Alert archive / New Jersey / Red Flag Warnings in 2007
Red Flag Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Apr 23, 2007, 3:45 AM EDT for 7 counties in New Jersey; 7 counties in Pennsylvania. It took effect at Apr 23, 2007, 10:59 AM EDT. It was in force for 8 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 23, 2007, 3:45 AM EDT (07:45 UTC)
- In effect from
- Apr 23, 2007, 10:59 AM EDT
- Expired
- Apr 23, 2007, 7:00 PM EDT
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris 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), 93 km from the middle of the area, began a volume at 07:49 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, 7.8 hours before the alert went out and 190 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
- 3064 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS81 KPHI 230745 RFWPHI RED FLAG WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 345 AM EDT MON APR 23 2007 PAZ054-055-060>062-067>071-231900- /O.UPG.KPHI.FW.A.0001.070423T1500Z-070423T2300Z/ /O.NEW.KPHI.FW.W.0002.070423T1700Z-070423T2300Z/ CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- 345 AM EDT MON APR 23 2007 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. TEMPERATURES RISING INTO THE UPPER 70S TO MID 80S TODAY WILL COMBINE WITH SOUTHWEST WINDS IN THE 15 TO 20 MPH RANGE AND RELATIVE HUMIDITIES OF LESS THAN 30 PERCENT TO CREATE CONDITIONS CONDUCIVE FOR THE STARTING AND SPREADING OF BRUSH AND WILD FIRES, ESPECIALLY SINCE FINE FUELS HAVE BECOME VERY DRY. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO OCCUR. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITIES...AND DRY FUELS WILL CREATE AN ENVIRONMENT FOR SIGNIFICANT FIRE GROWTH. $$ RPW
2 follow-up statements
000 WWUS81 KPHI 231459 RFWPHI RED FLAG WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1059 AM EDT MON APR 23 2007 NJZ001-007>010-012-015-232300- /O.EXA.KPHI.FW.W.0002.070423T1700Z-070423T2300Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER- 1059 AM EDT MON APR 23 2007 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM EDT THIS EVENING. TEMPERATURES RISING INTO THE LOWER TO MID 80S TODAY WILL COMBINE WITH SOUTHWEST WINDS IN THE 15 TO 20 MPH RANGE WITH GUSTS TO 25 MPH AND RELATIVE HUMIDITIES OF LESS THAN 30 PERCENT TO CREATE CONDITIONS CONDUCIVE FOR THE STARTING AND SPREADING OF BRUSH AND WILD FIRES... ESPECIALLY SINCE FINE FUELS HAVE BECOME VERY DRY. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO OCCUR. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITIES...AND DRY FUELS WILL CREATE AN ENVIRONMENT FOR SIGNIFICANT FIRE GROWTH. $$ PAZ054-055-060>062-067>071-232300- /O.CON.KPHI.FW.W.0002.070423T1700Z-070423T2300Z/ CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS- DELAWARE-PHILADELPHIA- 1059 AM EDT MON APR 23 2007 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING. TEMPERATURES RISING INTO THE UPPER 70S TO MID 80S TODAY WILL COMBINE WITH SOUTHWEST WINDS IN THE 15 TO 20 MPH RANGE WITH GUSTS TO 25 MPH AND RELATIVE HUMIDITIES OF LESS THAN 30 PERCENT TO CREATE CONDITIONS CONDUCIVE FOR THE STARTING AND SPREADING OF BRUSH AND WILD FIRES... ESPECIALLY SINCE FINE FUELS HAVE BECOME VERY DRY. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO OCCUR. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITIES...AND DRY FUELS WILL CREATE AN ENVIRONMENT FOR SIGNIFICANT FIRE GROWTH. $$
000 WWUS81 KPHI 232257 RFWPHI RED FLAG WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 657 PM EDT MON APR 23 2007 NJZ001-007>010-012-015-PAZ054-055-060>062-067>071-240000- /O.EXP.KPHI.FW.W.0002.000000T0000Z-070423T2300Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CARBON- MONROE-BERKS-LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE- PHILADELPHIA- 657 PM EDT MON APR 23 2007 ...RED FLAG WARNING WILL EXPIRE AT 7 PM EDT THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 7 PM EDT THIS EVENING. $$ MPD
Nearby
Red Flag Warnings in New Jersey, 2007Red Flag Warnings in Pennsylvania, 2007Every red flag warning in 2007
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.