Alert archive / Virginia / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 193
The Storm Prediction Center issued this severe thunderstorm watch at Apr 21, 2000, 4:00 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 21, 2000, 4:00 PM EDT (20:00 UTC)
- Expired
- Apr 21, 2000, 10:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 58 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Calvert County, MD, Caroline County, MD, Dorchester 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, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ, Accomack County, VA, Brunswick County, VA, Charles City County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Williamsburg, VA, Dinwiddie County, VA, Essex County, VA, Gloucester County, VA, Greensville County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Mathews County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 4:04 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 41 min |
| Apr 21, 4:10 PM EDT | Severe Thunderstorm Warning | AKQ | New Kent | 30 min |
| Apr 21, 4:35 PM EDT | Severe Thunderstorm Warning | AKQ | Northumberland, Westmoreland | 30 min |
| Apr 21, 5:23 PM EDT | Severe Thunderstorm Warning | AKQ | Lancaster, Northumberland | 32 min |
| Apr 21, 5:32 PM EDT | Severe Thunderstorm Warning | AKQ | Accomack | 28 min |
| Apr 21, 5:52 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 33 min |
| Apr 21, 6:19 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 31 min |
| Apr 21, 6:57 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 28 min |
| Apr 21, 7:11 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico | 29 min |
| Apr 21, 7:13 PM EDT | Severe Thunderstorm Warning | AKQ | Northampton | 47 min |
| Apr 21, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 30 min |
| Apr 21, 7:26 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 44 min |
| Apr 21, 7:48 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 27 min |
| Apr 21, 8:12 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 33 min |
| Apr 21, 8:45 PM EDT | Severe Thunderstorm Warning | AKQ | City of Chesapeake, City of Virginia Beach | 30 min |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.0 hours before the alert went out and 84 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 681 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 287 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 21, 12:00 PM EDT | Severe Thunderstorm Watch | SPC | New Castle | 5 hr |
Nearby
Severe Thunderstorm Watches in Virginia, 2000Severe Thunderstorm Watches in Maryland, 2000Severe Thunderstorm Watches in New Jersey, 2000Every 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.