Alert archive / New Jersey / Red Flag Warnings in 2018
Red Flag Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at May 2, 2018, 3:42 AM EDT for 10 counties in Pennsylvania; 16 counties in New Jersey. It took effect at May 2, 2018, 10:00 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 2, 2018, 3:42 AM EDT (07:42 UTC)
- In effect from
- May 2, 2018, 10:00 AM EDT
- Expired
- May 2, 2018, 9:00 PM EDT
- In force
- 11 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 26 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, 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), 61 km from the middle of the area, began a volume at 07:44 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 00:00Z, 7.7 hours before the alert went out and 196 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2972 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 404 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
118 WWUS81 KPHI 020742 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 342 AM EDT Wed May 2 2018 NJZ013-014-016>027-022045- /O.UPG.KPHI.FW.A.0002.180502T1400Z-180503T0000Z/ /O.NEW.KPHI.FW.W.0002.180502T1400Z-180503T0100Z/ Western Monmouth-Eastern Monmouth-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 342 AM EDT Wed May 2 2018 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 9 PM EDT THIS EVENING FOR CENTRAL AND SOUTHERN NEW JERSEY... The National Weather Service in Mount Holly has issued a Red Flag Warning for the potential of enhanced fire spread, which is in effect from 10 AM this morning to 9 PM EDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Central and southern portions of New Jersey. * TIMING...From late this morning through just after sunset this evening. * WINDS...Southwest 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 20 to 25 percent. * TEMPERATURES...In the mid 80s, except mid 70s near the coast. * IMPACTS...The combination of low fuel moisture, low relative humidity, and gusty winds may contribute to the enhanced spread of fires. 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. && $$ NJZ001-007>010-012-015-PAZ054-055-060>062-070-071-101>106-022045- /O.NEW.KPHI.FW.W.0002.180502T1400Z-180503T0100Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Carbon- Monroe-Berks-Lehigh-Northampton-Delaware-Philadelphia- Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- 342 AM EDT Wed May 2 2018 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 9 PM EDT THIS EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA... The National Weather Service in Mount Holly has issued a Red Flag Warning for the potential of enhanced fire spread, which is in effect from 10 AM this morning to 9 PM EDT this evening. * AFFECTED AREA...Eastern Pennsylvania and northwestern New Jersey. * TIMING...From late this morning through just after sunset this evening. * WINDS...Southwest 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 25 to 30 percent. * TEMPERATURES...In the lower to mid 80s, except upper 70s in the southern Poconos. * IMPACTS...The combination of low fuel moisture, low relative humidity, and gusty winds may contribute to the enhanced spread of fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly due to a combination of strong winds...low relative humidity...and dry fuels. Any fires that develop may quickly get out of control and become difficult to contain. For more information about wildfire danger...burn restrictions... and wildfire prevention and education...please visit your state forestry or environmental protection website. && $$
3 follow-up statements
483 WWUS81 KPHI 020757 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 357 AM EDT Wed May 2 2018 NJZ001-007>010-012>027-PAZ054-055-060>062-070-071-101>106-030100- /O.CON.KPHI.FW.W.0002.180502T1400Z-180503T0100Z/ 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- 357 AM EDT Wed May 2 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 9 PM EDT THIS EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA... * AFFECTED AREA...New Jersey and eastern Pennsylvania. * TIMING...From late this morning through just after sunset this evening. * WINDS...Southwest 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 20 to 25 percent. * TEMPERATURES...In the lower to mid 80s, except mid to upper 70s near the coast and in the southern Poconos. * IMPACTS...The combination of low fuel moisture, low relative humidity, and gusty winds may contribute to the enhanced spread of fires. 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. && $$
564 WWUS81 KPHI 021934 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 334 PM EDT Wed May 2 2018 NJZ001-007>010-012>027-PAZ054-055-060>062-070-071-101>106-030100- /O.CON.KPHI.FW.W.0002.000000T0000Z-180503T0100Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 334 PM EDT Wed May 2 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA... * AFFECTED AREA...New Jersey and eastern Pennsylvania. * TIMING...Through just after sunset this evening. * WINDS...Southwest around 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * TEMPERATURES...In the middle 80s, except in the upper 70s to low 80s near the coast and in the southern Poconos. * IMPACTS...The combination of low fuel moisture, low relative humidity, and gusty winds may contribute to the enhanced spread of fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly due to a combination of strong winds...low relative humidity...and dry fuels. Any fires that develop may quickly get out of control and become difficult to contain. For more information about wildfire danger...burn restrictions... and wildfire prevention and education...please visit your state forestry or environmental protection website. && $$ MPS
620 WWUS81 KPHI 030049 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 849 PM EDT Wed May 2 2018 NJZ001-007>010-012>027-PAZ054-055-060>062-070-071-101>106-030200- /O.EXP.KPHI.FW.W.0002.000000T0000Z-180503T0100Z/ 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- 849 PM EDT Wed May 2 2018 ...RED FLAG WARNING WILL EXPIRE AT 9 PM EDT THIS EVENING FOR STRONG WINDS AND LOW RH FOR NEW JERSEY AND EASTERN PENNSYLVANIA... Relative humidity values have begun to recover and winds have diminished. Therefore, the red flag warning will be allowed to expire at 9 PM. $$ SFJ
Nearby
Red Flag Warnings in New Jersey, 2018Red Flag Warnings in Pennsylvania, 2018Every red flag warning in 2018
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.