Marine Weather and Tide Forecast for Bethany Beach, DE
April 20, 2024 4:44 AM EDT (08:44 UTC) Change Location
 | Sunrise 6:17 AM Sunset 7:45 PM Moonrise 3:46 PM Moonset 3:52 AM |
ANZ455 Coastal Waters From Cape Henlopen To Fenwick Island De Out 20 Nm- 402 Am Edt Sat Apr 20 2024
.small craft advisory in effect until 6 am edt early this morning - .
Today - W winds 5 to 10 kt, becoming nw this afternoon. Seas 4 to 5 ft. Wave detail: E 5 ft at 9 seconds. Patchy fog early this morning. Scattered showers until late afternoon. Vsby 1 to 3 nm early this morning.
Tonight - W winds 10 to 15 kt, becoming N after midnight. Seas 3 to 4 ft. Wave detail: E 4 ft at 9 seconds and N 2 ft at 3 seconds.
Sun - N winds 5 to 10 kt, becoming nw in the afternoon. Seas 2 to 4 ft. Wave detail: E 3 ft at 8 seconds and N 2 ft at 3 seconds.
Sun night - SW winds 5 to 10 kt, becoming nw after midnight. Seas around 2 ft. Wave detail: E 2 ft at 8 seconds and N 1 ft at 4 seconds.
Mon - N winds 5 to 10 kt. Seas around 2 ft. Wave detail: N 2 ft at 4 seconds and E 2 ft at 9 seconds.
Mon night - S winds 5 to 10 kt. Seas around 2 ft. Wave detail: E 2 ft at 11 seconds and N 1 ft at 3 seconds.
Tue - SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas around 2 ft.
Tue night - S winds 10 to 15 kt. Seas 2 to 3 ft.
Wed - SW winds 10 to 15 kt. Seas 3 to 5 ft.
Wed night - NW winds 10 to 15 kt. Seas 3 to 5 ft.
ANZ400 402 Am Edt Sat Apr 20 2024
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay - High pressure builds in early this morning and lingers through the remainder of the day, before a series of fronts and low pressure systems affect the east coast Wednesday through the end of the week. High pressure looks to return to end the weekend and start the new week.
Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 200812 AFDPHI
Area Forecast Discussion National Weather Service Mount Holly NJ 412 AM EDT Sat Apr 20 2024
SYNOPSIS
A cold front moves offshore this morning. High pressure builds in from the west this afternoon which will be in place through Tuesday.
A cold front passes by Tuesday night and Wednesday. High pressure then returns and continues through Friday.
NEAR TERM /THROUGH TONIGHT/
Low pressure lifting well to our north across northern Quebec will drag a cold front across our region from west to east early this morning, pushing offshore by mid-morning. That surface front will slow as it drifts offshore while a new wave of low pressure develops along it, near Cape Cod, then lifts toward Nova Scotia later today. A secondary cold front associated with the mid to upper-level trough axis will pass through this evening, with drier and cooler air filtering into our region in it's wake.
With the approach of the front during the predawn hours, light scattered showers have been slow to increase, mainly north and west of I-95, but all indications from CAMs and other model guidance suggest an uptick in coverage will occur from the I-95 corridor eastward to the coast through 6 AM, followed by showers tapering off from west to east from mid-morning through midday, with the last of the showers shifting off the NJ shore by early afternoon. Rainfall amounts will be mainly less than a tenth of an inch. There will be some patchy fog at times through dawn, mainly outside of the urban corridor. That may linger through 9 AM or so along the coast of NJ. Some brief visibility less than 1/2 mile may be found, but that will likely be more the exception than the rule.
In the wake of the cold front, skies will begin clearing back toward Reading and the Poconos mid to late morning, reaching I-95 around midday, with sunshine breaking out along the coast by mid-afternoon. This will be a welcome sight for most, as it has been a few days of fairly cool and cloudy weather. West- northwest winds will pick up this afternoon, especially from I-95 northwestward, with some gusts into the 30 mph range. Winds will not be quite as gusty toward the coast, with less opportunity for clearing, mixing and momentum transfer there.
Highs this afternoon will reach well into the 60s, except over the Poconos and some of the nearby ridgetops of NW NJ. Would not rule out 70F in a few spots from near Philly southward.
