Alert archive / New York / Areal Flood Advisories in 2021

Areal Flood Advisory 101, NWS Albany, NY

August 1, 20214 counties in New York

NWS Albany, NY issued this areal flood advisory at Aug 1, 2021, 4:17 PM EDT for 4 counties in New York. It was in force for 98 min.

The area

The counties it named.

The facts

Issued
Aug 1, 2021, 4:17 PM EDT (20:17 UTC)
Expired
Aug 1, 2021, 5:55 PM EDT
In force
98 min
Issued by
NWS Albany, NY
Area
Storm-based polygon

Counties Fulton County, NY, Hamilton County, NY, Saratoga County, NY, Warren County, NY

The radar

The Albany radar (KENX), 86 km from the middle of the area, began a volume at 20:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.3 hours before the alert went out and 79 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2021-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2021-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1357 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Albany, NY wrote its last area forecast discussion before this areal flood advisory went out at Aug 1, 4:17 PM EDT, 0 minutes earlier.

Area forecast discussion, Aug 1, 4:17 PM EDT, 0 minutes before
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Hazardous weather outlook, Aug 1, 4:10 AM EDT, 12 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Albany NY
410 AM EDT Sun Aug 1 2021

VTZ013>015-021100-
Bennington-Western Windham-Eastern Windham-
410 AM EDT Sun Aug 1 2021

...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
LATE TONIGHT...

This Hazardous Weather Outlook is for southern Vermont.

.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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Widespread hazardous weather is low at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are requested to relay rainfall and flooding reports to the
National Weather Service in Albany New York.

NYZ032-033-038>043-047>054-058>061-063>066-082>084-021100-
Northern Herkimer-Hamilton-Southern Herkimer-Southern Fulton-
Montgomery-Northern Saratoga-Northern Warren-Northern Washington-
Schoharie-Western Schenectady-Eastern Schenectady-Southern Saratoga-
Western Albany-Eastern Albany-Western Rensselaer-Eastern Rensselaer-
Western Greene-Eastern Greene-Western Columbia-Eastern Columbia-
Western Ulster-Eastern Ulster-Western Dutchess-Eastern Dutchess-
Northern Fulton-Southeast Warren-Southern Washington-
410 AM EDT Sun Aug 1 2021

This Hazardous Weather Outlook is for east central New York.

.DAY ONE...Today and tonight.

There is a Marginal Risk of severe thunderstorms this afternoon and
evening. The main threat would be damaging wind gusts. Furthermore,
some of rainfall could be moderate to heavy at times with flooding
impacts. Stay tuned for further updates from your National Weather
Service.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Widespread hazardous weather is low at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today into this evening.

CTZ001-013-MAZ001-025-021100-
Northern Litchfield-Southern Litchfield-Northern Berkshire-
Southern Berkshire-
410 AM EDT Sun Aug 1 2021

This Hazardous Weather Outlook is for northwestern Connecticut and
western Massachusetts.

.DAY ONE...Today and tonight.

There is a chance for thunderstorms later today into this evening.
Some of these storms may contain gusty winds and moderate to heavy
rainfall. Stay tuned for further updates from your National Weather
Service.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Widespread hazardous weather is low at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time. However, spotters
are encouraged to relay reports of rainfall, flooding and wind
impacts to the National Weather Service in Albany New York.

In the hours before

Special weather statement, Aug 1, 2:38 PM EDT, 1 hour 39 minutes before
Special Weather Statement
National Weather Service Albany NY
238 PM EDT Sun Aug 1 2021

NYZ040-047-048-011915-
Schoharie-Western Schenectady-Montgomery-
238 PM EDT Sun Aug 1 2021

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN
SCHENECTADY...NORTHERN SCHOHARIE AND SOUTHEASTERN MONTGOMERY
COUNTIES...

At 238 PM EDT, strong thunderstorms were clustered over
Richmondville, or near Cobleskill, moving northeast at 35 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Cobleskill, Summit, Schoharie, Richmondville, Central Bridge, Glen,
Carlisle, Sharon, Seward, Charleston, Esperance, Zeh Corners, Beekman
Corners, West Richmondville, Rockwell Corners, Warnerville, Flat
Creek, Gardnersville, Market Corners and Becker Corners.

