Alert archive / Pennsylvania / Flash Flood Watches in 2011

Flash Flood Watch 10, NWS Binghamton, NY

September 23, 2011Delaware County, Sullivan County, New York; 6 counties in Pennsylvania

NWS Binghamton, NY issued this flash flood watch at Sep 23, 2011, 12:42 PM EDT for Delaware County, Sullivan County, New York; 6 counties in Pennsylvania. It took effect at Sep 23, 2011, 1:00 PM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Sep 23, 2011, 12:42 PM EDT (16:42 UTC)
In effect from: Sep 23, 2011, 1:00 PM EDT
Expired: Sep 23, 2011, 10:00 PM EDT
In force: 9 hr
Issued by: NWS Binghamton, NY
Flood severity: None

Counties Delaware County, NY, Sullivan County, NY, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 80 km from the middle of the area, began a volume at 16:41 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, 4.7 hours before the alert went out and 179 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 692 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 97 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 flash flood watch went out, 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 this flash flood watch went out at Sep 23, 10:20 AM EDT, 2 hours 22 minutes earlier.

Area forecast discussion, Sep 23, 10:20 AM EDT, 2 hours 22 minutes before

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Hazardous weather outlook, Sep 23, 10:42 AM EDT, 2 hours before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 23, 12:07 PM EDT	Areal Flood Advisory	BGM	Sullivan	3 hr
Sep 23, 1:50 PM EDT	Flash Flood Warning	BGM	Luzerne	6 hr
Sep 23, 3:51 PM EDT	Areal Flood Advisory	BGM	Wyoming	4 hr
Sep 23, 4:36 PM EDT	Special Weather Statement	BGM	Luzerne	54 min

Nearby

Flash Flood Watches in Pennsylvania, 2011 Flash Flood Watches in New York, 2011 Every flash flood watch 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.