Alert archive / New Jersey / Red Flag Warnings in 2012
Red Flag Warning 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Apr 17, 2012, 3:28 AM EDT for 16 counties in New Jersey; 7 counties in Pennsylvania. It took effect at Apr 17, 2012, 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 17, 2012, 3:28 AM EDT (07:28 UTC)
- In effect from
- Apr 17, 2012, 10:00 AM EDT
- Expired
- Apr 17, 2012, 8:00 PM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 23 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, Carbon County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 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
Brookhaven, NY (KOKX), launched 00:00Z, 7.5 hours before the alert went out and 192 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
- 1779 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
398 WWUS81 KPHI 170728 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 328 AM EDT TUE APR 17 2012 NJZ001-007>010-012>027-PAZ054-055-060>062-067>071-180000- /O.UPG.KPHI.FW.A.0008.120417T1400Z-120418T0000Z/ /O.NEW.KPHI.FW.W.0009.120417T1400Z-120418T0000Z/ 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- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 328 AM EDT TUE APR 17 2012 ...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. IT IS IN EFFECT FROM 1000 AM UNTIL 800 PM. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREAS...THE POCONOS, THE LEHIGH VALLEY, BERKS COUNTY AND SOUTHEASTERN PENNSYLVANIA, AS WELL AS NORTHWESTERN, CENTRAL AND SOUTHERN NEW JERSEY. * WINDS...NORTHWEST AT 10 TO 15 MPH TODAY WITH GUSTS AROUND 20 MPH. * RELATIVE HUMIDITY...MAINLY IN THE 20 TO 30 PERCENT RANGE FROM LATE THIS MORNING INTO THE EARLY EVENING HOURS. * IMPACTS...THE POTENTIAL FOR THE RAPID SPREAD OF WILDFIRES REMAINS HIGH TODAY DUE TO THE EXPECTED GUSTY WINDS AND THE CONTINUED DRY CONDITIONS. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED DUE TO THE COMBINATION OF GUSTY WINDS, LOW RELATIVE HUMIDITY VALUES AND DRY FINE FUELS. && $$ IOVINO
1 follow-up statement
406 WWUS81 KPHI 172350 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 750 PM EDT TUE APR 17 2012 NJZ001-007>010-012>027-PAZ054-055-060>062-067>071-180100- /O.EXP.KPHI.FW.W.0009.000000T0000Z-120418T0000Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 750 PM EDT TUE APR 17 2012 ...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING... RELATIVE HUMIDITY VALUES WILL REMAIN LOW FOR A FEW HOURS THIS EVENING BEFORE RISING OVERNIGHT. HOWEVER, WINDS HAVE DROPPED BELOW 20 MPH, THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. $$ ROBERTSON
Nearby
Red Flag Warnings in New Jersey, 2012Red Flag Warnings in Pennsylvania, 2012Every red flag warning in 2012
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.