Sunrise 6:08 AM   Sunset 8:07 PM Moonrise 1:45 AM   Moonset 11:29 AM

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ANZ538 Patapsco River Including Baltimore Harbor- 236 Pm Edt Wed May 1 2024
Rest of this afternoon - SW winds 5 kt. Waves flat. Tonight - S winds around 5 kt. Waves flat. Thu - W winds around 5 kt. Waves 1 ft or less. Thu night - N winds around 5 kt. Waves 1 ft or less. Fri - E winds 5 to 10 kt. Waves 1 ft. Fri night - E winds 5 to 10 kt. Waves 1 ft. Sat - E winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers, then showers likely after midnight. Sun - E winds 5 to 10 kt. Waves 1 ft. Showers likely through the day. A chance of showers through the night.

ANZ500 236 Pm Edt Wed May 1 2024
Synopsis for the tidal potomac and md portion of the chesapeake bay -
a cold front will move south and east of the waters today. High pressure briefly returns Thursday before another slow moving front crosses the local waters over the weekend. Unsettled conditions look to linger over the waters heading into early next week as additional fronts move through. Small craft advisories may be needed on both Friday and Saturday.

FXUS61 KCTP 011917 AFDCTP

Area Forecast Discussion National Weather Service State College PA 317 PM EDT Wed May 1 2024

SYNOPSIS
-Warm/dry weather with lower humidity into Thursday -Trending unsettled into the weekend with some periods of rain and thunderstorms Sat/Sun

NEAR TERM /UNTIL 6 AM THURSDAY MORNING/
Patches of clouds at different (generally higher) altitudes will drift across the CWA overnight. 5H heights rise and so do the 8H temps overnight. Expect decent but not great radiational cooling as winds go light, and even calm in deeper valleys. Did hint at some patchy valley fog late tonight, but that may be a stretch given the drying we had today/Wed. Current dewpoints in the L40s to L50s do rise a little by morning mainly due to stratification/loss of mixing. So, T-Td may touch briefly in the cooler north-central valleys before sunrise.

SHORT TERM /6 AM THURSDAY MORNING THROUGH 6 PM THURSDAY/
5H ridge crests overhead Thurs. Plenty of sunshine through only patchy clouds will allow good heating. The 8H/llvl temps fall a little across the N as a weak/dry cool front inches across the CWA We should add 5F onto maxes in the S compared to Wed, but the NW/Alleghenies may fall 3-5F short of Wed. While at least one HRRR member makes a spotty aftn shower or two across the S, we think the dryness of the airmass and healthy CINH will keep anything from reaching the ground.

LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/
Thursday night will remain dry and mild. 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 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 looks to bring increasing likelihood for a return of clouds and showers/storms for Tuesday and now Wednesday.

AVIATION /19Z WEDNESDAY THROUGH MONDAY/
High pressure is firmly in control for the overnight, and only spotty patches of clouds at various levels will cross the airpace over Central PA. Wind goes mainly light/variable. This could allow a very small amount of valley fog to form in the central valleys, and we have mentioned this (30%) possibility in the TAF for KIPT. The drying we had today/Wed will likely preclude fog at all other sites. The upper ridge will be overhead, keeping clouds to a minimum Thursday and into Friday.
A weak/dry backdoor cold front and any clouds it forces will make no changes to our VFR flying conditions into Friday.

Outlook...

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

Sat night-Sun...Widespread SHRA/TSRA expected. Reductions to IFR likely in RA/FG.

Mon...AM fog MVFR clouds poss W. PM SHRA poss.

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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Middle Branch
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Wed -- 01:17 AM EDT     1.03 feet High Tide
Wed -- 02:38 AM EDT     Moonrise
Wed -- 06:07 AM EDT     Sunrise
Wed -- 07:10 AM EDT     0.38 feet Low Tide
Wed -- 07:27 AM EDT     Last Quarter
Wed -- 12:26 PM EDT     Moonset
Wed -- 01:36 PM EDT     1.43 feet High Tide
Wed -- 08:00 PM EDT     Sunset
Wed -- 08:58 PM EDT     0.41 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Middle Branch, Baltimore Harbor, Maryland, Tide feet

Middle Branch, Baltimore Harbor, Patapsco River, Maryland, Tide feet

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