Alert archive / New Jersey / Flash Flood Watches in 2007
Flash Flood Watch 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Aug 9, 2007, 4:21 PM EDT for 5 counties in New Jersey; 4 counties in Pennsylvania. It took effect at Aug 10, 2007, 12:00 AM EDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2007, 4:21 PM EDT (20:21 UTC)
- In effect from
- Aug 10, 2007, 12:00 AM EDT
- Expired
- Aug 10, 2007, 10:48 AM EDT
- In force
- 11 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- None
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 20:22 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.4 hours before the alert went out and 173 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
- 30 J/kg
- Mixed-layer CIN
- -330 J/kg
- Mixed-layer LCL
- 1529 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS61 KPHI 092021 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 421 PM EDT THU AUG 9 2007 NJZ001-007>010-PAZ054-055-061-062-100400- /O.NEW.KPHI.FF.A.0001.070810T0400Z-070810T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-LEHIGH- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 421 PM EDT THU AUG 9 2007 ...FLASH FLOOD WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH FRIDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLASH FLOOD WATCH FOR THE PENNSYLVANIA COUNTIES OF CARBON, MONROE, NORTHAMPTON AND LEHIGH, AND FOR THE NEW JERSEY COUNTIES OF SUSSEX, WARREN, MORRIS, HUNTERDON AND SOMERSET. * FROM MIDNIGHT EDT TONIGHT THROUGH FRIDAY AFTERNOON * SHOWERS AND THUNDERSTORMS WERE CONTINUING TO DEVELOP OVER THE EASTERN GREAT LAKES AND THE UPPER OHIO RIVER VALLEY THIS AFTERNOON. THE SHOWERS AND THUNDERSTORMS WILL MOVE TO THE EAST AND THEY SHOULD AFFECT EASTERN PENNSYLVANIA AND NORTHERN NEW JERSEY FROM TONIGHT INTO FRIDAY MORNING. RAINFALL AMOUNTS OF A HALF INCH TO AN INCH WILL BE COMMON. HOWEVER, LOCALIZED AMOUNTS OF ONE TO THREE INCHES ARE EXPECTED IN THE HEAVIEST THUNDERSTORMS. RIVERS AND STREAMS IN THE REGION CONTINUE TO RUN HIGH AS A RESULT OF WEDNESDAY MORNINGS HEAVY RAIN. ANY ADDITIONAL HEAVY RAIN THAT FALLS TONIGHT OR ON FRIDAY MORNING WILL LIKELY RESULT IN FLOODING IN AREAS OF POOR DRAINAGE, AS WELL AS ALONG SOME STREAMS AND CREEKS. IF YOU LIVE IN A LOCATION THAT IS PRONE TO FLOODING, PAY SPECIAL ATTENTION TO UPDATED FORECASTS AND WEATHER STATEMENT THAT ARE ISSUED TONIGHT AND ON FRIDAY MORNING. THE HEAVY RAIN MAY AFFECT FRIDAY MORNINGS COMMUTE. DO NOT DRIVE THROUGH FLOOD WATERS, THE WATER MAY BE DEEPER THAN YOU THINK IT IS. ONE WAY TO KEEP INFORMED OF EXISTING AND FORECAST CONDITIONS ON WATERWAYS THROUGHOUT THE REGION IS TO MONITOR THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ AVAILABLE ON OUR HOMEPAGE AT WWW.WEATHER.GOV/PHI. JUST CLICK THE AHPS ICON ON THE LEFT HAND MENU. $$ IOVINO
4 follow-up statements
