Wednesday, September19, 2018 L-36.com


Marine Weather and Tides
Shepherdsville, KY

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 7:27AMSunset 7:45PM Wednesday September 19, 2018 1:39 PM EDT (17:39 UTC) Moonrise 3:57PMMoonset 1:13AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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7 Day Forecast for Marine Location Near Shepherdsville, KY
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location: 38, -85.7     debug


Area Discussion for - Louisville, KY
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Fxus63 klmk 191730
afdlmk
area forecast discussion
national weather service louisville ky
130 pm edt Wed sep 19 2018

Updated aviation discussion...

Short term (today and tonight)
issued at 200 am edt Wed sep 19 2018
the much advertised upper ridge will build from the ozarks into the
tennessee valley today. This will spell another partly cloudy and
hot day today with highs this afternoon in the lower 90s in most
locations. Heat index readings will peak in the upper 90s west of
interstate 65. A few showers could pop up in the afternoon CU field
but coverage should be less than 15%.

Quiet weather will continue tonight under the ridge with mostly
clear skies, nearly calm winds, and muggy conditions. Rural
locations may drop into the upper 60s while more urban spots will
only settle into the 70-75 degree range... Not far from record warm
minima for september 20.

Long term (Thursday through Tuesday)
issued at 253 am edt Wed sep 19 2018
hot and mostly dry weather will continue through Thursday and part
of Friday thanks to a large upper level ridge in the southeastern
us. Highs each afternoon will top out in the upper 80s to low 90s,
and dewpoints in the mid to upper 60s will make it feel very summer-
like.

A change in our hot, dry weather will begin Friday afternoon as a
cold front races toward the lower ohio valley. Models keep the area
mostly dry to start in the morning, but develops showers and storms
ahead of the front by the afternoon. Deep layer shear ahead of the
front is not very strong across southern indiana and northern
kentucky (0-6km bulk shear <30kts) where showers and storms will
first impact the area, though with the timing of the front occurring
near peak heating, instability will be fairly high (2000-3000j kg).

This could result in some strong to marginally severe storms and
bowing segments, with the main threats being damaging winds and
hail. Pwats will also pool up ahead of the front to ~2", so heavy
rainfall will be possible in storms. The more organized severe
threat appears to be north northeast of our region where higher
shear and instability align closer to a strong area of low pressure
in quebec.

The models have the cold front clearing the region by Saturday
morning, but still vary on how far south it will go before it stalls
out. Multiple waves will then interact with the frontal boundary
through the weekend into early next week, resulting in several
rounds of showers and storms. The frontal boundary will eventually
lift northward as a warm front during the Monday Tuesday timeframe,
which may provide a brief break from precipitation. A very strong
cold front is then forecast to move through the lower ohio valley by
midweek, which will result in another round of showers and
potentially strong storms. Behind that cold front, a strong area of
high pressure should dry us out for several days and bring more fall-
like temperatures to the region.

Aviation (18z TAF issuance)
issued at 145 pm edt Wed sep 19 2018
upper ridge is still strongly in place over the region, which will
keep all TAF sitesVFR throughout Wednesday. Slight chance of fog
development in the early morning hours Thursday as skies clear out
overnight. Confidence isn't especially high on the development of
fog so included MVFR for reduced visibility at all TAF sites except
ksdf. Winds will be light out of the wsw today and then veer to the
se overnight. Expect a CU deck to form again tomorrow with afternoon
heating.

Lmk watches warnings advisories
In... None.

Ky... None.

Short term... 13
long term... Dm
aviation... Cg


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Louisville, Standiford Field, KY13 mi43 minVar 410.00 miA Few Clouds88°F71°F57%1015.6 hPa
Louisville, Bowman Field Airport, KY16 mi46 minW 410.00 miFair90°F71°F54%1015.8 hPa
Fort Knox, KY16 mi1.7 hrsN 07.00 miFair98°F71°F44%1016.3 hPa

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Last 24hr45
G15
W6W7W9NW4W4SW4CalmCalmSE3SW3CalmCalmSE3CalmSE3CalmCalmCalmCalmS3SW54
1 day agoN7N7NW5W4W5SW5SW6S3SW4SW6SW4SW3SW4S3SW44SW4S5S3SW3SW3W5W4W6
2 days agoNE8NE10NE10E10E9E10NE5NE6N4N5N5N6NE6N7N7N5N8N10N9N8NW8NW8NW7N9

Tide / Current Tables for
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Weather Map and Satellite Images
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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 (13,3,4,5)
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Ground Weather Radar Station Louisville, KY
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.