Alert archive / New Jersey / Red Flag Warnings in 2021
Red Flag Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Mar 14, 2021, 4:22 AM EDT for 4 states. It took effect at Mar 14, 2021, 8:00 AM EDT. It was in force for 33 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
- Mar 14, 2021, 4:22 AM EDT (08:22 UTC)
- In effect from
- Mar 14, 2021, 8:00 AM EDT
- Expired
- Mar 15, 2021, 5:00 PM EDT
- In force
- 33 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 30 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline 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, Warren County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 67 km from the middle of the area, began a volume at 08:23 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, 8.4 hours before the alert went out and 216 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
- 3125 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
711 WWUS81 KPHI 140822 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 422 AM EDT Sun Mar 14 2021 DEZ001>004-MDZ012-015-019-020-NJZ007>010-012>027-PAZ060>062-070- 071-101>106-142100- /O.UPG.KPHI.FW.A.0001.210314T1200Z-210315T1200Z/ /O.NEW.KPHI.FW.W.0001.210314T1200Z-210315T2100Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD- Queen Annes-Talbot-Caroline-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-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 422 AM EDT Sun Mar 14 2021 ...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 5 PM EDT MONDAY... The National Weather Service in Mount Holly has issued a Red Flag Warning. It is in effect from 8:00 AM this morning until 5:00 PM Monday. * AFFECTED AREAS...Berks County, the Lehigh Valley and southeastern Pennsylvania. Also, most of New Jersey, all of Delaware, and parts of eastern Maryland. * TIMING...Through late Monday afternoon. * WINDS...Northwest increasing to 20 to 25 mph with gusts around 35 to 40 mph for this afternoon and evening. Northwest 10 to 15 mph with gusts around 20 mph from late tonight into Monday. * RELATIVE HUMIDITY...Dropping to around 20 percent this afternoon, recovering only to 35 to 40 percent late tonight, then falling back to 15 to 20 percent on Monday. * TEMPERATURES...High mainly in the 50s today and in the upper 30s to middle 40s on Monday. Lows tonight mostly in the 20s. * IMPACTS...Gusty winds, very dry air and drying fuels will combine to create conditions favorable for the rapid spread of wildfires. 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
4 follow-up statements
907 WWUS81 KPHI 141922 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 322 PM EDT Sun Mar 14 2021 DEZ001>004-MDZ012-015-019-020-NJZ007>010-012>027-PAZ060>062-070- 071-101>106-150330- /O.CON.KPHI.FW.W.0001.000000T0000Z-210315T2100Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD- Queen Annes-Talbot-Caroline-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-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 322 PM EDT Sun Mar 14 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM EDT MONDAY... * AFFECTED AREAS...Berks County, the Lehigh Valley and southeastern Pennsylvania. Also, most of New Jersey, all of Delaware, and parts of eastern Maryland. * TIMING...Through late Monday afternoon. * WINDS...Northwest 15 to 25 mph with gusts up to 50 mph. Northwest winds from 10 to 15 mph with gusts to around 20 mph late tonight into Monday. * RELATIVE HUMIDITY...As low as 15 percent through this evening, recovering into the 35 to 40 percent range late tonight then dropping back to 15 to 20 percent Monday afternoon. * TEMPERATURES...In the 50s this afternoon, dropping into the upper 30s to lower 40s Monday. Lows in the low to mid 20s tonight. * IMPACTS...Gusty winds, very dry air and drying fuels will combine to create conditions favorable for the rapid spread of wildfires. 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. && $$
879 WWUS81 KPHI 150120 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 920 PM EDT Sun Mar 14 2021 DEZ001>004-MDZ012-015-019-020-NJZ007>010-012>027-PAZ060>062-070- 071-101>106-151000- /O.CON.KPHI.FW.W.0001.000000T0000Z-210315T2100Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD- Queen Annes-Talbot-Caroline-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-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 920 PM EDT Sun Mar 14 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM EDT MONDAY... * AFFECTED AREAS...Berks County, the Lehigh Valley and southeastern Pennsylvania. Also, most of New Jersey, all of Delaware, and parts of eastern Maryland. * TIMING...Through late Monday afternoon. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 percent. * TEMPERATURES...Lows in the low 20s tonight. Highs in the upper 30s to near 40 on Monday. * IMPACTS...Gusty winds, very dry air and drying fuels will combine to create conditions favorable for the rapid spread of wildfires. 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. && $$
431 WWUS81 KPHI 150728 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 328 AM EDT Mon Mar 15 2021 DEZ001>004-MDZ012-015-019-020-NJZ007>010-012>027-PAZ060>062-070- 071-101>106-152100- /O.CON.KPHI.FW.W.0001.000000T0000Z-210315T2100Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD- Queen Annes-Talbot-Caroline-Warren-Morris-Hunterdon-Somerset- Middlesex-Western Monmouth-Eastern Monmouth-Mercer-Salem- Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic- Coastal Ocean-Southeastern Burlington-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 328 AM EDT Mon Mar 15 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM EDT... * AFFECTED AREAS...Berks County, the Lehigh Valley and southeastern Pennsylvania. Also, most of New Jersey, all of Delaware, and parts of eastern Maryland. * TIMING...Through late this afternoon. * WINDS...Northwest 10 to 20 mph with gusts around 25 mph. * RELATIVE HUMIDITY...Dropping to 10 to 20 percent. * TEMPERATURES...Highs today ranging from the upper 30s to the middle 40s. * IMPACTS...Gusty winds, very dry air and very dry fuels will combine to create conditions favorable for the rapid spread of wildfires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are expected due to a combination of strong winds, low relative humidity and dry fuels. Any fires that develop may quickly get out of control and become difficult to contain. For more information about wildfire danger, burn restrictions, and wildfire prevention and education, please visit your state forestry or environmental protection website. && $$ Iovino
606 WWUS81 KPHI 152053 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 453 PM EDT Mon Mar 15 2021 DEZ001>004-MDZ012-015-019-020-NJZ007>010-012>027-PAZ060>062-070- 071-101>106-152200- /O.EXP.KPHI.FW.W.0001.000000T0000Z-210315T2100Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD- Queen Annes-Talbot-Caroline-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-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 453 PM EDT Mon Mar 15 2021 ...RED FLAG WARNING WILL EXPIRE AT 5 PM EDT... Winds are diminishing across the region and will continue to do so this evening, decreasing the threat of rapid fire spread. Therefore the Red Flag Warning is cancelled. While winds are diminishing, relative humidity values remain very low. Continue to exercise normal caution with potential ignition sources for fires. $$ JEO
Nearby
Red Flag Warnings in New Jersey, 2021Red Flag Warnings in Pennsylvania, 2021Red Flag Warnings in Maryland, 2021Every red flag warning in 2021
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.