Alert archive / Delaware / Coastal Flood Statements in 2019
Coastal Flood Statement 19, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Dec 31, 2019, 11:38 AM EST for Sussex County, Delaware; Ocean County, New Jersey. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Dec 31, 2019, 11:38 AM EST (16:38 UTC)
- Expired
- Dec 31, 2019, 10:00 PM EST
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Sussex County, DE, Ocean County, NJ
The radar
The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 16:40 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, 4.6 hours before the alert went out and 158 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
- 519 m above ground
- 0-6 km bulk shear
- 91 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
388 WHUS41 KPHI 311638 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 1138 AM EST Tue Dec 31 2019 NJZ020-026-010100- /O.NEW.KPHI.CF.S.0019.191231T1638Z-200101T0100Z/ Ocean-Coastal Ocean- 1138 AM EST Tue Dec 31 2019 ...MINOR FLOODING ALONG THE UPPER PART OF BARNEGAT BAY INTO THIS EVENING... * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...The upper part of Barnegat Bay and the tidal waterways that flow into it. * WHEN...Until 8:00 PM this evening. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. $$ Iovino
4 follow-up statements
864 WHUS41 KPHI 311915 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 215 PM EST Tue Dec 31 2019 DEZ003-004-312200- /O.EXB.KPHI.CF.S.0019.000000T0000Z-191231T2200Z/ Inland Sussex-Delaware Beaches- 215 PM EST Tue Dec 31 2019 ...MINOR FLOODING ALONG LITTLE ASSAWOMAN BAY THIS AFTERNOON... * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...Little Assawoman Bay and the tidal waterways that flow into it. * WHEN...Until 5:00 PM this afternoon. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. $$ NJZ020-026-010100- /O.CON.KPHI.CF.S.0019.000000T0000Z-200101T0100Z/ Ocean-Coastal Ocean- 215 PM EST Tue Dec 31 2019 ...MINOR FLOODING ALONG THE UPPER PART OF BARNEGAT BAY INTO THIS EVENING... * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...The upper part of Barnegat Bay and the tidal waterways that flow into it. * WHEN...Until 8:00 PM this evening. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. $$ Iovino
903 WHUS41 KPHI 312149 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 449 PM EST Tue Dec 31 2019 DEZ003-004-010100- /O.EXT.KPHI.CF.S.0019.000000T0000Z-200101T0100Z/ Inland Sussex-Delaware Beaches- 449 PM EST Tue Dec 31 2019 * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...Little Assawoman Bay and the tidal waterways that flow into it. * WHEN...Until 8 PM EST this evening. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. && $$ NJZ020-026-010100- /O.CON.KPHI.CF.S.0019.000000T0000Z-200101T0100Z/ Ocean-Coastal Ocean- 449 PM EST Tue Dec 31 2019 * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...The upper part of Barnegat Bay and the tidal waterways that flow into it. * WHEN...Until 8:00 PM this evening. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. && $$ CMS
001
WHUS41 KPHI 010026
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
726 PM EST Tue Dec 31 2019
MDZ015-019-020-010500-
/O.NEW.KPHI.CF.Y.0001.200101T0026Z-200101T0500Z/
Queen Annes-Talbot-Caroline-
726 PM EST Tue Dec 31 2019
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Queen Anne's, Talbot, and Caroline Counties in Maryland.
* WHEN...Until midnight EST tonight.
* IMPACTS...Flooding is possible in and near Church Hill, Kent
Island, Saint Michaels, Denton, and other locations near the
bay, Choptank River, and other tidal tributaries.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Eastern Bay at Claiborne
MLLW Categories - Minor 3.4 ft, Moderate 4.4 ft, Major 5.4 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.7 ft, Major 3.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/09 PM 3.7 2.0 2.6 Minor
01/05 AM 2.3 0.6 2.1 None
01/08 PM 1.8 0.1 0.9 None
02/09 AM 1.3 -0.4 0.6 None
02/10 PM 1.6 -0.1 0.7 None
03/10 AM 1.6 -0.1 0.8 None
&&
$$
NJZ020-026-010300-
/O.EXT.KPHI.CF.S.0019.000000T0000Z-200101T0300Z/
Ocean-Coastal Ocean-
726 PM EST Tue Dec 31 2019
...MINOR FLOODING CONTINUES ON UPPER BARNEGAT BAY...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...The upper part of Barnegat Bay and the tidal waterways
that flow into it.
