Alert archive / New Jersey / Coastal Flood Statements in 2011
Coastal Flood Statement 12, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Apr 17, 2011, 10:35 PM EDT for Delaware County, Philadelphia County, Pennsylvania; 4 counties in New Jersey; New Castle County, Delaware. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 17, 2011, 10:35 PM EDT (02:35 UTC)
- Expired
- Apr 18, 2011, 3:47 AM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 02:32 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.6 hours before the alert went out and 207 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2319 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
856 WHUS41 KPHI 180235 CFWPHI URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1035 PM EDT SUN APR 17 2011 ...SPOTTY MINOR TIDAL FLOODING POSSIBLE... DEZ001-NJZ016>019-PAZ070-071-180800- /O.NEW.KPHI.CF.S.0012.110418T0235Z-110418T0800Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 1035 PM EDT SUN APR 17 2011 THE UPCOMING HIGH TIDE CYCLE IS PRODUCING TIDES A LITTLE HIGHER THAN NORMAL. THE DEPARTURES ARE FALLING...BUT NONETHELESS...THERE MAY BE SOME SPOTTY MINOR TIDAL FLOODING ALONG THE TIDAL PORTION OF THE DELAWARE RIVER OVERNIGHT. THE HIGH TIDE OCCURS AT PHILADELPHIA AT AROUND 200 AM. $$
1 follow-up statement
122 WHUS41 KPHI 180747 CFWPHI URGENT - IMMEDIATE BROADCAST REQUESTED COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 347 AM EDT MON APR 18 2011 ...MINOR TIDAL FLOODING THREAT HAS PASSED... DEZ001-NJZ016>019-PAZ070-071-180900- /O.CAN.KPHI.CF.S.0012.000000T0000Z-110418T0800Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 347 AM EDT MON APR 18 2011 THE HIGH TIDE HAS OCCURRED ALONG THE TIDAL DELAWARE. THE THREAT FOR MINOR TIDAL FLOODING HAS PASSED. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 4:05 PM EDT | Coastal Flood Statement | PHI | Delaware, Philadelphia | 12 hr |
| Apr 18, 8:28 AM EDT | Areal Flood Warning | PHI | Morris | 31 hr |
| Apr 18, 10:39 AM EDT | Small Craft Advisory for Hazardous Seas | PHI | 5 hr | |
| Apr 18, 3:50 PM EDT | Small Craft Advisory | PHI | 19 hr |
Nearby
Coastal Flood Statements in New Jersey, 2011Coastal Flood Statements in Pennsylvania, 2011Coastal Flood Statements in Delaware, 2011Every coastal flood statement 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.