Alert archive / Delaware / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

September 8, 2018Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 8, 2018, 11:54 AM EDT for Sussex County, Delaware. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 8, 2018, 11:54 AM EDT (15:54 UTC)
Expired
Sep 8, 2018, 12:15 PM EDT
In force
21 min
Issued by
NWS Philadelphia/Mount Holly

County Sussex County, DE

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 3.9 hours before the alert went out and 75 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 12:00Z on 2018-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1813 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2018-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
1813 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
711 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this special weather statement went out at Sep 8, 10:55 AM EDT, 59 minutes earlier.

Area forecast discussion, Sep 8, 10:55 AM EDT, 59 minutes before
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Hazardous weather outlook, Sep 8, 5:38 AM EDT, 6 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
538 AM EDT Sat Sep 8 2018

NJZ001-007>010-PAZ054-055-060>062-101>105-091000-
Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh-
Northampton-Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-
538 AM EDT Sat Sep 8 2018

...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for northern New Jersey,
northwest New Jersey, east central Pennsylvania, northeast
Pennsylvania and southeast Pennsylvania.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ015-017>019-PAZ070-071-106-091000-
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 1 AM TO 6 AM EDT SUNDAY...
...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for central New Jersey, southern
New Jersey and southeast Pennsylvania.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty
with the eventual track of Florence. The risk for impacts along the
East Coast has increased. However, the uncertainty with the model
guidance this far out makes it difficult to determine the exact
location, magnitude, and timing of these impacts our region will
have. At this point, there is the potential for a period of heavy
rain and strong winds by the end of next week unless the storm takes
a turn out to sea, which still remains a possibility. At this time
and through the weekend, continue to monitor the forecasts from the
NHC on the track of Florence and begin thinking of possible
preparations in case our area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ008-012-015-019-020-091000-
Cecil-Kent MD-Queen Annes-Talbot-Caroline-
538 AM EDT Sat Sep 8 2018

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and Tonight.

There is the potential for locally heavy rain today and tonight that
could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized
flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty
with the eventual track of Florence. The risk for impacts along the
East Coast has increased. However, the uncertainty with the model
guidance this far out makes it difficult to determine the exact
location, magnitude, and timing of these impacts our region will
have. At this point, there is the potential for a period of heavy
rain and strong winds by the end of next week unless the storm takes
a turn out to sea, which still remains a possibility. At this time
and through the weekend, continue to monitor the forecasts from the
NHC on the track of Florence and begin thinking of possible
preparations in case our area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ001-NJZ016-091000-
New Castle-Salem-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 3 AM
EDT SUNDAY...

This Hazardous Weather Outlook is for northern Delaware and
southern New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

Heavy rain today and tonight could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized
flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ012-013-020-027-091000-
Middlesex-Western Monmouth-Ocean-Southeastern Burlington-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 PM TO 11 PM EDT THIS
EVENING...
...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for central New Jersey, northern
New Jersey and southern New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ003-NJZ021-022-091000-
Inland Sussex-Cumberland-Atlantic-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 PM TO 11 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southern Delaware and
southern New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

Heavy rain today and tonight could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized
flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ002-NJZ023-091000-
Kent-Cape May-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD WATCH IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...

This Hazardous Weather Outlook is for central Delaware and southern
New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Watch.

Heavy rain today and tonight could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized
flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ014-026-091000-
Eastern Monmouth-Coastal Ocean-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 PM TO 11 PM EDT THIS
EVENING...
...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY EVENING...

This Hazardous Weather Outlook is for central New Jersey and
southern New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ024-091000-
Atlantic Coastal Cape May-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD WATCH IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...

This Hazardous Weather Outlook is for southern New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Watch.

Heavy rain today and tonight could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized
flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ004-NJZ025-091000-
Delaware Beaches-Coastal Atlantic-
538 AM EDT Sat Sep 8 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 PM TO 11 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southern Delaware and
southern New Jersey.

.DAY ONE...Today and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

Heavy rain today and tonight could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is the potential for locally heavy rain from the weekend into
the early part of the new week which could lead to localized
flooding.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-431-450>455-091000-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
538 AM EDT Sat Sep 8 2018

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY
NIGHT...

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Watch.

