Alert archive / New Jersey / Flood Watches in 2018

Flood Watch 8, NWS Philadelphia/Mount Holly

November 15, 20186 counties in New Jersey; 4 counties in Maryland; Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this flood watch at Nov 15, 2018, 2:45 AM EST for 6 counties in New Jersey; 4 counties in Maryland; Kent County, Sussex County, Delaware. It took effect at Nov 15, 2018, 10:00 AM EST. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Nov 15, 2018, 2:45 AM EST (07:45 UTC)
In effect from
Nov 15, 2018, 10:00 AM EST
Expired
Nov 15, 2018, 3:30 PM EST
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
None

Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Cape May County, NJ, Cumberland County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Dover AFB radar (KDOX), 56 km from the middle of the area, began a volume at 07:46 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, 7.8 hours before the alert went out and 153 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-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2018-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2018-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -127 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
1414 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
-127 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

493 
WGUS61 KPHI 150745
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Mount Holly NJ
245 AM EST Thu Nov 15 2018

DEZ002>004-MDZ012-015-019-020-NJZ013-014-020>027-152200-
/O.NEW.KPHI.FA.A.0008.181115T1500Z-181116T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot-
Caroline-Western Monmouth-Eastern Monmouth-Ocean-Cumberland-
Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic-
Coastal Ocean-Southeastern Burlington-
Including the cities of Dover, Georgetown, Rehoboth Beach, 
Chestertown, Centreville, Easton, Denton, Freehold, Sandy Hook, 
Jackson, Millville, Hammonton, Cape May Court House, Ocean City, 
Atlantic City, Long Beach Island, and Wharton State Forest
245 AM EST Thu Nov 15 2018

...FLOOD WATCH IN EFFECT FROM 10 AM EST THIS MORNING THROUGH THIS
EVENING...

The National Weather Service in Mount Holly has issued a

* Flood Watch for portions of eastern Maryland, central and 
  southern Delaware, and southern New Jersey.

* From 10:00 AM this morning through this evening.

* An area of heavy rain will lift northward across the region 
  today. Rainfall totals of 1 to 2 inches are expected with 
  locally higher amounts possible.

* The heavy rain will result in minor flooding along some rivers,
  streams and creeks in the area. Flooding of roadways and areas 
  of poor drainage is also expected, especially as leaves and 
  other debris clog storm drains.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means that there is the potential for flooding 
based on the current forecast.

Please monitor the forecast and be alert for possible Flood 
Warnings. If you live in an area that is prone to flooding, be 
prepared to take action if flooding develops.

&&

$$

Iovino
1 follow-up statement
674 
WGUS61 KPHI 152030
FFAPHI

Flood Watch
National Weather Service Mount Holly NJ
330 PM EST Thu Nov 15 2018

DEZ002>004-MDZ012-015-019-020-NJZ013-014-020>027-152130-
/O.CAN.KPHI.FA.A.0008.000000T0000Z-181116T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot-
Caroline-Western Monmouth-Eastern Monmouth-Ocean-Cumberland-
Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic-
Coastal Ocean-Southeastern Burlington-
Including the cities of Dover, Georgetown, Rehoboth Beach, 
Chestertown, Centreville, Easton, Denton, Freehold, Sandy Hook, 
Jackson, Millville, Hammonton, Cape May Court House, Ocean City, 
Atlantic City, Long Beach Island, and Wharton State Forest
330 PM EST Thu Nov 15 2018

...FLOOD WATCH IS CANCELLED...

The Flood Watch for portions of Delaware, northeast Maryland, and
New Jersey has been cancelled.

$$

Kruzdlo

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 15, 12:21 PM ESTWinter Storm WarningPHIHunterdon, Morris, Somerset, Sussex, Warren21 hr
Nov 15, 3:14 PM ESTStorm WarningPHI15 hr

Nearby

Flood Watches in New Jersey, 2018Flood Watches in Maryland, 2018Flood Watches in Delaware, 2018Every flood watch in 2018

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.