Sunrise 5:31 AM   Sunset 8:22 PM Moonrise 2:35 PM   Moonset 2:18 AM

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LOZ045 Mexico Bay To The Saint Lawrence River Along Lake Ontario- 640 Am Edt Sat May 18 2024
Today - East winds 5 to 10 knots becoming south. A chance of showers early, then patchy drizzle late this morning. Waves 1 foot or less. Tonight - South winds 10 knots or less becoming southeast. Partly cloudy. Waves 1 foot or less. Sunday - Southeast winds 10 knots or less becoming west. Sunny. Waves 1 foot or less. Sunday night - West winds less than 10 knots becoming south. Mainly clear in the evening, then becoming partly cloudy. Waves 1 foot or less. Monday - South winds 10 knots or less. Partly cloudy. Waves 1 foot or less. Tuesday - South winds 5 to 15 knots. Partly to mostly cloudy. Waves 2 feet or less. Wednesday - South winds 10 to 15 knots becoming southwest. A chance of showers during the day, then a chance of showers and Thunderstorms Wednesday night. Waves 2 feet or less.
winds and waves higher in and near Thunderstorms.

LOZ005
No data

FXUS61 KBGM 181931 AFDBGM

Area Forecast Discussion National Weather Service Binghamton NY 331 PM EDT Sat May 18 2024

SYNOPSIS
Rain showers this morning will become less widespread through the day. A few thunderstorms could develop in the western Southern Tier this afternoon but will quickly dissipate after sunset. Partly cloudy skies tonight will lead to some valley fog formation by Sunday Morning. Sunday is looking dry and much warmer than today.

NEAR TERM /THROUGH SUNDAY NIGHT/

300 PM Update

Showers and drizzle continue across areas east of I-81 as the shortwave trough slides to the SE. Showers should start to taper off this afternoon across this area as the trough leaves the region. Some clearing in the western Finger Lakes has allowed some instability to develop, diving some cellular showers across the area, moving from NW to SE. Shear is minimal and the instability is very shallow so severe weather is not expected.
Some brief localized heavy showers will occur but flash flooding is not expected. Temps today will vary by about 10 degrees across the area. Under the cloud shield across the eastern CWA, low 60s are expected. Where clouds and rain have cleared a bit, temps will climb into the upper 60s to near 70.

Showers dissipate across the region this evening. With the ridge moving in, combined with light winds and a very moist boundary layer, widespread fog is expected to develop tonight. Best chances will be across the Twin Tiers, where the highest moisture will be. Some fog should also develop in the western Mohawk Valley but how far east it spreads is uncertain given the lack of moisture in the area today. Temperatures will be in the mid 50s across the region.

Sunday will be a very nice spring day, with temperatures topping out in the mid to upper 70s and partly cloudy skies. A few isolated showers may pop up across the Twin Tiers, especially if we can get some clearing.

Sunday night should see some more patchy fog with high pressure, light winds and small dewpoint depressions across the region.
Temperatures will be nearly identical to Saturday night, with lows in the mid 50s.

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/

315 PM Update

High pressure will be over the region, the ridge likely to remain in place through the short term period. This will result in winds shifting to south-southwesterly gradually bringing in a warmer and slightly more humid airmass. Temperatures rise well above average, with highs 80 to 85 on Monday for most locations.
Warming up even a bit more on Tuesday, with highs well into the 80s areawide. There will be a slight chance for a thunderstorm over the western Finger Lakes Monday evening along the lake breeze front, then up north of I-90 Tuesday afternoon/evening.
This will be associated with a weak wave over the top of the ridge.Tuesday night is warm and muggy with lows in the upper 50s to mid-60s.

LONG TERM /WEDNESDAY THROUGH SATURDAY/

315 PM Update

The large ridge of high pressure still looks to be over the region Wednesday morning before being chipped away by an approaching cold front late in the day. This front then looks to break down the ridge by Thursday. Temperatures continue to trend warmer mid-week, with highs now 85 to 90 in the forecast Wednesday afternoon. Dew points are slightly humid in the lower 60s, this will keep heat indices close to the actual temperature and not much higher. Overnight lows are warm and muggy in the low to mid-60s Wednesday night.

Enough lift, moisture and instability looks present for at least some scattered showers & T'storms Wednesday evening out ahead of the main cold frontal passage. Exact timing and location of the prefrontal trough remains a little uncertain still. Instability during the afternoons is moderate, with surface CAPE currently modeled from about 500-1000 J/KG so some thunderstorms will be possible as well. Deep layer shear is only about 20-25 kts Wednesday afternoon.

If the current timing holds, the main cold front would pass through the region on Thursday. Out ahead of the front MLCAPE would be between 600-1200 J/kg, with deep layer shear increasing to 40-50 kts Thursday afternoon. This scenario could lead to some more organized thunderstorm activity. However, there are still some timing differences with the operational models and ensemble guidance with the frontal timing. Continued to lean more toward the slower ECMWF suite at this time. Given the timing differences it is still to early to determine the potential for any strong to severe thunderstorms.

After the front passes through, it looks to cool down and dry out Thursday night. Lows will dip down into the upper 40s to mid-50s. Friday is now forecast to be mainly dry with weak high pressure in place and seasonable temperatures. There remain many difference in the weather pattern by next Saturday; the model guidance seems to be trending toward a drier pattern for our area in the more recent runs. Confidence remains a bit low on just how the up coming Memorial Day weekend weather will play out. For now followed the NBM/Ensemble guidance which gives partly sunny skies and a low chance for scattered rain showers, with highs in the low to mid-70s next weekend.

AVIATION /19Z SATURDAY THROUGH THURSDAY/
Rain showers and drizzle continue across the region this afternoon, bringing MVFR to LIFR conditions to our terminals.
BGM and ITH will see conditions lift to Fuel Alt in the next couple of hours as the precipitation moves east of the area and some drier air tries to work its way in from the west.

A foggy night is in store as a ridge moves overhead, bringing light to calm winds across the area. BGM/ELM/ITH/SYR are expected to see IFR and lower fog develop tonight. While a lot of clearing is not expected, a very moist surface from today's rain will only need marginal cooling to get fog and low ceilings to develop.

AVP has a chance at fog as well, but confidence that the thicker fog works its way into the terminal from the valley is low so kept overnight restrictions to MVFR. RME has been out of the precipitation most of the day, with VFR conditions expected through the evening. This lack of recent surface moisture will inhibit fog development. If fog can develop, MVFR conditions are currently expected.

All terminals should slowly become VFR by mid-morning.

Outlook...

Sunday afternoon through Wednesday...Mainly VFR. Some showers possible by Wednesday.

BGM WATCHES/WARNINGS/ADVISORIES
PA...None.
NY...None.

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Sat -- 02:08 AM EDT     4.71 feet High Tide
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Sat -- 08:41 AM EDT     0.78 feet Low Tide
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Sat -- 03:28 PM EDT     Moonrise
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