Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 5:37AM||Sunset 8:33PM||Saturday July 4, 2020 7:01 AM CDT (12:01 UTC)||Moonrise 7:27PM||Moonset 3:56AM||Illumination 99%|
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 041039 AFDILX
Area Forecast Discussion National Weather Service Lincoln IL 539 AM CDT Sat Jul 4 2020
SYNOPSIS. Issued at 239 AM CDT Sat Jul 4 2020
High pressure will continue to bring summertime heat to central and southeast Illinois, for the holiday weekend. Highs will reach the lower 90s today and Sunday, while dry weather persists.
SHORT TERM. (Today through Sunday) ISSUED AT 239 AM CDT Sat Jul 4 2020
Upper ridge axis extends from west TX up through the western Great Lakes and into central Canada early this morning. At the surface, high pressure had moved very little from 24 hours ago, with a 1018 mb ridge over the western Great Lakes. Light northeast trajectories provided moderate humidity levels for much of the area where dewpoints were in the 60s, though where rains have fallen in recent days lower 70s dewpoints were more common southwest of a Jacksonville to Olney line. Low dewpoint depressions and light winds resulted in patchy light fog over the far southwest CWA.
Little change in the overall pattern today as the ridging at the surface and aloft provides hot and dry weather. Highs should reach the lower 90s and with mid/upper 60s dewpoints peak heat indices will be in the mid 90s. Pops remain below mentionable levels due to a capping inversion at 700 mb. This appears weaker over eastern IL, but CAMs suggest any isolated afternoon activity would be farther east into Indiana. Tonight will feature mainly clear skies and lows near 70. More of the same is expected on Sunday as the surface ridge remains over the Great Lakes. Highs may be a degree or two warmer, so with modest humidity levels heat indices to again peak in the mid 90s. Just an outside chance for an isolated storm primarily over the southern CWA.
LONG TERM. (Monday through Friday) ISSUED AT 239 AM CDT Sat Jul 4 2020
The main story through the extended forecast will be persistent heat, with increasing humidity as we head through the first half of the week. Highs should generally remain in the lower 90s with possibly a few mid 90s through the period. A higher dewpoint pool to our southwest will advect in as the surface ridge currently over the Great Lakes shifts east, allowing south to southwest low level flow to develop. This will make lower 70s dewpoints more common beginning on Monday. Mid/upper 90s afternoon heat indices will be a daily occurrence through the week.
While widespread rain chances continue to look fairly low, there are several opportunities for at least scattered storms during the work week. Separate upper waves will flatten the ridge on Monday and Tuesday, and this could produce enough mid level cooling this far south the erode the cap and allow isolated to scattered, mainly afternoon convection. In the wake of these waves the mid level flow temporarily turns northwest, and this may open up a better chance for scattered storm clusters Wednesday and Thursday. Due to uncertainty in coverage pops were capped at 40 percent through the extended portion of the forecast.
AVIATION. (For the 12Z TAFS through 12Z Sunday morning) Issued at 539 AM CDT Sat Jul 4 2020
High pressure over the Great Lakes will keep light northeast flow in place through tonight. VFR skies will prevail with scattered diurnal cu, otherwise passing cirrus.
ILX WATCHES/WARNINGS/ADVISORIES. NONE.
SYNOPSIS . 25 SHORT TERM . 25 LONG TERM . 25 AVIATION . 25
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|Jacksonville Municipal Airport, IL||3 mi||67 min||E 4||5.00 mi||Fog/Mist||67°F||66°F||99%||1016.3 hPa|
Link to 5 minute data for KIJX
Wind History from IJX (wind in knots)
|1 day ago||Calm||Calm||Calm||E||Calm||E||NE||E||E||E||E||NE||NE||Calm||Calm||E||E||Calm||Calm||NE||E||NE||E||E|
|2 days ago||SE||E||Calm||SE||Calm||Calm||E||Calm||W||Calm||W||NW||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Central Illinois, IL (8,2,3,4)(on/off)  Help
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