Marine Weather and Tides
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 6:50AM||Sunset 6:58PM||Sunday March 18, 2018 12:27 PM CDT (17:27 UTC)||Moonrise 7:43AM||Moonset 8:10PM||Illumination 4%|
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|GMZ635 Western Choctawhatchee Bay-eastern Choctawhatchee Bay- 918 Am Cdt Sun Mar 18 2018 |
Rest of today..Southwest winds 3 to 8 knots becoming south 8 to 13 knots. Waves less than 1 foot. Areas of fog late in the morning. Slight chance of showers and Thunderstorms.
Tonight..South winds 5 to 10 knots becoming southwest 8 to 13 knots. Waves less than 1 foot. Chance of showers and Thunderstorms in the evening, then showers and Thunderstorms likely after midnight.
Monday..Southwest winds 8 to 13 knots increasing to 10 to 15 knots. Waves around 1 foot. Showers and Thunderstorms likely.
Monday night..Southwest winds 10 to 15 knots becoming west. Waves around 1 foot. Chance of showers and Thunderstorms.
Tuesday..West winds 13 to 18 knots increasing to 18 to 23 knots. Waves around 1 foot.
Tuesday night..Northwest winds 18 to 23 knots diminishing to 15 to 20 knots. Waves around 1 foot.
Wednesday..Northwest winds 13 to 18 knots. Waves less than 1 foot.
Wednesday night..North winds 10 to 15 knots. Waves around 1 foot.
Thursday..North winds 8 to 13 knots. Waves less than 1 foot.
Thursday night..North winds 5 to 10 knots. Waves less than 1 foot.
|GMZ600 Synopsis For Pascagoula Ms To Okaloosa Walton County Line Fl Out 60 Nm Including Major Area Bays And Sounds- 918 Am Cdt Sun Mar 18 2018 |
Synopsis..A predominantly light to occasionally moderate onshore flow will continue over the coastal waters through late Monday afternoon, then begin to increase Monday night and shift to offshore by early Tuesday as a cold front moves east across the marine area. A strong northwesterly offshore flow and high seas is expected Tuesday through early Wednesday. Weaker offshore flow will then continue through late week, with subsiding seas.
7 Day Forecast for Marine Location Near Ponce de Leon, FLHourly EDIT Help
Area Discussion for -  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 ktae 181521|
area forecast discussion
national weather service tallahassee fl
1121 am edt Sun mar 18 2018
Showers and thunderstorms are expected to increase in coverage
across the region early this afternoon. Showers originating from
the sea-breeze will likely preclude the convective complex current
moving across la ms, yielding brief light showers across the
region. While instability will again be limited by widespread
cloud cover across the tri-state region, the aforementioned
complex will likely be sustained by the magnitude of shear (40 to
50 kts bulk shear) as it moves eastward into the southeast later
today, thus keeping shower and thunderstorm chances widespread
for this afternoon. The severe weather threat associated with
this initial wave will remain largely contingent any mesoscale
interactions (differential heating zones, sea-breeze boundary
interactions, cell mergers) given the limited instability
available. Given the available shear profile and relatively poor
lapse-rates, the main threat with this initial wave through this
evening will be damaging wind gusts. Afternoon highs will rise
into the low 80s.
The latest hi-res model runs are hinting at a second round of
convection developing along the warm front late this
evening overnight behind the initial wave of showers and storms.
These storms will also pose a severe threat, as discussed in the
short term period below.
Prev discussion [645 am edt]
Near term [through today]
Areas of low clouds and fog will prevail through this morning as the
boundary layer remains nearly saturated under moist southwesterly
flow. A front currently stretching from texas northeastward into
eastern tennessee and north carolina will sag southward this morning
and become quasi-stationary near our northern areas through the
afternoon and early evening, providing forcing for scattered showers
and thunderstorms. Mostly cloudy to overcast skies will persist
through the afternoon, which will limit instability throughout this
time. However, models suggest that MUCAPE values will range from 500
to 1500 j kg across most of our inland areas during the afternoon
and early evening. Effective bulk shear will be strong throughout
this period with values near 50 kts across our area. Low-level shear
and helicity values appear to be fairly weak during this time.
