Alert archive / Pennsylvania / Flash Flood Warnings in 2004
Flash Flood Warning 74, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 12, 2004, 7:47 PM EDT for Berks County, Carbon 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 outline as issued.
The facts
- Issued
- Aug 12, 2004, 7:47 PM EDT (23:47 UTC)
- Expired
- Aug 12, 2004, 10:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Berks County, PA, Carbon County, PA
The radar
The Philadelphia radar (KDIX), 158 km from the middle of the area, began a volume at 23:50 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, 11.8 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
- 731 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 130000
FFWPHI
PAC011-025-130245-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
747 PM EDT THU AUG 12 2004
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BERKS COUNTY IN EASTERN PENNSYLVANIA
CARBON COUNTY IN NORTHEAST PENNSYLVANIA
* UNTIL 1045 PM EDT
* AT 730 PM EDT...RADAR ESTIMATED RAINFALL AMOUNTS HAVE EXCEEDED
4.0 INCHES IN PORTIONS OF WESTERN BERKS COUNTY. ANOTHER 1 TO 2
INCHES OF RAINFALL IS POSSIBLE DURING THE NEXT SEVERAL HOURS.
FLOODING IS EXPECTED, BUT NOT LIMITED TO, LOCALES NEAR THE LITTLE
SWATARA AND STONE CREEKS. IN CARBON COUNTY, RADAR ESTIMATED
RAINFALL AMOUNTS HAVE EXCEEDED 2.5 INCHES IN PORTIONS OF WESTERN
CARBON COUNTY. ANOTHER 2 TO 3 INCHES OF RAINFALL IS POSSIBLE
DURING THE NEXT SEVERAL HOURS. FLOODING IS EXPECTED, BUT NOT
LIMITED TO, LOCALES NEAR THE NESQUEHONING AND WETZEL CREEKS.
FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.
LAT...LON 4091 7575 4091 7575 4079 7583 4082 7591
4066 7592 4035 7614 4048 7636 4051 7635
4053 7618 4059 7607 4058 7602 4064 7600
4067 7592 4084 7591 4091 7599 4095 7590
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:21 PM EDT | Special Marine Warning | PHI | 54 min | |
| Aug 12, 5:15 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Aug 12, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 63 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2004Every flash flood warning in 2004
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.