Alert archive / New Jersey / Fire Weather Watches in 2012

Fire Weather Watch 8, NWS Philadelphia/Mount Holly

April 16, 201216 counties in New Jersey; 7 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this fire weather watch at Apr 16, 2012, 3:47 PM EDT for 16 counties in New Jersey; 7 counties in Pennsylvania. It took effect at Apr 17, 2012, 10:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 16, 2012, 3:47 PM EDT (19:47 UTC)
In effect from
Apr 17, 2012, 10:00 AM EDT
Expired
Apr 17, 2012, 3:28 AM EDT
In force
Issued by
NWS Philadelphia/Mount Holly
All 23 counties

Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 19:49 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.8 hours before the alert went out and 128 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-04-16Temperature 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 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2012-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.193958Sfc1 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
1651 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
147 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.

021 
WWUS81 KPHI 161947
RFWPHI

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
347 PM EDT MON APR 16 2012

NJZ001-007>010-012>027-PAZ054-055-060>062-067>071-170900-
/O.NEW.KPHI.FW.A.0008.120417T1400Z-120418T0000Z/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
347 PM EDT MON APR 16 2012

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING.

* WINDS...NORTHWEST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH.

* RELATIVE HUMIDITY...AS LOW AS 20 PERCENT FROM LATE MORNING
  THROUGH THE AFTERNOON.

* IMPACTS...THE FIRE DANGER REMAINS ELEVATED DUE TO THE EXPECTED
  GUSTY WINDS AND THE CONTINUATION OF THE RATHER DRY CONDITIONS.
  AS A RESULT, THE POTENTIAL EXISTS FOR RAPID SPREAD IF
  UNCONTROLLED FIRES DEVELOP OR EVEN FOR PRESCRIBED BURNS TO GET
  OUT OF CONTROL. OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

GORSE
1 follow-up statement
398 
WWUS81 KPHI 170728
RFWPHI

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
328 AM EDT TUE APR 17 2012

NJZ001-007>010-012>027-PAZ054-055-060>062-067>071-180000-
/O.UPG.KPHI.FW.A.0008.120417T1400Z-120418T0000Z/
/O.NEW.KPHI.FW.W.0009.120417T1400Z-120418T0000Z/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-
SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
328 AM EDT TUE APR 17 2012

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG
WARNING. IT IS IN EFFECT FROM 1000 AM UNTIL 800 PM. THE FIRE
WEATHER WATCH IS NO LONGER IN EFFECT.

* AFFECTED AREAS...THE POCONOS, THE LEHIGH VALLEY, BERKS COUNTY
  AND SOUTHEASTERN PENNSYLVANIA, AS WELL AS NORTHWESTERN, CENTRAL
  AND SOUTHERN NEW JERSEY.

* WINDS...NORTHWEST AT 10 TO 15 MPH TODAY WITH GUSTS AROUND 20
  MPH.

* RELATIVE HUMIDITY...MAINLY IN THE 20 TO 30 PERCENT RANGE FROM
  LATE THIS MORNING INTO THE EARLY EVENING HOURS.

* IMPACTS...THE POTENTIAL FOR THE RAPID SPREAD OF WILDFIRES
  REMAINS HIGH TODAY DUE TO THE EXPECTED GUSTY WINDS AND THE
  CONTINUED DRY CONDITIONS. OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EXPECTED DUE TO THE COMBINATION OF GUSTY WINDS, LOW RELATIVE
HUMIDITY VALUES AND DRY FINE FUELS.

&&

$$

IOVINO

Nearby

Fire Weather Watches in New Jersey, 2012Fire Weather Watches in Pennsylvania, 2012Every fire weather watch in 2012

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.