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Marine Weather and Tides
Version 3.4 |
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 6:05AM | Sunset 7:51PM | Friday April 26, 2019 4:21 AM EDT (08:21 UTC) | Moonrise 1:04AM | Moonset 10:52AM | Illumination 57% |  |
ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 344 Am Edt Fri Apr 26 2019
.gale watch in effect from this evening through Saturday afternoon...
Today..SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt this afternoon. Waves 2 ft or less, then around 3 ft this afternoon. A slight chance of tstms early this morning. Showers. A chance of tstms this afternoon.
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 15 to 20 kt with gusts up to 30 kt in the late evening and overnight. Waves 2 ft or less, then around 3 ft in the late evening and overnight. Showers with a chance of tstms early in the evening. A chance of showers in the late evening and early morning.
Sat..W winds 20 to 25 kt with gusts up to 35 kt. Waves 3 to 4 ft.
Sat night..W winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt late in the evening, then diminishing to 5 to 10 kt after midnight, becoming sw late. Waves around 3 ft early in the evening, then 2 ft or less.
Sun..S winds 10 to 15 kt, becoming W in the afternoon. Gusts up to 25 kt. Waves 2 ft or less.
Sun night..N winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 3 ft in the evening, then 2 ft or less.
Mon..NE winds 10 to 15 kt, becoming se in the afternoon. Waves 2 ft or less.
Mon night..S winds 5 to 10 kt. Waves 2 ft or less. A chance of showers.
Tue..SW winds 5 to 10 kt, becoming W in the afternoon. Waves 2 ft or less. A chance of showers.
Tue night..NE winds 5 to 10 kt. Waves 2 ft or less. A chance of showers. Winds and waves higher in and near tstms.
.gale watch in effect from this evening through Saturday afternoon...
Today..SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt this afternoon. Waves 2 ft or less, then around 3 ft this afternoon. A slight chance of tstms early this morning. Showers. A chance of tstms this afternoon.
Tonight..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 15 to 20 kt with gusts up to 30 kt in the late evening and overnight. Waves 2 ft or less, then around 3 ft in the late evening and overnight. Showers with a chance of tstms early in the evening. A chance of showers in the late evening and early morning.
Sat..W winds 20 to 25 kt with gusts up to 35 kt. Waves 3 to 4 ft.
Sat night..W winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt late in the evening, then diminishing to 5 to 10 kt after midnight, becoming sw late. Waves around 3 ft early in the evening, then 2 ft or less.
Sun..S winds 10 to 15 kt, becoming W in the afternoon. Gusts up to 25 kt. Waves 2 ft or less.
Sun night..N winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Waves around 3 ft in the evening, then 2 ft or less.
Mon..NE winds 10 to 15 kt, becoming se in the afternoon. Waves 2 ft or less.
Mon night..S winds 5 to 10 kt. Waves 2 ft or less. A chance of showers.
Tue..SW winds 5 to 10 kt, becoming W in the afternoon. Waves 2 ft or less. A chance of showers.
Tue night..NE winds 5 to 10 kt. Waves 2 ft or less. A chance of showers. Winds and waves higher in and near tstms.
ANZ400 344 Am Edt Fri Apr 26 2019
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. Low pressure will continue to track up the ohio valley toward the eastern great lakes this morning. A warm front will gradually lift northward and across our area through this morning. A strong cold front will then cross our region late this afternoon through this evening. Weak high pressure briefly moves in by late Saturday before the next low pressure system crosses the area west to east on Sunday. High pressure moves back in to start next week before the next system moves in next Tuesday. A frontal boundary looks to then stall in the general vicinity of the region through the remainder of next week as additional waves move through along it.
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. Low pressure will continue to track up the ohio valley toward the eastern great lakes this morning. A warm front will gradually lift northward and across our area through this morning. A strong cold front will then cross our region late this afternoon through this evening. Weak high pressure briefly moves in by late Saturday before the next low pressure system crosses the area west to east on Sunday. High pressure moves back in to start next week before the next system moves in next Tuesday. A frontal boundary looks to then stall in the general vicinity of the region through the remainder of next week as additional waves move through along it.
