Alert archive / New Jersey / Red Flag Warnings in 2018
Red Flag Warning 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at May 3, 2018, 3:35 AM EDT for 11 counties in New Jersey; 4 counties in Pennsylvania. It took effect at May 3, 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
- May 3, 2018, 3:35 AM EDT (07:35 UTC)
- In effect from
- May 3, 2018, 10:00 AM EDT
- Expired
- May 3, 2018, 8:00 PM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 41 km from the middle of the area, began a volume at 07:41 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, 7.6 hours before the alert went out and 203 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
- 3040 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
797 WWUS81 KPHI 030735 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 335 AM EDT Thu May 3 2018 NJZ012>027-PAZ070-071-104-106-032045- /O.NEW.KPHI.FW.W.0003.180503T1400Z-180504T0000Z/ 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-Delaware-Philadelphia- Eastern Montgomery-Lower Bucks- 335 AM EDT Thu May 3 2018 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT THIS EVENING FOR FAR SOUTHEASTERN PENNSYLVANIA AND PORTIONS OF SOUTHERN AND CENTRAL 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. * AFFECTED AREA...Areas along and east of Interstate 95 in southeastern Pennsylvania and in southern and central New Jersey. * TIMING...From late this morning through sunset this evening with the strongest winds and lowest relative humidity values occurring from 3 PM through 6 PM. * WINDS...West-southwest 10 to 15 mph with gusts to 25 mph. * RELATIVE HUMIDITY...Around 30 percent. * TEMPERATURES...In the upper 80s to lower 90s inland and upper 70s to lower 80s near the coast. * IMPACTS...The combination of low fuel moisture, low relative humidity, and gusty winds will 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. && $$
1 follow-up statement
774 WWUS81 KPHI 032352 RFWPHI URGENT - FIRE WEATHER MESSAGE National Weather Service Mount Holly NJ 752 PM EDT Thu May 3 2018 NJZ012>027-PAZ070-071-104-106-040100- /O.EXP.KPHI.FW.W.0003.000000T0000Z-180504T0000Z/ Middlesex-Western Monmouth-Eastern Monmouth-Mercer-Salem- Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic- Coastal Ocean-Southeastern Burlington-Delaware-Philadelphia- Eastern Montgomery-Lower Bucks- 752 PM EDT Thu May 3 2018 ...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING... The Red Flag Warning for central and southern New Jersey and for parts of southeastern Pennsylvania will expire at 8:00 PM. $$ Iovino
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 4:35 AM EDT | Small Craft Advisory | PHI | 49 hr | |
| May 3, 5:18 PM EDT | Special Weather Statement | PHI | Sussex | 42 min |
| May 3, 5:43 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 32 min |
| May 3, 6:10 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Warren | 35 min |
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.