Alert archive / New York / Areal Flood Advisories in 2011
Areal Flood Advisory 21, NWS Albany, NY
NWS Albany, NY issued this areal flood advisory at May 16, 2011, 12:52 PM EDT for Greene County, Ulster County, New York. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 16, 2011, 12:52 PM EDT (16:52 UTC)
- Expired
- May 16, 2011, 3:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS Albany, NY
- Area
- Storm-based polygon
Counties Greene County, NY, Ulster County, NY
The radar
The Albany radar (KENX), 57 km from the middle of the area, began a volume at 16:55 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
Brookhaven, NY (KOKX), launched 12:00Z, 4.9 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 421 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 234 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The office that day
Everything else NWS Albany, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 11:26 AM EDT | Areal Flood Advisory | ALY | Albany, Rensselaer, Saratoga, Schenectady, Washington | 3 hr |
| May 16, 12:41 PM EDT | Areal Flood Advisory | ALY | Saratoga, Warren, Washington | 3 hr |
| May 16, 3:33 PM EDT | Flood Watch | ALY | Columbia, Dutchess, Greene, Schoharie, Ulster | 61 hr |
| May 16, 3:47 PM EDT | Areal Flood Advisory | ALY | Saratoga, Warren, Washington | 3 hr |
Nearby
Areal Flood Advisories in New York, 2011Every areal flood advisory in 2011
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.