Alert archive / New Jersey / Red Flag Warnings in 2014

Red Flag Warning 1, NWS Philadelphia/Mount Holly

April 23, 20144 states

NWS Philadelphia/Mount Holly issued this red flag warning at Apr 23, 2014, 4:03 AM EDT for 4 states. It took effect at Apr 23, 2014, 11:00 AM EDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 23, 2014, 4:03 AM EDT (08:03 UTC)
In effect from
Apr 23, 2014, 11:00 AM EDT
Expired
Apr 23, 2014, 7:27 PM EDT
In force
8 hr
Issued by
NWS Philadelphia/Mount Holly
All 34 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, 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, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 08:08 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 8.1 hours before the alert went out and 219 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, Washington/Dulle, VA at 00:00Z on 2014-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 joules per kilogram.LCLLFCEL10008507005003002001001 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, Washington/Dulle, VA at 00:00Z on 2014-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 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
27 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
1501 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
139 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.

871 
WWUS81 KPHI 230803
RFWPHI

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 AM EDT WED APR 23 2014

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-070-071-101>106-240000-
/O.UPG.KPHI.FW.A.0002.140423T1500Z-140424T0000Z/
/O.NEW.KPHI.FW.W.0001.140423T1500Z-140424T0000Z/
/O.NEW.KPHI.FW.A.0003.140424T1500Z-140425T0000Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-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-DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
403 AM EDT WED APR 23 2014

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT
THIS EVENING FOR LOW RELATIVE HUMIDITY AND STRONG WIND FOR
EASTERN PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND THE
EASTERN SHORE OF MARYLAND... 

...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING FOR OR LOW RELATIVE HUMIDITY AND STRONG WIND FOR
EASTERN PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND THE
EASTERN SHORE OF MARYLAND...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG
WARNING FOR LOW RELATIVE HUMIDITY AND STRONG WIND...WHICH IS IN
EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING. A FIRE
WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE WEATHER WATCH FOR
LOW RELATIVE HUMIDITY AND STRONG WIND IS IN EFFECT FROM THURSDAY
MORNING THROUGH THURSDAY EVENING. 

* WINDS...NORTHWEST 15 TO 30 MPH WITH GUSTS UP TO 35 MPH TODAY.
  NORTHWEST 15 TO 20 WITH GUSTS TO 30 MPH ON THURSDAY.

* TIMING...WIND WILL INCREASE DURING THE DAY TODAY THEN DECREASE
  SOMEWHAT AFTER SUNSET BEFORE INCREASING AGAIN ON THURSDAY.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITY VALUES WILL
  GENERALLY BE IN THE 30S TODAY BUT SOME AREAS COULD GET BELOW 30
  PERCENT. ON THURSDAY, RELATIVE HUMIDITY VALUES WILL BE LOWER,
  GENERALLY IN THE TEENS AND 20S. 

* TEMPERATURES...HIGHS WILL MAINLY BE IN THE 50S TO LOWER 60S
  TODAY AND IN THE LOWER TO MID 60S ON THURSDAY. 

* IMPACTS...THE COMBINATION OF WINDY CONDITIONS AND LOW RELATIVE
  HUMIDITY VALUES WILL LEAD TO A MORE RAPID SPREAD RATE OF ANY
  FIRES THAT MAY DEVELOP. RESIDENTS ARE ENCOURAGED TO EXERCISE
  FIRE PREVENTION WITH ANY OUTDOOR ACTIVITIES AND PROPERLY DISPOSE
  OF SMOKING MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY DUE TO A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS. ANY
FIRES THAT DEVELOP MAY QUICKLY GET OUT OF CONTROL AND BECOME
DIFFICULT TO CONTAIN.

FOR MORE INFORMATION ABOUT WILDFIRE DANGER...BURN RESTRICTIONS...
AND WILDFIRE PREVENTION AND EDUCATION...PLEASE VISIT YOUR STATE
FORESTRY OR ENVIRONMENTAL PROTECTION WEBSITE.

