Alert archive / Pennsylvania / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 523
The Storm Prediction Center issued this severe thunderstorm watch at Jul 23, 2002, 12:15 PM EDT for 15 counties in New Jersey; 10 counties in New York; 35 counties in Pennsylvania. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2002, 12:15 PM EDT (16:15 UTC)
- Expired
- Jul 23, 2002, 7:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 60 counties
Bergen County, NJ, Burlington County, NJ, Camden County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Westchester County, NY, Adams County, PA, Bedford County, PA, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Delaware County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Mifflin County, PA, Monroe County, PA, Montgomery County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Philadelphia County, PA, Pike County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Union County, PA, Wayne County, PA, Wyoming County, PA, York County, PA
The radar
The State College radar (KCCX), 147 km from the middle of the area, began a volume at 16:16 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.
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 1:17 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 58 min |
| Jul 23, 1:50 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 55 min |
| Jul 23, 2:22 PM EDT | Severe Thunderstorm Warning | CTP | Union | 23 min |
| Jul 23, 3:27 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 3 hr |
| Jul 23, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 33 min |
| Jul 23, 3:28 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 3 hr |
| Jul 23, 3:36 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 39 min |
| Jul 23, 3:36 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 54 min |
| Jul 23, 3:42 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 63 min |
| Jul 23, 3:59 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 61 min |
| Jul 23, 4:04 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 56 min |
| Jul 23, 4:05 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 55 min |
| Jul 23, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 66 min |
| Jul 23, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 52 min |
| Jul 23, 4:41 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Rockland | 34 min |
| Jul 23, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 44 min |
| Jul 23, 5:07 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 38 min |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.3 hours before the alert went out and 119 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
- 249 J/kg
- Mixed-layer CIN
- -185 J/kg
- Mixed-layer LCL
- 1419 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 11:55 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
Nearby
Severe Thunderstorm Watches in Pennsylvania, 2002Severe Thunderstorm Watches in New Jersey, 2002Severe Thunderstorm Watches in New York, 2002Every severe thunderstorm watch 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.