Thursday, January24, 2019

Marine Weather and Tides
Florence, AL

Version 3.4
What's New / NOTES
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 6:52AMSunset 5:12PM Thursday January 24, 2019 1:17 AM CST (07:17 UTC) Moonrise 10:28PMMoonset 10:34AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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 Florence, AL
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location: 34.83, -87.67     debug

Area Discussion for - Huntsville, AL
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Fxus64 khun 240522
area forecast discussion
national weather service huntsville al
1122 pm cst Wed jan 23 2019

For 06z tafs.

Near term (tonight)
issued at 1006 pm cst Wed jan 23 2019
cloudy conditions continue across northern alabama and southern
middle tennessee at this time, with very light scattered showers
continuing over northern alabama. One to two inches primarily has
fallen so far (with isolated locations seeing amounts between 2.5
and 3 inches). This has pushed area creeks and streams to near
bankfull or into minor flooding conditions. An areal flood warning
remains in effect through 11:30 pm for locations east of i-65.

Northwest winds 10 to 15 mph with higher gusts to around 20 mph will
remain possible behind the front through midnight, before becoming
lighter. Very little additional rainfall is expected. Freezing
temperatures are well behind the front back into western tennessee
and eastern arkansas. Based on current movement of the front and new
guidance, believe that precipitation will exit the area before
temperatrues drop to near or slightly below freezing. West of i-65,
this will be a bit earlier around 3 or 4 am. Further east, this looks
to occur around 6 or 7 am. Expect winds to evaporate most of the
rainfall by daybreak on area roadways, but shaded sheltered locations
could see some slick spots develop due to the formation of black
ice. This window for black ice should be brief, as temperatures warm
above freezing around 9 or 10 am.

Short term (Thursday through Friday night)
issued at 315 pm cst Wed jan 23 2019
a cold start to Thursday with temps in the upper 20s to lower 30s and
wind chills in the teens to lower 20s. The low cloud deck will
gradually clear through the day as drier air moves in. High pressure
situated along the gulf coast Thursday should help to moderate temps
a bit and limit the caa, which allow highs tomorrow to warm into the
low to mid 40s. However, any sense of a warm up will be brief, as a
broad and deep trough covers much of the eastern half of the us.

Multiple waves moving along the southern fringe of this deeper trough
will push a dry but strong cold front through the area. Expect temps
to plummet Thursday night into Friday with overnight lows in the low
to mid 20s. Even though the bulk of the colder air remains bottled
up over the great lakes we are still forecasting afternoon highs on
Friday in the mid 30s. Models have trended drier with the shortwave
moving over the area on Friday. At this point even though we will
have some lift, don't believe we'll have enough moisture around to
allow any precip to fall. Top down analysis would suggest that if
anything were to fall it would probably end up as a few flurries.

High pressure moves over the area Friday night into Saturday and
should result in a few more degrees of cooling with overnight lows in
the lows 20s.

Long term (Saturday through Tuesday)
issued at 315 pm cst Wed jan 23 2019
the long term will be dominated by a rather expansive longwave trough
that should be covering much of us east of the rockies. The tn valley
will be on the southern edge of this trough and with a surface high
moving along the gulf coast winds over the weekend become more
southerly in nature. This should allow highs to rebound into the 40s
for Saturday and close to the 50s for Sunday. Models are differing on
whether a quick moving shortwave will bring any precip on Sunday. The
ecmwf is the only model still holding onto this idea and because of
this have kept pops below 15 percent. The initial broad longwave
trough kicks to the east but models are trying to suggest a stronger
and potentially deeper longwave trough developing next week. As this
feature digs south on Monday it will trigger warm advection and temps
should jump into the mid 50s for highs.

There remain differences in the timing of this feature as it moves
into the area on Tuesday. Neither the GFS or ECMWF have shown very
good run to run consistency with the ECMWF pushing a front through
the area Tuesday morning. The GFS on the other hand has the front
arriving during the afternoon hours. The concern is that both models
show very strong cold air advection occurring and the co-location of
this colder air and precip could lead to some possible wintry precip
on Tuesday. The ECMWF is a bit more amplified with the trough and
indicates a stronger push of colder air and would lead to slightly
higher probability of wintry precip. However, the GFS remains a bit
flatter and keeps much of the coldest air to our north, which would
limit winter precip chances. Looking at ensemble data doesn't shed
any better light on what will occur as there is a good deal of spread
in the guidance. So, have tried to error on the uncertain side and
kept pops and any wintry precip on the lower side. This will need to
be monitored though. Way too early to talk about any accumulations
if we do see any wintry precip.

Once the front and colder air move through Tuesday expect below
normal temperatures for the rest of the week.

Aviation (for the 06z tafs through 06z Thursday night)
issued at 1114 pm cst Wed jan 23 2019
MVFR cig and vsbys will continue near and behind a departing cold
front through 09z at kmsl and 10z at khsv. Winds should keep fog
from forming towards daybreak at both terminals. Then expect CIGS to
become higher and climb to between 1000 and 3000 feet through 14z or
15z based on satellite trends. Clouds should then scatter out asVFR
conditions return and continue through the remainder of the forecast

Hun watches warnings advisories
Al... None.

Tn... None.

Near term... Ktw
short term... Stumpf
long term... Stumpf
aviation... Ktw
for more information please visit our website
at weather.Gov huntsville.

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Muscle Shoals, North West Alabama Regional Airport, AL6 mi25 minNW 10 G 198.00 miLight Snow35°F30°F85%1013.3 hPa

Wind History from MSL (wind in knots)
Last 24hrSE19
1 day agoE6E5E4E5SE5SE7SE9SE13SE15
2 days agoNE10NE7NE6E5NE5NE8NE8E12E12E10SE9E7SE6SE10E7E6E6E5E6E5E8SE5E6E7

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Huntsville, AL (2,6,7,8)
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Ground Weather Radar Station Northern Alabama
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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 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 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.