This includes Interstate 88 between exits 20 and 23.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4262 7463 4266 7464 4296 7451 4282 7414
      4250 7450 4257 7467
TIME...MOT...LOC 1838Z 211DEG 29KT 4263 7456

Rathbun
Special weather statement, Aug 1, 3:23 PM EDT, 54 minutes before
Special Weather Statement
National Weather Service Albany NY
323 PM EDT Sun Aug 1 2021

NYZ033-039-041-042-082-012000-
Southern Fulton-Hamilton-Northern Fulton-Northern Warren-Northern
Saratoga-
323 PM EDT Sun Aug 1 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN HAMILTON...WEST
CENTRAL WARREN...EASTERN FULTON AND NORTHWESTERN SARATOGA COUNTIES...

At 323 PM EDT, a strong thunderstorm was located near Caroga Lake, or
10 miles north of Gloversville, moving northeast at 30 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Gloversville, Johnstown, Edinburg, Northville, Mayfield, Wells,
Cranberry Creek, Day Center, Northampton Beach Public Campground,
Sacandaga Campground, Berkshire, Bleecker, Harrisburg, Hope, Arietta,
Benson, Meco, Girards Sugarbush, Munsonville and Tenantville.

LAT...LON 4329 7462 4358 7419 4321 7387 4311 7410
      4312 7412 4311 7412 4298 7441 4298 7449
      4313 7444
TIME...MOT...LOC 1923Z 231DEG 27KT 4320 7439

MSE
Special weather statement, Aug 1, 4:10 PM EDT, 7 minutes before
Special Weather Statement
National Weather Service Albany NY
410 PM EDT Sun Aug 1 2021

NYZ040-047-012045-
Schoharie-Montgomery-
410 PM EDT Sun Aug 1 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SCHOHARIE AND SOUTH
CENTRAL MONTGOMERY COUNTIES...

At 410 PM EDT, a strong thunderstorm was located near Richmondville,
or 8 miles west of Cobleskill, moving east at 30 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Cobleskill, Middleburgh, Summit, Schoharie, Richmondville, Sharon
Springs, Central Bridge, Glen, Carlisle, Sharon, Seward, Charleston,
Esperance, Zeh Corners, Beekman Corners, West Richmondville, Rockwell
Corners, Warnerville, Flat Creek and Engleville.

This includes Interstate 88 between exits 20 and 23.

LAT...LON 4262 7463 4265 7463 4275 7467 4279 7466
      4291 7433 4276 7426 4275 7431 4271 7427
      4272 7425 4261 7420 4260 7422 4250 7469
      4252 7471
TIME...MOT...LOC 2010Z 249DEG 25KT 4270 7465

MSE
Local storm report, Aug 1, 4:13 PM EDT, 4 minutes before
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The office that day

Everything else NWS Albany, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 3:18 AM EDTFlash Flood WatchALYAlbany, Fulton, Hamilton, Herkimer, Montgomery, Rensselaer and 5 more19 hr
Aug 1, 2:38 PM EDTSpecial Weather StatementALYMontgomery, Schoharie37 min
Aug 1, 3:23 PM EDTSpecial Weather StatementALYFulton37 min
Aug 1, 3:33 PM EDTAreal Flood AdvisoryALYFulton, Montgomery2 hr
Aug 1, 3:38 PM EDTSevere Thunderstorm WarningALYFulton, Saratoga36 min
Aug 1, 4:10 PM EDTSpecial Weather StatementALYSchoharie35 min
Aug 1, 5:17 PM EDTSpecial Weather StatementALYWindham28 min
Aug 1, 5:24 PM EDTAreal Flood AdvisoryALYBennington, Windham3 hr
Aug 1, 5:40 PM EDTFlash Flood WarningALYBennington, Windham3 hr
Aug 1, 5:53 PM EDTSpecial Weather StatementALYWindham37 min
Aug 1, 6:15 PM EDTFlash Flood WarningALYWindham3 hr

Nearby

Areal Flood Advisories in New York, 2021Every areal flood advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.