Latest cam guidance shows a cluster of showers and embedded
thunderstorms moving into our western regions during the afternoon,
spreading into SW georgia by the early evening.
The lack of strong instability could limit severe potential across
our area during this time, despite strong bulk shear values. Also,
weak mid-level lapse rates will be present across our area during
the afternoon and early evening, further limiting the chances of
severe weather. The SPC has a slight risk of severe weather across
our area for day 1, but due to the aforementioned setup, most of the
threat should come later tonight and will be described in the short
term discussion. Persistent southwesterly flow will result in warm
temperatures again today, with highs reaching the upper 70s and
lower 80s across our inland areas and mid 70s along the gulf
Short term [tonight through Tuesday]
Multiple waves of severe weather will be possible during the short
term period, though there is some degree of uncertainty in the
early portion of the forecast. Overall, the severe parameters are
quite favorable, but after the initial warm front lifts north and
prior to the passage of a cold front on Tuesday, a well defined
forcing mechanism is lacking, which complicates overall event
timing with the forecast for Monday.
At the start of the period, a warm frontal boundary will be
located just north of the florida border and rapidly retreating
northward. After day time heating, this boundary should serve as a
focus for shower and thunderstorm development early in the
evening. It's at this time with deep layer shear exceeding 55kt
and modest instability that a few severe storms are possible,
generally with damaging winds and large hail the primary threats.
However, prior to 12z Monday, low level shear is supportive for
tornadoes - being sufficiently curved, that storms interacting
with the warm front would have a non-zero tornado potential. Even
after the boundary has cleared to the north, several pieces of
guidance suggests storms will continue to develop across the
region, and with favorable instability shear fields, expect the
severe threat to continue throughout the overnight hours.
By Monday, much of the forecast is dependent on how much
convective activity occurred during the overnight period, as this
could delay any storm development on Monday. The general consensus
of the guidance is that there will be some breaks in the cloud
cover mid-morning which should allow for instability to increase
considerably intermixed with deep layer shear values in excess of
55 kts. As the airmass destabilizes significantly into the
afternoon hours on Monday, numerous thunderstorms should develop,
likely becoming severe quickly. All severe hazards are possible
with this activity on Monday afternoon and evening.
By Monday evening, the region should be in a lull between the
departing storms from the afternoon and an approaching cold front
that at 00z tues is anticipated to be back across southeastern
louisiana. Model soundings show mid level lapse rates steepening
considerably after 00z tues and though thermal profiles show
diminishing surface-based instability after 00z, this looks as
though it will be overcome by the time the surface cold front
approaches the forecast area after 06z tues. Thus, with sufficient|
instability, forcing, and increasing shear (possibly in excess of
60 kt), expect a line of severe thunderstorms to organize along
the cold front and progress across the forecast area late Monday
night and through the morning hours on Tuesday. The dominant
severe weather threat at this time would be damaging destructive
straight line winds.
1. Multiple waves of severe weather are possible across the region
starting this evening and continuing through Tuesday morning.
2. The severe threat on Sunday evening and Sunday night will
initially be more focused across southeastern alabama and
southwestern georgia, before spreading into the rest of the
region prior to daybreak Monday.
3. Monday's storms are expected to be region-wide and will be
capable of producing all severe hazards - damaging winds, large
hail, and isolated tornadoes.
4. A strong cold front will move into the region Monday night. A
line of severe storms will likely develop along the cold front and
move quickly across the region late Monday night and into Tuesday
morning. The dominant threat with these storms are
damaging destructive straight line winds.
Long term [Tuesday night through Sunday]
Much more tranquil weather will arrive across the region by
Tuesday night and continue throughout the long term period. Cooler
and drier air will overspread the region in the wake of a cold
front Tuesday night and an area of high pressure will build over
the region by Thursday. Model guidance seems to have come into
better agreement on the last couple of cycles that though
temperatures will be below normal on Wednesday Thursday, the
overnight lows should remain a few degrees above freezing.
