Alert archive / Virginia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 287

May 13, 20006 states

The Storm Prediction Center issued this severe thunderstorm watch at May 13, 2000, 2:45 PM EDT for 6 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 13, 2000, 2:45 PM EDT (18:45 UTC)
Expired: May 13, 2000, 8:00 PM EDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 49 counties

New Castle County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Caroline County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Kent County, MD, Montgomery County, MD, Prince George's County, MD, Queen Anne's County, MD, Talbot County, MD, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Adams County, PA, Chester County, PA, Delaware County, PA, Lancaster County, PA, Philadelphia County, PA, York County, PA, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Manassas, VA, City of Manassas Park, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Greene County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Orange County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Stafford County, VA, Warren County, VA, Jefferson County, WV

The radar

The Sterling radar (KLWX), 18 km from the middle of the area, began a volume at 18:47 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

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

Issued	Product	Office	Counties	Lasted
May 13, 2:55 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	50 min
May 13, 4:34 PM EDT	Severe Thunderstorm Warning	LWX	Page, Shenandoah	41 min
May 13, 4:40 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	35 min
May 13, 5:05 PM EDT	Tornado Warning	LWX	Baltimore	25 min
May 13, 5:08 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	67 min
May 13, 5:13 PM EDT	Severe Thunderstorm Warning	LWX	Harford	47 min
May 13, 5:15 PM EDT	Severe Thunderstorm Warning	LWX	Page, Rappahannock, Warren	30 min
May 13, 5:22 PM EDT	Tornado Warning	LWX	Harford	38 min
May 13, 5:31 PM EDT	Severe Thunderstorm Warning	LWX	Clarke	29 min
May 13, 5:34 PM EDT	Severe Thunderstorm Warning	LWX	Page	31 min
May 13, 5:40 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Rappahannock	30 min
May 13, 5:40 PM EDT	Severe Thunderstorm Warning	LWX	Berkeley, Jefferson	65 min
May 13, 5:41 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	49 min
May 13, 5:54 PM EDT	Severe Thunderstorm Warning	LWX	Jefferson	36 min
May 13, 5:54 PM EDT	Tornado Warning	LWX	Jefferson	36 min
May 13, 6:04 PM EDT	Severe Thunderstorm Warning	LWX	Rappahannock	31 min
May 13, 6:07 PM EDT	Severe Thunderstorm Warning	CTP	Adams	68 min
May 13, 6:07 PM EDT	Severe Thunderstorm Warning	LWX	Prince William, City of Manassas	28 min
May 13, 6:07 PM EDT	Severe Thunderstorm Warning	LWX	Fauquier	28 min
May 13, 6:16 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	29 min
May 13, 6:30 PM EDT	Severe Thunderstorm Warning	LWX	Prince William, City of Manassas, City of Manassas Park	30 min
May 13, 6:30 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, City of Fairfax	30 min
May 13, 6:34 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Rappahannock	16 min
May 13, 6:39 PM EDT	Severe Thunderstorm Warning	LWX	Carroll	66 min
May 13, 6:42 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	33 min
May 13, 6:43 PM EDT	Flash Flood Warning	AKQ	Fauquier, Rappahannock	2 hr
May 13, 6:49 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	56 min
May 13, 6:53 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper	32 min
May 13, 6:56 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Howard, City of Baltimore	34 min
May 13, 6:58 PM EDT	Severe Thunderstorm Warning	LWX	Fairfax, Prince William	32 min
May 13, 6:58 PM EDT	Severe Thunderstorm Warning	LWX	City of Fairfax	32 min
May 13, 7:13 PM EDT	Tornado Warning	CTP	York	32 min
May 13, 7:17 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	43 min
May 13, 7:25 PM EDT	Tornado Warning	CTP	Lancaster	35 min
May 13, 7:35 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, City of Baltimore	40 min
May 13, 7:35 PM EDT	Severe Thunderstorm Warning	LWX	Harford	40 min
May 13, 7:35 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Stafford	40 min
May 13, 7:47 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	43 min
May 13, 7:47 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Montgomery	43 min
May 13, 7:55 PM EDT	Flash Flood Warning	LWX	Baltimore, Harford	110 min

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.8 hours before the alert went out and 11 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: 680 J/kg
Mixed-layer CIN: -169 J/kg
Mixed-layer LCL: 1644 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: -23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.7

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 13, 6:00 PM EDT	Severe Thunderstorm Watch	SPC	Bergen, Essex, Hudson, Hunterdon, Mercer, Middlesex and 6 more	5 hr
May 13, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Bedford, Blair, Bradford, Centre, Clinton and 23 more	5 hr
May 13, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	Albemarle, Amelia, Amherst, Appomattox, Augusta, Bedford and 41 more	5 hr
May 13, 3:00 AM EDT	Severe Thunderstorm Watch	SPC	Cabell, Mason, Wood	6 hr

Nearby

Severe Thunderstorm Watches in Virginia, 2000 Severe Thunderstorm Watches in Maryland, 2000 Severe Thunderstorm Watches in Pennsylvania, 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; radar from the NEXRAD Level II archive.