000 WGUS61 KPHI 100120 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 920 PM EDT THU AUG 9 2007 NJZ001-007>010-PAZ054-055-061-062-101000- /O.CON.KPHI.FF.A.0001.070810T0400Z-070810T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-LEHIGH- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 920 PM EDT THU AUG 9 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... THE FLASH FLOOD WATCH CONTINUES FOR * THE PENNSYLVANIA COUNTIES OF CARBON, MONROE, NORTHAMPTON AND LEHIGH, AND FOR THE NEW JERSEY COUNTIES OF SUSSEX, WARREN, MORRIS, HUNTERDON AND SOMERSET. * FROM MIDNIGHT EDT TONIGHT THROUGH FRIDAY AFTERNOON * SHOWERS AND THUNDERSTORMS WERE CONTINUING TO APPROACH FROM THE WEST THIS EVENING. THE SHOWERS AND THUNDERSTORMS WILL AFFECT EASTERN PENNSYLVANIA AND NORTHERN NEW JERSEY OVERNIGHT INTO FRIDAY MORNING. RAINFALL AMOUNTS OF A HALF INCH TO AN INCH WILL BE COMMON. HOWEVER, LOCALIZED AMOUNTS OF ONE TO THREE INCHES ARE EXPECTED IN THE HEAVIEST THUNDERSTORMS. RIVERS AND STREAMS IN THE REGION CONTINUE TO RUN HIGH AS A RESULT OF WEDNESDAY MORNINGS HEAVY RAIN. ANY ADDITIONAL HEAVY RAIN THAT FALLS TONIGHT OR ON FRIDAY MORNING WILL LIKELY RESULT IN FLOODING IN AREAS OF POOR DRAINAGE, AS WELL AS ALONG SOME STREAMS AND CREEKS. IF YOU LIVE IN A LOCATION THAT IS PRONE TO FLOODING, PAY SPECIAL ATTENTION TO UPDATED FORECASTS AND WEATHER STATEMENT THAT ARE ISSUED OVERNIGHT AND ON FRIDAY MORNING. THE HEAVY RAIN MAY AFFECT FRIDAY MORNINGS COMMUTE. DO NOT DRIVE THROUGH FLOOD WATERS, THE WATER MAY BE DEEPER THAN YOU THINK IT IS. ONE WAY TO KEEP INFORMED OF EXISTING AND FORECAST CONDITIONS ON WATERWAYS THROUGHOUT THE REGION IS TO MONITOR THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ AVAILABLE ON OUR HOMEPAGE AT WWW.WEATHER.GOV/PHI. JUST CLICK THE AHPS ICON ON THE LEFT HAND MENU. $$ IOVINO
000 WGUS61 KPHI 100752 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 352 AM EDT FRI AUG 10 2007 NJZ001-007>010-PAZ054-055-061-062-101800- /O.CON.KPHI.FF.A.0001.000000T0000Z-070810T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-LEHIGH- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 352 AM EDT FRI AUG 10 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN NEW JERSEY...HUNTERDON... MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA... CARBON...LEHIGH...MONROE AND NORTHAMPTON. * UNTIL 2 PM EDT THIS AFTERNOON * SHOWERS CONTINUE ACROSS THE AREA EARLY THIS MORNING AND THERE IS THE POSSIBILITY OF LOCALLY HEAVY RAINS DEVELOPING OVER THE WATCH AREA LATER THIS MORNING AND INTO THE EARLY AFTERNOON. THESE RAINS WILL EASTERN PENNSYLVANIA AND NORTHERN NEW JERSEY THROUGH THE EARLY AFTERNOON. RAINFALL AMOUNTS OF A HALF INCH TO AN INCH WILL BE COMMON. HOWEVER... LOCALIZED AMOUNTS OF ONE TO THREE INCHES ARE EXPECTED DURING A FEW OF THE SCATTERED THUNDERSTORMS. RIVERS AND STREAMS IN THE REGION CONTINUE TO RUN HIGH AS A RESULT OF WEDNESDAY MORNINGS HEAVY RAIN. ANY ADDITIONAL HEAVY RAIN THAT FALLS TODAY WILL LIKELY RESULT IN FLOODING IN AREAS OF POOR DRAINAGE... AS WELL AS ALONG SOME STREAMS AND CREEKS. IF YOU LIVE IN A LOCATION THAT IS PRONE TO FLOODING... PAY SPECIAL ATTENTION TO UPDATED FORECASTS AND WEATHER STATEMENT THAT ARE ISSUED OVERNIGHT AND ON FRIDAY MORNING. THE HEAVY RAIN MAY AFFECT THIS MORNINGS COMMUTE. DO NOT DRIVE THROUGH FLOOD WATERS... THE WATER MAY BE DEEPER THAN YOU THINK IT IS. ONE WAY TO KEEP INFORMED OF EXISTING AND FORECAST CONDITIONS ON WATERWAYS THROUGHOUT THE REGION IS TO MONITOR THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ AVAILABLE ON OUR HOMEPAGE AT WWW.WEATHER.GOV/PHI. JUST CLICK THE AHPS ICON ON THE LEFT HAND MENU. $$
