Alert archive / Pennsylvania / Flash Flood Warnings in 2003
Flash Flood Warning 50, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 15, 2003, 6:33 PM EDT for Bucks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 15, 2003, 6:33 PM EDT (22:33 UTC)
- Expired
- Sep 15, 2003, 9:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Bucks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 105 km from the middle of the area, began a volume at 22:36 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, 10.6 hours before the alert went out and 138 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
- 364 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPHI 152241 FFWPHI PAC017-077-095-160130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 633 PM EDT MON SEP 15 2003 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA CENTRAL AND WESTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA NORTHWESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA * UNTIL 930 PM EDT. * AT 630 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED SEVERAL INCHES OF RAIN HAD FALLEN SO FAR ACROSS LOCALIZED AREAS. WITH MORE MODERATE TO HEAVY RAIN EXPECTED TO FALL ACROSS THE REGION THIS EVENING, A FLASH FLOOD WARNING HAS BEEN ISSUED. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE TELEVISION OUTLET. $$ LAT...LON 4081 7532 4052 7519 4037 7534 4049 7552 KRUZDLO
1 follow-up statement
000 WGUS71 KPHI 160126 FFSPHI PAC011-017-077-091-095-160200- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 916 PM EDT MON SEP 15 2003 ...THE FLASH FLOOD WARNING FOR BERKS...LEHIGH...NORTHAMPTON...BUCKS AND MONTGOMERY COUNTIES WILL EXPIRE AT 930 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE RAINFALL WAS ENDING ACROSS THE WARNED AREA...AND THE FLOOD THREAT WAS DIMINISHING. SOME MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF SERIOUS FLOODING IS ENDING. THUS...THE FLASH FLOOD WARNING IS BEING ALLOWED TO EXPIRE. SOME FLOODING CONTINUES IN POOR DRAINAGE AREAS BUT THIS WILL ALSO SUBSIDE. SOME RIVERS REMAIN OUT OF THEIR BANKS IN BERKS...MONTGOMERY AND CHESTER COUNTIES. PLEASE SEE THE RIVER FLOOD WARNINGS FOR CONTENT ABOUT FLOODING ON THE PERKIOMEN CREEK AND BRANDYWINE CREEKS. STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA FOR THE LATEST SEVERE WEATHER INFORMATION. $$ RNS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 6:07 AM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Sep 15, 8:18 AM EDT | Flash Flood Warning | PHI | Berks, Montgomery | 4 hr |
| Sep 15, 8:47 AM EDT | Flash Flood Warning | PHI | Chester | 6 hr |
| Sep 15, 12:10 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 15, 3:24 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 6 hr |
| Sep 15, 5:19 PM EDT | Flash Flood Warning | PHI | Chester | 6 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2003Every flash flood warning in 2003
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.