Area Forecast Discussion
Issued by NWS St. Louis, MO

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FXUS63 KLSX 301714
AFDLSX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE ST LOUIS MO
1214 PM CDT Wed Jul 30 2014

.UPDATE:
Issued at 1204 PM CDT Wed Jul 30 2014

Quick update to mainly adjust temps and cloud cover thru the
afternoon. Increased clouds across srn counties and therefore also
decreased temps slightly and raised temps across the remainder of
the CWA by a couple of degrees. Is still some question regarding
precip across the srn tier of counties, but will leave the
forecast dry for now. More uncertainty remains during the
overnight hours as the system continues to approach the region.
Again, will keep a dry forecast for now, but PoPs may need to be
added for tonight with further updates.

&&

.SHORT TERM: (Through Tonight)
Issued at 259 AM CDT Wed Jul 30 2014

Highs in the upper 70s to lower 80s will be around 5-10 degrees
below average for this time of year, similar to yesterday. Although
a few isolated light rain showers or sprinkles cannot be ruled
out, most areas should remain dry this afternoon. Good radiational
cooling conditions within a relatively dry air mass (Tds in the
50s) should yield another night with lows in the upper 50s to
around 60 degrees.

Kanofsky

.LONG TERM: (Tomorrow through Tuesday)
Issued at 259 AM CDT Wed Jul 30 2014

In the continued absence of any strong signals for either
widespread precip or hot/humid conditions, there has been little
change in thinking since the previous forecast package was issued.
Ongoing northwest flow pattern will maintain cooler than average
temperatures through the end of the week and into the first part
of the weekend. Occasional ill-defined shortwaves moving through
the longwave trough might produce light rain showers or even a few
thunderstorms over the next few days, especially during the
afternoon hours. The upper air pattern begins to change over the
weekend, and temperatures/humidity are expected to warm back
towards seasonable levels next week after the departure of the
longwave trough over the eastern CONUS and the return of southerly
low-level flow over MO/IL.

Kanofsky

&&

.AVIATION:  (For the 12z TAFs through 12z Thursday Morning)
Issued at 617 AM CDT Wed Jul 30 2014

Other than some locallized radiational fog for the next hour or
so, VFR flight conditions will prevail through the forecast
period. Surface high pressure will remain in control resulting in
light winds, while clouds will consist of diurnal cu and high clouds.

Specifics for KSTL:

VFR flight conditions will prevail through the forecast period.
Surface high pressure will remain in control resulting in light
winds, while clouds will consist of diurnal cu and high clouds.

Glass

&&

.LSX WATCHES/WARNINGS/ADVISORIES:
MO...NONE.
IL...NONE.
&&

$$

WFO LSX






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