* WHEN...Until 10 PM EST this evening.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
&&
$$
DEZ003-004-010300-
/O.EXT.KPHI.CF.S.0019.000000T0000Z-200101T0300Z/
Inland Sussex-Delaware Beaches-
726 PM EST Tue Dec 31 2019
...MINOR FLOODING CONTINUES ON LITTLE ASSAWOMAN BAY...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Little Assawoman Bay and the tidal waterways that flow
into it.
* WHEN...Until 10 PM EST this evening.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
&&
$$
CMS645
WHUS41 KPHI 010243
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
943 PM EST Tue Dec 31 2019
NJZ020-026-010345-
/O.EXP.KPHI.CF.S.0019.000000T0000Z-200101T0300Z/
Ocean-Coastal Ocean-
943 PM EST Tue Dec 31 2019
The coastal flood statement for upper portions of Barnegat Bay
will expire at 10 pm. Minor flooding has ended in these areas.
$$
DEZ003-004-010345-
/O.EXP.KPHI.CF.S.0019.000000T0000Z-200101T0300Z/
Inland Sussex-Delaware Beaches-
943 PM EST Tue Dec 31 2019
The coastal flood statement for Little Assawoman Bay will expire
at 10 pm. Minor flooding has ended in these areas.
$$
MDZ012-010900-
/O.EXB.KPHI.CF.Y.0001.200101T0300Z-200101T0900Z/
Kent MD-
943 PM EST Tue Dec 31 2019
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 4 AM EST WEDNESDAY...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...Kent County in Maryland.
* WHEN...Until 4 AM EST Wednesday.
* IMPACTS...Flooding is possible in and near Rock Hall, Skinners
Neck, Piney Neck, McKinleyville, Cliffs City, and Chestertown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Chesapeake Bay at Tolchester Beach
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 2.8 ft, Major 3.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/11 PM 3.8 2.1 2.8 Minor
01/11 AM 2.0 0.3 1.4 None
01/10 PM 1.6 -0.1 0.8 None
02/01 PM 1.3 -0.4 0.6 None
03/12 AM 1.6 -0.1 0.8 None
03/01 PM 1.6 -0.1 0.8 None
&&
$$
MDZ015-019-020-010500-
/O.CON.KPHI.CF.Y.0001.000000T0000Z-200101T0500Z/
Queen Annes-Talbot-Caroline-
943 PM EST Tue Dec 31 2019
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST
TONIGHT...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Talbot, Caroline, and Queen Anne's Counties in Maryland.
* WHEN...Until midnight EST tonight.
* IMPACTS...Flooding is possible in and near Church Hill, Kent
Island, Saint Michaels, Denton, and other locations near the
bay, Choptank River, and other tidal tributaries.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
&&
Time of high total tides are approximate to the nearest hour.
Eastern Bay at Claiborne
MLLW Categories - Minor 3.4 ft, Moderate 4.4 ft, Major 5.4 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.7 ft, Major 3.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/09 PM 3.7 2.0 2.6 Minor
01/05 AM 2.3 0.6 2.1 None
01/08 PM 1.8 0.1 0.9 None
02/09 AM 1.3 -0.4 0.6 None
02/10 PM 1.6 -0.1 0.7 None
03/10 AM 1.6 -0.1 0.8 None
&&
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 31, 4:10 AM EST | Coastal Flood Statement | PHI | Ocean | 6 hr |
Nearby
Coastal Flood Statements in Delaware, 2019Coastal Flood Statements in New Jersey, 2019Every coastal flood statement in 2019
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.