Alert archive / Pennsylvania / Flash Flood Warnings in 2002
Flash Flood Warning 17, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 27, 2002, 6:55 PM EDT for Berks 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
- Jun 27, 2002, 6:55 PM EDT (22:55 UTC)
- Expired
- Jun 27, 2002, 10:00 PM EDT
- In force
- 3 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 22:56 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, 10.9 hours before the alert went out and 106 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
- 287 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPHI 272255 FFWPHI PAC011-280200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 653 PM EDT THU JUN 27 2002 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... BERKS COUNTY IN EASTERN PENNSYLVANIA * UNTIL 1000 PM EDT. * AT 646 PM EDT...WEATHER SERVICE RADAR INDICATED TWO TO THREE INCHES OF RAIN HAS FALLEN ACROSS THE COUNTY SO FAR. SHOWERS AND THUDNERSTORMS UPSTREAM COULD PRODUCE ADDITIONAL HEAVY RAIN DURING THE NEXT HOUR AND CAUSE FLOODING OF STREAMS IN THE COUNTY. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE TELEVISION OUTLET. $$ LAT...LON 4049 7636 4029 7608 4051 7568 4064 7590 TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 4:05 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 25 min |
| Jun 27, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 37 min |
| Jun 27, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 39 min |
| Jun 27, 6:05 PM EDT | Tornado Warning | PHI | Berks | 55 min |
| Jun 27, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 60 min |
| Jun 27, 7:13 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Montgomery | 47 min |
| Jun 27, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 31 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.