Area Forecast Discussion
Issued by NWS St. Louis, MO

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

FXUS63 KLSX 120427

1127 PM CDT SUN OCT 11 2015

.SHORT TERM:  (Through Late Tonight)
Issued at 221 PM CDT Sun Oct 11 2015

Other than some cirrus, sky will remain clear tonight with a
southwest wind and increasing dewpoints helping to keep
temperatures warmer than the previous two nights.


.LONG TERM:  (Monday through Next Sunday)
Issued at 221 PM CDT Sun Oct 11 2015

Cold front still expected to move across the area early on Monday
with a wind shift to the northwest. Temperatures should remain
warm on Monday, despite the early wind shift. These warm
temperatures coupled with dropping dewpoints (mixing) should
result in relative humidity values dropping toward critical fire
weather thresholds in the afternoon. Will continue to highlight
the heightened fire weather danger in the HWO.

Dominant northwest flow synoptic weather pattern will keep
temperatures seasonal and send several cold fronts toward the
region this week. Strongest front arrives Thursday night,
accompanied by a slight chance of showers. High temperatures next
Friday and Saturday look to be in the 60s, compared with the 70s
the rest of the week.



.AVIATION:  (For the 06z TAFs through 06z Monday Night)
Issued at 1117 PM CDT Sun Oct 11 2015

Cold front extending from northwestern WI sw into southwestern KS
will move southeastward through the taf sites late tonight and
Monday morning. This will be a dry frontal passage with only some
high level clouds expected. S-swly surface winds late tonight
will veer around to a nwly direction Monday morning after fropa.
Surface winds will be relatively strong and gusty Monday
afternoon. Strong swly low level winds around 1000-2000 feet in
height will lead to LLWS conditions late tonight.

Specifics for KSTL: Sly surface wind will veer around to a swly
direction late tonight, then to a w-nwly direction Monday morning
after fropa. The surface wind may be relatively strong and gusty
Monday afternoon. LLWS conditions can be expected late tonight due
to strong swly winds around 1000-2000 feet in height. The latest
LSX VWP was showing a southwest wind at 45 kts at 2000 feet. Just
some high level clouds are expected this forecast period.





WFO LSX is the U.S. government's official web portal to all federal, state and local government web resources and services.