Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 7:58AM||Sunset 5:31PM||Tuesday December 18, 2018 10:17 PM EST (03:17 UTC)||Moonrise 2:51PM||Moonset 3:15AM||Illumination 88%|
7 Day Forecast for Marine Location Near Birdseye, INHourly EDIT Help
Area Discussion for - Louisville, KY  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 klmk 182320|
area forecast discussion
national weather service louisville ky
620 pm est Tue dec 18 2018
Updated aviation discussion...
Short term (this evening through Wednesday)
issued at 250 pm est Tue dec 18 2018
sfc high pressure and upper level ridging will move off the east
tonight resulting in mostly clear skies and dry conditions. Low
temps should range through the lower 30s.
A weak southerly return flow will begin early Wednesday morning.
This will result in mild conditions for tomorrow with high temps in
the mid 50s to around 60. Clouds will increase from the southwest
late in the day ahead of the next weather system.
Long term (Wednesday night through Tuesday)
issued at 323 pm est Tue dec 18 2018
Complex storm system to affect our area Thu and fri...
a deep SW flow regime will be in place over much of the eastern
conus ahead of an amplified central CONUS trough. Expect increasing
cloud cover with light rain chances gradually overspreading the
region on an isentropic lift component evident on 290-300 k theta
surfaces. Everyone won't see rain Wednesday night, but chances will
be steadily increasing. Temps will bottom out in the low to mid 40s.
Thursday - Friday...
strong and deep low pressure will ride up the appalachian spine into
the eastern great lakes through the end of the work week. As this
occurs, deeper moisture should wrap into the system both from the
gulf and atlantic. We'll see periods of light to moderate rain, with
a few pockets of heavier rain also possible. Will continue with high
pops during this time frame with overall QPF ranging from 0.5 to
1.5". The highest amounts should fall over the eastern CWA near the
Although we do expect mostly rain, just enough cold air may be
introduced on Friday to see a rain snow mix of brief change to snow.
Even in that scenario, surface temps will stay above freezing, so
any snow will be falling on an already wet and above freezing
surface so doubt any accums would materialize. In addition, the
deepest moisture is pulling out of the area by the time the colder
air arrives so any change in p-type should be mostly light in nature
by that time. Overall, this system has trended east and weaker from
With the weaker expected system, expected wind nnw winds gusts on|
Friday also aren't as impressive as they were. It will still be
gusty, but most gusts appear to be more in the 25-35 mph range as
steep low level lapse rates reach up into a ~30 knot layer of winds.
After highs around 50 on Thursday, expect pretty a pretty small
diurnal range between Thursday night and Friday. After lows fall
into the upper 30s to around 40 on Thursday night, only expect highs
to bump a couple few degrees on Friday as a strong cold advection
component combines with heavy cloud cover and plenty of
precipitation. Temps aren't going to go anywhere in that scenario.
So, only calling for highs in the low 40s on Friday, and that might
Friday night - Saturday night...
the upper trough axis quickly lifts out of the region Friday night,
with precipitation chances ending from W to E as the deeper moisture
and deformation band lift out of the area. The colder air finally
does get in here by Saturday morning, with temps in the upper 20s by
Surface high pressure and benign zonal flow aloft control Saturday
and Saturday night, keeping us dry with temps near normal.
Sunday - christmas day...
confidence lowers overall to end the weekend and go into christmas
as models diverge on a couple of weaker disturbances passing through
the zonal flow aloft. Will likely keep some small chances in during
this time, but it's hard to be too specific or confident given the
spread in solutions. At the very least it looks like precipitation,
if any, would be mostly liquid. Although, there could be a brief
overunning mix on christmas morning if the ECMWF canadian are to be
believed. Overall, chances for a white (accumulating snow) christmas
seem low to nil at this point. Temps may even be slightly above
normal during the daylight hours for the first part of the week.
Aviation (00z TAF issuance)
updated at 620 pm est Tue dec 18 2018
high pressure ridging over the region from the east will continue to
provideVFR conditions this TAF period. Dry conditions should help
to alleviate any fog formation Wednesday morning. By late morning,
expect winds to pick up a little from the south, in the 5-10 knot
Lmk watches warnings advisories
Short term... Ams
long term... Bjs
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|Huntingburg, IN||15 mi||82 min||N 0||10.00 mi||Fair||36°F||30°F||79%||1021.1 hPa|
Wind History from HNB (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||W||W||W||NW||W||NW||S||W||W||NW||NW||N||NW||NW||NW||NW||NW||N|
|2 days ago||NW||NW||NW||NW||N|
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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 Louisville, KY (22,6,7,8)(on/off)  Help
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