Flash Flood Watch 7, NWS Philadelphia/Mount Holly

Issued

Aug 2, 2009, 2:19 AM EDT (06:19 UTC)

In effect from

Aug 2, 2009, 3:00 AM EDT

Expired

Aug 2, 2009, 3:11 PM EDT

In force

12 hr

Issued by

NWS Philadelphia/Mount Holly

Flood severity

None

Counties New Castle County, DE, Cecil County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA, Philadelphia County, PA

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 06:21 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.

000 
WGUS61 KPHI 020619
FFAPHI

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
219 AM EDT SUN AUG 2 2009

DEZ001-MDZ008-NJZ001-007>010-012-013-015-017>019-PAZ054-055-
060>062-067>071-021900-
/O.NEW.KPHI.FF.A.0007.090802T0700Z-090803T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-
MIDDLESEX-WESTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEWTON...
WASHINGTON...MORRISTOWN...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...TRENTON...GLASSBORO...CAMDEN...
CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON...
WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
219 AM EDT SUN AUG 2 2009

...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE...
 NORTHEAST MARYLAND...NEW JERSEY AND PENNSYLVANIA...INCLUDING 
 THE FOLLOWING AREAS...IN NORTHERN DELAWARE...NEW CASTLE. IN 
 NORTHEAST MARYLAND...CECIL. IN NEW JERSEY...CAMDEN...
 GLOUCESTER...HUNTERDON...MERCER...MIDDLESEX...MORRIS...
 NORTHWESTERN BURLINGTON...SOMERSET...SUSSEX...WARREN AND 
 WESTERN MONMOUTH. IN PENNSYLVANIA...BERKS...BUCKS...CARBON...
 CHESTER...DELAWARE...LEHIGH...MONROE...MONTGOMERY...
 NORTHAMPTON AND PHILADELPHIA.

* THROUGH THIS EVENING

* WIDESPREAD SHOWERS AND THUNDERSTORMS ARE FORECAST TO DEVELOP
  TODAY INTO TONIGHT. A WARM FRONT WILL MOVE NORTH THROUGH THE
  AREA TODAY AND THEN BE FOLLOWED BY A COLD FRONT THIS EVENING.
  THE FRONTS WILL INTERACT WITH A HUMID AND UNSTABLE AIRMASS AND
  CAUSE AREAS OF STRONG THUNDERSTORMS, SOME OF WHICH MAY PRODUCE
  HEAVY RAIN AND GUSTY WINDS. SCATTERED SHOWERS AND THUNDERSTORMS
  WILL AFFECT AREAS MAINLY NORTH AND WEST OF PHILADELPHIA EARLY
  THIS MORNING. THE SHOWERS AND THUNDERSTORMS WILL BECOME MORE
  WIDESPREAD LATE THIS MORNING AND CONTINUE INTO THIS AFTERNOON
  AND THIS EVENING. THE GROUND REMAINS WET IN MANY LOCATIONS AS A
  RESULT OF THE HEAVY RAINS THAT OCCURRED LAST WEEK. ONE TO TWO
  INCHES OF RAIN ARE EXPECTED...WITH LOCALIZED AMOUNTS UP TO FOUR
  INCHES. RAINFALL RATES COULD EXCEED 2 INCHES IN AN HOURS TIME.
  MOTORISTS WILL NEED TO USE CAUTION AS ROAD AND HIGHWAY FLOODING
  MAY CAUSE TRAVEL DISRUPTIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT DEVELOPING WEATHER CONDITIONS MAY
LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS
SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

RNS

000 
WGUS61 KPHI 021911
FFAPHI

FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
311 PM EDT SUN AUG 2 2009

 

DEZ001-MDZ008-NJZ001-007>010-012-013-015-017>019-PAZ054-055-
060>062-067>071-022015-
/O.CAN.KPHI.FF.A.0007.000000T0000Z-090803T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-
MIDDLESEX-WESTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...NEWTON...
WASHINGTON...MORRISTOWN...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...TRENTON...GLASSBORO...CAMDEN...
CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON...
WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
311 PM EDT SUN AUG 2 2009

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN DELAWARE...
NORTHEAST MARYLAND...NEW JERSEY AND PENNSYLVANIA HAS BEEN
CANCELLED. NO ADDITIONAL ORGANIZED HEAVY RAIN IS EXPECTED.
MULTIPLE FLASH FLOOD AND FLOOD WARNINGS ARE CURRENTLY IN EFFECT.
PLEASE FOLLOW THE DIRECTION OF EMERGENCY RESPONDERS IN YOUR AREA
IF THERE IS ONGOING FLOODING. NEVER DRIVE AROUND BARRICADES.

$$

TFG

Flash Flood Watches in New Jersey, 2009Flash Flood Watches in Pennsylvania, 2009Flash Flood Watches in Delaware, 2009Every flash flood watch in 2009

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.