Alert archive / New York / Areal Flood Advisories in 2021

Areal Flood Advisory 2, NWS Buffalo, NY

July 19, 2021Monroe County, New York

NWS Buffalo, NY issued this areal flood advisory at Jul 19, 2021, 6:52 AM EDT for Monroe County, New York. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Jul 19, 2021, 6:52 AM EDT (10:52 UTC)
Expired
Jul 19, 2021, 3:51 PM EDT
In force
9 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Monroe County, NY

The radar

The Buffalo radar (KBUF), 102 km from the middle of the area, began a volume at 10:58 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 10.9 hours before the alert went out and 99 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, Buffalo Intl Airport, NY at 00:00Z on 2021-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 474 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2021-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.1939Sfc1 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
474 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1239 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

099 
WGUS81 KBUF 191052
FLSBUF

Flood Advisory
National Weather Service Buffalo NY
652 AM EDT Mon Jul 19 2021

NYC055-192245-
/O.NEW.KBUF.FA.Y.0002.210719T1052Z-210719T2245Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe NY-
652 AM EDT Mon Jul 19 2021

The National Weather Service in Buffalo has issued a

* Flood Advisory for...
  East Central Monroe County in western New York...

* Until 645 PM EDT Monday.

* At 652 AM EDT, the gauge on Irondequoit Creek reported a level of 
  9.2 feet with this level dropping slowly. Water levels will drop 
  slowly today, but still will remain high enough to cause minor 
  flooding in and around Ellison Park.

* Some locations that will experience flooding include...
  Irondequoit Creek in the town of Penfield

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Roads and hiking paths along Irondequoit Creek may be flooded. Never 
drive of walk around barriers blocking off roads and hiking paths 
due to flooding.

Keep children away from storm drains, culverts, creeks and streams. 
Water levels can rise rapidly and sweep children away.

&&

LAT...LON 4311 7752 4318 7755 4319 7751 4313 7746

$$

Apffel
1 follow-up statement
086 
WGUS81 KBUF 191951
FLSBUF

Flood Advisory
National Weather Service Buffalo NY
351 PM EDT Mon Jul 19 2021

NYC055-192001-
/O.CAN.KBUF.FA.Y.0002.000000T0000Z-210719T2245Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe NY-
351 PM EDT Mon Jul 19 2021

...FLOOD ADVISORY IS CANCELLED FOR EAST CENTRAL MONROE COUNTY...

Flood waters along Irondequoit Creek are receding. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road and trail closures in Ellison Park.

LAT...LON 4311 7752 4318 7755 4319 7751 4313 7746

$$

Hitchcock

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 8:32 PM EDTSpecial Weather StatementBUFGenesee, Wyoming43 min

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.