Alert archive / Delaware / Wind Advisories in 2011

Wind Advisory 13, NWS Philadelphia/Mount Holly

December 22, 2011Sussex County, Delaware; Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this wind advisory at Dec 22, 2011, 9:43 PM EST for Sussex County, Delaware; Cape May County, New Jersey. It took effect at Dec 23, 2011, 2:00 AM EST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 22, 2011, 9:43 PM EST (02:43 UTC)
In effect from
Dec 23, 2011, 2:00 AM EST
Expired
Dec 23, 2011, 6:29 AM EST
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, DE, Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 31 km from the middle of the area, began a volume at 02:46 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, 2.7 hours before the alert went out and 109 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 2011-12-23Temperature 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 2011-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.1939587897117Sfc1 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
903 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

104 
WWUS71 KPHI 230243
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
943 PM EST THU DEC 22 2011


DEZ003-004-NJZ023-024-231045-
/O.NEW.KPHI.WI.Y.0013.111223T0700Z-111223T1300Z/
INLAND SUSSEX-DELAWARE BEACHES-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
INCLUDING THE CITIES OF...GEORGETOWN...REHOBOTH BEACH...
CAPE MAY COURT HOUSE...OCEAN CITY
943 PM EST THU DEC 22 2011

...WIND ADVISORY IN EFFECT FROM 2 AM TO 8 AM EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EST FRIDAY. 

* LOCATIONS...THE SOUTHERN THIRD OF DELAWARE AND THE SOUTHERN TIP
  OF NEW JERSEY

* HAZARDS...WIND.

* WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH DEVELOPING
  BETWEEN 2 AM AND 5 AM THEN WIND SHIFTING STRONG WESTERLY FOR AN
  HOUR TWO BEFORE DIMINISHING LATER IN THE MORNING.

* TIMING...BEST CHANCE FOR GUSTS TO 45 MPH IS BETWEEN 3 AM AND 7
  AM. 

* IMPACTS...ISOLATED POWER OUTAGES ARE POSSIBLE NEAR DAWN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD USE EXTRA CAUTION...ESPECIALLY THOSE IN HIGH
PROFILE VEHICLES. LIGHT-WEIGHT OUTDOOR OBJECTS SUCH AS PATIO
FURNITURE AND GARBAGE CANS SHOULD BE SECURED.

&&

$$


DRAG
2 follow-up statements
124 
WWUS71 KPHI 230903
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 AM EST FRI DEC 23 2011

DEZ003-004-NJZ023-024-231300-
/O.CON.KPHI.WI.Y.0013.000000T0000Z-111223T1300Z/
INLAND SUSSEX-DELAWARE BEACHES-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
INCLUDING THE CITIES OF...GEORGETOWN...REHOBOTH BEACH...
CAPE MAY COURT HOUSE...OCEAN CITY
403 AM EST FRI DEC 23 2011

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 AM EST THIS MORNING...

* LOCATIONS...SUSSEX COUNTY DELAWARE AND CAPE MAY COUNTY NEW
  JERSEY.

* HAZARDS...WIND.

* WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* IMPACTS...ISOLATED POWER OUTAGES ARE POSSIBLE NEAR DAWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD USE EXTRA CAUTION...ESPECIALLY THOSE IN HIGH
PROFILE VEHICLES. LIGHT-WEIGHT OUTDOOR OBJECTS SUCH AS PATIO
FURNITURE AND GARBAGE CANS SHOULD BE SECURED.

&&

$$
866 
WWUS71 KPHI 231129
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
629 AM EST FRI DEC 23 2011


DEZ003-004-NJZ023-024-231230-
/O.CAN.KPHI.WI.Y.0013.000000T0000Z-111223T1300Z/
INLAND SUSSEX-DELAWARE BEACHES-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
INCLUDING THE CITIES OF...GEORGETOWN...REHOBOTH BEACH...
CAPE MAY COURT HOUSE...OCEAN CITY
629 AM EST FRI DEC 23 2011

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
WIND ADVISORY. 



$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 23, 2:37 AM ESTRiver Flood WarningPHINew Castle6 hr
Dec 22, 9:38 PM ESTGale WarningPHI11 hr
Dec 23, 6:27 AM ESTAreal Flood WarningPHIBurlington93 min

Nearby

Wind Advisories in Delaware, 2011Wind Advisories in New Jersey, 2011Every wind advisory in 2011

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.