Tuesday, August4, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
New Castle, DE

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:03AMSunset 8:13PM Tuesday August 4, 2020 1:45 AM EDT (05:45 UTC) Moonrise 8:14PMMoonset 5:47AM Illumination 100% Phase: Full Moon; Moon at 15 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
    EDIT      (on/off)   Help
ANZ430 Delaware Bay Waters North Of East Point Nj To Slaughter Beach De- 102 Am Edt Tue Aug 4 2020
.tropical storm warning in effect...
Rest of tonight..SE winds around 5 kt. Waves 2 ft or less. A chance of tstms. Showers likely late. Vsby 1 to 3 nm.
Tue..Tropical storm conditions expected. E winds 35 to 40 kt, becoming sw 45 to 55 kt in the afternoon. Waves around 4 ft. A chance of tstms. Showers. Vsby 1 to 3 nm.
Tue night..SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 3 ft in the evening, then 2 ft or less. Showers likely early in the evening. A chance of tstms until early morning. Vsby 1 to 3 nm early in the evening.
Wed..W winds around 5 kt. Waves 2 ft or less. A chance of tstms until late afternoon.
Wed night..SW winds around 5 kt, becoming W around 5 kt after midnight. Waves 2 ft or less.
Thu..NE winds around 5 kt, becoming se in the afternoon. Waves 2 ft or less. A chance of tstms.
Thu night..SE winds around 5 kt. Waves 2 ft or less. A chance of tstms.
Fri..E winds around 5 kt. Waves 2 ft or less. A chance of tstms.
Fri night..SE winds around 5 kt. Waves 2 ft or less. A chance of tstms.
Sat..NE winds around 5 kt. Waves 2 ft or less. A chance of tstms.
Sat night..S winds around 5 kt, becoming W after midnight. Waves 2 ft or less. A chance of tstms in the evening. Winds and waves higher in and near tstms.
ANZ400 102 Am Edt Tue Aug 4 2020
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay.. A front with lift north through the region tonight. Meanwhile, tropical cyclone isaias is expected to continue northward from florida and inland across the eastern carolinas later today before reaching the mid- atlantic on Tuesday. Isaias will move toward new england by Wednesday. High pressure will build in to our north later this week into this weekend while a weak front lingers to our south.


7 Day Forecast for Marine Location Near New Castle, DE
   Hourly   EDIT   Help
location: 39.66, -75.56     debug


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KPHI 040532 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 132 AM EDT Tue Aug 4 2020

SYNOPSIS. A front with lift north through the region tonight. Meanwhile, Tropical Cyclone Isaias is expected to continue northward from Florida and inland across the eastern Carolinas later today before reaching the Mid- Atlantic on Tuesday. Isaias will move toward New England by Wednesday. High pressure will build in to our north later this week into this weekend while a weak front lingers to our south.

NEAR TERM /UNTIL 6 AM THIS MORNING/. 1230 AM Update: Parts of the area in brief lull before the next round of showers already affecting parts of Delmarva spreads north through the predawn hours. At the 11 PM Update, Isaias was upgraded to a Hurricane however it is expected to weaken once again before reaching the mid Atlantic. Full forecast update will be out within the next few hours but at this point after already examining new guidance forecast appears to be mostly on track.

Previous Discussion: Yet another round of storms can be expected (ahead of the main show associated with Isaias tomorrow during the day) to impact portions our area late tonight into tomorrow morning. The synoptic signal exists for a Predecessor Rain Event over our area with this round of precipitation. Likely the greatest chance of locally moderate-heavy precipitation will be NW of the I-95 corridor as the 925-850 flow backs more SErly and the upslope component combines with the other favorable parameters (jet dynamics, the aforementioned boundary, local theta-e maximum etc.). Although this precursor precipitation may not directly result in hydro concerns it does bear watching as areas that get impacted will have lower FFG (and thus be more susceptible to flooding) for the main event tomorrow.

SHORT TERM /6 AM THIS MORNING THROUGH 6 PM WEDNESDAY/. Tropical Storm Warnings are in effect for much of the region.

Tropical Cyclone Isaias will be speeding quickly northward by early Tuesday in response to a strong jet streak passing through the region. The cyclone will likely be undergoing an extratropical transition as it moves from the Carolinas toward the Mid- Atlantic on Tuesday. Important to note though, this may not actually weaken the storm and it may even gain strength from the baroclinic support as indicated by the latest ECMWF model run. The strong divergence aloft will promote an enhancement of convection associated with the system and support at least a maintenance of its strength. As far as the track and timing, there isn't been a big change in the forecast track with this update but the trend with guidance has been for a slightly faster timing. As we are getting closer to the arrival of this system, confidence is growing in a track that takes the system NE across the CWA. However even at this time range it is important to not focus on the exact track but rather the potential impacts. It appears the greatest impacts will occur during much of the day Tuesday, particularly late morning and through the evening hours before the storm lifts northeast out of the area.

