Wednesday, April25, 2018

Marine Weather and Tides
Florence, AL

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:04AMSunset 7:32PM Wednesday April 25, 2018 1:44 AM CDT (06:44 UTC) Moonrise 3:14PMMoonset 3:46AM Illumination 75% 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 Florence, AL
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location: 34.83, -87.67     debug

Area Discussion for - Huntsville, AL
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Fxus64 khun 250533
area forecast discussion
national weather service huntsville al
1233 am cdt Wed apr 25 2018

For 06z tafs.

Near term (tonight)
issued at 800 pm cdt Tue apr 24 2018
latest radar trends showers a more widespread area of light to
moderate rainfall over moore county in tennessee extending northwest
into the lewisburg area of tennessee. This activity is moving
southeast across lincoln, moore, and western franklin counties.

Further southeast and west of this activity, more isolated to widely
scattered showers are occurring. Newest mesoscale models are picking
up on this activity better than previous runs and keep a showers
moving southeast into jackson county alabama through 10 or 11 pm.

This looks reasonable based on a bit more of a southerly push of
forcing with the broad upper low to our northeast seen in satellite
imagery. Thus have increased chances of precipitation east of a line
from fayetteville to hytop, al significantly through 11 pm. As the
upper low pushes more to the east around midnight, believe rain
chances will die out quickly. Although winds should stay between 5
and 10 mph with some higher gusts this evening, some patchy fog is
possible after midnight. This may be the case especially in
northwestern alabama which should see more clearing and in wind
sheltered locations. Winds should keep it from becoming dense though.

Based on expected combination of cloud cover and winds, raised low
temperatures a bit into the mid 50s in north central alabama. Cooler
lows in the lower 50s look reasonable in northwest alabama and in the
fort payne area.

Short term (Wednesday through Thursday night)
issued at 202 pm cdt Tue apr 24 2018
for Wednesday, there should be a break in the shower activity as the
tn valley experiences shortwave ridging. Somewhat warmer daytime
highs will occur with upper 60s to low 70s expected. Meanwhile, a
shortwave trough currently moving across the intermountain west and
central plains will be moving southeast. As it does so, the trough
becomes positively tilted with the northern flank of it becoming
sheared. The effect of the shearing may bring additional cloud cover
southward on Wednesday but precipitation should hold off until later
Wednesday afternoon as a strengthening LLJ ahead of this shortwave
sends warmer and saturated air northeast. Then, have included a
gradual increase in pops starting over the NW zones initially, but as
the trough tracks further south will see the gradient in pops
occurring more from south to north as precipitation spreads
northward. Forecast soundings and plan view depiction is showing a
low-level to mid-level cold pool developing on Thursday as that
shortwave trough moves closer. This increase in low-level lapse rates
will increase conditional instability. This along with the strong
forcing could cause thunderstorm development especially on Thursday
afternoon and south of the tn river. There may also be small hail and
gusty winds up to 30 mph given the combination of low freezing
layers and potential pulse like deep convective updrafts. As a
result, have added isolated thunderstorms for that area generally
south of the tn river and also increased pops areawide. This
shortwave trough should then move quickly off to the northeast
bringing an end to storm activity and shower activity on Thursday

Long term (Friday through Monday)
issued at 202 pm cdt Tue apr 24 2018
the only precipitation chance during the extended period will be on
Friday, and it is an uncertain one given model differences. That
being how far south the next upper shortwaves digs, with resultant
-divq fields. With such displacement of the northern stream, suspect
that the ECMWF is closer to reality. However, for consistency sake,
will keep a 20 pop going (near suggested blended guidance).

After this, synoptics favor a welcome dry and warm period through
the weekend into early next week with northwesterly 5h flow through
Sunday, before a high amplitude ridge shifts east into the upper ms
valley into the tn valley. At the surface, a 1030mb high shifts off
the mid atlantic coastline on Monday, with a corresponding 8h high
off the carolinas. This will produce a modest southerly flow and
increase thickness values to support highs well into the 70s and
possibly lower 80s. Lead shortwaves ejecting from next trof advancing
into the rockies may arrive by late in day 7 (night) period into day
8, but will keep rain chances out through Monday night until this
becomes more certain.

Aviation (for the 06z tafs through 06z Wednesday night)
issued at 1233 am cdt Tue apr 24 2018
vfr CIGS should generally continue into the overnight hrs, although
can't rule out some brief MVFR CIGS around 1500-2000 ft in the 08-12z
time frame, given the abundant low level moisture in place. However,
do believe winds will stay up just enough to keep lower vis from
occurring. By 14z, lower cig heights around 2500 ft should become
established at the two main terminals, as sfc winds turn toward the
nnw near 10kt with higher gusts.VFR CIGS should then return around
20-22z at both airports, as CIGS lift into the 9-10k ft range.

Hun watches warnings advisories
Al... None.

Tn... None.

Near term... Ktw
short term... Sl.77
long term... 17
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 mi52 minWNW 610.00 miOvercast59°F54°F83%1015.3 hPa

Wind History from MSL (wind in knots)
1 day agoS9S3SE5SE6SE7SE7S5S5W104S11SW7--W9NW8NW9N4N3N3CalmNW4NW5NW5NW3
2 days agoSE8SE7E7E6SE4E9E9E9E9SE14SE11SE11

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 Midwest    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.
target = "new">Link to Loop

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.