000 WGUS61 KPHI 100802 CCA FFAPHI FLOOD WATCH...CORRECTED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 401 AM EDT FRI AUG 10 2007 NJZ001-007>010-PAZ054-055-061-062-101800- /O.COR.KPHI.FF.A.0001.000000T0000Z-070810T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-LEHIGH- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 401 AM EDT FRI AUG 10 2007 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHERN NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NORTHERN NEW JERSEY...HUNTERDON... MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA... CARBON...LEHIGH...MONROE AND NORTHAMPTON. * UNTIL 2 PM EDT THIS AFTERNOON * SHOWERS CONTINUE ACROSS THE AREA EARLY THIS MORNING AND THERE IS THE POSSIBILITY OF LOCALLY HEAVY RAINS DEVELOPING OVER THE WATCH AREA LATER THIS MORNING AND INTO THE EARLY AFTERNOON. THESE RAINS WILL AFFECT EASTERN PENNSYLVANIA AND NORTHERN NEW JERSEY THROUGH THE EARLY AFTERNOON. RAINFALL AMOUNTS OF A HALF INCH TO AN INCH WILL BE COMMON. HOWEVER... LOCALIZED AMOUNTS OF ONE TO THREE INCHES ARE EXPECTED DURING A FEW OF THE SCATTERED THUNDERSTORMS. RIVERS AND STREAMS IN THE REGION CONTINUE TO RUN HIGH AS A RESULT OF WEDNESDAY MORNINGS HEAVY RAIN. ANY ADDITIONAL HEAVY RAIN THAT FALLS TODAY WILL LIKELY RESULT IN FLOODING IN AREAS OF POOR DRAINAGE... AS WELL AS ALONG SOME STREAMS AND CREEKS. IF YOU LIVE IN A LOCATION THAT IS PRONE TO FLOODING... PAY SPECIAL ATTENTION TO UPDATED FORECASTS AND WEATHER STATEMENT THAT ARE ISSUED OVERNIGHT AND ON FRIDAY MORNING. THE HEAVY RAIN MAY AFFECT THIS MORNINGS COMMUTE. DO NOT DRIVE THROUGH FLOOD WATERS... THE WATER MAY BE DEEPER THAN YOU THINK IT IS. ONE WAY TO KEEP INFORMED OF EXISTING AND FORECAST CONDITIONS ON WATERWAYS THROUGHOUT THE REGION IS TO MONITOR THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ AVAILABLE ON OUR HOMEPAGE AT WWW.WEATHER.GOV/PHI. JUST CLICK THE AHPS ICON ON THE LEFT HAND MENU. $$
000 WGUS61 KPHI 101448 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1048 AM EDT FRI AUG 10 2007 NJZ001-007>010-PAZ054-055-061-062-101600- /O.CAN.KPHI.FF.A.0001.000000T0000Z-070810T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-LEHIGH- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 1048 AM EDT FRI AUG 10 2007 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF NORTHERN NEW JERSEY AND PENNSYLVANIA HAS BEEN CANCELLED. THE MODERATE TO HEAVY RAIN THAT FELL EARLIER THIS MORNING, ESPECIALLY ACROSS PORTIONS OF NORTHERN NEW JERSEY HAS ENDED. WHILE RAINFALL TOTALS OF A HALF AN INCH TO ONE INCH WERE COMMON, TOTALS APPROACHED TWO AND A HALF INCHES ACROSS MORRIS COUNTY. DUE TO THE HEAVY RAIN IN A SHORT PERIOD OF TIME, FLOOD WARNINGS WERE ISSUED EARLIER THIS MORNING FOR MORRIS AND SOMERSET COUNTIES IN NEW JERSEY. THE WARNINGS ARE STILL IN EFFECT, BUT WILL BE ALLOWED TO EXPIRE AT 1100 AM. WITH NO NEW FLOODING EXPECTED THIS MORNING, THE FLASH FLOOD WATCH HAS BEEN CANCELLED. $$
Nearby
Flash Flood Watches in New Jersey, 2007Flash Flood Watches in Pennsylvania, 2007Every flash flood watch in 2007
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.