Alert archive / New Jersey / Red Flag Warnings in 2018
Red Flag Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Apr 30, 2018, 3:31 AM EDT for Kent County, New Castle County, Sussex County, Delaware; 8 counties in New Jersey; 5 counties in Maryland. It took effect at Apr 30, 2018, 10:00 AM EDT. It was in force for 10 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 30, 2018, 3:31 AM EDT (07:31 UTC)
- In effect from
- Apr 30, 2018, 10:00 AM EDT
- Expired
- Apr 30, 2018, 8:00 PM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
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, Ocean County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 07:30 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 7.5 hours before the alert went out and 158 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
- 1796 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
861 WWUS81 KPHI 300731 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 331 AM EDT Mon Apr 30 2018 DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-302045- /O.UPG.KPHI.FW.A.0001.180430T1400Z-180501T0000Z/ /O.NEW.KPHI.FW.W.0001.180430T1400Z-180501T0000Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD- Queen Annes-Talbot-Caroline-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 331 AM EDT Mon Apr 30 2018 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT THIS EVENING FOR PORTIONS OF EASTERN MARYLAND, DELAWARE, AND PORTIONS OF 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 8 PM EDT this evening. The Fire Weather Watch is no longer in effect. * WINDS...West 15 to 25 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 25 percent. * TEMPERATURES...In the 60s. * IMPACTS...The combination of lowering 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. && $$
3 follow-up statements
767 WWUS81 KPHI 301405 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 1005 AM EDT Mon Apr 30 2018 DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-010000- /O.CON.KPHI.FW.W.0001.000000T0000Z-180501T0000Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD- Queen Annes-Talbot-Caroline-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 1005 AM EDT Mon Apr 30 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR PORTIONS OF EASTERN MARYLAND, DELAWARE, AND PORTIONS OF SOUTHERN NEW JERSEY... The National Weather Service in Mount Holly has issued a Red Flag Warning for the potential of enhanced fire spread, which is in effect until 8 PM EDT this evening. * WINDS...West 15 to 25 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 25 percent. * TEMPERATURES...In the 60s. * IMPACTS...The combination of lowering fuel moisture, low relative humidity, and gusty winds may contribute to the enhanced spread of fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly due to a combination of strong winds...low relative humidity...and dry fuels. Any fires that develop may quickly get out of control and become difficult to contain. For more information about wildfire danger...burn restrictions... and wildfire prevention and education...please visit your state forestry or environmental protection website. && $$
984 WWUS81 KPHI 301857 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 257 PM EDT Mon Apr 30 2018 DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-010000- /O.CON.KPHI.FW.W.0001.000000T0000Z-180501T0000Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD- Queen Annes-Talbot-Caroline-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 257 PM EDT Mon Apr 30 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR PORTIONS OF EASTERN MARYLAND, DELAWARE, AND PORTIONS OF SOUTHERN NEW JERSEY... * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...Upper 50s to lower 60s. * IMPACTS...The combination of lowering 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. && $$
158 WWUS81 KPHI 302354 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 754 PM EDT Mon Apr 30 2018 DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-010100- /O.EXP.KPHI.FW.W.0001.000000T0000Z-180501T0000Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD- Queen Annes-Talbot-Caroline-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 754 PM EDT Mon Apr 30 2018 ...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING... Winds are decreasing with relative humidity levels rising as temperatures cool. Therefore, the Red Flag Warning will be allowed to expire. $$
Nearby
Red Flag Warnings in New Jersey, 2018Red Flag Warnings in Maryland, 2018Red Flag Warnings in Delaware, 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.