Alert archive / New Jersey / Flash Flood Warnings in 2006

Flash Flood Warning 21, NWS New York, NY

July 21, 2006Union County, New Jersey

NWS New York, NY issued this flash flood warning at Jul 21, 2006, 5:28 PM EDT for Union County, New Jersey. It was in force for 2 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 21, 2006, 5:28 PM EDT (21:28 UTC)
Expired
Jul 21, 2006, 7:30 PM EDT
In force
2 hr
Issued by
NWS New York, NY
Area
Counties, with a storm outline in the text

County Union County, NJ

The radar

The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 21:31 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

TimeReportWhereRemark
Jul 21, 5:48 PM EDTFLASH FLOODElizabeth, NJSERIOUS FLOODING THROUGHOUT TOWN. SEVERAL STREETS CLOSED. SIGNIFICANT DAMAGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.5 hours before the alert went out and 127 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2006-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2006-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
173 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KOKX 212128
FFWOKX
NJC039-212330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE UPTON NY
528 PM EDT FRI JUL 21 2006

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  UNION COUNTY IN NORTHEAST NEW JERSEY...

* UNTIL 730 PM EDT...

* AT 525 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM TRAINING SHOWERS AND THUNDERSTORMS OVER THE    
  WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO UNION...
  SUMMIT AND ELIZABETH.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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. MOVE TO HIGHER GROUND.

LAT...LON 4058 7446 4058 7420 4071 7413 4072 7443

$$

AL
1 follow-up statement
000 
WGUS71 KOKX 212332
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
730 PM EDT FRI JUL 21 2006

NJC039-212337-
UNION NJ-
730 PM EDT FRI JUL 21 2006

...THE FLASH FLOOD WARNING FOR UNION COUNTY EXPIRES AT 730 PM EDT...

HEAVY SHOWERS AND THUNDERSTORMS HAVE MOVED SOUTH OF THE 
AREA...HOWEVER MANY ROADS ARE STILL COVERED WITH STANDING 
WATER...ESPECIALLY IN THE ELIZABETH TOWNSHIP. WHILE THE SITUATION IS 
NOT EXPECTED TO WORSEN...IT WILL TAKE TIME FOR THE WATERS TO RECEDE. 
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. 

LAT...LON 4058 7446 4058 7420 4071 7413 4072 7443

$$

AL

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 21, 3:39 PM EDTSevere Thunderstorm WarningOKXBergen20 min
Jul 21, 4:18 PM EDTSevere Thunderstorm WarningOKXHudson, Union42 min
Jul 21, 4:23 PM EDTFlash Flood WarningOKXHudson97 min
Jul 21, 4:31 PM EDTFlash Flood WarningOKXUnion59 min

Nearby

Flash Flood Warnings in New Jersey, 2006Every flash flood warning in 2006

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.