Alert archive / Pennsylvania / Areal Flood Advisories in 2009
Areal Flood Advisory 27, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jul 2, 2009, 1:34 AM EDT for Carbon County, Pennsylvania. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 2, 2009, 1:34 AM EDT (05:34 UTC)
- Expired
- Jul 2, 2009, 4:30 AM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Carbon County, PA
The radar
The Binghamton radar (KBGM), 144 km from the middle of the area, began a volume at 05:37 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 00:00Z, 5.6 hours before the alert went out and 239 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
- 108 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 752 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at Jul 1, 9:22 PM EDT, 4 hours 12 minutes earlier.
Area forecast discussion, Jul 1, 9:22 PM EDT, 4 hours 12 minutes before
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</html>Hazardous weather outlook, Jul 1, 9:05 PM EDT, 4 hours 29 minutes before
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Special weather statement, Jul 1, 8:51 PM EDT, 4 hours 43 minutes before
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</html>Special weather statement, Jul 1, 9:01 PM EDT, 4 hours 33 minutes before
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</html>Special weather statement, Jul 1, 10:17 PM EDT, 3 hours 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1017 PM EDT WED JUL 1 2009 NJZ007-009-PAZ054-055-060>062-068-069-020415- BERKS PA-BUCKS PA-CARBON PA-HUNTERDON NJ-LEHIGH PA-MONROE PA- MONTGOMERY PA-NORTHAMPTON PA-WARREN NJ- 1017 PM EDT WED JUL 1 2009 ...STRONG THUNDERSTORMS WILL AFFECT BERKS...BUCKS...CARBON... HUNTERDON...LEHIGH...MONROE...MONTGOMERY...NORTHAMPTON AND WARREN COUNTIES... AT 1015 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING ALONG A LINE EXTENDING FROM 20 MILES NORTHWEST OF TRENTON TO 14 MILES EAST OF READING...MOVING NORTH AT 10 TO 15 MPH. THE THUNDERSTORMS WILL BE NEAR LUMBERVILLE...RED HILL AROUND 1030 PM...BYRAM...STOCKTON AROUND 1045 PM...TINICUM...OTTSVILLE AROUND 1100 PM...ERWINNA...RICHLANDTOWN AROUND 1115 PM...FRENCHTOWN AND ZIONSVILLE AROUND 1130 PM. THESE STORMS IF THEY MAINTAIN THEMSELVES WOULD REACH THE POCONOS AND WARREN COUNTY ABOUT MIDNIGHT. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING FROM THESE STORMS. TFG
Special weather statement, Jul 1, 10:30 PM EDT, 3 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1030 PM EDT WED JUL 1 2009 DEZ001>004-MDZ008-012-015-020-NJZ016>018-021>025-PAZ067-070-071- 020430- ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAMDEN NJ-CAPE MAY NJ- CAROLINE MD-CECIL MD-CHESTER PA-COASTAL ATLANTIC NJ-CUMBERLAND NJ- DELAWARE PA-DELAWARE BEACHES DE-GLOUCESTER NJ-INLAND SUSSEX DE- KENT MD-KENT DE-NEW CASTLE DE-PHILADELPHIA PA-QUEEN ANNES MD- SALEM NJ- 1030 PM EDT WED JUL 1 2009 ...STRONG THUNDERSTORMS WILL AFFECT ATLANTIC...CAMDEN...CAPE MAY... CAROLINE...CECIL...CHESTER...CUMBERLAND...DELAWARE...GLOUCESTER... KENT...NEW CASTLE...PHILADELPHIA...QUEEN ANNES...SALEM AND SUSSEX COUNTIES... AT 1029 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF SHOWERS AND SCATTERED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 17 MILES SOUTHEAST OF LANCASTER TO 22 MILES WEST OF MIDDLETOWN TO 20 MILES NORTHEAST OF EASTON TO 23 MILES SOUTH OF SALISBURY...MOVING EAST AT 25 MPH. THE THUNDERSTORMS WILL BE NEAR ATGLEN...PARKESBURG AROUND 1045 PM...MODENA...SOUTH COATESVILLE AROUND 1100 PM...MARSHALLTON...DOWNINGTOWN AROUND 1115 PM...WEST CHESTER...WEST GOSHEN AROUND 1130 PM...NEWTOWN SQUARE AND DEVON-BERWYN AROUND 1145 PM. VERY HEAVY RAIN WILL FALL WITH THE STRONGEST STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO AROUND 35 MPH ARE POSSIBLE WITH THE STRONGEST STORMS IN THIS AREA. EXPECT SMALL HAIL AND DANGEROUS CLOUD TO GROUND LIGHTNING FROM THESE STORMS. TFG
