Marine Weather and Tides
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|Sunrise 5:46AM||Sunset 8:27PM||Thursday July 18, 2019 11:17 PM CDT (04:17 UTC)||Moonrise 8:52PM||Moonset 6:16AM||Illumination 96%|
7 Day Forecast for Marine Location Near Jacksonville, ILHourly EDIT Help
Area Discussion for - Central Illinois, IL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 kilx 190134|
area forecast discussion
national weather service lincoln il
834 pm cdt Thu jul 18 2019
Issued at 834 pm cdt Thu jul 18 2019
much of the afternoon clouds have faded away, though there is a
band of altocumulus pushing southeast from the illinois river
valley at sunset. Dew points remain quite tropical, mid 70s to
around 80 degrees in some cases, and this should keep temperatures
quite warm though the night. Forecast was largely on track; the
only change was to update the zones to remove the heat index
mention for overnight.
Short term (this evening through Friday)
issued at 252 pm cdt Thu jul 18 2019
19z 2pm visible satellite imagery shows an outflow boundary from
convection that pushed across northern illinois earlier today just
north of the i-74 corridor. While a cu-field has developed along
this boundary, mid-level capping as evidenced by a maximum warm
layer temperature of 16c on the 12z kilx upper air sounding will
prevent convective development for the remainder of the afternoon.
The boundary will gradually dissipate mix northward by early
evening, followed by clear skies and muggy conditions tonight.
Another complex of thunderstorms will develop much further north
along a synoptic warm front across southern minnesota into
wisconsin overnight: however, this activity will remain well north
of the area. Lows tonight will only drop into the middle to upper
70s. Even hotter weather will be on tap for Friday as the primary
thermal ridge axis builds into illinois. Afternoon highs will top
out in the middle 90s with peak heat index values exceeding 105
Long term (Friday night through Thursday)
issued at 252 pm cdt Thu jul 18 2019
one more very hot day will be in store for Saturday as heat index
values once again climb above 105 degrees. However, relief from
the heat is on the way... As a major pattern change will bring much
cooler and less humid conditions into the area next week.
12z jul 18 models are all in excellent agreement showing a
short-wave tracking across southern canada... Then digging a|
significant trough over eastern canada into new england by Monday.
This will push a cold front southward into the region, with the
nam gfs ECMWF gem all bringing the front to near the i-72 corridor
by 12z sun. Given the highly capped airmass in the warm sector ahead
of the boundary, most models suggest its associated convection
will be post-frontal. As a result, think dry conditions will
prevail through Saturday... With pops increasing across the
northern half of the CWA by late Saturday night. Sunday will
feature the best rain chances across the entire area as the front
sinks slowly southward.
After a few lingering showers storms across mainly the southern
cwa Sunday night, a much cooler drier airmass will spill into the
region behind the departing cold front. Highs on Monday will only
reach the lower 80s, while lows Monday night dip into the upper
50s and lower 60s. While upper heights will gradually rise by the
middle of next week, prevailing northwesterly flow will ensure the
continuation of pleasant conditions with temperatures remaining in
the 80s through Thursday.
Aviation (for the 00z tafs through 00z Friday evening)
issued at 623 pm cdt Thu jul 18 2019
vfr conditions expected through the period. Diurnal cumulus is
showing signs of fading, though a few thicker bands of clouds are
persisting near kpia. Main concern will be with winds. While they
have been gusting over 20 knots this afternoon, they are starting
to show signs of fading, but will still be 7-10 knots overnight.
Kept low level wind shear in for kpia, which will be on the edge
of the jet streak moving from missouri to northern illinois.
Ilx watches warnings advisories
Excessive heat warning until 7 pm cdt Sunday for ilz038-043>046-
Excessive heat warning until 7 pm cdt Saturday for ilz027>031-
short term... Barnes
long term... Barnes
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|Jacksonville Municipal Airport, IL||3 mi||23 min||SSW 10 G 14||10.00 mi||Fair||84°F||75°F||75%||1010.8 hPa|
Wind History from IJX (wind in knots)
|1 day ago||SW||SW||SW||Calm||Calm||SW||Calm||SW||Calm||SW||W||Calm||W||SW||Calm||Calm||SW||S||NW|
|2 days ago||SE||SE||E||E||E||SE||SE||SE||SE||S||S||SE||SW||Calm||Calm||Calm||NW||W||N||N||Calm||Calm||Calm||SW |
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Wind Forecast for Central Illinois, IL (0,6,7,8)(on/off)  Help
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