECT KFWA TO MIX OUT LATER THIS AFTN BY AROUND
19-20Z. SURFACE HIGH PRESSURE OVER THE GTLKS REGION TODAY WILL
SHIFT EAST OVERNIGHT AS THE UPPER LEVEL RIDGE AXIS BECOMES SITU
OVER THE GTLKS BY WED AFTERNOON. EXPECT VFR CONDS LATER THIS AFTN
THROUGH THE FCST PERIOD. WINDS WILL REMAIN EASTERLY THROUGH 18Z
WED.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
SYNOPSIS...MF
SHORT TERM...SKIPPER
LONG TERM...SKIPPER
AVIATION...T
VISIT US AT WWW.WEATHER.GOV/IWX
FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSNORTHERNINDIANA
WWW.TWITTER.COM/NWSIWX
WWW.YOUTUBE.COM/NWSNORTHERNINDIANA
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page