Alert archive / New Jersey / Wind Advisories in 2009

Wind Advisory 12, NWS Philadelphia/Mount Holly

December 9, 2009Sussex County, Delaware; Atlantic County, Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this wind advisory at Dec 9, 2009, 5:04 AM EST for Sussex County, Delaware; Atlantic County, Cape May County, New Jersey. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 9, 2009, 5:04 AM EST (10:04 UTC)
Expired
Dec 9, 2009, 9:28 AM EST
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, DE, Atlantic County, NJ, Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 52 km from the middle of the area, began a volume at 10:05 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, 10.1 hours before the alert went out and 134 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 2009-12-09Temperature 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 2009-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.1939587897Sfc1 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
931 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
224 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.

000 
WWUS71 KPHI 091004
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
504 AM EST WED DEC 9 2009


DEZ004-NJZ024-025-091500-
/O.NEW.KPHI.WI.Y.0012.091209T1004Z-091209T1500Z/
DELAWARE BEACHES-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
INCLUDING THE CITIES OF...REHOBOTH BEACH...OCEAN CITY...
ATLANTIC CITY
504 AM EST WED DEC 9 2009

...WIND ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM EST THIS MORNING. 

STRONG ONSHORE WINDS WITH GUSTS TO AROUND 45 MPH WILL CONTINUE
INTO THIS MORNING. WINDS WILL DIMINISH A BIT THIS AFTERNOON BUT
MAY INCREASE AGAIN TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

RNS
1 follow-up statement
000 
WWUS71 KPHI 091428
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
928 AM EST WED DEC 9 2009

DEZ004-NJZ024-025-091530-
/O.CAN.KPHI.WI.Y.0012.000000T0000Z-091209T1500Z/
DELAWARE BEACHES-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
INCLUDING THE CITIES OF...REHOBOTH BEACH...OCEAN CITY...
ATLANTIC CITY
928 AM EST WED DEC 9 2009

...WIND ADVISORY IS CANCELLED...

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

THE STRONG ONSHORE WIND HAS ENDED. WIND GUSTS FROM THE SOUTHWEST
MAY REACH AROUND 30 MPH THROUGH THE EARLY AFTERNOON. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 9, 5:43 AM ESTRiver Flood WarningPHINew Castle9 hr
Dec 9, 6:53 AM ESTAreal Flood WarningPHINew Castle8 hr
Dec 9, 7:08 AM ESTAreal Flood AdvisoryPHIKent, Sussex4 hr
Dec 9, 7:54 AM ESTRiver Flood WarningPHINew Castle8 hr
Dec 9, 8:44 AM ESTRiver Flood WarningPHINew Castle5 hr
Dec 9, 12:00 PM ESTWind AdvisoryPHIKent, New Castle, Sussex33 hr
Dec 9, 2:26 PM ESTCoastal Flood AdvisoryPHINew Castle7 hr
Dec 9, 2:55 PM ESTAreal Flood WarningPHINew Castle7 hr
Dec 9, 4:55 PM ESTAreal Flood WarningPHISussex6 hr
Dec 9, 7:01 AM ESTAreal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Cumberland4 hr
Dec 9, 7:29 AM ESTAreal Flood WarningPHIHunterdon, Mercer, Middlesex, Somerset8 hr
Dec 9, 8:02 AM ESTAreal Flood AdvisoryPHIMonmouth, Ocean4 hr
Dec 9, 8:11 AM ESTRiver Flood WarningPHIMercer8 hr
Dec 9, 9:58 AM ESTAreal Flood AdvisoryPHIWarren3 hr
Dec 9, 10:35 AM ESTCoastal Flood AdvisoryPHIMonmouth, Ocean3 hr
Dec 9, 10:48 AM ESTRiver Flood WarningPHISomerset31 hr
Dec 9, 3:42 PM ESTAreal Flood WarningPHIHunterdon, Mercer, Middlesex, Somerset16 hr

Nearby

Wind Advisories in New Jersey, 2009Wind Advisories in Delaware, 2009Every wind advisory in 2009

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.