Sunrise 6:04 AM   Sunset 8:04 PM Moonrise 1:43 AM   Moonset 11:25 AM

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ANZ530 Chesapeake Bay North Of Pooles Island- 1048 Pm Edt Tue Apr 30 2024
.small craft advisory in effect until midnight edt tonight - .
Rest of tonight - NW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers. A chance of tstms late this evening, then a slight chance of tstms. Wed - NW winds 5 to 10 kt. Waves 1 ft. Wed night - SE winds around 5 kt. Waves flat. Thu - SW winds 5 to 10 kt. Waves 1 ft or less. Thu night - NW winds 5 to 10 kt - .becoming ne after midnight. Waves 1 ft or less. Fri - E winds 5 to 10 kt. Waves 1 ft. Fri night - E winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. Sat - E winds 10 to 15 kt. Waves 1 ft. A chance of showers, then showers likely after midnight. Sun - E winds 5 to 10 kt. Waves 1 ft. Showers likely, mainly in the morning.
winds and waves higher and visibilities lower in and near tstms.

ANZ500 1048 Pm Edt Tue Apr 30 2024
Synopsis for the tidal potomac and md portion of the chesapeake bay -
a cold front crosses the waters tonight into Wednesday morning bringing chances for showers and Thunderstorms. High pressure briefly returns Thursday before another slow moving front crosses the local waters over the weekend. Small craft advisories may be needed on Friday and Saturday.

FXUS61 KCTP 010323 AFDCTP

Area Forecast Discussion National Weather Service State College PA 1123 PM EDT Tue Apr 30 2024

SYNOPSIS
-Showers give way to clearing skies and some patchy fog tonight -Warm/dry weather with lower humidity Wednesday-Thursday -Trending unsettled into the weekend with rain likely Sat/Sun

NEAR TERM /UNTIL 10 AM WEDNESDAY MORNING/
THe only lingering showers are across the Lower Susquehanna Valley as of 10PM with all lightning activity now over. Showers will move east of the forecast area by midnight with a dry night expected areawide.

Clearing skies are working their way into western PA as the cirrus deck associated with today's weather system continues to pull north and east of the region. Light winds and clear skies will result in some patchy fog overnight thanks to a moisture- rich airmass with dewpoints in the upper 50s. Best chance for fog appears to be in the Laurel Highlands into Clearfield County where dewpoint depressions are the smallest and clearing will be most durable. Also can't rule out some valley fog in the deepest valleys of the northern tier that have the best chance of decoupling, but the influx of drier air and lower dewpoints may be a limiting factor.

Lows by Wednesday morning will range from the the middle 40s in northwest PA to near 60 in the southeast where clouds will be slow to clear overnight.

SHORT TERM /10 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/
Latest guidance continues to indicate warm/dry conditions through midweek with a trend toward unsettled weather into the weekend. Highs on Wednesday in the middle 70s to near 80 are +10 to +15 compared to average and Thursday will a few degrees warmer for much of the Commonwealth. Dry air entrainment/mixing heights combined with mostly sunny skies and mean westerly flow all signal to cut dewpoints and raise temps by a few degrees in-kind for both afternoons.

LONG TERM /FRIDAY THROUGH TUESDAY/
Easterly flow begins to take hold on Friday, as high pressure noses down the eastside of the Appalachians. This should result in cooler temperatures Friday, especially across eastern PA.
This setup could also favor low clouds into the middle and lower Susquehanna Valley Friday night into Sat AM.

A frontal boundary will slowly make it's way eastward from the Midwest into the commonwealth Saturday into Sunday, accompanied by an increasing chc of showers and storms.

Passage of the upper trough and associated front should bring drier conditions by Monday of next week, before an approaching warm front could bring a return of clouds and showers/storms on Tuesday.

AVIATION /03Z WEDNESDAY THROUGH SUNDAY/
As the higher clouds begin peeling off to the east at 03z, low clouds are seen forming over the Laurel Highlands thanks to a developing upslope flow.

Another concern as the clouds continue to peel away is the formation of fog due to clearing skies, damp ground and diminishing winds. (At 03z, some fog was already seen forming in the valleys of north-central PA.) However, there is also drier air filtering into from the northwest and dewpoints have already dropped into the mid 40s at BFD. The arrival of this drier air could work against the formation of fog.

Regardless, expect quick improvement areawide Wed morning, with building high pressure providing mostly sunny skies and a W/NW sfc breeze of 5-10 kts.

Outlook...

Thu-Fri AM...No sig wx expected.

Fri PM-Sat...Scattered SHRA/TSRA developing from west to east w/ reductions possible.

Sat night-Sun...Widespread SHRA/TSRA expected.

CLIMATE
Record high temperatures were set at the following locations on Monday:

SITE 2024 OBS PRVS RECORD Altoona 86F 83F (1956)
Bradford 82F 76F (1984)
Williamsport 89F 86F (1942/1974)

It was also the first 80F day in Bradford so far this year, almost 2 weeks ahead of the average first 80F temperature (May 11th).

CTP WATCHES/WARNINGS/ADVISORIES
None.

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Port Deposit
Click for Map
Tue -- 01:57 AM EDT     Moonrise
Tue -- 03:57 AM EDT     2.02 feet High Tide
Tue -- 06:05 AM EDT     Sunrise
Tue -- 10:24 AM EDT     0.77 feet Low Tide
Tue -- 11:09 AM EDT     Moonset
Tue -- 04:11 PM EDT     3.16 feet High Tide
Tue -- 07:58 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Port Deposit, Susquehanna River, Maryland, Tide feet

Havre de Grace
Click for Map
Tue -- 01:57 AM EDT     Moonrise
Tue -- 03:04 AM EDT     1.69 feet High Tide
Tue -- 06:05 AM EDT     Sunrise
Tue -- 08:56 AM EDT     0.64 feet Low Tide
Tue -- 11:09 AM EDT     Moonset
Tue -- 03:18 PM EDT     2.65 feet High Tide
Tue -- 07:57 PM EDT     Sunset
Tue -- 11:11 PM EDT     0.70 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Havre de Grace, Susquehanna River, Maryland (2), Tide feet

Full Color Weather Map

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