Multiple hazards are with Isaias are including, but not limited to, fresh water flooding, coastal flooding/storm surge, strong winds and even isolated tornadoes. The greatest precipitation amounts are forecast to fall right along and just west of the urban and I-95 corridor with 3-6" of rain with locally higher amounts possible. This will lead to a flash flooding threat, especially for the more urbanized areas and portions of Berks County that received an excessive amount of rain Sunday morning. In fact the flooding has the potential to be widespread and significant. Widespread damaging winds may also be an issue. Again, the system will be starting to lose its tropical characteristics but because of the strong baroclinic zone it will be moving into this could actually strengthen it. Winds will initially be from the E/SE then shift to NW behind the system. Sustained winds of 40+ mph will be possible along the coast with gusts potentially reaching over 60 mph here. Farther N/W towards the I-95 corridor, widespread gusts of 45 to 55+ mph are likely. The upshot is that there could be fairly extensive impacts potentially including widespread power outages. These impacts may be exacerbated by the rainfall loosening the ground soil. Coastal flooding and/or storm surge will be directly dependent on the exact timing and track of the system and this is further described in the section below. Finally, with a favored track near the coast or just inland, this will set up very strong low level shear just ahead of and east of the storm and this could cause a spin up of a few tornadoes Tuesday afternoon. The most favored areas for this are near and S/E of the I-95 corridor.

Tuesday night . As Isaias departs into Tuesday evening, a remnant surface boundary will remain somewhere across the forecast area. The area will still be a in a favorable location for synoptic support for convection with the jet streak still located just to the northwest. So showers and thunderstorms will remain possible into the overnight, although the activity should diminish through time. Cloudy skies will begin to break overnight as well with lows within a few degrees of 70 and humid.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/. High pressure begins to build in from the north and west on Wednesday, but an old frontal boundary will linger across the area. Several weak mid-level troughs will pass through the region through the end of the week keeping chances for showers and thunderstorms in the forecast. Best chances look to be Thursday night/Friday over Delmarva and southern New Jersey as a weak coastal low develops along that old boundary. Otherwise, precip will not be widespread, so conditions should be fairly dry most of the time.

Temperatures will generally be in the 80s to near 90 along with surface dewpoints in the 60s to around 70. The dog days of August are here.

AVIATION /06Z TUESDAY THROUGH SATURDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Through 12z . A combination of MVFR and VFR with increasing coverage of rainfall and low clouds. Winds mainly from the southeast at 5 to 10 kt but may be light and variable at times. High confidence.

Today . A rapid deterioration in conditions is expected from south to north soon after 12z. MVFR to IFR conditions are expected through much of the day in association with Hurricane Isaias. Areas of torrential rainfall with low vsbys are likely. Strong and erratic winds are expected with a sharp change in wind direction expected during the mid afternoon. Gusts may be briefly higher than shown in the TAFs especially near MIV and ACY. While confidence is low in exact details and timing, confidence is high in the overall trend, with hazardous aviation conditions expected for most of the area.

Tonight . Mainly VFR. Southwest winds 10 to 20 kt diminishing to 5 to 10 kt. Moderate confidence.

Outlook .

Wednesday through Saturday . Mostly VFR. Scattered SHRA/TSRA possible each afternoon/evening that would result in brief sub- VFR conditions at a given terminal. Fog may develop during the overnight. West winds less than 10 kt on Wednesday, then east to northeast Thursday through Saturday. LGT/VRB at night. Moderate confidence.

MARINE. Tonight . Sub-SCA conditions expected. Showers and thunderstorms increasing overnight. Locally higher winds and waves in proximity to thunderstorms.

Tuesday through Tuesday night . Tropical Storm Warnings in effect as Tropical Storm Isaias will impact the waters with 35-45 kt winds with 55-65 kt gusts, along with heavy rain and possible waterspouts. Conditions improve Tuesday night as the storm departs.

Outlook .

Wednesday through Saturday . A prolonged period of sub-SCA conditions expected for the waters. Scattered showers and thunderstorms possible each afternoon/evening.

Rip Currents .

On Tuesday, impacts from Isaias will increase the rip-current risk level to high. In addition, high surf is expected. A rip current risk statement and high surf advisory are in effect for this period, so in conclusion Tuesday will not be a good day to be at the beach.

The rip current risk will likely remain elevated on Wednesday.

