Area Forecast Discussion
Issued by NWS Northern Indiana

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000
FXUS63 KIWX 011900
AFDIWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
300 PM EDT FRI MAY 1 2015

.SYNOPSIS...
ISSUED AT 1242 PM EDT FRI MAY 1 2015

HIGH PRESSURE WILL PROVIDE THE REGION WITH AMPLE SUNSHINE AND DRY
CONDITIONS TODAY INTO THIS WEEKEND. HIGHS THIS AFTERNOON WILL
RANGE BETWEEN THE MID 60S AND LOW 70S...WITH LOWS TONIGHT DROPPING
BACK INTO THE 40S. TEMPERATURES WILL CONTINUE TO SLOWLY MODERATE
OVER THE WEEKEND...WITH HIGHS GENERALLY IN THE LOW TO MID 70S ON
SATURDAY AND THE MID TO UPPER 70S ON SUNDAY.

&&

.SHORT TERM...(THIS EVENING THROUGH SATURDAY)
ISSUED AT 300 PM EDT FRI MAY 1 2015

GLORIOUS EARLY MAY WX WILL CONTINUE INTO TONIGHT AND SATURDAY AS THE
LOCAL AREA REMAINS UNDER THE INFLUENCE OF LOW LEVEL RIDGE
SETTLING INTO THE OH/TN VALLEYS. THE PASSAGE OF A WEAK/ELONGATED
MID LEVEL TROUGH IN FLATTENED FLOW...AND ASSOCIATED FOLD OVER OF
LEADING/ELEVATED THETA-E RIDGE OVERNIGHT INTO EARLY SATURDAY
MORNING...WILL LIKELY BRING AN INCREASE IN MID-HIGH LEVEL CLOUDS
DURING THIS TIME. CLEAR OTHERWISE OUTSIDE OF SOME DIURNAL CU WITH
AMPLE SUNSHINE AND DEEPER MIXING ON NORTHERN FRINGE OF THE
AFOREMENTIONED LOW LEVEL RIDGE AFFORDING LOW-MID 70S HIGHS
TOMORROW AFTER A SEASONABLY COOL START.

&&

.LONG TERM...(SATURDAY NIGHT THROUGH FRIDAY)
ISSUED AT 300 PM EDT FRI MAY 1 2015

POTENT SW ROLLING EWD SOUTH OF THE ALEUTIANS THIS AFTN WILL REACH
THE PACNW BY TUE AM AND THEN CARVE A PATH SEWD INTO THE FOUR CORNERS
AND CUTOFF BY LT NXT WEEK. LEAD SRN STREAM IMPULSE OFF THE SRN CA
COAST WILL LIFT OUT AHD OF THIS SYS THROUGH THE NRN PLAINS LT PD
WHILE LEAD NRN STREAM DISTURBANCE OVR WRN BC EJECTS EWD THROUGH SRN
CANADA EARLY IN THE PD.

FNTL BNDRY ASSOCD/W LEAD NRN STREAM SYS WILL PUSH E/S THROUGH MONDAY
BFR STALLING OUT ACRS DOWNSTATE IN/IL AND SERVE AS THE PRIMARY FOCUS
FOR PCPN DVLPMNT DYS 3-4. HWVR EWD FOLD OVER OF LL THETA-E RIDGE AND
LL MSTR PLUME RATHER BENIGN LOOKING W/MUCH BTR OVERLAP OCCURRING
WELL WWD FM W TX NWD INTO KS IN PROXIMITY TO LEE SIDE TROUGH. IN
FACT GENERAL FRONTOLYTIC WKNG OF FNTL BNDRY W/EWD EXTENT ALG
W/DECAYING LL MASS FLUX WITHIN VEERED WRLY LL FLW SUGGESTS MINIMAL
POPS NEEDED BEYOND MON NIGHT-TUE PD. THUS BROKE AWAY FM UNREALISTIC
ALLBLEND GUIDANCE IN FVR OF MORE SQUARELY ALIGNED GFS/EC/GEM BLEND
WHICH ARE DRY UNDERNEATH BLDG MID LVL RIDGE UNTIL FRI AT THE
EARLIEST.

TEMPS THROUGH THE PD WELL ABV NORMAL OUTSIDE TUE PD.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SATURDAY AFTERNOON)
ISSUED AT 1242 PM EDT FRI MAY 1 2015

VFR WITH LIGHT WINDS UNDER HIGH PRESSURE THROUGH THE TAF CYCLE.

&&

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

$$

SYNOPSIS...STEINWEDEL
SHORT TERM...STEINWEDEL
LONG TERM...T
AVIATION...STEINWEDEL


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