A warm and unstable environment ahead of an approaching cold front supported the development of scattered thunderstorms. Weak steering winds contributed to slow moving storms repeating over the same areas which contributed to areas of heavy rainfall and flash flooding.
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 BGM wrote it up.
A warm and unstable environment ahead of an approaching cold front supported the development of scattered thunderstorms. Weak steering winds contributed to slow moving storms repeating over the same areas which contributed to areas of heavy rainfall and flash flooding. Several locations around central New York reported flooded roads along with washouts of culverts and small bridges.
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 Binghamton, NY wrote its last area forecast discussion before the first event at Jul 13, 12:49 PM EST, 4 hours 51 minutes earlier.
Area Forecast Discussion
National Weather Service Binghamton NY
149 PM EDT Sun Jul 13 2025
.SYNOPSIS...
A frontal boundary will slowly move eastward through the region
with showers and thunderstorms through Monday. High pressure
looks to briefly build into the region Tuesday before another
cold front sweeps through the region later this week.
&&
.NEAR TERM /THROUGH MONDAY NIGHT/...
A hot and humid airmass coupled with a slow moving cold front
will provide a favorable setup for the development of showers
and thunderstorms through most of the night. PW values are still
high from 1.5-2 inches maintaining the threat for heavy
downpours. However, shear values remain fairly low which will
lead to slow storm motions and potential training and
backbuilding of showers and thunderstorms. A few locations could
see 2-3 inches of rain in a couple of hours resulting in some
localized urban and flash flooding. A few localized downbursts
are still possible as well. The flood watch has been expanded
into most of CNY and the northern Tier of PA based on the
coverage shown on the latest 12Z set of mesoscale model
guidance. Indications are some showers and thunderstorms will
persist through the overnight as well.
A marine layer once again attempts to build into the region from
the south and southeast overnight. River valley locations
outside the marine layer that see rain today have the potential
for some patchy fog. Another muggy night with lows around 70.
With the slow frontal passage Monday temperatures do look
slightly cooler. Areas east of I-81 look to become unstable
again ahead of the front leading to an additional round of
showers and thunderstorms. Not much change in the overall setup
so heavy downpours and flooding are still a concern. 0-6 KM bulk
shear looks slightly higher so thunderstorms may be slightly
better organized with enough mid-level dry air for a downburst
or two. Slightly less muggy Monday night with lows in the mid
and upper 60's.
&&
.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
High pressure noses into the region Tuesday into the first part
of Wednesday. This looks to squeeze any thunderstorm chances
near and south of the Scranton area Tuesday afternoon and
evening. Southern portions of the area also look to have the
highest chance for any pop-up thunderstorms Wednesday afternoon
and evening. With high amounts of modeled instability Wednesday
afternoon some downburst potential exists as well in addition to
heavy rainfall. Modeled 925 mb temperatures still indicate
highs around 90 each afternoon. Lowered NBM dewpoints once again
each afternoon based on recent biases. Still heat index values
get close to 95 for some valley locations in CNY. Muggy lows
around 70.
&&
.LONG TERM /THURSDAY THROUGH SUNDAY/...
Ensemble guidance has trended slower with the passage of the
next cold front with it looking like a Friday passage now. This
would continue to keep a similar pattern to Wednesday going with
muggy lows near 70, highs pushing 90. The enviroment ahead of
the front should be sufficient for multiple rounds of showers
and thunderstorms. Both heavy rainfall and strong to severe
thunderstorm threats may become realized as we get closer in
time. Cooling and drying trend next weekend after the frontal
passage. Some upper level energy may keep a few showers around
though.
&&
.AVIATION /17Z SUNDAY THROUGH THURSDAY/...
Showers and thunderstorms are already starting to develop near
KELM and KITH. So the timing may be sooner than indicated in the
TEMPO groups. Timing is also tricky because there is decent
potential for multiple rounds of showers and thunderstorms
through this evening at all TAF sites. An MVFR cloud deck looks
to build into KAVP overnight and possibly into KBGM,KRME and
KITH. KELM looks far enough west to where valley fog is a higher
concern overnight. Ceilings should burn off by mid-morning with
KAVP being the latest in terms of timing. Additional showers
and thunderstorms may reform near KAVP and KBGM in the afternoon
hours Monday as well.
Outlook...
Monday afternoon and night... Restrictions possible from
scattered showers and thunderstorms, especially in the
afternoon. Highest chances look to be at BGM and AVP.
Tuesday through Wednesday... Mainly VFR. A spotty thunderstorm
with restrictions can not be ruled out Wednesday afternoon.
Thursday and Friday... Restrictions likely with a few rounds of showers
and thunderstorms.
&&
.BGM WATCHES/WARNINGS/ADVISORIES...
PA...Flood Watch through late tonight for PAZ038>040.
NY...Flood Watch through late tonight for NYZ009-015>018-022>025-
036-037-044>046-055>057-062.
