Alert archive / New Jersey / Red Flag Warnings in 2010
Red Flag Warning 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Jul 1, 2010, 3:55 AM EDT for 4 states. It took effect at Jul 1, 2010, 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
- Jul 1, 2010, 3:55 AM EDT (07:55 UTC)
- In effect from
- Jul 1, 2010, 10:00 AM EDT
- Expired
- Jul 1, 2010, 8:00 PM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 24 counties
New Castle County, DE, Cecil County, MD, Kent 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, Sussex County, NJ, Warren County, NJ, Berks County, PA, Delaware County, PA, Lehigh County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 07:56 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, 7.9 hours before the alert went out and 204 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
- 10 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1525 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
573 WWUS81 KPHI 010755 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 355 AM EDT THU JUL 1 2010 DEZ001-MDZ008-012-NJZ001-007>010-012>027-PAZ060>062-067>071- 011600- /O.NEW.KPHI.FW.W.0011.100701T1400Z-100702T0000Z/ NEW CASTLE-CECIL-KENT MD-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-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 355 AM EDT THU JUL 1 2010 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM EDT THIS EVENING. RELATIVE HUMIDITY LEVELS ARE EXPECTED TO DROP BELOW 30 PERCENT FOR A GOOD PORTION OF THE AREA LATER THIS AFTERNOON AND WINDS COULD GUST OVER 20 MPH FOR SEVERAL HOURS ONCE AGAIN. WITH THE LACK OF SUBSTANTIAL RAIN FOR MUCH OF THE AREA...10 HOUR FUELS ARE QUITE LOW AS WELL. WINDS ARE EXPECTED TO DIMINISH AND HUMIDITY LEVELS SHOULD RISE AFTER SUNSET. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ ROBERTSON
1 follow-up statement
463 WWUS81 KPHI 011509 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1109 AM EDT THU JUL 1 2010 DEZ001-MDZ008-012-NJZ001-007>010-012>027-PAZ060>062-067>071- 020000- /O.CON.KPHI.FW.W.0011.000000T0000Z-100702T0000Z/ NEW CASTLE-CECIL-KENT MD-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET- MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM- GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN-SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 1109 AM EDT THU JUL 1 2010 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. RELATIVE HUMIDITY LEVELS ARE EXPECTED TO DROP BELOW 30 PERCENT FOR A GOOD PORTION OF THE AREA LATER THIS AFTERNOON AND WINDS COULD GUST OVER 20 MPH FOR SEVERAL HOURS ONCE AGAIN. WITH THE LACK OF SUBSTANTIAL RAIN FOR MUCH OF THE AREA...10 HOUR FUELS ARE QUITE LOW AS WELL. WINDS ARE EXPECTED TO DIMINISH AND HUMIDITY LEVELS SHOULD RISE AFTER SUNSET. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ AMC
Nearby
Red Flag Warnings in New Jersey, 2010Red Flag Warnings in Pennsylvania, 2010Red Flag Warnings in Maryland, 2010Every red flag warning in 2010
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.