With a secondary push of cooler and drier air coming in for tonight, dewpoints will continue to drop through the 20s, lowest in areas northwest of the urban corridor. There will be some high clouds possible, but overall skies will be fairly clear, and with high pressure building in from the Ohio Valley, we may see decoupling, easing winds and some rather chilly temperatures into the 30s by Sunday morning. The growing season is set to commence across a number of our zones from the Lehigh Valley across northern NJ on Sunday, and just in time, model guidance suggests some low to mid-30s possible for lows, coldest toward Sussex County. We will probably need a Frost Advisory for some of our zones, particularly Sussex, and probably Warren and Morris; would not rule out patchy frost even back across the Lehigh Valley, but that may be more of the rooftop variety rather than a threat to vegetation.
SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/
Mostly dry and tranquil weather is expected for the short term period. The cold front that passes through on Saturday will be stalled out along the Southeast coast. A weak surface low is forecast to develop along this boundary and skirt off the Carolina coast late Sunday. At the same time, large high pressure will be centered over the Central Plains which will build east through Monday before shifting overhead Monday night.
The only notable change to the forecast from the previous shift is that the track of the low has shifted a bit further north on Sunday.
While most of the global and deterministic guidance keeps the low surpressed to the south...most of the 00Z CAM/hi-res guidance depicts at least some sprinkles/shower activity reaching into the Delmarva and extreme southern NJ. As a result, have introduced slight chance of PoPs (~20%) into these areas for Sunday afternoon.
Elsewhere, skies will remain mostly cloudy. Skies then clear quickly Sunday night as the low moves into the western Atlantic. Skies will then remain clear through Monday night. Will have to watch the development for patchy frost across the Poconos/Lehigh Valley region both nights.
Highs will be in 50s to around 60 on Sunday, followed by the upper 50s to mid 60s on Monday. Lows generally in the 30s to low 40s.
LONG TERM /TUESDAY THROUGH FRIDAY/
High pressure begins to shift offshore on Tuesday before completely vacating the area by Tuesday night. At the same time, low pressure will be tracking across the northern Great Lakes while moving into southern Quebec on Wednesday. An associated cold front will be trailing southward from this low which will pass through the area.
Areawide showers are expected with even a few rumbles of thunder possible depending on timing and available instability. Best chances for this would be north and west. Once the front clears the area, high pressure will quickly build in from the west and remain within proximity of the area to close out the work week.
Temperatures through the long term period will run close to average to a few degrees below-normal. Analogs toward the end of the week and into next weekend, signal that a significant warm-up may be in store to close out April.
AVIATION /07Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...
Through 12Z...IFR to LIFR ceilings with some MVFR VSBY, even locally IFR VSBY in a combination of mist and drizzle. Scattered showers will expand especially along the I-95 corridor sites through 12Z, but just light rain. Some patchy fog with VSBY near or under 1 SM and ceilings 002-003 near the NJ coast. Winds out of the south/southeast around 5 kt, becoming west/northwesterly 09-12Z as the cold front moves through from west to east.
Moderate confidence.
Saturday...Mainly LIFR to IFR CIGs to start at 12Z, lifting to VFR rather quickly from west to east from mid-morning through midday as skies clear out behind a cold front. MIV/ACY will be slower to improve. West/northwest winds around 10-20 kt with some spots seeing gusts near 30 kt in the midday and afternoon hours. Moderate confidence overall.
Saturday night...VFR with mainly clear skies. Winds ease fairly quickly in the evening, but remaining NW 4-8 kt perhaps through midnight. High confidence.
Outlook...
Sunday...VFR expected. A slight chance for rain showers near KMIV/KACY. W-NW winds around 10-15 kt. Moderate confidence.
Sunday night through Tuesday...VFR with mostly clear skies. W-NW winds on Sunday night into Monday, becoming SE-S winds on Monday night into Tuesday. High confidence.
Tuesday night into Wednesday...Sub-VFR conditions possible with rain showers. S winds becoming NW following a cold frontal passage. Low confidence.
MARINE
A Small Craft Advisory remains south of Monmouth County until 6 AM for seas will be around 5 to 6 feet. Some marine fog is trying to develop, with some limited areas of VSBY 1 SM or less around lower DE Bay and adjacent ocean zones. Went with a Marine Dense Fog Advisory for that reason. Low visibility with showers and low clouds will lift offshore toward midday and especially for the afternoon, as west to southwest winds pick up around 10-15 kt into this evening. A secondary cold front will swing winds around to the NNW tonight, with gusts over 20 kt, but probably not enough for another advisory.