HYDROLOGY. Hydro concerns continue overnight as shower/storms develop across the area ahead of Isaias. Any of these will be capable of producing heavy rain with at least localized flash flooding possible. The heaviest, steadiest rain with the storm will arrive later overnight through Tuesday. More widespread flash flooding will be an increasing threat during this time. Most susecptible areas will be near and N/W of the I-95 corridor especially since places such as in Berks County have received so much rainfall recently. With Isaias, 3 to 6 inches of rain, with locally higher amounts are expected. Flooding could be widespread and significant.

In addition to flash flooding, river flooding is also becoming a likely threat. The latest MARFC forecast has about 15 forecast points above Action Stage and 6 at or above Flood Stage, including, Norristown, Graterford, Langhorne, Chadds Ford, Stanton, and Blackwells Mills. With such a large swath of precipitation expected, most basins across the forecast area will see at least some threat. That said, the Delaware River is expected to remain within its banks.

TIDES/COASTAL FLOODING. The coastal flooding impacts from Isaias remain very uncertain at this time. Models notoriously handle fast-moving, intense cyclones poorly in our area, as the short duration of onshore flow competes with the strength of the winds. These competing impacts and sensitivities are not well understood from a modeling standpoint, leading to rather large spread in the model guidance.

We continue to advertise coastal flooding in three areas on Tuesday. The first, and potentially most significant, is expected on the eastern shore of Chesapeake Bay, where surge will likely move northward during the day. What is unclear, however, is the strength of this surge. Model guidance is particularly poor for these areas, and the output the past couple of days seems unrealistically low. However, the extent of impacts remains quite unclear. At this point, there is potential for moderate flooding, which requires continuation of the coastal flood warning. However, it is possible impacts will be less significant/widespread. We will likely not have a better idea of impacts until after daybreak, when gauges in lower Chesapeake Bay begin to respond.

The second area is Delaware Bay and adjacent Atlantic coastal areas of New Jersey and Delaware. The real question here will be the timing of the surge relative to the astronomical high tide. With guidance trending a little faster with the surge, the timing looks a little less favorable for coincidence of peak surge and astronomical high tide for the Delaware Bay sites. Nevertheless, the strength of southeast winds in advance of Isaias may compensate much more readily than models suggest. A coastal flood advisory has been issued here for the entire day given the uncertainty of peak surge timing.

The third area is the tidal Delaware River. Here, confidence is increasing that minor flooding will occur during the afternoon, as predecessor southeast winds will likely combine with freshwater runoff to lead to a period of tidal flooding from early afternoon to early evening. As with Delaware Bay, confidence is not particularly high on exact timing of flooding, so have issued a coastal flood advisory for a broader period of time than normal (11 am to 8 pm).

For the rest of the Atlantic coast, confidence remains too low to issue coastal flood products at this time. However, we remain concerned that the northern New Jersey coast may end up seeing some minor flooding given the very strong onshore winds preceding Isaias. We will continue to monitor this potential and may end up issuing a coastal flood advisory later this morning for the rest of the coast.

EQUIPMENT. The NOAA Weather Radio All-Hazards broadcast from Hibernia Park Pennsylvania (Station WNG-704) remains off the air.

PHI WATCHES/WARNINGS/ADVISORIES. PA . Flash Flood Watch through this evening for PAZ054-055-060>062- 070-071-101>106. Tropical Storm Warning for PAZ070-071-101>106. Coastal Flood Advisory from 11 AM this morning to 8 PM EDT this evening for PAZ070-071-106. NJ . Flash Flood Watch through this evening for NJZ001-007>010- 012>027. Tropical Storm Warning for NJZ001-007>010-012>027. Coastal Flood Advisory from 8 AM this morning to 8 PM EDT this evening for NJZ016-021-023-024. High Rip Current Risk from 8 AM EDT this morning through this evening for NJZ014-024>026. High Surf Advisory from 8 AM this morning to midnight EDT tonight for NJZ014-024>026. Coastal Flood Advisory from 11 AM this morning to 8 PM EDT this evening for NJZ017>019. DE . Flash Flood Watch through this evening for DEZ001>004. Tropical Storm Warning for DEZ001>004. Coastal Flood Advisory from 8 AM this morning to 8 PM EDT this evening for DEZ001>004. High Rip Current Risk from 8 AM EDT this morning through this evening for DEZ004. High Surf Advisory from 8 AM this morning to midnight EDT tonight for DEZ004. MD . Flash Flood Watch through this evening for MDZ008-012-015-019- 020. Tropical Storm Warning for MDZ008-012-015-019-020. Coastal Flood Warning from 11 AM this morning to 6 AM EDT Wednesday for MDZ008-012-015-019-020. MARINE . Tropical Storm Warning for ANZ430-431-450>455.

