Tuesday, September22, 2020
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Marine Weather and Tides
Franklin, NC

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:17AMSunset 7:28PM Tuesday September 22, 2020 12:40 AM EDT (04:40 UTC) Moonrise 12:16PMMoonset 10:26PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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 Franklin, NC
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location: 35.1, -83.39     debug


Area Discussion for - Greenville-Spartanburg, SC
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FXUS62 KGSP 220240 AFDGSP

Area Forecast Discussion National Weather Service Greenville-Spartanburg SC 1040 PM EDT Mon Sep 21 2020

SYNOPSIS. Cool and dry high pressure will continue to build south over the region through Tuesday. The high will then weaken and shift south and east, allowing temperatures to gradually warm to near normal by the end of the week. Rain chances will be on the increase as well late in the week.

NEAR TERM /THROUGH TUESDAY/. As of 1036 PM Monday: The cu field that moved across the Charlotte metro area early this evening failed to dissipate at sunset, and instead has morphed into a blob of stratocu trapped under the subsidence inversion that is being advected westward toward the Blue Ridge Escarpment. Chances are increasing that once this moisture reaches the Blue Ridge, we will contend with it for the rest of the night. Temps were in relatively good shape for now, but the cloud cover will affect low temps if it hangs around.

Otherwise, anomalously strong high pressure remains over New England, maintaining a breezy northeast flow into the CWA. The high looks to weaken and shift southward tonight as it comes between a trough crossing Ontario and Hurricane Teddy south of Nova Scotia. The result will be weaker winds in the PBL and more of our CWA decoupling nocturnally. Cooler min temps can be expected overall, and some patchy high-elevation frost is fcst particularly in light of the reduced wind. It is not expected to be widespread enough for an advisory. Pleasant and dry weather will continue through Tuesday, with highs beginning to climb back up slightly under the modifying air mass.

SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/. As of 215 PM EDT Monday: The cool and dry sfc high pressure will continue to weaken and begin to shift east Tuesday night thru Wednesday, as a baggy upper trough combines with the remnants of TC Beta to our west. Wednesday looks like the last completely dry day of the week, with some increasing cloudiness thru the day. Temps continuing a gradual warming trend, but still below normal.

Wednesday night thru Thursday, moisture begins to increase as deep- layer southerly flow develops. Guidance still wants to bring some light showers in the extreme western zones by daybreak Thursday, but look overdone per dry low-levels in the fcst sndgs. Showers should begin to ramp up in at least the western half of the FA on Thursday, This along with thickening clouds should result in temps being a category or so cooler than Wednesday. But lows will be near normal.

LONG TERM /THURSDAY NIGHT THROUGH MONDAY/. As of 230 PM EDT Monday: Confidence continues to increase that relatively unsettled weather will be in store for the region thru most of the medium range. A split upper flow regime sets up across the eastern CONUS, with a slow-moving southern stream trough crossing the Ohio Valley Friday. Another southern stream trough deepens over TX on Saturday and drifts NEWD thru Sunday, as a northern stream trough digs into the Upper Midwest. The 12Z GFS and ECMWF disagree on the details, and the EC has had a swath of heavy QPF across some portion of the region over the last few runs. But for now, confidence in an excessive rain/flood threat still looks low. While the remnants of Beta will enhance the moisture, PWATs will generally be around 1.5-1.75"(around +2 SD anomaly). An in-situ wedge may form by early friday and persist thru most of the weekend, until a stronger cold front pushes in from the west. And the better instability may remain south and keep the heavy rain threat south of the area. In any case, max temps will remain near to slightly below normal, while mins will be above normal under plenty of clouds. PoPs are mainly in the high-end chc to likely range for now, due to uncertainty on timing periods of greatest chcs for rainfall.

AVIATION /03Z TUESDAY THROUGH SATURDAY/. At KCLT and elsewhere: Other than the possibility of a fog/stratus restriction at KAVL around daybreak, conditions should be VFR through the period. Still a few gusts out there at sunset, and a few cu on the east side of Charlotte, but both should go away in the next hour. Clear sky and light NE to N wind overnight. Think at least an MVFR restriction is a good bet at KAVL in the pre-dawn hours and cannot rule out the VLIFR seen in the guidance, but confidence is only high enough to go temporary IFR around daybreak. Wind will be light and variable Tuesday morning as high pressure settles in. The guidance suggests bringing the wind direction around to SW in the afternoon in most places, except KCLT, which may remain light WNW. Some cirrus should invade from the west late in the day.

Outlook: VFR conditions expected thru at least Wednesday, with the exception of the typical fog/stratus risk near KAVL around daybreak. Confidence is increasing that the remnants of Tropical Storm Beta could bring precipitation and restrictions later in the week.

Confidence Table .

02-08Z 08-14Z 14-20Z 20-00Z KCLT High 100% High 100% High 100% High 100% KGSP High 100% High 100% High 100% High 100% KAVL High 100% Med 66% High 100% High 100% KHKY High 100% High 100% High 100% High 100% KGMU High 100% High 100% High 100% High 100% KAND High 100% High 100% High 100% High 100%

The percentage reflects the number of guidance members agreeing with the scheduled TAF issuance flight rule category. Complete hourly experimental aviation forecast consistency tables are available at the following link:

www.weather.gov/gsp/aviation

CLIMATE. RECORDS FOR 09-21

MAX TEMPERATURE MIN TEMPERATURE STATION HIGH LOW HIGH LOW ------- ---------- ---------- ---------- ---------- KAVL 91 1931 53 1918 68 1978 38 1897 KCLT 97 1895 58 1897 74 1925 43 1918 KGSP 94 1940 63 1943 73 1925 43 1901


RECORDS FOR 09-22

MAX TEMPERATURE MIN TEMPERATURE STATION HIGH LOW HIGH LOW ------- ---------- ---------- ---------- ---------- KAVL 91 1931 61 1913 67 1992 35 1918 1926 KCLT 98 1895 54 1897 74 1931 43 1918 KGSP 95 1940 62 1897 73 1931 40 1983 1931 1913

GSP WATCHES/WARNINGS/ADVISORIES. GA . None. NC . None. SC . None.

SYNOPSIS . RWH NEAR TERM . PM/Wimberley SHORT TERM . ARK LONG TERM . ARK AVIATION . PM CLIMATE .


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Macon County Airport, NC9 mi46 minN 010.00 miFair45°F43°F97%1029.8 hPa

Link to 5 minute data for K1A5

Wind History from 1A5 (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW4CalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3SE4S4CalmS3CalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Greer, SC
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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 numerous 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.