Outlook...
Sunday through Tuesday...No marine headlines expected. Fair weather.
Winds up to 15 kt and seas around 2-3 feet.
Tuesday night through Wednesday...SCA conditions are possible. Rain showers expected. Winds up to 20-23 kt with seas around 3-4 feet.
PHI WATCHES/WARNINGS/ADVISORIES
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Dense Fog Advisory until 10 AM EDT this morning for ANZ431- 452>454.
Small Craft Advisory until 6 AM EDT early this morning for ANZ451>455.
Area Forecast Discussion National Weather Service Mount Holly NJ 412 AM EDT Sat Apr 20 2024
SYNOPSIS
A cold front moves offshore this morning. High pressure builds in from the west this afternoon which will be in place through Tuesday.
A cold front passes by Tuesday night and Wednesday. High pressure then returns and continues through Friday.
NEAR TERM /THROUGH TONIGHT/
Low pressure lifting well to our north across northern Quebec will drag a cold front across our region from west to east early this morning, pushing offshore by mid-morning. That surface front will slow as it drifts offshore while a new wave of low pressure develops along it, near Cape Cod, then lifts toward Nova Scotia later today. A secondary cold front associated with the mid to upper-level trough axis will pass through this evening, with drier and cooler air filtering into our region in it's wake.
With the approach of the front during the predawn hours, light scattered showers have been slow to increase, mainly north and west of I-95, but all indications from CAMs and other model guidance suggest an uptick in coverage will occur from the I-95 corridor eastward to the coast through 6 AM, followed by showers tapering off from west to east from mid-morning through midday, with the last of the showers shifting off the NJ shore by early afternoon. Rainfall amounts will be mainly less than a tenth of an inch. There will be some patchy fog at times through dawn, mainly outside of the urban corridor. That may linger through 9 AM or so along the coast of NJ. Some brief visibility less than 1/2 mile may be found, but that will likely be more the exception than the rule.
In the wake of the cold front, skies will begin clearing back toward Reading and the Poconos mid to late morning, reaching I-95 around midday, with sunshine breaking out along the coast by mid-afternoon. This will be a welcome sight for most, as it has been a few days of fairly cool and cloudy weather. West- northwest winds will pick up this afternoon, especially from I-95 northwestward, with some gusts into the 30 mph range. Winds will not be quite as gusty toward the coast, with less opportunity for clearing, mixing and momentum transfer there.
Highs this afternoon will reach well into the 60s, except over the Poconos and some of the nearby ridgetops of NW NJ. Would not rule out 70F in a few spots from near Philly southward.
With a secondary push of cooler and drier air coming in for tonight, dewpoints will continue to drop through the 20s, lowest in areas northwest of the urban corridor. There will be some high clouds possible, but overall skies will be fairly clear, and with high pressure building in from the Ohio Valley, we may see decoupling, easing winds and some rather chilly temperatures into the 30s by Sunday morning. The growing season is set to commence across a number of our zones from the Lehigh Valley across northern NJ on Sunday, and just in time, model guidance suggests some low to mid-30s possible for lows, coldest toward Sussex County. We will probably need a Frost Advisory for some of our zones, particularly Sussex, and probably Warren and Morris; would not rule out patchy frost even back across the Lehigh Valley, but that may be more of the rooftop variety rather than a threat to vegetation.
SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/
Mostly dry and tranquil weather is expected for the short term period. The cold front that passes through on Saturday will be stalled out along the Southeast coast. A weak surface low is forecast to develop along this boundary and skirt off the Carolina coast late Sunday. At the same time, large high pressure will be centered over the Central Plains which will build east through Monday before shifting overhead Monday night.
The only notable change to the forecast from the previous shift is that the track of the low has shifted a bit further north on Sunday.
While most of the global and deterministic guidance keeps the low surpressed to the south...most of the 00Z CAM/hi-res guidance depicts at least some sprinkles/shower activity reaching into the Delmarva and extreme southern NJ. As a result, have introduced slight chance of PoPs (~20%) into these areas for Sunday afternoon.
Elsewhere, skies will remain mostly cloudy. Skies then clear quickly Sunday night as the low moves into the western Atlantic. Skies will then remain clear through Monday night. Will have to watch the development for patchy frost across the Poconos/Lehigh Valley region both nights.
Highs will be in 50s to around 60 on Sunday, followed by the upper 50s to mid 60s on Monday. Lows generally in the 30s to low 40s.
