Alert archive / Pennsylvania / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 339

May 24, 20005 states

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2000, 3:00 PM EDT for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2000, 3:00 PM EDT (19:00 UTC)
Expired: May 24, 2000, 9:00 PM EDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 69 counties

Kent County, DE, New Castle County, DE, Allegany County, MD, Baltimore County, MD, Carroll County, MD, Cecil County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Kent County, MD, Washington County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Adams County, PA, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Bedford County, PA, Berks County, PA, Blair County, PA, Bucks County, PA, Butler County, PA, Cambria County, PA, Centre County, PA, Chester County, PA, Clarion County, PA, Clearfield County, PA, Cumberland County, PA, Dauphin County, PA, Delaware County, PA, Fayette County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lancaster County, PA, Lawrence County, PA, Lebanon County, PA, Lehigh County, PA, Mercer County, PA, Mifflin County, PA, Montgomery County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Philadelphia County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Union County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, York County, PA, Morgan County, WV

Warnings issued inside it

31 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 24, 3:16 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	59 min
May 24, 3:21 PM EDT	Severe Thunderstorm Warning	CTP	Union	39 min
May 24, 3:26 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Howard	49 min
May 24, 3:26 PM EDT	Severe Thunderstorm Warning	LWX	City of Baltimore	49 min
May 24, 3:39 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll	46 min
May 24, 3:53 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	57 min
May 24, 4:05 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion	65 min
May 24, 4:11 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	24 min
May 24, 4:13 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	47 min
May 24, 4:15 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	45 min
May 24, 4:22 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	48 min
May 24, 4:25 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	50 min
May 24, 4:32 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	43 min
May 24, 4:40 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	35 min
May 24, 4:57 PM EDT	Severe Thunderstorm Warning	PHI	Berks	33 min
May 24, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	26 min
May 24, 5:15 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	30 min
May 24, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Centre	60 min
May 24, 5:22 PM EDT	Severe Thunderstorm Warning	CTP	Mifflin	53 min
May 24, 5:43 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Snyder	47 min
May 24, 6:07 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland	53 min
May 24, 6:08 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex	32 min
May 24, 6:28 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon, Schuylkill	47 min
May 24, 7:15 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	15 min
May 24, 7:19 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh	26 min
May 24, 7:24 PM EDT	Severe Thunderstorm Warning	PHI	Berks	36 min
May 24, 7:44 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	46 min
May 24, 8:13 PM EDT	Severe Thunderstorm Warning	PHI	Chester	32 min
May 24, 8:32 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery	28 min
May 24, 8:42 PM EDT	Severe Thunderstorm Warning	PHI	Philadelphia	33 min
May 24, 8:55 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	35 min

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.0 hours before the alert went out and 177 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 37 J/kg
Mixed-layer CIN: -277 J/kg
Mixed-layer LCL: 1255 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 4:30 PM EDT	Severe Thunderstorm Watch	SPC	Bergen, Essex, Hudson, Hunterdon, Morris, Passaic and 4 more	6 hr
May 24, 1:15 PM EDT	Severe Thunderstorm Watch	SPC	Bradford, Clinton, Columbia, Lackawanna, Luzerne, Lycoming and 6 more	6 hr

Nearby

Severe Thunderstorm Watches in Pennsylvania, 2000 Severe Thunderstorm Watches in New Jersey, 2000 Severe Thunderstorm Watches in Maryland, 2000 Every severe thunderstorm watch in 2000

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.