Alert archive / New Jersey / Flash Flood Watches in 2013
Flash Flood Watch 8, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood watch at Aug 9, 2013, 8:03 AM EDT for 4 counties in Pennsylvania; 5 counties in New Jersey. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2013, 8:03 AM EDT (12:03 UTC)
- Expired
- Aug 9, 2013, 6:38 PM 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 12:03 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, 0.1 hours before the alert went out and 186 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
- 673 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 549 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
915 WGUS61 KPHI 091203 FFAPHI URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 803 AM EDT FRI AUG 9 2013 NJZ001-007>010-PAZ054-055-061-062-100200- /O.NEW.KPHI.FF.A.0008.130809T1203Z-130810T0200Z/ /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 803 AM EDT FRI AUG 9 2013 ...FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NEW JERSEY AND PENNSYLVANIA...INCLUDING THE FOLLOWING AREAS...IN NEW JERSEY... HUNTERDON...MORRIS...SOMERSET...SUSSEX AND WARREN. IN PENNSYLVANIA...CARBON...LEHIGH...MONROE AND NORTHAMPTON. * THROUGH THIS EVENING * HEAVY RAIN HAS FALLEN SINCE YESTERDAY AND ESPECIALLY OVERNIGHT. ADDITIONAL HEAVY RAIN IS LIKELY TODAY MAKING THIS AREA THE MOST VULNERABLE TO FLASH FLOODING INTO THIS EVENING. ADDITIONAL AMOUNTS WILL AVERAGE ONE HALF TO ONE INCH, BUT LOCALIZED AMOUNTS COULD EXCEED THREE INCHES. * OTHER AREAS IN EASTERN PENNSYLVANIA AND CENTRAL AND SOUTHERN NEW JERSEY NOT IN THE CURRENT FLASH FLOOD WATCH HAVE A LESSER CHANCE, BUT NOT A ZERO CHANCE OF EXPERIENCING FLASH FLOODING LATER TODAY. THERE WILL BE THUNDERSTORMS WITH LOCALIZED VERY HEAVY RAIN THAT WILL MOVE THROUGH THE REGION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT 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. && $$ GIGI
1 follow-up statement
638 WGUS61 KPHI 092238 FFAPHI FLOOD WATCH NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 638 PM EDT FRI AUG 9 2013 NJZ001-007>010-PAZ054-055-061-062-092345- /O.CAN.KPHI.FF.A.0008.000000T0000Z-130810T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-LEHIGH- NORTHAMPTON- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...JIM THORPE...STROUDSBURG...ALLENTOWN... BETHLEHEM...EASTON 638 PM EDT FRI AUG 9 2013 ...FLASH FLOOD WATCH IS CANCELLED... WHILE SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL REMAIN OVER OUR REGION EARLY THIS EVENING, THE THREAT OF FLASH FLOODING HAS DIMINISHED. AS A RESULT, THE FLASH FLOOD WATCH HAS BEEN CANCELLED FOR THE PENNSYLVANIA COUNTIES OF CARBON, MONROE, NORTHAMPTON AND LEHIGH, AND FOR THE NEW JERSEY COUNTIES OF SUSSEX, WARREN, MORRIS, HUNTERDON AND SOMERSET. $$ IOVINO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 6:30 AM EDT | Areal Flood Advisory | PHI | Monroe | 4 hr |
| Aug 9, 8:39 AM EDT | Flash Flood Warning | PHI | Monroe | 4 hr |
| Aug 9, 3:55 AM EDT | Small Craft Advisory | PHI | 16 hr | |
| Aug 9, 7:34 AM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
Nearby
Flash Flood Watches in New Jersey, 2013Flash Flood Watches in Pennsylvania, 2013Every flash flood watch in 2013
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.