LONG TERM /TUESDAY THROUGH FRIDAY/
High pressure begins to shift offshore on Tuesday before completely vacating the area by Tuesday night. At the same time, low pressure will be tracking across the northern Great Lakes while moving into southern Quebec on Wednesday. An associated cold front will be trailing southward from this low which will pass through the area.
Areawide showers are expected with even a few rumbles of thunder possible depending on timing and available instability. Best chances for this would be north and west. Once the front clears the area, high pressure will quickly build in from the west and remain within proximity of the area to close out the work week.
Temperatures through the long term period will run close to average to a few degrees below-normal. Analogs toward the end of the week and into next weekend, signal that a significant warm-up may be in store to close out April.
AVIATION /07Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...
Through 12Z...IFR to LIFR ceilings with some MVFR VSBY, even locally IFR VSBY in a combination of mist and drizzle. Scattered showers will expand especially along the I-95 corridor sites through 12Z, but just light rain. Some patchy fog with VSBY near or under 1 SM and ceilings 002-003 near the NJ coast. Winds out of the south/southeast around 5 kt, becoming west/northwesterly 09-12Z as the cold front moves through from west to east.
Moderate confidence.
Saturday...Mainly LIFR to IFR CIGs to start at 12Z, lifting to VFR rather quickly from west to east from mid-morning through midday as skies clear out behind a cold front. MIV/ACY will be slower to improve. West/northwest winds around 10-20 kt with some spots seeing gusts near 30 kt in the midday and afternoon hours. Moderate confidence overall.
Saturday night...VFR with mainly clear skies. Winds ease fairly quickly in the evening, but remaining NW 4-8 kt perhaps through midnight. High confidence.
Outlook...
Sunday...VFR expected. A slight chance for rain showers near KMIV/KACY. W-NW winds around 10-15 kt. Moderate confidence.
Sunday night through Tuesday...VFR with mostly clear skies. W-NW winds on Sunday night into Monday, becoming SE-S winds on Monday night into Tuesday. High confidence.
Tuesday night into Wednesday...Sub-VFR conditions possible with rain showers. S winds becoming NW following a cold frontal passage. Low confidence.
MARINE
A Small Craft Advisory remains south of Monmouth County until 6 AM for seas will be around 5 to 6 feet. Some marine fog is trying to develop, with some limited areas of VSBY 1 SM or less around lower DE Bay and adjacent ocean zones. Went with a Marine Dense Fog Advisory for that reason. Low visibility with showers and low clouds will lift offshore toward midday and especially for the afternoon, as west to southwest winds pick up around 10-15 kt into this evening. A secondary cold front will swing winds around to the NNW tonight, with gusts over 20 kt, but probably not enough for another advisory.
Outlook...
Sunday through Tuesday...No marine headlines expected. Fair weather.
Winds up to 15 kt and seas around 2-3 feet.
Tuesday night through Wednesday...SCA conditions are possible. Rain showers expected. Winds up to 20-23 kt with seas around 3-4 feet.
PHI WATCHES/WARNINGS/ADVISORIES
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Dense Fog Advisory until 10 AM EDT this morning for ANZ431- 452>454.