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

FOR MORE INFORMATION ABOUT WILDFIRE DANGER...BURN RESTRICTIONS...
AND WILDFIRE PREVENTION AND EDUCATION...PLEASE VISIT YOUR STATE
FORESTRY OR ENVIRONMENTAL PROTECTION WEBSITE.

&&

$$
3 follow-up statements
372 
WWUS81 KPHI 231348
RFWPHI

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
948 AM EDT WED APR 23 2014

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-070-071-101>106-240500-
/O.CON.KPHI.FW.W.0001.140423T1500Z-140424T0000Z/
/O.CON.KPHI.FW.A.0003.140424T1500Z-140425T0000Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-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-DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
948 AM EDT WED APR 23 2014

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR LOW RELATIVE HUMIDITY AND STRONG WIND FOR EASTERN
PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND THE EASTERN
SHORE OF MARYLAND...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING FOR OR LOW RELATIVE HUMIDITY AND STRONG
WIND FOR EASTERN PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND
THE EASTERN SHORE OF MARYLAND...

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...WINDS WILL INCREASE DURING THE DAY TODAY THEN DECREASE 
  SOMEWHAT AFTER SUNSET BEFORE INCREASING AGAIN ON THURSDAY.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITY VALUES WILL
  GENERALLY BE IN THE LOWER TO MID 30S TODAY BUT SOME AREAS COULD
  GET BELOW 30 PERCENT. ON THURSDAY, RELATIVE HUMIDITY VALUES WILL
  BE LOWER, GENERALLY IN THE TEENS AND 20S.

* TEMPERATURES...HIGHS WILL MAINLY BE IN THE 50S TO AROUND 60 TODAY
  AND IN THE LOWER TO MID 60S ON THURSDAY.

* IMPACTS...THE COMBINATION OF WINDY CONDITIONS AND LOW RELATIVE 
  HUMIDITY VALUES WILL LEAD TO A MORE RAPID SPREAD RATE OF ANY 
  FIRES THAT MAY DEVELOP. RESIDENTS ARE ENCOURAGED TO EXERCISE 
  FIRE PREVENTION WITH ANY OUTDOOR ACTIVITIES AND PROPERLY 
  DISPOSE OF SMOKING MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY DUE TO A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS. ANY
FIRES THAT DEVELOP MAY QUICKLY GET OUT OF CONTROL AND BECOME
DIFFICULT TO CONTAIN.

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

FOR MORE INFORMATION ABOUT WILDFIRE DANGER...BURN RESTRICTIONS...
AND WILDFIRE PREVENTION AND EDUCATION...PLEASE VISIT YOUR STATE
FORESTRY OR ENVIRONMENTAL PROTECTION WEBSITE.

&&

$$
341 
WWUS81 KPHI 231922
RFWPHI

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
322 PM EDT WED APR 23 2014

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-070-071-101>106-241030-
/O.CON.KPHI.FW.W.0001.000000T0000Z-140424T0000Z/
/O.CON.KPHI.FW.A.0003.140424T1500Z-140425T0000Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-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-DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
322 PM EDT WED APR 23 2014

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR LOW RELATIVE HUMIDITY AND STRONG WIND FOR EASTERN
PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND THE EASTERN
SHORE OF MARYLAND...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING FOR OR LOW RELATIVE HUMIDITY AND STRONG
WIND FOR EASTERN PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND
THE EASTERN SHORE OF MARYLAND...

* WINDS...NORTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* TIMING...WINDS WILL REMAIN GUSTY INTO THIS EVENING, THEN
  DECREASE SOMEWHAT AFTER SUNSET BEFORE INCREASING AGAIN ON
  THURSDAY.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITY VALUES WILL BOTTOM
  OUT IN THE 30S TODAY. ON THURSDAY, RELATIVE HUMIDITY VALUES
  WILL BE LOWER, GENERALLY IN THE TEENS AND 20S.

* TEMPERATURES...HIGHS WILL MAINLY BE IN THE MID 50S TO AROUND 60
  TODAY AND IN THE MID 50S TO MID 60S ON THURSDAY.

