Area Forecast Discussion
Issued by NWS Northern Indiana

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000
FXUS63 KIWX 040014
AFDIWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
714 PM EST TUE MAR 3 2015

.SYNOPSIS...
ISSUED AT 1038 AM EST TUE MAR 3 2015

AREAS OF FOG...LIGHT RAIN AND DRIZZLE WILL CONTINUE THIS EVENING
IN ADVANCE OF A COLD FRONT. THE COLD FRONT WILL CHANGE THE LIGHT
PRECIPITATION TO A PERIOD OF LIGHT SNOW BEFORE ENDING BY
DAYBREAK. LOWS WILL FALL INTO THE MID TEENS ACROSS NORTHWEST
INDIANA TO THE MIDDLE 20S NEAR LIMA OHIO. IT WILL REMAIN MOSTLY
CLOUDY ON WEDNESDAY WITH HIGHS ONLY INTO THE 20S.

&&

.SHORT TERM...(THIS EVENING THROUGH WEDNESDAY)
ISSUED AT 418 PM EST TUE MAR 3 2015

HIGH SUN ANGLE OF EARLY MARCH ALONG WITH PERSISTENT LOW LEVEL WAA
HAVE VASTLY IMPROVED SURFACES ACRS ENTIRE CWA. ANY LINGERING
SHELTERED AREAS IN FAR NERN CWA SHOULD CONTINUE TO MELT NEXT
COUPLE HOURS. KATAFRONTAL PRECIP SHIELD ON MARKED DOWNTREND LATER
THIS EVENING WITH FROPA WITH ONLY LIGHT PRECIP AMOUNTS BYND 00
UTC. SLIGHT CONCERN WITH SHALLOW SFC BASED UNDERCUT OF COLDER AIR
IN EXTREME FAR SERN CWA COINCIDENT W/FROPA TO PRESENT LIGHT ZR
THERMAL PROFILE BRIEFLY NEAR CHANGEOVER TO FROZEN IN 06-09 UTC
TIMEFRAME. REMOVED RESIDUAL LES AS THERMAL DIFFERENTIALS QUITE
LACKLUSTER INTO WED. STILL DEEPENING CAA TO PROVIDE LITTLE TEMP
RECOVERY FOR WED.

&&

.LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)
ISSUED AT 418 PM EST TUE MAR 3 2015

ANOTHER SURGE OF ARCTIC AIR SETTLES INTO THE REGION THURSDAY AND
FRIDAY. THIS WILL DRIVE TEMPERATURES SOME 15 TO 20 DEGREES BELOW
NORMAL THROUGH FRIDAY. OPEN WATERS ON LAKE MICHIGAN AND THIS WILL
SUPPORT LAKE EFFECT SNOW SHOWERS WEDNESDAY NIGHT INTO THURSDAY...
HOWEVER ACCUMULATION WILL BE GENERALLY LIGHT.

COLD AIR RETREATS BEGINNING FRIDAY THROUGH THE WEEKEND. WITH
TEMPERATURES RECOVERING TO NEAR TO SLIGHTLY ABOVE NORMAL BY
SUNDAY/MONDAY. GIVEN THE INCREASED SUN ANGLE THIS IS NOT OUT OF
THE QUESTION. WILL NEED TO BE WATCHED AND WOULD NOT BE SURPRISED
IF THE MAX TEMPERATURES ARE TOO OPTIMISTIC IN THE LATTER PERIOD.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z WEDNESDAY EVENING)
ISSUED AT 714 PM EST TUE MAR 3 2015

POST FNTL AIRMASS SLOWLY DRYING OUT AS LL CAA RATCHETS UP AGAIN.
HWVR MID LVL TROUGH AXIS IS NOW HUNG UP THROUGH THE OH VALLEY
DOWNSTREAM OF EJECTING POTENT SWRN US SW TROUGH AND SHLD AIDE IN
CONTD GENERALLY LWR END MVFR CIGS TO FESTER UNTIL MID MORNING WED
AS SECONDARY ARCTIC COLD FRONT AND MUCH COLDER AIR SWEEPS INTO
THROUGH WED AFTN/EVE.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
&&

$$

SYNOPSIS...MURPHY
SHORT TERM...MURPHY
LONG TERM...LEWIS
AVIATION...T


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