Alert archive / Pennsylvania / Areal Flood Advisories in 2014

Areal Flood Advisory 265, NWS Philadelphia/Mount Holly

May 16, 2014Hunterdon County, Warren County, New Jersey; 10 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood advisory at May 16, 2014, 9:56 AM EDT for Hunterdon County, Warren County, New Jersey; 10 counties in Pennsylvania. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: May 16, 2014, 9:56 AM EDT (13:56 UTC)
Expired: May 16, 2014, 4:45 PM EDT
In force: 7 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 1.9 hours before the alert went out and 217 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: 5 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 237 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 Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at May 16, 8:59 AM EDT, 57 minutes earlier.

Area forecast discussion, May 16, 8:59 AM EDT, 57 minutes before

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Hazardous weather outlook, May 16, 8:04 AM EDT, 1 hour 52 minutes before

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The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 8:03 AM EDT	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	10 hr
May 16, 10:01 AM EDT	Areal Flood Advisory	PHI	Camden, Cumberland, Gloucester, Salem	7 hr
May 16, 2:51 PM EDT	Areal Flood Warning	PHI	Hunterdon, Warren	6 hr
May 16, 12:47 PM EDT	Areal Flood Warning	PHI	Chester, Delaware	6 hr
May 16, 3:12 PM EDT	River Flood Warning	PHI	Chester	4 hr
May 16, 3:18 PM EDT	River Flood Warning	PHI	Delaware	2 hr
May 16, 3:23 PM EDT	Areal Flood Warning	PHI	Bucks, Montgomery, Philadelphia	11 hr
May 16, 3:58 PM EDT	Areal Flood Warning	PHI	Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more	8 hr
May 16, 9:41 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	6 hr
May 16, 10:15 AM EDT	Flash Flood Warning	PHI	Queen Anne's, Talbot	4 hr

Nearby

Areal Flood Advisories in Pennsylvania, 2014 Areal Flood Advisories in New Jersey, 2014 Every areal flood advisory in 2014

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.