Alert archive / Delaware / Coastal Flood Statements in 2020
Coastal Flood Statement 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Oct 30, 2020, 12:58 PM EDT for Sussex County, Delaware. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Oct 30, 2020, 12:58 PM EDT (16:58 UTC)
- Expired
- Oct 30, 2020, 3:06 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 18 km from the middle of the area, began a volume at 16:57 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 12:00Z, 5.0 hours before the alert went out and 84 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
- 956 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- -60 m²/s²
- 0-3 km storm-relative helicity
- -73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
546 WHUS41 KPHI 301658 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 1258 PM EDT Fri Oct 30 2020 DEZ003-004-302100- /O.CAN.KPHI.CF.Y.0030.000000T0000Z-201030T1700Z/ /O.NEW.KPHI.CF.S.0021.201030T1700Z-201030T2100Z/ Inland Sussex-Delaware Beaches- 1258 PM EDT Fri Oct 30 2020 ...LINGERING MINOR FLOODING ON THE BACK BAYS OF SUSSEX COUNTY THIS AFTERNOON... * WHAT...Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Rehoboth Bay, Indian River Bay, Little Assawoman Bay and the tidal waterways that flow into them. * WHEN...Until 5:00 PM this afternoon. * IMPACTS...Minor roadway flooding is possible. $$ NJZ012>014-020-022>027-301800- /O.CAN.KPHI.CF.Y.0030.000000T0000Z-201030T1700Z/ Middlesex-Western Monmouth-Eastern Monmouth-Ocean-Atlantic- Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 1258 PM EDT Fri Oct 30 2020 ...COASTAL FLOOD ADVISORY IS CANCELLED... Water levels along the coast of New Jersey have fallen. As a result, the Coastal Flood Advisory has been cancelled. $$ Iovino
1 follow-up statement
145 WHUS41 KPHI 301906 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 306 PM EDT Fri Oct 30 2020 DEZ003-004-302015- /O.CAN.KPHI.CF.S.0021.000000T0000Z-201030T2100Z/ Inland Sussex-Delaware Beaches- 306 PM EDT Fri Oct 30 2020 ...LINGERING MINOR FLOODING ON THE BACK BAYS OF SUSSEX COUNTY IS ENDING... Water levels on the back bays of Sussex County have fallen. However, additional minor flooding is possible with this evening's high tide. $$ Iovino
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 3:14 PM EDT | Coastal Flood Advisory | PHI | Sussex | 9 hr |
Nearby
Coastal Flood Statements in Delaware, 2020Every coastal flood statement in 2020
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.