Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Shepherdsville, KY

Version 3.4
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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 7:01AMSunset 8:30PM Wednesday August 21, 2019 8:13 PM EDT (00:13 UTC) Moonrise 10:51PMMoonset 11:33AM Illumination 62% Phase: Waning Gibbous; Moon at 21 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 212332
afdlmk
area forecast discussion
national weather service louisville ky
732 pm edt Wed aug 21 2019

Updated aviation discussion...

Short term (this evening through Thursday)
updated at 310 pm edt Wed aug 21 2019

A few strong storms possible this evening...

hot and humid air mass remains in place across most of the ohio
valley, with a weakening convective complex spreading across central
and northern illinois. Fairly strong mid-level inversion is limiting
any convection overhead to a few flat cu, but we are starting to see
storms develop over southern illinois and southeast missouri on the
differential heating boundary at the edge of the anvil.

We'll see the cap continue to erode into this evening, allowing for
isolated to scattered storms to develop and affect mainly the areas
west of interstate 65. Environment remains weakly sheared, but there
is fairly strong instability once the cap is broken, so we could see
strong enough updrafts to support a marginal pulse severe threat.

Precip chances will continue through the night, but as daytime
instability is lost the storm intensity will decrease. By Thursday a
slow-moving cold front will move into the area and get hung up as it
becomes parallel to the upper flow. Could see repeated rounds of
storms through the day, with heavy rainfall and localized flooding
as the main hazards. There will be just enough shear to support a
few more organized clusters, but otherwise the severe threat is
limited.

Long term (Thursday night through Wednesday)
updated at 252 pm edt Wed aug 21 2019
unsettled weather will continue Thursday night into Friday as a cold
front slowly pushes southward. Models vary on how quick and how far
south the front will drop, which will impact the precipitation
forecast for the weekend. Additionally, a few models show a weak
shortwave lifting from the tn valley into the lower ohio valley late
Sunday into early Monday, sparking additional chances for showers
and storms. Don't think any one location will see prolonged rain for
the weekend, but certainly looks possible that a good portion of the
area will have a couple of chances to see some measurable rain.

The early to midweek forecast continues to look unsettled as the
previous cold front lifts northward as a warm front. An area of low
pressure will eject off of the plains and move into the midwest with
a trailing cold front. The gfs ECMWF cmc vary on how things evolve
into our region, with the cmc stalling the front out just before it
reaches us, while the gfs ECMWF push it through either Tuesday or
Wednesday. Best course of action at this point is to use a model
blend of solutions and maintain some pops into the extended.

Aviation (00z TAF issuance)
updated at 730 pm edt Wed aug 21 2019
a shower or storm is possible near bwg this evening in an unstable
airmass with convection nearby as of 2330z. The rest of the taf
sites should stay dry this evening.

Later tonight a front will lay out across the ohio valley, and low-
level jetting should create a convective complex progged to move
through the area during the pre-dawn hours. Will mention with -shra
and vcts for now. VFR-MVFR conditions will be possible in this late
night round of storms but have remained optimistic with this taf
issuance.

With the front over the area for Thursday, expect another round of
convection mainly during the afternoon hours.

Winds will generally remain w-sw throughout the TAF period reaching
6-8 kts Thu afternoon.

Lmk watches warnings advisories
In... None.

Ky... None.

Short term... Ras
long term... Dm
aviation... Ams


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Louisville, Standiford Field, KY13 mi77 minW 810.00 miMostly Cloudy89°F71°F55%1013.4 hPa
Fort Knox, KY16 mi2.3 hrsWSW 510.00 miOvercast87°F70°F59%1015.2 hPa
Louisville, Bowman Field Airport, KY16 mi20 minW 510.00 miA Few Clouds86°F71°F61%1013.3 hPa

Link to 5 minute data for KSDF

Wind History from SDF (wind in knots)
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Last 24hrSE5S6SW6SW6----------SW5SW6SW6----SW5SW6W10
G15
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1 day agoW9W6W6--------CalmSE3W3--CalmSE4CalmS4SW7SW7SW9
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2 days agoSW10SW12W8--------NE5----N4CalmCalm--S3--3SW7W10W7--W8
G17
6W8

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Louisville, KY (20,4,5,8)
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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.