Alert archive / Maryland / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 567

July 10, 20004 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 10, 2000, 4:30 PM EDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jul 10, 2000, 4:30 PM EDT (20:30 UTC)
Expired: Jul 10, 2000, 10:00 PM EDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 39 counties

Kent County, DE, New Castle County, DE, Sussex 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, Dorchester County, 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, Saint Mary's County, MD, Somerset County, MD, Talbot County, MD, Wicomico County, MD, Worcester County, MD, Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ, Salem County, NJ, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Manassas, VA, City of Manassas Park, VA, Fairfax County, VA, King George County, VA, Prince William County, VA, Stafford County, VA

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jul 10, 5:09 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Stafford	51 min
Jul 10, 5:09 PM EDT	Severe Thunderstorm Warning	LWX	Prince William, City of Manassas, City of Manassas Park	51 min
Jul 10, 5:21 PM EDT	Severe Thunderstorm Warning	LWX	City of Fredericksburg	39 min
Jul 10, 5:56 PM EDT	Severe Thunderstorm Warning	LWX	King George	49 min
Jul 10, 5:57 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	48 min
Jul 10, 6:02 PM EDT	Severe Thunderstorm Warning	LWX	Spotsylvania, Stafford, City of Fredericksburg	28 min
Jul 10, 6:20 PM EDT	Severe Thunderstorm Warning	LWX	Calvert, Saint Mary's	40 min

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.5 hours before the alert went out and 105 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: 56 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 1575 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 182 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
Jul 10, 12:30 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Garrett, Washington	6 hr
Jul 10, 2:45 PM EDT	Severe Thunderstorm Watch	SPC	Albemarle, Alleghany, Amherst, Appomattox, Augusta, Bath and 18 more	5 hr

Nearby

Severe Thunderstorm Watches in Maryland, 2000 Severe Thunderstorm Watches in Virginia, 2000 Severe Thunderstorm Watches in New Jersey, 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.