Special weather statement, Jul 2, 12:11 AM EDT, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1211 AM EDT THU JUL 2 2009 NJZ007-009-010-015-PAZ054-055-060>062-067>069-020545- BERKS PA-BUCKS PA-CARBON PA-CHESTER PA-HUNTERDON NJ-LEHIGH PA- MERCER NJ-MONROE PA-MONTGOMERY PA-NORTHAMPTON PA-SOMERSET NJ- WARREN NJ- 1211 AM EDT THU JUL 2 2009 ...STRONG THUNDERSTORMS WILL AFFECT BERKS...BUCKS...CARBON... CHESTER...HUNTERDON...LEHIGH...MERCER...MONROE... MONTGOMERY...NORTHAMPTON...SOMERSET AND WARREN COUNTIES... AT 1210 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES WEST OF ALLENTOWN...MOVING NORTHEAST AT 15 MPH. THE THUNDERSTORM WILL BE NEAR CLAUSSVILLE...ALLENTOWN AROUND 1215 AM...COFFEETOWN...COPLAY AROUND 1230 AM...NORTHAMPTON...NORTH CATASAUQUA AROUND 1245 AM...BEERSVILLE...CHAPMAN AROUND 100 AM... BELFAST AND EASTLAWN GARDENS AROUND 115 AM. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH AND SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING FROM THESE STORMS. NIERENBERG
Special weather statement, Jul 2, 12:20 AM EDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1220 AM EDT THU JUL 2 2009 DEZ001-NJZ013>027-PAZ068>071-020545- ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-BUCKS PA-CAMDEN NJ- CAPE MAY NJ-COASTAL ATLANTIC NJ-COASTAL OCEAN NJ-CUMBERLAND NJ- DELAWARE PA-EASTERN MONMOUTH NJ-GLOUCESTER NJ-MERCER NJ-MONTGOMERY PA- NEW CASTLE DE-NORTHWESTERN BURLINGTON NJ-OCEAN NJ-PHILADELPHIA PA- SALEM NJ-SOUTHEASTERN BURLINGTON NJ-WESTERN MONMOUTH NJ- 1220 AM EDT THU JUL 2 2009 ...STRONG THUNDERSTORMS WILL AFFECT ATLANTIC...BUCKS...BURLINGTON... CAMDEN...CAPE MAY...CUMBERLAND...DELAWARE...GLOUCESTER...MERCER... MONMOUTH...MONTGOMERY...NEW CASTLE...OCEAN...PHILADELPHIA AND SALEM COUNTIES... AT 1214 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF SCATTERED STRONG THUNDERSTORMS FROM NEAR ODESSA TO NEAR MILLVILLE...MOVING NORTHEAST AT 15 MPH. THESE THUNDERSTORMS WILL BE NEAR DELAWARE CITY...BEAR AROUND 1230 AM...NEW CASTLE... WILMINGTON MANOR AROUND 1245 AM...PENNSVILLE...WILMINGTON AROUND 100 AM...PENNS GROVE...CARNEYS POINT AROUND 115 AM...TRAINER AND MARCUS HOOK AROUND 130 AM. PLACES FURTHER NORTHEAST MAY BE AFFECTED AFTER 130 AM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH...SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING ARE POSSIBLE WITH THE STRONGER STORMS. NIERENBERG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 3:38 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris | 3 hr |
| Jul 2, 4:50 AM EDT | Areal Flood Advisory | PHI | Morris | 3 hr |
| Jul 2, 7:01 AM EDT | Areal Flood Warning | PHI | Hunterdon, Somerset | 3 hr |
| Jul 2, 10:47 AM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 2 hr |
| Jul 1, 10:51 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Jul 1, 11:55 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Lehigh, Montgomery | 3 hr |
Nearby
Areal Flood Advisories in Pennsylvania, 2009Every areal flood advisory in 2009
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.