Small Craft Advisory until 6 AM EDT early this morning for ANZ451>455.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| 44084 | 1 mi | 75 min | 50°F | 53°F | 4 ft | |||
| OCIM2 - 8570283 - Ocean City Inlet, MD | 14 mi | 57 min | SSE 1.9G | 50°F | 56°F | 29.95 | ||
| LWSD1 - 8557380 - Lewes, DE | 18 mi | 57 min | S 1.9G | 51°F | 55°F | 30.00 | ||
| 44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ | 20 mi | 45 min | ESE 1.9G | 49°F | 50°F | 29.99 | ||
| CMAN4 - 8536110 - Cape May, NJ | 31 mi | 57 min | SE 1G | 49°F | 30.00 | |||
| BRND1 - 8555889 - Brandywine Shoal Light, DE | 32 mi | 57 min | 30.01 |
toggle option: (graph/table)
Airport Reports
EDIT (hide/show) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KOXB OCEAN CITY MUNI,MD | 16 sm | 51 min | calm | 8 sm | Overcast | 54°F | 50°F | 88% | 30.00 | |
| KGED DELAWARE COASTAL,DE | 20 sm | 30 min | SSW 03 | 10 sm | Overcast | 50°F | 48°F | 94% | 29.99 |
Tide / Current for Indian River Inlet (USCG Station), Delaware (2)
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Indian River Inlet (USCG Station)
Click for Map
Sat -- 12:33 AM EDT 0.33 feet Low Tide
Sat -- 04:52 AM EDT Moonset
Sat -- 06:16 AM EDT Sunrise
Sat -- 07:07 AM EDT 2.03 feet High Tide
Sat -- 12:58 PM EDT 0.19 feet Low Tide
Sat -- 04:45 PM EDT Moonrise
Sat -- 07:39 PM EDT 2.19 feet High Tide
Sat -- 07:42 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:33 AM EDT 0.33 feet Low Tide
Sat -- 04:52 AM EDT Moonset
Sat -- 06:16 AM EDT Sunrise
Sat -- 07:07 AM EDT 2.03 feet High Tide
Sat -- 12:58 PM EDT 0.19 feet Low Tide
Sat -- 04:45 PM EDT Moonrise
Sat -- 07:39 PM EDT 2.19 feet High Tide
Sat -- 07:42 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Indian River Inlet (USCG Station), Delaware (2), Tide feet
| 12 am |
| 0.4 |
| 1 am |
| 0.4 |
| 2 am |
| 0.6 |
| 3 am |
| 0.9 |
| 4 am |
| 1.3 |
| 5 am |
| 1.6 |
| 6 am |
| 1.9 |
| 7 am |
| 2 |
| 8 am |
| 1.9 |
| 9 am |
| 1.6 |
| 10 am |
| 1.2 |
| 11 am |
| 0.7 |
| 12 pm |
| 0.3 |
| 1 pm |
| 0.2 |
| 2 pm |
| 0.3 |
| 3 pm |
| 0.7 |
| 4 pm |
| 1.1 |
| 5 pm |
| 1.5 |
| 6 pm |
| 1.9 |
| 7 pm |
| 2.1 |
| 8 pm |
| 2.2 |
| 9 pm |
| 1.9 |
| 10 pm |
| 1.5 |
| 11 pm |
| 1 |
Delaware Bay Entrance
Click for Map
Sat -- 02:20 AM EDT 0.00 knots Slack
Sat -- 04:52 AM EDT Moonset
Sat -- 05:22 AM EDT 1.13 knots Max Flood
Sat -- 06:16 AM EDT Sunrise
Sat -- 08:35 AM EDT -0.00 knots Slack
Sat -- 11:54 AM EDT -1.12 knots Max Ebb
Sat -- 02:59 PM EDT 0.00 knots Slack
Sat -- 04:44 PM EDT Moonrise
Sat -- 05:50 PM EDT 1.13 knots Max Flood
Sat -- 07:42 PM EDT Sunset
Sat -- 08:54 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 02:20 AM EDT 0.00 knots Slack
Sat -- 04:52 AM EDT Moonset
Sat -- 05:22 AM EDT 1.13 knots Max Flood
Sat -- 06:16 AM EDT Sunrise
Sat -- 08:35 AM EDT -0.00 knots Slack
Sat -- 11:54 AM EDT -1.12 knots Max Ebb
Sat -- 02:59 PM EDT 0.00 knots Slack
Sat -- 04:44 PM EDT Moonrise
Sat -- 05:50 PM EDT 1.13 knots Max Flood
Sat -- 07:42 PM EDT Sunset
Sat -- 08:54 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Delaware Bay Entrance, Delaware Current, knots
| 12 am |
| -0.9 |
| 1 am |
| -0.6 |
| 2 am |
| -0.2 |
| 3 am |
| 0.3 |
| 4 am |
| 0.8 |
| 5 am |
| 1.1 |
| 6 am |
| 1.1 |
| 7 am |
| 0.8 |
| 8 am |
| 0.3 |
| 9 am |
| -0.2 |
| 10 am |
| -0.6 |
| 11 am |
| -1 |
| 12 pm |
| -1.1 |
| 1 pm |
| -0.9 |
| 2 pm |
| -0.5 |
| 3 pm |
| 0 |
| 4 pm |
| 0.6 |
| 5 pm |
| 1 |
| 6 pm |
| 1.1 |
| 7 pm |
| 0.9 |
| 8 pm |
| 0.5 |
| 9 pm |
| -0.1 |
| 10 pm |
| -0.5 |
| 11 pm |
| -0.9 |
Dover AFB, DE,
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