The latest track from the NHC brings Florence into the western
Atlantic by Wednesday. At that point, there is still uncertainty with
the eventual track of Florence. The risk for impacts along the East
Coast has increased. However, the uncertainty with the model guidance
this far out makes it difficult to determine the exact location,
magnitude, and timing of these impacts our region will have. At this
point, there is the potential for a period of heavy rain and strong
winds by the end of next week unless the storm takes a turn out to
sea, which still remains a possibility. At this time and through the
weekend, continue to monitor the forecasts from the NHC on the track
of Florence and begin thinking of possible preparations in case our
area does have an impact from the storm.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MPS

In the hours before

Local storm report, Sep 8, 6:58 AM EDT, 4 hours 56 minutes before
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Local storm report, Sep 8, 7:50 AM EDT, 4 hours 4 minutes before
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Special weather statement, Sep 8, 11:54 AM EDT, 0 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1154 AM EDT SAT SEP 8 2018

DEZ004-081615-
Delaware Beaches-
1154 AM EDT SAT SEP 8 2018

...HEAVY SHOWER AFFECTING EASTERN SUSSEX COUNTY...

At 1149 AM EDT, a shower producing heavy rain was located near
Rehoboth Bay. It was moving southeast at 10 mph.

Locations impacted include...
Millville, Ocean View and South Bethany.

The heavy rain could cause localized flooding. Do not drive your
vehicle through flooded roadways.

LAT...LON 3859 7512 3860 7508 3862 7508 3854 7506
      3853 7505 3849 7505 3849 7511
TIME...MOT...LOC 1549Z 312DEG 7KT 3862 7506

Kruzdlo

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 8:32 PM EDTFlash Flood WarningPHICamden, Gloucester, Salem2 hr
Sep 7, 10:41 PM EDTAreal Flood WarningPHICamden, Gloucester8 hr
Sep 7, 11:19 PM EDTRip Current StatementPHIAtlantic, Cape May, Monmouth, Ocean9 days
Sep 7, 11:20 PM EDTAreal Flood WarningPHICamden, Gloucester, Salem4 hr
Sep 8, 1:21 AM EDTSpecial Marine WarningPHI54 min
Sep 8, 1:27 AM EDTSpecial Marine WarningPHI63 min
Sep 8, 2:17 AM EDTSpecial Marine WarningPHI42 min
Sep 8, 2:43 AM EDTAreal Flood AdvisoryPHIBurlington, Mercer, Middlesex, Monmouth, Ocean6 hr
Sep 8, 3:34 AM EDTFlood WatchPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more60 hr
Sep 8, 4:29 AM EDTAreal Flood AdvisoryPHIBurlington4 hr
Sep 8, 5:31 AM EDTCoastal Flood WatchPHICape May11 hr
Sep 8, 5:31 AM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Cumberland, Middlesex, Monmouth, Ocean and 1 more21 hr
Sep 8, 5:31 AM EDTCoastal Flood AdvisoryPHIBurlington, Camden, Gloucester, Mercer24 hr
Sep 8, 8:15 AM EDTAreal Flood AdvisoryPHICamden, Gloucester, Salem119 min
Sep 8, 3:36 PM EDTGale WarningPHI48 hr
Sep 8, 4:49 PM EDTCoastal Flood WatchPHIAtlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean and 1 more7 hr
Sep 8, 4:49 PM EDTCoastal Flood WarningPHICape May, Cumberland6 hr
Sep 8, 4:49 PM EDTHigh Surf AdvisoryPHIAtlantic, Cape May, Monmouth, Ocean60 hr
Sep 8, 2:41 AM EDTAreal Flood WarningPHIBerks, Montgomery4 hr
Sep 7, 11:40 PM EDTSpecial Weather StatementPHISussex35 min
Sep 8, 12:11 AM EDTFlash Flood WarningPHISussex4 hr
Sep 7, 10:51 PM EDTSpecial Weather StatementPHITalbot39 min
Sep 7, 11:36 PM EDTSpecial Weather StatementPHITalbot24 min
Sep 8, 2:19 AM EDTSpecial Weather StatementPHIQueen Anne's41 min
Sep 8, 3:14 AM EDTFlash Flood WarningPHIKent, Queen Anne's, Talbot3 hr
Sep 8, 6:01 AM EDTAreal Flood WarningPHIKent, Queen Anne's, Talbot4 hr

Nearby

Special Weather Statements in Delaware, 2018Every special weather statement 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.