&&
SYNOPSIS...MWG
NEAR TERM...MWG
SHORT TERM...MWG
LONG TERM...MWG
AVIATION...MWGHazardous Weather Outlook National Weather Service Binghamton NY 1030 AM EDT Sun Jul 13 2025 NYZ024-044>046-055>057-062-PAZ038>040-141430- Chemung-Cortland-Chenango-Otsego-Tioga-Broome-Delaware-Sullivan- Bradford-Susquehanna-Northern Wayne- 1030 AM EDT Sun Jul 13 2025 ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... This Hazardous Weather Outlook is for central New York and northeast Pennsylvania. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Some thunderstorms could produce gusty to damaging winds later this afternoon and tonight. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional scattered showers and storms Monday can again produce heavy downpours and be slow-moving and could lead to isolated instances of flash flooding, especially in low-lying and poor drainage areas. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. Please relay any information about severe weather to the NWS. PAZ043-044-047-048-072-141430- Wyoming-Lackawanna-Luzerne-Pike-Southern Wayne- 1030 AM EDT Sun Jul 13 2025 This Hazardous Weather Outlook is for northeast Pennsylvania. .DAY ONE...Today and tonight. Scattered showers and thunderstorms are expected this afternoon and evening. Some of the storms could produce gusty winds and torrential downpours, with isolated instances of flash flooding possible due to slow-moving or training thunderstorms. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional scattered showers and storms Monday can again produce heavy downpours and be slow-moving and could lead to isolated instances of flash flooding, especially in low-lying and poor drainage areas. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. Please relay any information about severe weather to the NWS. NYZ009-015>018-022-023-025-036-037-141430- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Tompkins-Madison-Southern Oneida- 1030 AM EDT Sun Jul 13 2025 ...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... This Hazardous Weather Outlook is for central New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. A few thunderstorms can produce gusty to damaging winds as well this afternoon and evening. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. Please relay any information about severe weather to the NWS.
Special Weather Statement
National Weather Service Binghamton NY
217 PM EDT Sun Jul 13 2025
NYZ024-025-055-131900-
Chemung NY-Tioga NY-Tompkins NY-
217 PM EDT Sun Jul 13 2025
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN CHEMUNG...
NORTHWESTERN TIOGA AND SOUTHEASTERN TOMPKINS COUNTIES THROUGH 300 PM
EDT...
At 216 PM EDT, Doppler radar was tracking a strong thunderstorm near
Newfield, or 8 miles south of Ithaca, moving northeast at 15 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 hail damage to vegetation is
possible.
Locations impacted include...
Ithaca, Newfield, Cayuga Heights, Lansing, Danby, Caroline, Dryden,
Richford, Spencer, and Van Etten.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm 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 4256 7639 4243 7625 4241 7625 4241 7622
4236 7617 4216 7662 4224 7665 4225 7662
4228 7662 4229 7667 4234 7669 4236 7669
TIME...MOT...LOC 1816Z 240DEG 15KT 4232 7655
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
MJMSpecial Weather Statement National Weather Service Binghamton NY 244 PM EDT Sun Jul 13 2025 NYZ009-015>018-022>025-036-037-044-055-PAZ038-132200- Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben- Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Tioga- Bradford- 244 PM EDT Sun Jul 13 2025 ...SCATTERED STRONG TO SEVERE THUNDERSTORMS WILL IMPACT THE AREA THIS AFTERNOON AND EVENING... Thunderstorms are now developing across the area and will continue to move slowly north and eastward into the late afternoon and evening hours. Some storms may produce torrential downpours, strong gusty winds and frequent cloud to ground lightning. Isolated to scattered instances of flash flooding could occur where storms stall, back build or train over the same locations. If outdoors remain weather aware and have a plan on what to do if strong to severe thunderstorms strike. Stay tuned to our website, weather.gov/bgm, our weather radio or other trusted media outlets for the latest watch and warning information. MJM
<!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>The Binghamton radar (KBGM), 17 km away, was scanning. The volume nearest the first event began at 22:39 UTC.
11 flash flood. Local standard time, as filed.
Caldwell Hill Road was closed due to a washout.
Water was flowing on roads.
Water was rising over Rock Street up to the porch level.
Water was flowing on roads, making them impassible.
There were multiple reports of people trapped in residences due to rising water in the village of Newark Valley.
Water was reported up to first floor windows at several residences.
Nanticoke Road has water over it and is closed to all traffic.
Route 26 was closed due to flooding.
Water was ponding deep across the whole the road on East High Street in Painted Post.
Flooding was reported in both directions on Route 7. All lanes were blocked.
Flooding washed out the intersection of Dufton Hollow Road and State Highway 268 north of the Village of Hancock.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2025Every state in 2025This day in weather historyWarnings in New York, July 2025
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 2026-09-30. Each event’s entry at NCEI: 1285706, 1285707, 1285709, 1285710, 1285711, 1285712, 1285713, 1285714, 1285722, 1285725, 1285738.