Alert archive / New Jersey / Red Flag Warnings in 2023

Red Flag Warning 5, NWS Philadelphia/Mount Holly

May 16, 20235 counties in New Jersey

NWS Philadelphia/Mount Holly issued this red flag warning at May 16, 2023, 3:02 PM EDT for 5 counties in New Jersey. It took effect at May 17, 2023, 9:00 AM EDT. It was in force for 11 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
May 16, 2023, 3:02 PM EDT (19:02 UTC)
In effect from
May 17, 2023, 9:00 AM EDT
Expired
May 17, 2023, 8:00 PM EDT
In force
11 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 35 km from the middle of the area, began a volume at 19:04 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

Brookhaven, NY (KOKX), launched 12:00Z, 7.0 hours before the alert went out and 201 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, Brookhaven, NY at 12:00Z on 2023-05-16Temperature 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 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2023-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.19395878Sfc1 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
2561 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

116 
WWUS81 KPHI 161902
RFWPHI

URGENT - FIRE WEATHER MESSAGE
National Weather Service Mount Holly NJ
302 PM EDT Tue May 16 2023



NJZ017>020-022-027-170315-
/O.NEW.KPHI.FW.W.0005.230517T1300Z-230518T0000Z/
Gloucester-Camden-Northwestern Burlington-Ocean-Atlantic-
Southeastern Burlington-
302 PM EDT Tue May 16 2023

...RED FLAG WARNING IN EFFECT FROM 9 AM TO 8 PM EDT WEDNESDAY FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR PORTIONS OF SOUTHERN NEW
JERSEY

The National Weather Service in Mount Holly has issued a Red Flag
Warning for gusty winds and low relative humidity, which is in
effect from 9 AM to 8 PM EDT Wednesday.

* AFFECTED AREA...Gloucester, Camden, Northwestern Burlington, 
  Ocean, Atlantic and Southeastern Burlington.

* TIMING...Wednesday morning through early evening. 

* WINDS...North 10 to 15 gusting 20 to 25 mph. 

* RELATIVE HUMIDITY...As low as 20 percent.

* TEMPERATURES...In the mid to upper 60s.

* IMPACTS...The combination of dry conditions, low relative
  humidity, and gusty winds will result in favorable conditions
  for the rapid spread of fires on Wednesday. 

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.

&&

$$

Fitzsimmons
4 follow-up statements
848 
WWUS81 KPHI 170344
RFWPHI

URGENT - FIRE WEATHER MESSAGE
National Weather Service Mount Holly NJ
1144 PM EDT Tue May 16 2023

NJZ017>020-022-027-171200-
/O.CON.KPHI.FW.W.0005.230517T1300Z-230518T0000Z/
Gloucester-Camden-Northwestern Burlington-Ocean-Atlantic-
Southeastern Burlington-
1144 PM EDT Tue May 16 2023

...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 8 PM EDT 
WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR PARTS OF 
SOUTHERN NEW JERSEY...

* AFFECTED AREA...The New Jersey counties of Gloucester, Camden, 
  Burlington, Ocean and Atlantic.

* TIMING...Wednesday morning through early Wednesday evening.

* WINDS...North 10 to 15 mph gusting to 20 to 25 mph.

* RELATIVE HUMIDITY...As low as 20 percent.

* TEMPERATURES...In the middle to upper 60s.

* IMPACTS...The combination of dry conditions, low relative
  humidity and gusty winds will result in favorable conditions 
  for the rapid spread of wildfires on Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions 
are expected 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.

&&

$$

Iovino
592 
WWUS81 KPHI 170724
RFWPHI

URGENT - FIRE WEATHER MESSAGE
National Weather Service Mount Holly NJ
324 AM EDT Wed May 17 2023

NJZ017>020-022-027-180000-
/O.CON.KPHI.FW.W.0005.230517T1300Z-230518T0000Z/
Gloucester-Camden-Northwestern Burlington-Ocean-Atlantic-
Southeastern Burlington-
324 AM EDT Wed May 17 2023

...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 8
PM EDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR
PARTS OF SOUTHERN NEW JERSEY..

* AFFECTED AREA...The New Jersey counties of Gloucester, Camden, 
  Burlington, Ocean and Atlantic.

* TIMING...This morning through early this evening.

* WINDS...North 10 to 15 mph gusting to 20 to 25 mph.

* RELATIVE HUMIDITY...As low as 20 percent.

* TEMPERATURES...Reaching 65 to 70 degrees.

* IMPACTS...The combination of dry conditions, low relative 
  humidity and gusty winds will result in favorable conditions for
  the rapid spread of wildfires today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions 
are expected 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.

&&

$$

Iovino
253 
WWUS81 KPHI 171335
RFWPHI

URGENT - FIRE WEATHER MESSAGE
National Weather Service Mount Holly NJ
935 AM EDT Wed May 17 2023

NJZ017>020-022-027-180000-
/O.CON.KPHI.FW.W.0005.000000T0000Z-230518T0000Z/
Gloucester-Camden-Northwestern Burlington-Ocean-Atlantic-
Southeastern Burlington-
935 AM EDT Wed May 17 2023

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR PARTS OF SOUTHERN 
NEW JERSEY...

* AFFECTED AREA...Gloucester, Camden, Burlington, Ocean and
  Atlantic counties, especially the Pine Barrens.

* TIMING...Through early this evening, with the driest conditions
  occurring this afternoon.

* WINDS...North 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 20 percent.

* TEMPERATURES...In the mid to upper 60s.

* IMPACTS...The combination of dry conditions, low relative 
  humidity and gusty winds will result in favorable conditions 
  for the rapid spread of wildfires today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are expected 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.

&&

$$

Iovino/Gorse
376 
WWUS81 KPHI 171933
RFWPHI

URGENT - FIRE WEATHER MESSAGE
National Weather Service Mount Holly NJ
333 PM EDT Wed May 17 2023

NJZ017>020-022-027-180000-
/O.CON.KPHI.FW.W.0005.000000T0000Z-230518T0000Z/
Gloucester-Camden-Northwestern Burlington-Ocean-Atlantic-
Southeastern Burlington-
333 PM EDT Wed May 17 2023

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR PARTS OF SOUTHERN
NEW JERSEY...

* AFFECTED AREA...Gloucester, Camden, Burlington, Ocean and
  Atlantic counties, especially the Pine Barrens.

* TIMING...Through early this evening.

* WINDS...North-northwest 10 to 20 mph with gusts to 25 mph.

* RELATIVE HUMIDITY...As low as 20 percent.

* TEMPERATURES...In the upper 60s before cooling this evening.

* IMPACTS...The combination of dry conditions, low relative
  humidity and gusty winds will result in favorable conditions for
  the rapid spread of wildfires into this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are expected 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.

&&

$$

Gorse

Nearby

Red Flag Warnings in New Jersey, 2023Every red flag warning in 2023

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.