Alert archive / New Jersey / Red Flag Warnings in 2011
Red Flag Warning 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Apr 4, 2011, 2:15 PM EDT for Burlington County, Camden County, Ocean County, New Jersey; Caroline County, Maryland; Kent County, Sussex County, Delaware. It was in force for 4 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 4, 2011, 2:15 PM EDT (18:15 UTC)
- Expired
- Apr 4, 2011, 5:59 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Burlington County, NJ, Camden County, NJ, Ocean County, NJ
The radar
The Dover AFB radar (KDOX), 67 km from the middle of the area, began a volume at 18:19 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.3 hours before the alert went out and 87 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
- 1100 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 494 m²/s²
- 0-3 km storm-relative helicity
- 547 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
411 WWUS81 KPHI 041815 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 215 PM EDT MON APR 4 2011 DEZ002-003-MDZ020-NJZ018>020-027-042200- /O.NEW.KPHI.FW.W.0006.110404T1815Z-110404T2200Z/ KENT-INLAND SUSSEX-CAROLINE-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- SOUTHEASTERN BURLINGTON- 215 PM EDT MON APR 4 2011 ...RED FLAG WARNING IN EFFECT UNTIL 6 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 6 PM EDT THIS EVENING. A SHORT FUSED RED FLAG WARNING HAS BEEN ISSUED FOR A PORTION OF SOUTHERN AND CENTRAL DELAWARE...A PORTION OF EASTERN MARYLAND ADJACENT TO SOUTHERN DELAWARE... AND A PORTION SOUTH CENTRAL NEW JERSEY...ALL POINTS AWAY FROM THE INFLUENCE OF THE COASTAL WATERS. HUMIDITY AT 2 PM WAS CLOSE TO 30 PERCENT AND EXPECTED TO DROP ANOTHER 2 TO 5 PERCENT THIS AFTERNOON AS TEMPERATURES RISE SEVERAL MORE DEGREES. SUSTAINED OR GUSTY SOUTHWEST WINDS SHOULD EXCEED 20 MILES AN HOUR FOR AN HOUR OR 2... IN THESE SMALL WARNING AREAS. 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. && $$ DRAG
1 follow-up statement
706 WWUS81 KPHI 042159 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 559 PM EDT MON APR 4 2011 DEZ002-003-MDZ020-NJZ018>020-027-042300- /O.CAN.KPHI.FW.W.0006.000000T0000Z-110404T2200Z/ KENT-INLAND SUSSEX-CAROLINE-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- SOUTHEASTERN BURLINGTON- 559 PM EDT MON APR 4 2011 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE RED FLAG WARNING. HUMIDITY LEVELS ARE ON THE RISE WILL RISE OVER THE NEXT COUPLE OF HOURS AND WINDS WILL DIMINISH SLOWLY. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 4:07 AM EDT | Gale Warning | PHI | 35 hr | |
| Apr 4, 3:24 PM EDT | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more | 22 hr |
| Apr 3, 10:29 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 61 min |
| Apr 3, 11:09 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 66 min |
Nearby
Red Flag Warnings in New Jersey, 2011Red Flag Warnings in Delaware, 2011Red Flag Warnings in Maryland, 2011Every red flag warning in 2011
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.