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New York, Tioga

Severe Thunderstorm Watch

Statement as of 3:40 PM EDT on May 22, 2013

Expires 11:00 PM EDT on May 22, 2013


The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
western New York
northeastern Pennsylvania
Lake Erie
Lake Ontario

* effective this Wednesday afternoon and evening from 340 PM
until 1100 PM EDT.

* Primary threats include...
several damaging wind gusts to 70 mph possible
several large hail events to 1.5 inches in diameter possible
a few tornadoes possible

The Severe Thunderstorm Watch area is approximately along and 70
statute miles north and south of a line from 30 miles west of
Buffalo New York to 15 miles southeast of Utica New York. For a
complete depiction of the watch see the associated watch outline
update (wous64 kwns wou2).

Precautionary/preparedness actions...

Remember... a Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings. Severe thunderstorms can and occasionally
do produce tornadoes.


Other watch information... continue... ww 210... ww 211...

Discussion... large-scale forcing for upward vertical motion ahead of
a short wave impulse moving northeast of the lower Ohio Valley is
expected to contribute to increasing thunderstorm development late
this afternoon and evening. In the presence of weak to moderate
instability... deep layer shear will be supportive of organized
convective development. A window of opportunity appears to exist
for discrete supercell development... as southerly 850 mb flow
strengthens... with one or two tornadoes not out of the question.
However... this threat is expected to be short-lived and fairly
localized... as boundary layer mixing has resulted in sizable
temperature/dew point spreads... which probably will allow outflow to
quickly undercut mesocylones.

Aviation... a few severe thunderstorms with hail surface and aloft
to 1.5 inches. Extreme turbulence and surface wind gusts to 60
knots. A few cumulonimbi with maximum tops to 500. Mean storm
motion vector 26035.


... Kerr

Weather Severe Map
Alabama - Public Information Statement
Alaska - Areal Flood Warning , Areal Flood Watch , Special Statement , Record Report
Arizona - Wind Advisory , Fire Weather Warning , Record Report
Arkansas - Flood Warning , Flood Advisory , Record Report , Public Information Statement
California - High Surf Advisory , Wind Advisory , Freeze Watch , Freeze Warning , Frost Advisory , Air Quality Alert , Record Report , Public Information Statement
Colorado - Fire Weather Warning
Connecticut - Severe Thunderstorm Watch , Public Information Statement
District of Columbia - Public Information Statement
Florida - Areal Flood Advisory , Fire Weather Watch , Special Statement , Special Weather Statement
Georgia - Severe Thunderstorm Warning , Flood Warning , Special Statement , Record Report , Public Information Statement
Hawaii - High Surf Advisory , Wind Advisory
Idaho - Areal Flood Advisory , Lake Wind Advisory , Frost Advisory , Record Report , Public Information Statement
Illinois - Flood Warning , Areal Flood Advisory , Flood Advisory , Public Information Statement
Indiana - Record Report , Public Information Statement
Iowa - Flood Warning , Public Information Statement
Kansas - Areal Flood Advisory , Public Information Statement
Kentucky - Severe Thunderstorm Watch , Severe Thunderstorm Warning , Special Statement , Record Report , Public Information Statement
Louisiana - Areal Flood Warning , Areal Flood Warning , Flood Warning , Special Weather Statement , Special Statement , Record Report , Public Information Statement
Maryland - Severe Thunderstorm Watch , Public Information Statement
Massachusetts - Severe Thunderstorm Watch , Flood Warning , Special Weather Statement , Public Information Statement
Michigan - Areal Flood Advisory , Areal Flood Advisory , Special Statement , Special Weather Statement , Record Report , Public Information Statement
Minnesota - Flood Warning , Record Report , Public Information Statement
Mississippi - Flood Warning , Flood Advisory , Record Report , Public Information Statement
Missouri - Flood Warning , Flood Advisory , Record Report , Public Information Statement
Montana - Lake Wind Advisory , Winter Weather Advisory , Winter Storm Watch , Public Information Statement
Nebraska - Public Information Statement
Nevada - Fire Weather Warning , Hard Freeze Warning , Record Report
New Hampshire - Severe Thunderstorm Watch , Special Weather Statement
New Mexico - Fire Weather Watch
New York - Severe Thunderstorm Watch , Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flash Flood Warning , Flood Warning, Flash Flood Warning , Areal Flood Advisory , Special Weather Statement , Special Statement , Public Information Statement
North Carolina - Severe Thunderstorm Warning , Flash Flood Warning , Areal Flood Advisory , Special Weather Statement , Special Statement , Record Report , Public Information Statement
North Dakota - Flood Warning , Flood Warning, Areal Flood Warning , Flash Flood Watch , Flood Watch , Wind Advisory , Public Information Statement
Ohio - Severe Thunderstorm Watch , Record Report , Public Information Statement
Oklahoma - Flood Warning, Areal Flood Warning , Flood Warning , Areal Flood Warning , Areal Flood Warning , Flood Advisory , Record Report , Public Information Statement
Oregon - Winter Weather Advisory , Frost Advisory , Freeze Watch , Record Report
Pennsylvania - Severe Thunderstorm Watch , Severe Thunderstorm Watch , Public Information Statement
Puerto Rico - Areal Flood Advisory
South Carolina - Severe Thunderstorm Warning , Flood Warning , Record Report , Public Information Statement
South Dakota - Public Information Statement
Tennessee - Severe Thunderstorm Warning , Flood Warning , Areal Flood Advisory , Flood Advisory , Record Report , Public Information Statement
Texas - Flood Warning , Special Statement , Record Report , Public Information Statement
Vermont - Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flood Warning, Flash Flood Warning , Special Statement , Public Information Statement
Virginia - Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flash Flood Warning , Areal Flood Advisory , Record Report , Public Information Statement
Washington - Areal Flood Advisory , Flood Watch , Winter Weather Advisory , Winter Storm Warning , Record Report , Public Information Statement
West Virginia - Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flash Flood Warning , Areal Flood Advisory , Special Weather Statement , Special Statement , Record Report , Public Information Statement
Wisconsin - Flood Warning , Areal Flood Advisory , Freeze Watch , Record Report , Public Information Statement
- Severe Thunderstorm Watch
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