A cold front crossing the region along with building instability resulted in a line of severe thunderstorms sweeping east from the Genesee valley and northern Finger Lakes on into the North Country during the afternoon. Numerous reports of wind damage were received.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BUF wrote it up.
A cold front crossing the region along with building instability resulted in a line of severe thunderstorms sweeping east from the Genesee valley and northern Finger Lakes on into the North Country during the afternoon. Numerous reports of wind damage were received.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Buffalo, NY wrote its last area forecast discussion before the first event at Jul 13, 10:11 AM EST, 1 hour 27 minutes earlier.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Special Weather Statement
National Weather Service Buffalo NY
1143 AM EDT Thu Jul 13 2023
NYZ003-004-011>014-020-021-131645-
Cattaraugus NY-Allegany NY-Ontario NY-Livingston NY-Wyoming NY-
Wayne NY-Genesee NY-Monroe NY-
1143 AM EDT Thu Jul 13 2023
...STRONG THUNDERSTORMS WILL IMPACT WESTERN WAYNE...WYOMING...EASTERN
CATTARAUGUS...LIVINGSTON...NORTHWESTERN ALLEGANY...MONROE...EASTERN
GENESEE AND NORTHWESTERN ONTARIO COUNTIES THROUGH 1245 PM EDT...
At 1143 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Hilton to near Pavilion to near Ashford
Hollow. Movement was southeast at 30 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Rochester, Greece, Irondequoit, Chili, Olean, Geneseo, East
Rochester, Hilton, Webster, Fairport, Dansville, Brighton,
Gates-North Gates, Letchworth State Park, Ontario, Henrietta,
Penfield, Le Roy, Perry, and Spencerport.
This includes the following highways...
Interstate 390 between exits 5 and 12.
Interstate 90 between exits 44 and 47.
Interstate 86 between exits 25 and 29.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4203 7837 4228 7881 4252 7853 4254 7846
4258 7846 4289 7810 4338 7775 4328 7754
4333 7730 4330 7716 4268 7755
TIME...MOT...LOC 1543Z 297DEG 26KT 4336 7773 4288 7807 4233 7872
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
EAJThe Buffalo radar (KBUF), 114 km away, was scanning. The volume nearest the first event began at 16:34 UTC.
15 thunderstorm wind, 1 hail. Local standard time, as filed.
A large tree was downed at a golf course.
A tree was downed over the road.
A tree was downed over the road.
Received a report that 600 acres of corn was flattened between Ellisburg and Belleville along Route 289.
Trees and wires were downed.
Trees and wires were downed.
Trees and wires were downed.
Trees and wires were downed.
Penny sized hail was observed.
Trees were downed over Bradbury Road.
Trees and wires were downed on Park Ave.
Trees and wires were downed on State Route 177.
Trees and wires were downed near the intersection of West Road and Gardner Road.
Trees and wires were downed in the town of Watson.
Trees were downed on power poles.
Trees and wires were downed on River Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2023Every state in 2023This day in weather historyWarnings in New York, July 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1117206, 1117189, 1117196, 1117204, 1117190, 1117191, 1117192, 1117194, 1117205, 1117195, 1117199, 1117200, 1117201, 1117202, 1117198, 1117203.