Alert archive / New Jersey / Flash Flood Warnings in 2001

Flash Flood Warning 58, NWS Philadelphia/Mount Holly

August 13, 2001Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 13, 2001, 4:40 PM EDT for Ocean County, New Jersey. It was in force for 95 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 13, 2001, 4:40 PM EDT (20:40 UTC)
Expired: Aug 13, 2001, 6:15 PM EDT
In force: 95 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 16 km from the middle of the area, began a volume at 20:43 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 12:00Z, 8.7 hours before the alert went out and 162 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 771 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KPHI 132040
FFWPHI
FFWPHI
NJC029-132215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
440 PM EDT MON AUG 13 2001

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 615 PM EDT.

* AT 438 PM EDT...WEATHER SERVICE RADAR INDICATED RAINFALL AMOUNTS
OF 4 TO 5 INCHES. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE
YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER
DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER
GROUND.

INTENSE LIGHTNING IS ALSO OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. IF OUTDOORS...STAY AWAY
FROM ISOLATED HIGH OBJECTS SUCH AS TREES.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

$$

EBERWINE

LAT...LON 4015 7396 3992 7386 3976 7422 4001 7433

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 9:06 PM EDT	Flash Flood Warning	PHI	Middlesex	114 min
Aug 13, 3:45 PM EDT	Flash Flood Warning	PHI	Ocean	60 min
Aug 13, 3:56 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	34 min
Aug 13, 7:12 PM EDT	Flash Flood Warning	PHI	Mercer	3 hr

Nearby

Flash Flood Warnings in New Jersey, 2001 Every flash flood warning in 2001

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.