7 Day Forecast for Marine Location Near Millbourne borough, PA
Hourly EDIT Helplocation: 39.96, -75.18 debug
Area Discussion for - Philadelphia/Mount Holly, PA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kphi 260737 afdphi area forecast discussion national weather service mount holly nj 337 am edt Fri apr 26 2019 Synopsis Low pressure will continue to track up the ohio valley toward the eastern great lakes this morning. A warm front will gradually lift northward and across our area through this morning. A strong cold front will then cross our region late this afternoon through this evening. Weak high pressure briefly moves in by late Saturday before the next low pressure system crosses the area west to east on Sunday. High pressure moves back in to start next week before the next system moves in next Tuesday. A frontal boundary looks to then stall in the general vicinity of the region through the remainder of next week as additional waves move through along it. Near term through tonight Concern continues to increase for severe storms this afternoon and evening. A surface low in the midwest will continue northeastward today in advance of a southern-stream vort MAX that is beginning to phase with a digging northern-stream shortwave trough. Amplification and negative tilting will continue through the morning as the large- scale trough approaches the appalachians by midday. The mid-atlantic will be at the nose of a potent midlevel jet streak vort MAX this afternoon, with strongly difluent flow in the upper levels favorable for substantial large-scale ascent along and in advance of a surging cold front. A warm front will lift north through the northern mid- atlantic today, with the warm sector likely making it through about the southern two-thirds of the CWA or so by early afternoon. Latest convection-allowing model guidance is suggestive of an environment favorable for organized severe storms this afternoon. Forecast soundings indicate backing surface flow as the large-scale system and associated surface low to our northwest deepens within the warm sector this afternoon. Hodographs are strongly indicative of potential for rotating storms. Low-level storm-relative helicity of 200-300 j kg is not out of the question in advance of the cold front late this afternoon and this evening. In addition, several of the hi-res models develop decent mixed-layer based instability (with mitigating effects near the colder waters, as usual). The resulting cape shear parameter space is adequate for tornadic supercells, though the strong large-scale ascent may favor more of a quasi- linear convective system (qlcs) with embedded transient rotating storms. SPC has moved the slight risk northward to the philadelphia metro area. Timing of the strongest convection looks to be in the 5 to 10 pm time window. However, some of the hi-res guidance is indicating predecessor quasi-discrete storms developing in advance of the front qlcs during the afternoon. Should these develop, cannot rule out strong to severe storms with these either, given the favorable pre-frontal environment. Notably, some models depict little convection aside from the qlcs, so this threat is much more conditional. Storms will be capable of producing heavy rainfall as well, but the storms will be progressive. The flooding threat looks somewhat limited because of this, though should any training of storms occur, an isolated instance of flash flooding may occur. The threat looks too limited for a flash flood watch at this time. Meanwhile, there are several other issues to contend with today, including the showers moving through the area early this morning. Some lightning has occurred on the south side of the precipitation, where some marginal elevated instability has developed. Added slight chances of thunder to the forecast early this morning, generally from the i-276 i-195 corridors southward. Precipitation should mainly be in the 0.1 to 0.4 inch range, generally from stevensville to atlantic city northward, with this first batch. However, additional rounds of showers isolated storms may occur through the morning (as depicted by the hrrr NAM nest), so have maintained fairly high pops through the morning. Another question is just how far northward the warm front advances today, with the NAM more pessimistic than the gfs. The NAM tends to do better in these regimes, so have weighted the