Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Florence, AL

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:40AMSunset 7:10PM Tuesday March 28, 2017 6:27 PM CDT (23:27 UTC) Moonrise 7:15AMMoonset 8:00PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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 282320
afdhun
area forecast discussion
national weather service huntsville al
620 pm cdt Tue mar 28 2017

Update
For 00z tafs.

Near term (tonight)
issued at 323 pm cdt Tue mar 28 2017
after a wet and stormy start to the work week yesterday, much calmer
weather prevailed across the region this afternoon. A frontal
boundary that moved southward across the area last night has made
it to north of the i-20 corridor. It's position can be delineated
nicely from new goes-16 visible data, indicating slightly
drier/cooler air up this way compared to south of the boundary.

Isolated to scattered showers have formed near and south of the
boundary. So far, the showers have remained more tame than
yesterday's strong and severe convection - with no lightning noted so
far.

The surface low that brought the stormy weather yesterday has made
it to the mid atlantic region, pushed eastward by high pressure
building southward from the upper mississippi valley. This high
bringing slightly cooler air and light winds tonight, along with
plenty of residual moisture from the showers of yesterday will create
patchy fog development tonight. Given that clouds will also be on
the increase, have not gone with area of fog and/or widespread dense
fog. Lows will be in the low/mid 50s - a tad cooler than this
morning.

Short term (Wednesday through Thursday)
issued at 323 pm cdt Tue mar 28 2017
any fog that's present at daybreak should quickly burn off shortly
after sunrise. Light/variable winds in the morning should become
southeasterly as the surface high moves towards the east coast. The
high moving to our east and a return southerly flow will bring the
frontal boundary south of the area back as a warm front. The return
of this front could bring an isolated shower and/or thunderstorm
Wednesday afternoon.

Better rain chances are in the forecast on Thursday/Thursday night
as a system currently affecting the southern high plains heads
eastward. Model output from the various model suites overall was in
similar agreement, but of course disagreements in the details. The
nam/gfs were a bit deeper/faster than the ecmwf/canadian. Also, the
models were picking up on possible development along gulf coast,
which would intercept some of the moisture/ instability from the
gulf. This would tend to temper overall storm strength during
Thursday. Also, the fact the heaviest rains comes through after dusk
Thursday would encounter a cooler, slightly more stable environment
which helps keep convection weaker too. Convection during Friday
should wind down from west to east as this next system's cold front
moves across the tennessee valley.

High temperatures should approach 80 tomorrow, and mid/upper 70s on
Thursday as the showers/storms commence. Friday will trend cooler
with highs around 70.

Long term (Thursday night through Monday)
issued at 323 pm cdt Tue mar 28 2017
we start the long-term period with a system exiting the area to the
east. A few lingering light showers might be possible across the
eastern half of the area Friday evening. But expect those to be very
isolated. Drier air quickly filters into the area Friday night and
lows could dip into the upper 40s by Saturday morning. An upper
level ridge builds over the tn valley on Saturday and we can expect
a warming trend in temps both Saturday and Sunday. Highs on Sunday
could approach the 80 degree mark.

While we are sitting high and dry over the weekend a system will be
impacting the desert southwest. This system begins to shift east on
Sunday into the tx panhandle. However, there is some disagreement
between the latest gfs/ecmwf in terms of just how quickly this
system kicks eastward. The 500mb ensemble means from the
gfs/cmc/naefs all seem to have a similar handle on the timing, which
would line up a bit more with the 12z gfs. The ECMWF might be under
doing the influence of the departing ridge. In either case though,
it appears that as the system shifts out of the desert SW and into
southern us and begins to take on a slight negative tilt, that a mcs
could develop over eastern tx and ride along the gulf coast. The
strongest jet does remain to our south and would tend to point
towards the MCS along the gulf idea. This would likely cut us off
from the deeper moisture and limit the overall strong/severe
thunderstorm threat. But with the main upper level dynamics moving
over the area, thunderstorms are still likely as lapse rates do
steepen aloft but any instability would remain elevated. Due to the
timing differences though have gone with a blend in the guidance but
leaning a bit more towards the latest gfs.

Beyond early next week the forecast remains a bit uncertain and
potentially unsettled as we could see another one or two systems
move across the tn valley. Went with a blend of long-term guidance
with some model disagreements.

Aviation (for the 00z tafs through 00z Wednesday evening)
issued at 620 pm cdt Tue mar 28 2017
vfr conditons are expected at the kmsl and khsv terminals through the
next 6 hours, as winds become light and skies remain generally mostly
clear. An abundance of low level moisture, along with the clear skies
and light winds, will give way to MVFR fog development around 10z at
both terminals. Although guidance suggests MVFR CIGS as well early
Wednesday morning, confidence is not high enough to include with this
issuance. Visibilities, and low CIGS should they develop, will
improve after 14z, withVFR conditions expected through the remainder
of the period.

Hun watches/warnings/advisories
Al... None.

Tn... None.

Near term... Rsb
short term... Rsb
long term... Stumpf
aviation... 73
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 mi35 minN 310.00 miFair75°F55°F50%1014.3 hPa

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Last 24hrS8S6SE4SE7S5S4CalmS3CalmCalmNW4CalmW4NW4Calm3CalmS3SW4W3SW3--NW4N3
1 day agoS6SE5SE4SE5SE4SE5CalmCalmS4SW3SW6S9S9S6S6S9S12S10S15
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2 days agoS15S9SE12SE6SE4SE3SE6SE5S5S6S7S7S5S5S5S7SW9S12SW10S8SW12SW8S10SW10

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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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Huntsville, AL (19,4,5,8)
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Ground Weather Radar Station Northern Alabama
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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.