Alert archive / Pennsylvania / Flash Flood Warnings in 2002
Flash Flood Warning 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at May 13, 2002, 9:14 PM EDT for Berks County, Pennsylvania. It was in force for 2 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
- May 13, 2002, 9:14 PM EDT (01:14 UTC)
- Expired
- May 13, 2002, 11:15 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 139 km from the middle of the area, began a volume at 01:16 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.2 hours before the alert went out and 206 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
- 347 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPHI 140114 FFWPHI PAC011-140315- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 913 PM EDT MON MAY 13 2002 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA * UNTIL 1115 PM EDT. * AT 910 PM EDT...WEATHER SERVICE RADAR INDICATED..MORE THUNDERSTORMS HEADING INTO SOUTHEASTERN BERKS COUNTY. THIS IS THE SAME LOCATION THAT HAS RECEIVED ABOUT A RADAR ESTIMATED 4 INCHES OF RAIN TODAY. WHILE THE STORMS WILL BE MOVING THROUGH WITHIN THE HOUR. THEY COULD DROP AN ADDITIONAL ONE TO TWO INCHES ON ALREADY SATURATED GROUNDS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE TELEVISION OUTLET. $$ LAT...LON 4039 7557 4017 7583 4028 7607 4051 7573 TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 8:08 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 52 min |
| May 14, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 34 min |
| May 14, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 27 min |
| May 14, 6:15 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 30 min |
| May 14, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 30 min |
| May 14, 6:38 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 22 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2002Every flash flood warning in 2002
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.