By Friday, high pressure shifts east of the region and the warmup
will begin with temperatures by Saturday and for the remainder of
the weekend a few degrees above normal. Precipitation is not
currently anticipated within the long term period.
Aviation [through 12z Monday]
Low clouds persist at all terminals this morning with some areas
of ifr lifr cigs, and some patchy fog over tlh and ecp. MVFR cigs
could remain in place through late morning before becomingVFR in
the afternoon. Showers and thunderstorms will move into our area
from west to east during the late afternoon and evening, with
periods of reduced visibility possible.
After generally light winds and low seas today, winds will begin
to increase on Monday ahead of an approaching frontal system.
Winds will reach cautionary levels late Monday and then advisory
levels by Tuesday morning. Gale conditions are possible for a
portion of Tuesday afternoon and evening in the wake of the cold
front. Winds will finally drop below advisory levels on Wednesday
Moist conditions with scattered showers and thunderstorms will
prevail through the next couple of days. As a result, no fire
weather concerns are anticipated despite high dispersion values
possible on Monday.
Average rainfall with this system is expected to be in the 1-3
inch range with isolated heavier totals possible. Because the
event will be spread over a couple of days, widespread flooding
concerns are not anticipated. However, some localized flooding is
possible if some of the stronger storms train over urbanized areas
prone to flooding, especially on Sunday night and into Monday.
Spotter information statement
Spotter activation is requested. Spotters should safely report
significant weather conditions and or damage by calling the office or
tweeting us @nwstallahassee.
Preliminary point temps pops
Tallahassee 80 66 80 66 79 70 80 70 60 30
panama city 74 68 76 64 73 60 70 60 50 10
dothan 78 65 80 61 75 80 90 70 50 10
albany 79 64 80 62 77 50 90 70 60 20
valdosta 81 65 77 68 79 50 90 70 60 50
cross city 80 63 76 68 77 20 50 70 60 70
apalachicola 75 68 75 67 75 40 60 60 60 30
Tae watches warnings advisories
near term... Lahr
short term... Godsey
long term... Godsey
fire weather... Lahr
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|PCBF1||35 mi||39 min||SSE 4.1 G 4.1||70°F||66°F||1014.9 hPa|
|PACF1 - 8729108 - Panama City, FL||42 mi||39 min||SSW 5.1 G 5.1||74°F||66°F||1015 hPa|
|PCLF1 - 8729840 - Pensacola, FL||71 mi||45 min||S 1.9 G 4.1||72°F||66°F||1014.7 hPa|
|APXF1 - Apalachicola Reserve, FL||85 mi||102 min||S 6||73°F||69°F|
Wind History for Panama City, FL(wind in knots) EDIT (on/off)  Help
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Wind History from 1J0 (wind in knots)
|1 day ago|
|2 days ago|
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|West Bay Creek |
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Sun -- 12:52 AM CDT 0.82 feet High Tide
Sun -- 06:49 AM CDT Sunrise
Sun -- 07:09 AM CDT 0.37 feet Low Tide
Sun -- 07:42 AM CDT Moonrise
Sun -- 01:19 PM CDT 0.61 feet High Tide
Sun -- 06:53 PM CDT Sunset
Sun -- 06:57 PM CDT 0.29 feet Low Tide
Sun -- 08:10 PM CDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
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|Lynn Haven |
Click for Map
Sun -- 12:31 AM CDT 0.80 feet High Tide
Sun -- 06:48 AM CDT Sunrise
Sun -- 06:55 AM CDT 0.36 feet Low Tide
Sun -- 07:41 AM CDT Moonrise
Sun -- 12:58 PM CDT 0.59 feet High Tide
Sun -- 06:43 PM CDT 0.28 feet Low Tide
Sun -- 06:52 PM CDT Sunset
Sun -- 08:09 PM CDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
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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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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.