Special Weather Statement, NWS Binghamton, NY

Area Forecast Discussion
National Weather Service Binghamton NY
319 PM EDT Tue Aug 6 2019

.SYNOPSIS...
Prefrontal trough is pushing through the region today with
scattered showers and thunderstorms through this evening and
into tonight. Some storms may contain gusty winds and heavy
downpours. Wednesday and Thursday will also be unsettled with
more showers and storms as upper trough and cold front comes
through, but high pressure builds back in by the weekend.

&&

.NEAR TERM /THROUGH WEDNESDAY NIGHT/...

Scattered thunderstorms are firing this afternoon along the axis
of a prefrontal trough pushing through the region. With PWATs in
the 1.75" range and DCAPE values near 1000 J/kg, some storms may
contain localized strong gusty winds. However, with the lack of
shear, only 20 knots from 0-6 km, the convection remains very
disorganized and continues pulsing up and down. The short wave
should cross the region by later this evening, so overnight,
there will be a lack of forcing and with the loss of diurnal
heating, activity will diminish from widespread to more just widely
scattered showers and thunderstorms.

For tomorrow, showers and storms are expected again. However,
the latest model guidance has first short wave coming through
our area late morning through early afternoon now. Although we
remain in a marginal risk by SPC, we may not have time to
destabilize enough tomorrow afternoon when next wave arrives.
Forecast soundings show modest CAPE near 1000 J/kg and shear a
little stronger than today in the 25-30 knot range for 0-6 km.
Also, the higher PWATs are lining up further east into the
Hudson Valley, but NAM soundings still topping out around 1.5"
for most areas. Thinking if we do see any water issues, it will
be localized and most likely in the Catskills and Poconos
Region. WPC also has our region highlighted in a marginal for
excessive rainfall, but threat is trending further east as
mentioned with latest model guidance.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
A reprieve from showers and thunderstorms Thursday morning will
be relatively short- lived as another round of showers and
storms moves in Thursday afternoon/evening associated with
another embedded wave rounding the bottom of a larger upper
trough over eastern Canada. This front will be faster and have
less moisture to work with. However, the timing of the frontal
passage could work positively with the afternoon
heating/destabilization enough to trigger more than anticipated
convective showers and storms. The best chance appears to be
across the Finger Lakes into the wrn Catskills into Thur
evening. Temperatures will be mild/seasonal on Thursday with
highs in the lower to mid 80s...and dew points in the 60s.

An even drier air mass arrives Friday, but another sharp upper
wave...even amplifying a bit as it rotates through the ern Great
Lakes into NY...could be enough to trigger an isolated shower in the
afternoon. Temperatures on Friday will be noticeably cooler with
highs only into the mid/upper 70s...and dew points in the mid
50s.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
The weekend is expected to be very pleasant with mild temperatures,
low humidity and nearly zero or very low chances for afternoon
convection. Rising heights aloft and a rather deep layer of dry air
advecting in from the west should keep skies mostly sunny in the day
and generally clear overnight all the way into early next week.
COuld be a few showers and thunderstorms by early next week.
However, a decent spread in ensemble guidance is present keeping
these chances fairly low for the time being.

&&

.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
Timing of showers and thunderstorms is the main forecast problem
for this afternoon and into this evening. These storms could
bring brief IFR conditions if they were to come over any
particular site. Depending on where rain falls today, moisture
could form restrictions overnight with low ceilings but
confidence is too low at this time to add IFR ceiling at any one
location.

Outlook...

Wednesday through Thursday night...Restrictions possible in
scattered showers and thunderstorms, especially during the afternoon-
evening. Depending on where the rain falls, moisture may cause
overnight-early morning restrictions as well.

Friday through Sunday...Mainly VFR.

&&

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

&&

SYNOPSIS...MPK
NEAR TERM...MPK
SHORT TERM...BJT/MWG
LONG TERM...BJT/MWG
AVIATION...MPK

Hazardous Weather Outlook
National Weather Service Binghamton NY
324 PM EDT Tue Aug 6 2019

NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-
044-047-048-072-071930-
Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben-
Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango-
Otsego-Tioga-Broome-Delaware-Sullivan-Bradford-Susquehanna-
Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike-Southern Wayne-
324 PM EDT Tue Aug 6 2019

This Hazardous Weather Outlook is for central New York and
northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms continue this afternoon into this evening. A
few of the storms could contain gusty winds and heavy downpours.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thunderstorms are likely again on Wednesday. The strongest storms
could contain strong gusty winds and locally heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

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Special Weather Statement
National Weather Service Binghamton NY
357 PM EDT Tue Aug 6 2019

NYZ062-PAZ040-062030-
Sullivan NY-Northern Wayne PA-
357 PM EDT Tue Aug 6 2019

...STRONG THUNDERSTORM WILL AFFECT...NORTHWESTERN SULLIVAN AND EAST
CENTRAL WAYNE COUNTIES UNTIL 430 PM EDT...

At 356 PM EDT, Doppler radar was tracking a strong thunderstorm over
Damascus, or 10 miles northeast of Honesdale, moving northeast at 25
mph.

Small hail and strong wind gusts will be possible with this storm.

Locations impacted include...
Monticello, Bethel, Damascus, Callicoon, Cochecton, Jeffersonville,
Fosterdale, White Sulphur Springs, Swan Lake and Hortonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4161 7514 4170 7519 4189 7485 4165 7470
TIME...MOT...LOC 1956Z 245DEG 20KT 4167 7509

RRM

Special Weather Statement
National Weather Service Binghamton NY
416 PM EDT Tue Aug 6 2019

NYZ017-023>025-044-055-062045-
Chemung NY-Cortland NY-Southern Cayuga NY-Schuyler NY-Tioga NY-
Tompkins NY-
416 PM EDT Tue Aug 6 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT...SOUTHEASTERN
SCHUYLER...SOUTHEASTERN CAYUGA...NORTHWESTERN CORTLAND...NORTHEASTERN
CHEMUNG...NORTHWESTERN TIOGA AND TOMPKINS COUNTIES UNTIL 445 PM
EDT...

At 416 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Sempronius to near Cayuta. Movement was east at
20 mph.

Strong wind gusts will be possible with these storms.

Locations impacted include...
Ithaca, Cortland, Newfield, Cayuga Heights, Lansing, Danby, Homer,
Caroline, Groton and Dryden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with these storms, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4276 7625 4279 7595 4220 7646 4222 7678
TIME...MOT...LOC 2016Z 278DEG 17KT 4271 7633 4225 7676

JAB