Alert archive / Delaware / Coastal Flood Statements in 2020
Coastal Flood Statement 19, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Oct 12, 2020, 8:54 PM EDT for Sussex County, Delaware. It took effect at Oct 12, 2020, 9:00 PM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Oct 12, 2020, 8:54 PM EDT (00:54 UTC)
- In effect from
- Oct 12, 2020, 9:00 PM EDT
- Expired
- Oct 13, 2020, 4:00 AM EDT
- In force
- 7 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 00:54 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, 0.9 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
- 15 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
731 WHUS41 KPHI 130054 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 854 PM EDT Mon Oct 12 2020 DEZ001-NJZ016-130200- /O.CAN.KPHI.CF.Y.0026.000000T0000Z-201013T0200Z/ New Castle-Salem- 854 PM EDT Mon Oct 12 2020 ...COASTAL FLOOD ADVISORY IS CANCELLED... High tide has passed and no additional tidal flooding is expected. Therefore, the coastal flood advisory has been cancelled. $$ DEZ003-004-130800- /O.EXP.KPHI.CF.Y.0026.000000T0000Z-201013T0100Z/ /O.NEW.KPHI.CF.S.0019.201013T0100Z-201013T0800Z/ Inland Sussex-Delaware Beaches- 854 PM EDT Mon Oct 12 2020 ...MINOR FLOODING ALONG LITTLE ASSAWOMAN BAY... * WHAT...Up to one half foot of inundation above ground level expected in low- lying areas near shorelines and tidal waterways. * WHERE...Little Assawoman Bay and the tidal waterways that flow into it. * WHEN...Until 4 AM EDT Tuesday. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$ NJZ020-022>027-130200- /O.EXP.KPHI.CF.Y.0026.000000T0000Z-201013T0100Z/ Ocean-Atlantic-Cape May-Atlantic Coastal Cape May- Coastal Atlantic-Coastal Ocean-Southeastern Burlington- 854 PM EDT Mon Oct 12 2020 ...COASTAL FLOOD ADVISORY WILL EXPIRE AT 9 PM EDT THIS EVENING... High tide has passed and no additional tidal flooding is expected. Therefore, the coastal flood advisory will be allowed to expire. $$ DEZ002-NJZ021-130200- /O.EXP.KPHI.CF.Y.0026.000000T0000Z-201013T0100Z/ Kent-Cumberland- 854 PM EDT Mon Oct 12 2020 ...COASTAL FLOOD ADVISORY WILL EXPIRE AT 9 PM EDT THIS EVENING... High tide has passed and no additional tidal flooding is expected. Therefore, the coastal flood advisory will be allowed to expire. $$
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.