* IMPACTS...THE COMBINATION OF WINDY CONDITIONS AND LOW RELATIVE 
  HUMIDITY VALUES WILL LEAD TO A MORE RAPID SPREAD RATE OF ANY 
  FIRES THAT MAY DEVELOP. RESIDENTS ARE ENCOURAGED TO EXERCISE 
  FIRE PREVENTION WITH ANY OUTDOOR ACTIVITIES AND PROPERLY 
  DISPOSE OF SMOKING MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY DUE TO A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS. ANY
FIRES THAT DEVELOP MAY QUICKLY GET OUT OF CONTROL AND BECOME
DIFFICULT TO CONTAIN.

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

FOR MORE INFORMATION ABOUT WILDFIRE DANGER...BURN RESTRICTIONS...
AND WILDFIRE PREVENTION AND EDUCATION...PLEASE VISIT YOUR STATE
FORESTRY OR ENVIRONMENTAL PROTECTION WEBSITE.

&&

$$
721 
WWUS81 KPHI 232327
RFWPHI

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
727 PM EDT WED APR 23 2014

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-070-071-101>106-241430-
/O.CAN.KPHI.FW.W.0001.000000T0000Z-140424T0000Z/
/O.UPG.KPHI.FW.A.0003.140424T1500Z-140425T0000Z/
/O.NEW.KPHI.FW.W.0002.140424T1400Z-140425T0000Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-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-DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
727 PM EDT WED APR 23 2014

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM EDT THURSDAY FOR
LOW RELATIVE HUMIDTY AND STRONG WIND FOR EASTERN
PENNSYLVANIA...MOST OF NEW JERSEY...DELAWARE AND THE EASTERN SHORE
OF MARYLAND...

* WINDS...NORTHWEST 15 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* TIMING...STRONGEST WINDS WILL BE LATE MORNING INTO THE EARLY
  AFTERNOON THURSDAY, WITH THE LOWEST HUMIDITIES FROM LATE MORNING
  INTO THE EARLY EVENING.

* RELATIVE HUMIDITY...AS LOW AS THE UPPER TEENS TO LOW 20S.

* TEMPERATURES...RANGING FORM THE UPPER 5OS AND LOW 60S UP NORTH,
  TO THE MID TO UPPER 60S ELSEWHERE.

* IMPACTS...THE COMBINATION OF WINDY CONDITIONS AND LOW RELATIVE 
  HUMIDITY VALUES WILL LEAD TO A MORE RAPID SPREAD RATE OF ANY 
  FIRES THAT MAY DEVELOP. RESIDENTS ARE ENCOURAGED TO EXERCISE 
  FIRE PREVENTION WITH ANY OUTDOOR ACTIVITIES AND PROPERLY 
  DISPOSE OF SMOKING MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY DUE TO A COMBINATION
OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS. ANY
FIRES THAT DEVELOP MAY QUICKLY GET OUT OF CONTROL AND BECOME
DIFFICULT TO CONTAIN.

FOR MORE INFORMATION ABOUT WILDFIRE DANGER...BURN RESTRICTIONS...
AND WILDFIRE PREVENTION AND EDUCATIOIN...PLEASE VISIT YOUR STATE
FORESTRY OR ENVIRONMENTAL PROTECTION WEBSITE.

&&

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 4:03 AM EDTFire Weather WatchPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more15 hr
Apr 23, 7:27 PM EDTRed Flag WarningPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more26 hr
Apr 22, 8:29 PM EDTSpecial Weather StatementPHIAtlantic, Burlington46 min
Apr 22, 8:40 PM EDTSpecial Marine WarningPHI50 min
Apr 22, 8:48 PM EDTSpecial Weather StatementPHIAtlantic, Cape May57 min
Apr 23, 9:37 AM EDTSmall Craft AdvisoryPHI26 hr

Nearby

Red Flag Warnings in New Jersey, 2014Red Flag Warnings in Pennsylvania, 2014Red Flag Warnings in Maryland, 2014Every red flag warning in 2014

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.