forecast position and resultant winds temperatures strongly toward this guidance today. This resulted in lowering MAX temps in the northern cwa considerably, which seems reasonable given potential for a few rounds of showers this morning anyway. Finally, after cold-frontal passage this evening, winds will switch to the west or northwest and become gusty. However, precipitation should quickly end, except for the far north where northwest-flow showers may linger through the night. Temperatures dew points will drop behind the front, but temps may stay somewhat elevated owing to the stronger winds. Kept the forecast close to continuity. Short term Saturday Main concern for Saturday is strong winds as the surface low deepening to our north develops a strong pressure gradient across the mid-atlantic during the day. The strongest winds should occur during the morning, when bufkit soundings indicate potential for gusts of 30 to 40 mph. Cannot rule out the need for an advisory, but the current projections look a little shy of criteria. Temperatures will be cool, as cold advection will take over across the area. Additionally, some stratocumulus may develop during the day as strong mixing occurs, especially in the northern cwa. With this in mind, kept the forecast on the cold side of consensus. Long term Saturday night through Thursday Saturday night through Monday... weak, transient surface ridge briefly moves in Saturday evening before moving off to the east overnight as the next low pressure system begins to approach from the west bringing increasing clouds and the chance of some showers by Sunday morning over eastern pa. This quick moving low will cut right across the heart of the cwa Sunday bringing a period of some rain and showers. Since the low will be quick moving with a relatively low amplitude upper level wave it won't be able to tap into a lot of moisture and instability so rain amounts won't be significant. Steadiest rain showers will be near and north of the track of the low over northern portions of the cwa along and north of the i-78 i-80 corridor. In fact areas south of philly may not see much at all in the way of precip. Highs will range from the upper 60s to mid 70s over the delmarva, SE pa and central, southern nj to the low to mid 50s over the southern poconos and NW nj. Also, as the low departs through the afternoon NW winds should become fairly gusty. Low pressure quickly departs Sunday night with high pressure then building in through most of Monday bringing fair weather with sunshine and seasonable temperatures to start the new week. Monday night through Thursday... in the big picture, the pattern looks to be dominated by an upper level ridge over the SE CONUS with an upper level trough much of |
central canada extending south toward the rocky mountain region. This will result in a continuing active weather pattern over the mid atlantic region as a deep layer W SW flow dominates bringing multiple disturbances through the region. In terms of the details, the next low pressure system looks to move through later Monday night into Tuesday as it cuts right across the area along a frontal boundary. This will bring another round of some rain and showers through the region with some thunderstorms possible by Tuesday afternoon over southern portions of the area over SE pa, the delmarva, and portions southern nj. Highs Tuesday look to generally be in the 70s except a bit cooler right along the immediate coast and over the southern poconos. Beyond this time, forecast confidence decreases as models begin to diverge. GFS brings in another system quickly on the heals of Tuesday's system for Wednesday while the ECMWF holds this system off until Thursday as it builds in a high briefly for Wednesday. In either case, main baroclinic zone looks to be persist in the general vicinity of the area so we keep in chance pops for showers through the remainder of the long range. Temperatures look to be around or above average for this time of year through the middle to end of next week. Aviation 07z Friday through Tuesday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Rest of tonight... Conditions slowly deteriorating to MVFR and possibly brief ifr, especially in areas of steadier showers. Winds will be light and somewhat erratic, but should generally favor an east or southeast direction. Moderate confidence. Friday morning... Lingering