Alert archive / Pennsylvania / Flash Flood Warnings in 2006
Flash Flood Warning 74, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Nov 16, 2006, 5:00 PM EST for Chester County, Pennsylvania; Cecil County, Maryland. 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
- Nov 16, 2006, 5:00 PM EST (22:00 UTC)
- Expired
- Nov 16, 2006, 8:00 PM EST
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Cecil County, MD, Chester County, PA
The radar
The Dover AFB radar (KDOX), 118 km from the middle of the area, began a volume at 22:00 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 12:00Z, 10.0 hours before the alert went out and 161 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
- 6 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 610 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 471 m²/s²
- 0-3 km storm-relative helicity
- 481 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPHI 162201 FFWPHI MDC015-PAC029-170100- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 500 PM EST THU NOV 16 2006 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN CECIL COUNTY IN NORTHEAST MARYLAND... CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA... * UNTIL 800 PM EST * AT 459 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAINS FROM THUNDERSTORMS OVER THE WARNED AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PARKESBURG...LIONVILLE...KENNETT SQUARE...HONEY BROOK... DOWNINGTOWN...COATESVILLE AND WEST GROVE DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. LAT...LON 3962 7613 3962 7582 4016 7556 4010 7592 $$ WN
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 16, 3:32 PM EST | Wind Advisory | PHI | Delaware, Philadelphia | 3 hr |
| Nov 16, 4:44 PM EST | Flash Flood Warning | PHI | Berks | 3 hr |
| Nov 16, 5:03 PM EST | Flash Flood Warning | PHI | Carbon, Monroe | 3 hr |
| Nov 16, 5:24 PM EST | Flash Flood Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 3 hr |
| Nov 16, 5:12 PM EST | Coastal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 11 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2006Flash Flood Warnings in Maryland, 2006Every flash flood warning in 2006
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.