Marine Weather and Tides
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
|Sunrise 6:24AM||Sunset 7:47PM||Wednesday August 23, 2017 11:45 PM CDT (04:45 UTC)||Moonrise 7:21AM||Moonset 8:09PM||Illumination 4%|
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7 Day Forecast for Marine Location Near Wright City, MOHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 klsx 240430|
area forecast discussion... Updated aviation
national weather service saint louis mo
1130 pm cdt Wed aug 23 2017
Short term (through late Thursday afternoon)
issued at 310 pm cdt Wed aug 23 2017
the synoptic pattern early this afternoon features a trough across
the northeastern conus, which will place the midwest within cyclonic
northwesterly flow through the period.
Pretty spectacular weather is on tap through tomorrow as surface
high pressure currently over southwest ia northwest mo continues to
influence our sensible weather. This high will shift east across
the region tonight, allowing for calm winds and clear skies. With
dewpoints having mixed out into the low 50s this afternoon,
expect a cool night. Went below guidance for temps tonight which
places them in the mid to upper 50s. Would not be surprised to see
some of the cooler valley locations dip into the low 50s or even
upper 40s. Given these cool temperatures over relatively warm
river waters, can't rule out some steam fog developing early
Thursday looks like a carbon copy of today. Expect mostly sunny
skies (perhaps a bit more high-level cloudiness over northern
mo western il) with temperatures in the upper 70s to low 80s.
Long term (Thursday night through next Wednesday)
issued at 310 pm cdt Wed aug 23 2017
the synoptic pattern at the start of the long term period will
feature continued northwesterly flow aloft, a pattern which will
shift to more northerly through the period as a PV anomaly digs
southeast out of central canada. This regime will make for continued
seasonably cool conditions along with increasing shower storm
chances this weekend into early next week.
Friday and Saturday will continue the stretch of very pleasant late
august weather as surface high pressure over the great lakes
continues to influence our sensible weather. Highs each day will|
continue to run below normal, with highs in the upper 70s low 80s.
Forecast confidence begins to decline Saturday night into early next
week. There are a couple factors at play leading to this lowered
confidence: (1) a PV anomaly and associated area of low pressure
diving southeast and (2) the remnants of what is expected to be
hurricane harvey in the western gulf of mexico. In general,
guidance has sped up the arrival of PV anomaly and associated
surface cold front. The gem still is a quick outlier, thus a blend
of the ECMWF gfs GEFS is preferred. This brings a threat of
showers storms to the area as early as Saturday night which looks to
last into early next week as the PV anomaly helps to close off an
upper-level low near the region.
Just how quickly that upper low pulls out will likely be influenced
by the remnants of hurricane harvey. The consensus is for the upper-
level low to be shunted to the east by the middle of next week as
harvey lifts northeast into the tn valley. However, some outlying
guidance wants to lift harvey more due north which could would then
affect portions of the area mid-late next week. Still plenty of time
to figure out the details, but thinking is that much of the moisture
associated with harvey will remain southeast of the region.
Aviation (for the 06z tafs through 06z Thursday night)
issued at 1128 pm cdt Wed aug 23 2017
surface ridge to remain over region through forecast period, so
vfr conditions with light and variable winds. Still can't rule out
some river fog towards daybreak, but confidence is low so kept
mention out for now.
Lsx watches warnings advisories
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|St. Louis, Spirit Of St. Louis Airport, MO||27 mi||52 min||N 0||10.00 mi||Fair||61°F||60°F||97%||1017.4 hPa|
Wind History from SUS (wind in knots)
|1 day ago||S||S||SW|
|2 days ago||S||Calm||Calm||Calm||NW||Calm||Calm||W||W||SW||W||W||SW||SW||W||W||SW||W||SW||E||Calm||Calm||Calm||S |
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|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Midwest EDIT
Wind Forecast for St. Louis, MO (0,6,7,8)(on/off)  Help
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