sub-vfr to the north of a warm front, with conditions expected to becomeVFR as the warm front moves northward. To the north of the front, winds will be predominantly easterly around 10 kts. To the south, a switch to south or even southwest with gusts to 20 kts may occur. Scattered showers should continue to the north of the front. The front's timing is very low confidence, but expect passage through ilg phl acy miv pne in the 14z to 17z time frame. Passage at rdg abe ttn is even less certain. Friday afternoon and evening... South to southwest winds should increase to 10 to 15 kts with higher gusts as the warm front continues slowly northward and or washes out, though this may be slow to occur at rdg abe ttn. Scattered showers storms may develop ahead of an approaching cold front, but the most widespread convection will be with the front itself. Conditions will quickly briefly deteriorate as a broken squall line moves though, with lightning and strong erratic gusts possible. A quick switch to west winds will occur as the squall line passes, with gusty winds continuing thereafter. Timing of the line of storms should be 21z to 00z from west to east, with quick improvement toVFR thereafter. Moderate confidence. Friday night...VFR with winds becoming northwest 10 to 15 kts with higher gusts. High confidence. Saturday...VFR with strong northwest winds 15 to 25 kts with gusts 30 to 35 kts possible. High confidence. Outlook... Saturday night...VFR. West-northwest winds diminishing to 10 knots or less and even light and variable late. Sunday... A period of MVFR or ifr conditions possible with some showers especially near and north of phl, thenVFR at night. Light and variable winds becoming southerly near 10 knots, then nw 10-15 with gusts 20-25 knots by late day into Sunday evening. Monday and Tuesday... MainlyVFR, however some showers are possible late Monday and Tuesday. East and southeast winds up to 10 knots Monday, then becoming west-southwest Tuesday. Marine Sub-advisory conditions are occurring on the waters at this time, but as a warm front lifts northward today, winds will become southerly and increase, likely nearing exceeding advisory criteria by this afternoon. Seas will also build to around above 5 feet late in the day. A small craft advisory is in effect for the atlantic waters from 1 to 6 pm today. Advisory conditions are not expected on delaware bay this afternoon. Occasional showers and isolated storms are expected today, with some erratic winds waves to be expected in their proximity. This evening, a cold front will move through the waters, with showers storms likely in its vicinity. Strong wind gusts are probable with the stronger storms. Winds will quickly switch to west or northwest behind the front (along with storms quickly departing), and models are indicating potential for some gale-force gusts overnight into Saturday morning. Have issued a gale watch for the waters for this time frame. Outlook... Saturday night... West to northwest winds continuing to diminish below SCA levels through Saturday evening with seas also continuing to subside below 5 feet. Sunday and Monday... Winds and seas may increase to small craft advisory criteria for a time late Sunday into Sunday night, otherwise the conditions should be below advisory criteria. Tuesday... The conditions are anticipated to be below small craft advisory criteria. Phi watches warnings advisories Pa... None. Nj... None. De... None. Md... None. Marine... Small craft advisory from 1 pm this afternoon to 6 pm edt Saturday for anz452>455. Small craft advisory from 4 pm this afternoon to 6 pm edt Saturday for anz450-451. Small craft advisory from 10 pm this evening to 6 pm edt Saturday for anz430-431. Synopsis... Fitzsimmons near term... Cms short term... Cms long term... Fitzsimmons aviation... Cms fitzsimmons marine... Cms fitzsimmons |
Weather Reporting Stations
EDIT (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 |
| PHBP1 - 8545240 - Philadelphia, PA | 3 mi | 34 min | 55°F | 58°F | 1008.7 hPa | |||
| BDSP1 | 6 mi | 34 min | 53°F | 60°F | 1009.5 hPa | |||
| MRCP1 - 8540433 - Marcus Hook, PA | 16 mi | 40 min | 56°F | 60°F | 1008.3 hPa | |||
| BDRN4 - 8539094 - Burlington, Delaware River, NJ | 18 mi | 46 min | ESE 4.1 G 4.1 | 54°F | 58°F | 1009.7 hPa | ||
| NBLP1 - 8548989 - Newbold, PA | 26 mi | 34 min | E 4.1 G 5.1 | 54°F | 59°F | 1010.3 hPa | ||
