Alert archive / Maryland / Coastal Flood Advisories in 2014

Coastal Flood Advisory 7, NWS Philadelphia/Mount Holly

May 16, 20144 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania; 5 counties in Maryland

NWS Philadelphia/Mount Holly issued this coastal flood advisory at May 16, 2014, 8:03 AM EDT for 4 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania; 5 counties in Maryland. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: May 16, 2014, 8:03 AM EDT (12:03 UTC)
Expired: May 16, 2014, 6:00 PM EDT
In force: 10 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Dover AFB radar (KDOX), 74 km from the middle of the area, began a volume at 12:05 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 0.1 hours before the alert went out and 172 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: 800 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -164 m²/s²
0-3 km storm-relative helicity: 66 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 coastal 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 coastal flood advisory went out at May 16, 8:01 AM EDT, 2 minutes earlier.

Area forecast discussion, May 16, 8:01 AM EDT, 2 minutes before

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Hazardous weather outlook, May 16, 4:17 AM EDT, 3 hours 46 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, 9:56 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	7 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

Coastal Flood Advisories in Maryland, 2014 Coastal Flood Advisories in New Jersey, 2014 Coastal Flood Advisories in Pennsylvania, 2014 Every coastal 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; radar from the NEXRAD Level II archive.