Alert archive / Virginia / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 667
The Storm Prediction Center issued this severe thunderstorm watch at Jul 28, 1997, 4:45 PM EDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 28, 1997, 4:45 PM EDT (20:45 UTC)
- Expired
- Jul 28, 1997, 10:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 89 counties
Kent County, DE, New Castle County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Caroline County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Dorchester 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, Talbot County, MD, Wicomico County, MD, Albemarle County, VA, Alleghany County, VA, Arlington County, VA, Augusta County, VA, Bath County, VA, Caroline County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Covington, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Manassas, VA, City of Manassas Park, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, King George County, VA, Loudoun County, VA, Louisa County, VA, Madison County, VA, Orange County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Westmoreland County, VA, Barbour County, WV, Boone County, WV, Braxton County, WV, Calhoun County, WV, Clay County, WV, Fayette County, WV, Gilmer County, WV, Grant County, WV, Greenbrier County, WV, Hampshire County, WV, Hardy County, WV, Jackson County, WV, Jefferson County, WV, Kanawha County, WV, Lewis County, WV, Logan County, WV, Nicholas County, WV, Pendleton County, WV, Pocahontas County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Roane County, WV, Summers County, WV, Tucker County, WV, Upshur County, WV, Webster County, WV, Wirt County, WV, Wyoming County, WV
The radar
The Sterling radar (KLWX), 166 km from the middle of the area, began a volume at 20:56 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 4:47 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier | 48 min |
| Jul 28, 4:58 PM EDT | Severe Thunderstorm Warning | RLX | Gilmer | 47 min |
| Jul 28, 5:08 PM EDT | Severe Thunderstorm Warning | RLX | Jackson | 52 min |
| Jul 28, 5:32 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 33 min |
| Jul 28, 5:38 PM EDT | Severe Thunderstorm Warning | RLX | Putnam | 67 min |
| Jul 28, 6:06 PM EDT | Severe Thunderstorm Warning | RLX | Kanawha | 54 min |
| Jul 28, 6:15 PM EDT | Severe Thunderstorm Warning | RLX | Kanawha | 45 min |
| Jul 28, 6:35 PM EDT | Severe Thunderstorm Warning | LWX | Stafford | 45 min |
| Jul 28, 7:10 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 35 min |
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 8.8 hours before the alert went out and 162 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
- 381 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -65 m²/s²
- 0-3 km storm-relative helicity
- -41 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 |
|---|---|---|---|---|
| Jul 28, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett | 6 hr |
Nearby
Severe Thunderstorm Watches in Virginia, 1997Severe Thunderstorm Watches in West Virginia, 1997Severe Thunderstorm Watches in Maryland, 1997Every severe thunderstorm watch in 1997
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.