Area Forecast Discussion
Issued by NWS Northern Indiana

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000
FXUS63 KIWX 042347
AFDIWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
747 PM EDT TUE AUG 4 2015

.SYNOPSIS...
ISSUED AT 747 PM EDT TUE AUG 4 2015

HIGH PRESSURE WILL DOMINATE THE REGION THROUGH WEDNESDAY NIGHT
WITH PLEASANT CONDITIONS AND LOW HUMIDITY. THE NEXT CHANCE FOR
RAIN WILL ARRIVE THURSDAY AND THURSDAY NIGHT AS A SYSTEM PASSES
THROUGH THE OHIO VALLEY. WEDNESDAY MORNING LOWS WILL DIP INTO THE
MIDDLE TO UPPER 50S. HIGHS WEDNESDAY AFTERNOON TONIGHT WILL RANGE
FROM 55 TO 60 WITH HIGHS ON WEDNESDAY REACHING AROUND 80.

&&

.SHORT TERM...(THIS EVENING THROUGH WEDNESDAY)
ISSUED AT 344 PM EDT TUE AUG 4 2015

UPPER-LEVEL TROUGH THAT HAS SETTLED INTO THE AREA OVER THE LAST
SEVERAL DAYS WILL CONTINUE TO EXIT THE REGION THIS AFTERNOON AND
EVENING. IN IT`S WAKE WEAK 850HPA RIDGE BUILDS INTO THE REGION.
MOISTURE GRADIENT REMAINS SOUTH OF THE AREA SUPPRESSING CLOUDS
AND LEADING TO MOSTLY CLEAR SKIES TONIGHT. TEMPS IN THE LOW-MID
50S ACROSS CWA OVERNIGHT. FOR WEDNESDAY HIGH PRESSURE SAGS INTO
THE REGION AS 500HPA VORT MAX BEGINS TO INTERACT WITH THE LOW
CURRENTLY CENTERED OVER OKLAHOMA. AS OF NOW CLOUD COVER LOOKS TO
BE BUILDING SLIGHTLY OVER THE REGION ON WEDNESDAY IMPACTING THE
SOUTHERN CWA. TEMPS ON WEDNESDAY SHOULD STAY BELOW NORMAL WITH
HIGHS IN THE THE UPPER 70S TO LOWER 80S.

&&

.LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)
ISSUED AT 344 PM EDT TUE AUG 4 2015

A SHORT WAVE TROF WAS TOPING THE UPPER LEVEL RIDGE AND MOVING
INTO THE HIGH PLAINS THIS AFTERNOON. THIS SYSTEM WILL MOVE EAST
AND APPROACH THIS OHIO RIVER VALLEY WEDNESDAY NIGHT INTO THURSDAY.
THE GFS...ECMWF...NAM AND THE CANADIAN GEM HAVE TRENDED THIS
SYSTEM SOUTH WITH RECENT RUNS. GIVEN THIS TREND AND SUPPORT FROM
THE CIPS ANALOGS...AND THROUGH COORDINATION WITH NWS OFFICES...
HAVE TRENDED RAIN CHANCES DOWN WEDNESDAY NIGHT AND THURSDAY.

OTHERWISE...SOME ENERGY WILL CONTINUE TO TOP THE UPPER LEVEL RIDGE
THROUGH THE REST OF THE PERIOD. RETAINED SOME LOW SHOWER CHANCES
LATE THIS WEEK IN THIS REGARD. A STRONGER UPPER LEVEL TROF SHOULD
MOVE ACROSS THE AREA EARLY NEXT WEEK...WITH A REASONABLE CHANCE FOR
SHOWERS AND STORMS. OTHERWISE... TEMPERATURE SHOULD BE A LITTLE
BELOW NORMAL WITH THIS PATTERN WITH HIGHS GENERALLY AROUND 80 AND
LOWS 60 TO 65.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z WEDNESDAY EVENING)
ISSUED AT 745 PM EDT TUE AUG 4 2015

SFC RIDGE OVERHEAD TO CONTINUE TO PROVIDE VFR MET CONDS THROUGH
THE TAF VALID PERIOD AND BEYOND. DEEP MIXOUT THIS AFTERNOON TO
PRECLUDE ALL BUT LOW PROB SHALLOW/TRANSIENT/BRIEF BR.

&&

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

$$

SYNOPSIS...MURPHY
SHORT TERM...HOOK/FISHER
LONG TERM...SKIPPER
AVIATION...MURPHY


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