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 7:09AM||Sunset 4:42PM||Thursday December 5, 2019 2:17 PM CST (20:17 UTC)||Moonrise 1:33PM||Moonset 12:29AM||Illumination 64%|
7 Day Forecast for Marine Location Near Hannibal, MOHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KLSX 051737 AFDLSX
Area Forecast Discussion . Updated Aviation National Weather Service Saint Louis MO 1137 AM CST Thu Dec 5 2019
SHORT TERM. (Through Late Friday Afternoon) Issued at 303 AM CST Thu Dec 5 2019
Weak surface low over the TX/OK panhandle as of 08z Thursday will continue to deepen and slide east southeast into AR by 12z Friday. In the meantime, warm southerly winds will allow temperatures to warm up into the mid 50s to around 60 today, about 10 to 15 degrees above normal. Some concern that the mid and high clouds that will spread northeastward across the region today ahead of weather system will affect how warm it gets. For now feel that the clouds will be thin enough to allow decent sunshine, so will keep the temps on the warm side of guidance.
By this evening, with increasing low level moisture and decent lift will see rain develop and spread northeastward across the region. The best chances of rain will be along and south of I-70 during the late evening and overnight hours tonight, so kept likely pops in this area.
As system exits region Friday morning, surface ridge will build in with rain tapering off by midday. Colder and drier air on back side of system will advect into the region with highs only in the 40s to low 50s on Friday.
LONG TERM. (Friday Night through Wednesday) Issued at 303 AM CST Thu Dec 5 2019
Surface ridge will remain overhead Friday night, so with clearing skies and light winds lows will dip down into the 25 to 30 degree range. By Saturday, surface ridge will begin to shift off to the east allowing southerly winds to return to the region once again. So temperatures will moderate through the weekend and into early next week. Otherwise, active zonal flow aloft with next in a series of shortwaves approaching region on Sunday. Precipitation chances on the increase Sunday night persisting through Monday night. Extended models are hinting at much colder air filtering into the region behind this system, so could see brief shot of wintry precipitation as system exits region Monday night and well below normal temperatures beyond that.
AVIATION. (For the 18z TAFs through 18z Friday Afternoon) Issued at 1112 AM CST Thu Dec 5 2019
Current VFR conditions are forecast to degrade tonight as an approaching cold front and precipitation shield move into the area. Mid level clouds will continue to build to the northeast through the day ahead of the rain. Clouds will build in at MVFR heights toward dawn Friday and persist until the afternoon hours when widespread clearing will occur. Brief periods of IFR conditions are possible through the remainder of the TAF period. The cold front will begin to move through KUIN at 09Z and move through KCOU and the metro terminals around 11Z, producing a significant wind shift from southwesterly to northerly and an increase in wind speed to 10-15 mph. Some gusts are expected at KUIN on the order of 20-25 mph. The northern edge of the light rain shield is expected to approach the KCOU-KSTL line before moving out to the southeast Friday morning.
SPECIFICS FOR KSTL:
VFR conditions are forecast to prevail even while mid level clouds build in through the day and evening associated with the approaching light rain shield. A cold front will move through the terminal tomorrow morning around 12Z bringing an increase in wind speed to 10-15 mph, a wind shift from southwesterly to northerly, and an MVFR cloud deck. Behind the front IFR ceilings are possible but at this point have held off on including them in the TAF due to low confidence of IFR reaching into the metro. Ceilings are expected to improve dramatically during the afternoon as dry air advects in from the northwest and ceilings rise back up to VFR conditions.
PRELIMINARY POINT TEMPS/POPS. Saint Louis 60 42 46 29 / 0 50 30 0 Quincy 55 34 41 27 / 0 10 5 0 Columbia 59 37 44 27 / 0 50 20 0 Jefferson City 60 38 46 27 / 0 60 30 0 Salem 55 43 48 28 / 0 60 40 0 Farmington 58 42 49 28 / 5 80 60 0
LSX WATCHES/WARNINGS/ADVISORIES. MO . None. IL . None.
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|Quincy Regional Airport-Baldwin Field, IL||18 mi||23 min||S 8||10.00 mi||Fair||57°F||37°F||49%||1013.2 hPa|
Link to 5 minute data for KUIN
Wind History from UIN (wind in knots)
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|2 days ago||NW||NW||NW||Calm||Calm||SE||S||S||S||S||S||S||S||S||S||S||SW||SW||SW||SW||W||SW||W||W |
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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 St. Louis, MO (15,3,4,5)(on/off)  Help
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