| DELD1 - 8551762 - Delaware City, DE | 34 mi | 40 min | NE 9.9 G 11 | 56°F | 60°F | 1007.8 hPa | ||
| RDYD1 - 8551910 - Reedy Point, DE | 35 mi | 40 min | 1007.3 hPa | |||||
| CHCM2 - 8573927 - Chesapeake City, MD | 45 mi | 40 min | E 8 G 9.9 | 56°F | 65°F | 1007.9 hPa | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 46 mi | 34 min | ENE 8.9 G 11 | 57°F | 63°F | 1007.7 hPa |
Wind History for Philadelphia, PA
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
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| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Philadelphia, Philadelphia International Airport, PA | 6 mi | 28 min | NE 5 | 8.00 mi | Light Rain | 54°F | 51°F | 90% | 1009 hPa |
| Philadelphia, Northeast Philadelphia Airport, PA | 12 mi | 28 min | E 4 | 5.00 mi | Light Rain Fog/Mist | 55°F | 51°F | 87% | 1010 hPa |
| Philadelphia - Wings Field Airport, PA | 13 mi | 47 min | N 0 | 5.00 mi | Mostly Cloudy | 52°F | 51°F | 100% | 1010.8 hPa |
| Mount Holly, South Jersey Regional Airport, NJ | 18 mi | 28 min | N 4 | 4.00 mi | Rain Fog/Mist | 52°F | 50°F | 93% | 1009.5 hPa |
Wind History from PHL (wind in knots)
| 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | |
| Last 24hr | NE | NE | NE | E | NE | NE | NE | SE | Calm | SE | SE | E | NE | E | E | E | E | E | E | E | E | NE | N | NE |
| 1 day ago | W | W | NW | W | NW | W | NW | W | NW G19 | W | W G21 | W | W G20 | W | W | W | NW | W | W | W | W | S | N | NE |
| 2 days ago | SW | SW | W | W | NW | S | NW | SW | W | SW | SW | SW | SW | SW | S | S | S | S | S | SW | S | SW | SW | SW |
Tide / Current Tables for Market Street Bridge, Schuylkill River, Pennsylvania
EDIT Weekend mode (on/off) (on/off) Help One Week of DataMarket Street Bridge
Click for Map
Fri -- 02:03 AM EDT Moonrise
Fri -- 02:10 AM EDT 0.83 feet Low Tide
Fri -- 06:07 AM EDT Sunrise
Fri -- 07:31 AM EDT 6.07 feet High Tide
Fri -- 11:52 AM EDT Moonset
Fri -- 02:54 PM EDT 0.64 feet Low Tide
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:50 PM EDT Sunset
Fri -- 08:11 PM EDT 5.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:03 AM EDT Moonrise
Fri -- 02:10 AM EDT 0.83 feet Low Tide
Fri -- 06:07 AM EDT Sunrise
Fri -- 07:31 AM EDT 6.07 feet High Tide
Fri -- 11:52 AM EDT Moonset
Fri -- 02:54 PM EDT 0.64 feet Low Tide
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:50 PM EDT Sunset
Fri -- 08:11 PM EDT 5.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 1.9 | 1.3 | 0.8 | 1.3 | 2.9 | 4.4 | 5.3 | 6 | 6 | 5.3 | 4.4 | 3.4 | 2.6 | 1.8 | 1 | 0.6 | 1.4 | 2.9 | 3.9 | 4.8 | 5.4 | 5.2 | 4.4 | 3.4 |
Tide / Current Tables for Philadelphia, Pennsylvania Current
EDIT (on/off) Help One Week of DataPhiladelphia
Click for Map
Fri -- 02:03 AM EDT Moonrise
Fri -- 02:38 AM EDT 0.00 knots Slack
Fri -- 04:24 AM EDT 1.34 knots Max Flood
Fri -- 06:07 AM EDT Sunrise
Fri -- 07:55 AM EDT -0.00 knots Slack
Fri -- 10:55 AM EDT -1.46 knots Max Ebb
Fri -- 11:52 AM EDT Moonset
Fri -- 03:39 PM EDT 0.00 knots Slack
Fri -- 05:07 PM EDT 0.85 knots Max Flood
Fri -- 06:17 PM EDT 0.74 knots Min Flood
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:10 PM EDT 0.79 knots Max Flood
Fri -- 07:49 PM EDT Sunset
Fri -- 08:43 PM EDT -0.00 knots Slack
Fri -- 11:38 PM EDT -1.45 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:03 AM EDT Moonrise
Fri -- 02:38 AM EDT 0.00 knots Slack
Fri -- 04:24 AM EDT 1.34 knots Max Flood
Fri -- 06:07 AM EDT Sunrise
Fri -- 07:55 AM EDT -0.00 knots Slack
Fri -- 10:55 AM EDT -1.46 knots Max Ebb
Fri -- 11:52 AM EDT Moonset
Fri -- 03:39 PM EDT 0.00 knots Slack
Fri -- 05:07 PM EDT 0.85 knots Max Flood
Fri -- 06:17 PM EDT 0.74 knots Min Flood
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:10 PM EDT 0.79 knots Max Flood
Fri -- 07:49 PM EDT Sunset
Fri -- 08:43 PM EDT -0.00 knots Slack
Fri -- 11:38 PM EDT -1.45 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| -1.2 | -0.9 | -0.5 | 0.4 | 1.2 | 1.2 | 0.8 | 0.6 | -0.1 | -0.9 | -1.4 | -1.5 | -1.3 | -1.2 | -1.1 | -0.7 | 0.3 | 0.8 | 0.8 | 0.8 | 0.6 | -0.3 | -1 | -1.4 |
Weather Map and Satellite Images
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GOES Local Image of Mid-Atlantic 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (4,6,7,8)
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Ground Weather Radar Station Philadelphia, PA
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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. |