Synopsis . MPS Near Term . Carr/Fitzsimmons/Kruzdlo Short Term . MPS/Staarmann Long Term . MPS Aviation . MPS/O'Brien Marine . Kruzdlo/MPS Hydrology . WFO PHI Tides/Coastal Flooding . WFO PHI Equipment . WFO PHI


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DELD1 - 8551762 - Delaware City, DE 6 mi51 min 76°F 80°F1016.7 hPa
RDYD1 - 8551910 - Reedy Point, DE 7 mi51 min 75°F 86°F1016.2 hPa
MRCP1 - 8540433 - Marcus Hook, PA 13 mi51 min 77°F 85°F1016.8 hPa
CHCM2 - 8573927 - Chesapeake City, MD 16 mi51 min 74°F 87°F1016.9 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ 26 mi51 min 79°F 1016.9 hPa
PHBP1 - 8545240 - Philadelphia, PA 29 mi51 min 77°F 84°F1016.7 hPa
BDSP1 34 mi51 min 77°F 1017.5 hPa
BDRN4 - 8539094 - Burlington, Delaware River, NJ 47 mi69 min S 2.9 G 4.1 74°F 85°F1017 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 48 mi51 min 75°F 85°F1016.2 hPa

Wind History for Delaware City, DE
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
Last
24hr
W4
G7
NW5
W3
W3
S3
W2
W3
G6
NW6
G9
NW4
G8
N3
SE4
E6
S5
SW5
G10
W3
SW3
SW2
SW2
G5
W3
NW3
SW3
S3
W1
S1
1 day
ago
S7
G11
S5
G9
S8
G12
S8
G14
S6
G9
S5
G9
S6
G9
S4
S4
G7
SW5
S9
G12
S7
G11
SW4
G11
SW9
G14
SW8
G15
SW5
G13
SW4
G11
SW5
G11
S3
G9
S3
G6
SW3
G8
S2
SW3
SW2
2 days
ago
NW4
NW5
NW4
NW5
NW3
NW1
SE3
E4
SW3
G6
SW4
S4
G7
SW4
G9
SE5
G8
SE8
G12
S6
G11
S7
G10
SE6
G10
SE4
G8
SE7
G10
SE5
SE5
G8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wilmington, New Castle County Airport, DE3 mi54 minS 310.00 miLight Rain75°F69°F82%1017 hPa
Philadelphia, Philadelphia International Airport, PA23 mi51 minN 010.00 miLight Rain76°F71°F85%1017.1 hPa

Link to 5 minute data for KILG

Wind History from ILG (wind in knots)
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
12
AM
1
AM
Last 24hrSW5W6W6W5SW6W5W3NW4W93W56SW8SW6S9S7SW6SW8SW6NW4S3S6S4S3
1 day agoSE7SE9S6S14S11S13S8S9S9S8S9S10S13
G19
SW12S17
G21
SW16
G21
SW11
G19
S13
G19
S10S10SW7S6S8SW7
2 days agoNW5NW4NW4CalmNW3CalmN4NE4N3E633SE5S9S7S8S10S14S11SE10SE8SE8S9SE7

Tide / Current Tables for New Castle, Chesapeake and Delaware Canal, Delaware (2)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
New Castle
Click for Map
Tue -- 12:41 AM EDT     6.12 feet High Tide
Tue -- 06:04 AM EDT     Sunrise
Tue -- 06:46 AM EDT     Moonset
Tue -- 07:55 AM EDT     0.15 feet Low Tide
Tue -- 01:12 PM EDT     5.22 feet High Tide
Tue -- 07:55 PM EDT     0.49 feet Low Tide
Tue -- 08:11 PM EDT     Sunset
Tue -- 09:13 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
5.96.15.54.53.52.51.50.50.20.82.13.44.65.254.13.12.21.50.80.51.12.54

Tide / Current Tables for Chesapeake and Delaware Canal, Maryland/Delaware Current
   EDIT      (on/off)   Help   One Week of Data
Chesapeake and Delaware Canal
Click for Map
Tue -- 01:45 AM EDT     -2.28 knots Max Ebb
Tue -- 05:40 AM EDT     0.03 knots Slack
Tue -- 06:05 AM EDT     Sunrise
Tue -- 06:48 AM EDT     Moonset
Tue -- 08:29 AM EDT     2.29 knots Max Flood
Tue -- 12:17 PM EDT     -0.01 knots Slack
Tue -- 02:32 PM EDT     -1.54 knots Max Ebb
Tue -- 05:51 PM EDT     0.02 knots Slack
Tue -- 08:12 PM EDT     Sunset
Tue -- 08:29 PM EDT     1.87 knots Max Flood
Tue -- 09:14 PM EDT     Moonrise
Tue -- 10:59 PM EDT     -0.09 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
-1.9-2.2-2.3-2.1-1.8-1.20.91.82.22.221.50.7-1.1-1.5-1.5-1.3-10.51.41.81.81.4-0.2

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Philadelphia/Mount Holly, PA (1,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Philadelphia, PA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.