Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:01AM||Sunset 4:40PM||Friday December 6, 2019 11:59 PM CST (05:59 UTC)||Moonrise 1:52PM||Moonset 1:22AM||Illumination 78%|
7 Day Forecast for Marine Location Near Fairview Heights, ILHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KLSX 070528 AFDLSX
Area Forecast Discussion . Updated Aviation National Weather Service Saint Louis MO 1128 PM CST Fri Dec 6 2019
SHORT TERM. (Through Late Saturday Night) Issued at 333 PM CST Fri Dec 6 2019
The low post frontal stratus is forecast to move south of the area by early evening, leaving a mostly clear sky for the remainder of the night. The surface high, currently centered over the Upper Midwest, will slide ESE into the area tonight into Saturday. Southerly winds on the west side of the high will advect warm air into the CWA Saturday afternoon, helping boost temperatures into the upper 40s and low 50s. Under the influence of the surface high the area is forecast to be dry until the next system approaches late Sunday night into Monday.
LONG TERM. (Sunday through Next Friday) Issued at 333 PM CST Fri Dec 6 2019
Southerly flow will persist into Sunday, causing temperatures to continue to moderate into the mid to upper 50s ahead of another surface cold front and associated low pressure system.
The approaching surface low and attendant cold front are driven by a strong mid level trough, swinging through the Midwest on Monday. Ensemble guidance and deterministic model output continue to show a signal of rain late Sunday into early Monday ahead of the front. But the main area of rain will be along the line of low level frontogenesis just ahead of the cold front. The cold front and rain will marching through during the day and exit the CWA Monday afternoon/early evening. As temperatures cool behind the front, any lingering precipitation could fall as light snow before moving out of the area completely.
Guidance is in agreement that temperatures will likely be 10 to 15 degrees below normal Tuesday through Thursday in the wake of the front, aided by a strong high pressure and associated northwesterly flow. Temperatures will rebound Friday as the high moves out of the region and flow becomes southerly once more.
Dry weather is favored behind the cold front on Monday. However, guidance is suggesting a clipper swinging through the area mid week, though deterministic guidance and ensemble members currently show little agreement in location and timing.
AVIATION. (For the 06z TAFs through 06z Saturday Night) Issued at 1114 PM CST Fri Dec 6 2019
High pressure building from the north has calmed winds at the terminals, which has increased the potential for fog at some sites. If fog develops, VSBYs should improve by the mid- morning. VFR conditions will prevail at all terminals for the remainder of the period. Winds will become predominantly southerly by the early afternoon, but remain light.
SPECIFICS FOR KSTL/KSUS/KCPS:
Calm winds at STL, SUS, and CPS, coupled with sufficiently high dew points, have increased the chance for fog at these sites. SUS should fall to MVFR VSBYs first, followed by STL and CPS. By 14Z, winds should begin to mix the fog out of the terminals. VFR conditions will then prevail for the remainder of the period.
PRELIMINARY POINT TEMPS/POPS. Saint Louis 28 49 38 56 / 0 0 0 0 Quincy 25 46 35 51 / 0 0 0 5 Columbia 26 49 37 55 / 0 0 0 5 Jefferson City 26 51 36 57 / 0 0 0 0 Salem 28 47 36 54 / 0 0 0 5 Farmington 27 50 35 55 / 0 0 0 5
LSX WATCHES/WARNINGS/ADVISORIES. MO . None. IL . None.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|St. Louis Downtown Airport, IL||8 mi||66 min||N 0||10.00 mi||Fair||28°F||25°F||88%||1029.9 hPa|
|Belleville, Scott AFB/MidAmerica Airport, IL||8 mi||63 min||N 0||10.00 mi||Fair||29°F||25°F||86%||1029.5 hPa|
|St. Louis Regional Airport, IL||23 mi||64 min||N 0||10.00 mi||Fair||25°F||24°F||100%||1029.5 hPa|
|St. Louis Lambert International Airport, MO||23 mi||2.1 hrs||N 0||10.00 mi||Fair||33°F||28°F||82%||1029.9 hPa|
Link to 5 minute data for KCPS
Wind History from CPS (wind in knots)
|1 day ago||Calm||Calm||Calm||SE||Calm||Calm||Calm||Calm||S||S||SE||S||SE||S||SW||S||S||S||S||SE||SE||S||Calm||Calm|
|2 days ago||W||W||W||W||W||W||W||W||W||W||W||W||W||SW||W||W|
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GEOS Local Image of EDIT
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for St. Louis, MO (0,6,7,8)(on/off)  Help
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