Text Products for AFD Issued by IWX

Area Forecast Discussion
Issued by NWS Northern Indiana

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000
FXUS63 KIWX 220612
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
212 AM EDT Mon Apr 22 2024

.KEY MESSAGES...

-- Changed Discussion --
- Showers Tuesday, turning cool Wednesday-Thursday with frost
  possible early Thursday morning

- Big warmup next weekend-- End Changed Discussion --

&&

.DISCUSSION...
-- Changed Discussion --Issued at 212 AM EDT Mon Apr 22 2024

Weak warm advection this morning will ramp this aftn as flow veers
swrly ahead of potent nrn stream wave ovr wrn MB attm. This wave and
its counterpart over nern Hudson Bay have trended less phased since
yesterday which is of note as it yields a less substantial cold
advection wing Wed night and hopefully staves off a hard freeze.
Delayed moisture entrainment ahead of this sys will keep rain
amounts down from what they could be given excellent frontal/upper
dynamics, heaviest south in proximity to deeper but late arriving
theta-e ridge. Chilly post frontal airmass follows Wed which sets
the stage for another widespread frost Wed night if not a freeze
although trend has ticked higher for overnight mins.

Strong rebound follows as pattern aloft across the CONUS reshuffles
in response to sig wrn-cntrl US troughing Thu onward which will
bring about unseasonably warm wx by next weekend as substantial
downstream thermal ridge builds. Steady pump of low level moisture
within broad/deepening warm sector periods of showers and increasing
thunder with time Fri-Mon although notable spread indicated with
timing/placement of wave disturbances ejecting out of the wrn US
longwave trough.-- End Changed Discussion --

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1208 AM EDT Mon Apr 22 2024

Return flow associated with a large anticyclone over the Gulf
states will persist through the TAF period. Winds will be light
the rest of the night then increase and gradually back to the
south with the approach of a cold front toward the end of the
period. VFR conditions will prevail through 23/06Z.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...Frost Advisory until 8 AM EDT /7 AM CDT/ this morning for
     INZ005>009-012>015-017-018-020-022>027-032>034-103-104-
     116-203-204-216.
OH...Frost Advisory until 8 AM EDT this morning for OHZ001-002-004-
     005-015-016-024-025.
MI...Frost Advisory until 8 AM EDT this morning for MIZ078>081-177-
     277.
MARINE...None.

&&

$$

DISCUSSION...T
AVIATION...Skipper

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