Alert archive / New Jersey / Flash Flood Warnings in 2009
Flash Flood Warning 26, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 31, 2009, 5:07 PM EDT for 6 counties in New Jersey. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 31, 2009, 5:07 PM EDT (21:07 UTC)
- Expired
- Jul 31, 2009, 7:43 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 76 km from the middle of the area, began a volume at 21:09 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 31, 5:28 PM EDT | HEAVY RAIN 1.52 | Mount Holly, NJ | 1.52 INCHES OF RAIN WAS MEASURED AT THE SOUTH JERSEY REGIONAL AIRPORT IN 34 MINUTES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.1 hours before the alert went out and 172 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
- 969 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 484 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 312107
FFWPHI
NJC001-005-007-011-015-033-010100-
/O.NEW.KPHI.FF.W.0026.090731T2107Z-090801T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
507 PM EDT FRI JUL 31 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
EASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
SOUTHEASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 900 PM EDT
* AT 504 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
AN AREA OF EXCESSIVE RAINFALL OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VOORHEES...
TABERNACLE...SPRINGDALE...SICKLERVILLE...SHAMONG...MARLTON LAKES...
LUMBERTON...JOBSTOWN...GEORGETOWN...ATSION...ATCO...WRIGHTSTOWN...
WILLIAMSTOWN...WHARTON STATE FOREST...VICTORY LAKES...
TURNERSVILLE...PRESIDENTIAL LAKES...PEMBERTON...MOUNT HOLLY...
MEDFORD...MARLTON...LINDENWOLD...LEISURETOWNE...HAMMONTON...
GLASSBORO...CLAYTON...CHESILHURST...CHATSWORTH...BROWNS MILLS AND
BERLIN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN
DEPTH BY FOOT OR BY AUTOMOBILE.
&&
LAT...LON 3924 7520 3929 7527 3929 7532 3934 7535
3933 7537 3948 7555 4013 7460 3985 7443
$$
KRUZDLO1 follow-up statement
000
WGUS71 KPHI 312343
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
743 PM EDT FRI JUL 31 2009
NJC001-005-007-011-015-033-312353-
/O.CAN.KPHI.FF.W.0026.000000T0000Z-090801T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SALEM NJ-CUMBERLAND NJ-CAMDEN NJ-GLOUCESTER NJ-ATLANTIC NJ-
BURLINGTON NJ-
743 PM EDT FRI JUL 31 2009
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR BURLINGTON...
WESTERN ATLANTIC...EASTERN GLOUCESTER...CAMDEN...CUMBERLAND AND
SOUTHEASTERN SALEM COUNTIES...
LAT...LON 3924 7520 3929 7527 3929 7532 3934 7535
3933 7537 3948 7555 4013 7460 3985 7443
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 2:13 PM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
| Jul 31, 2:36 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Sussex, Warren | 4 hr |
| Jul 31, 4:03 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 57 min |
| Jul 31, 4:08 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 3 hr |
| Jul 31, 4:23 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 31, 4:31 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Salem | 59 min |
| Jul 31, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 96 min |
| Jul 31, 4:56 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset | 114 min |
| Jul 31, 5:10 PM EDT | Tornado Warning | PHI | Burlington, Ocean | 21 min |
| Jul 31, 5:14 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 31, 5:15 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Ocean | 60 min |
| Jul 31, 5:16 PM EDT | Special Marine Warning | PHI | 119 min | |
| Jul 31, 5:31 PM EDT | Flash Flood Warning | PHI | Burlington, Monmouth, Ocean | 4 hr |
| Jul 31, 5:48 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean | 3 hr |
Nearby
Flash Flood Warnings in New Jersey, 2009Every flash flood warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.