A low pressure system moved northeast from the Mid Atlantic States across Northeast New Jersey and Eastern Connecticut on the 27th.  Two bands of heavy rain occurred:  one extended northeast across Hunterdon and Passaic Counties; the other extended from Somerset northeast across Eastern Essex and Eastern Bergen Counties.  Storm total rainfall amounts in these bands ranged from 2 to 4 inches, which resulted in flash flooding across parts of the region.
Storm total rainfall amounts for:
Bergen County - ranged from 2.01 inches at Cliffside Park to 3.26 inches at Teterboro Airport.
Essex County - ranged from 2.36 inches at Newark Airport to 2.40 inches at West Orange.
Hudson County - ranged from 1.46 inches at Jersey City to 2.88 inches at Harrison.
Passaic County - 2.12 inches was measured in West Patterson.
Union County - 2.97 inches was measured in Elizabeth.
A NWS Cooperative Observer reported flash flooding of Route 46 in Lodi, where lanes in both directions were closed, at 4:15 am.
Amateur radio operators reported flash flooding of I-280 in Newark at 5:00 am.
The broadcast media reported flash flooding along portions of:
Route 46 in Wayne, where 2 lanes were closed and Highway 508 in Kearny at 6:00 am.
Route 17 in Rutherford at 9:10 am.
I-280 in Kearny at 9:11 am and in Newark at 9:24 am.
I-78 west bound at Exit 43 (Diamond Hill Road) in Berkeley Heights at 10:14 am.
Route 139 lower level west bound before Tonnelle Avenue in Jersey City at 10:18 am.
Highway 21 south bound at River Drive in Passaic at 10:50 am.

Flash Flood in HUDSON, NEW JERSEY
From 27-APR-07 08:11:00 to 27-APR-07 11:00:00 (EST-5)
Location: KEARNY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in ESSEX, NEW JERSEY
From 27-APR-07 08:24:00 to 27-APR-07 11:00:00 (EST-5)
Location: NEWARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in PASSAIC, NEW JERSEY
From 27-APR-07 05:00:00 to 27-APR-07 05:15:00 (EST-5)
Location: WAYNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in BERGEN, NEW JERSEY
From 27-APR-07 08:10:00 to 27-APR-07 11:00:00 (EST-5)
Location: RUTHERFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in ESSEX, NEW JERSEY
From 27-APR-07 04:00:00 to 27-APR-07 05:15:00 (EST-5)
Location: NEWARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Flash Flood in HUDSON, NEW JERSEY
From 27-APR-07 05:00:00 to 27-APR-07 05:15:00 (EST-5)
Location: KEARNY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in UNION, NEW JERSEY
From 27-APR-07 04:45:00 to 27-APR-07 04:45:00 (EST-5)
Location: SPRINGFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in PASSAIC, NEW JERSEY
From 27-APR-07 09:50:00 to 27-APR-07 09:50:00 (EST-5)
Location: PASSAIC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in HUDSON, NEW JERSEY
From 27-APR-07 09:18:00 to 27-APR-07 11:00:00 (EST-5)
Location: JERSEY CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in BERGEN, NEW JERSEY
From 27-APR-07 03:15:00 to 27-APR-07 05:15:00 (EST-5)
Location: LODI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Flash Flood in BERGEN, NEW JERSEY
From 27-APR-07 09:10:00 to 27-APR-07 11:00:00 (EST-5)
Location: CLIFFSIDE PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in UNION, NEW JERSEY
From 27-APR-07 09:14:00 to 27-APR-07 11:00:00 (EST-5)
Location: BERKELEY HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media