Alert archive / New York / Areal Flood Advisories in 2016

Areal Flood Advisory 3, NWS Buffalo, NY

December 18, 2016Wyoming County, New York

NWS Buffalo, NY issued this areal flood advisory at Dec 18, 2016, 6:33 AM EST for Wyoming County, New York. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Dec 18, 2016, 6:33 AM EST (11:33 UTC)
Expired: Dec 18, 2016, 10:30 AM EST
In force: 4 hr
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Wyoming County, NY

The radar

The Buffalo radar (KBUF), 50 km from the middle of the area, began a volume at 11:33 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

Pittsburgh, PA (KAGC), launched 00:00Z, 11.6 hours before the alert went out and 299 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 630 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 636 m²/s²
0-3 km storm-relative helicity: 672 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Buffalo, NY wrote its last area forecast discussion before this areal flood advisory went out at Dec 18, 6:25 AM EST, 8 minutes earlier.

Area forecast discussion, Dec 18, 6:25 AM EST, 8 minutes before

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Hazardous weather outlook, Dec 18, 3:50 AM EST, 2 hours 43 minutes before

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In the hours before

Special weather statement, Dec 18, 4:12 AM EST, 2 hours 21 minutes before

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Special weather statement, Dec 18, 4:14 AM EST, 2 hours 19 minutes before

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Special weather statement, Dec 18, 4:16 AM EST, 2 hours 17 minutes before

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Nearby

Areal Flood Advisories in New York, 2016 Every areal flood advisory in 2016

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.