Alert archive / Virginia / Tornado Watches in 2021
Tornado Watch 350
The Storm Prediction Center issued this tornado watch at Jul 8, 2021, 1:50 PM EDT for 6 counties in Maryland; 17 counties in North Carolina; 42 counties in Virginia. It was in force for 11 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2021, 1:50 PM EDT (17:50 UTC)
- Expired
- Jul 9, 2021, 1:00 AM EDT
- In force
- 11 hr
- Issued by
- the Storm Prediction Center
- Strongest gust expected
- 60 kt
All 65 counties
Calvert County, MD, Dorchester County, MD, Saint Mary's County, MD, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Beaufort County, NC, Bertie County, NC, Camden County, NC, Chowan County, NC, Currituck County, NC, Dare County, NC, Gates County, NC, Halifax County, NC, Hertford County, NC, Hyde County, NC, Martin County, NC, Northampton County, NC, Pasquotank County, NC, Perquimans County, NC, Pitt County, NC, Tyrrell County, NC, Washington County, NC, Accomack County, VA, Caroline County, VA, Charles City County, VA, Chesterfield 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 Richmond, VA, City of Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Dinwiddie County, VA, Essex County, VA, Gloucester County, VA, Greensville County, VA, Hanover 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
The radar
The Norfolk radar (KAKQ), 92 km from the middle of the area, began a volume at 17:54 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 30%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 2:44 PM EDT | Tornado Warning | MHX | Hyde | 31 min |
| Jul 8, 3:09 PM EDT | Tornado Warning | MHX | Hyde, Tyrrell, Washington | 36 min |
| Jul 8, 3:39 PM EDT | Tornado Warning | AKQ | Bertie, Gates, Hertford | 36 min |
| Jul 8, 3:55 PM EDT | Tornado Warning | AKQ | Hertford, Northampton | 35 min |
| Jul 8, 4:00 PM EDT | Tornado Warning | AKQ | Gates, Hertford | 30 min |
| Jul 8, 5:20 PM EDT | Flash Flood Warning | AKQ | Northampton | 4 hr |
| Jul 8, 5:39 PM EDT | Tornado Warning | AKQ | Camden, Gates | 36 min |
| Jul 8, 6:17 PM EDT | Tornado Warning | AKQ | Isle of Wight, Surry, City of Newport News, City of Suffolk | 14 min |
| Jul 8, 6:29 PM EDT | Tornado Warning | MHX | Beaufort, Hyde | 31 min |
| Jul 8, 6:43 PM EDT | Tornado Warning | AKQ | Gates | 32 min |
| Jul 8, 7:06 PM EDT | Tornado Warning | AKQ | Isle of Wight, City of Suffolk | 24 min |
| Jul 8, 7:09 PM EDT | Tornado Warning | AKQ | Camden, Currituck, Pasquotank, Perquimans | 36 min |
| Jul 8, 7:49 PM EDT | Flash Flood Warning | AKQ | Charles City, Chesterfield, Dinwiddie, Henrico, Prince George, City of Colonial Heights and 2 more | 6 hr |
| Jul 8, 8:07 PM EDT | Tornado Warning | AKQ | City of Chesapeake, City of Norfolk, City of Virginia Beach | 23 min |
| Jul 8, 8:25 PM EDT | Tornado Warning | AKQ | Currituck | 35 min |
| Jul 8, 8:49 PM EDT | Flash Flood Warning | AKQ | Charles City, Henrico, James City, King William, New Kent, Prince George | 5 hr |
| Jul 8, 10:31 PM EDT | Tornado Warning | LWX | Saint Mary's | 29 min |
| Jul 8, 11:13 PM EDT | Flash Flood Warning | LWX | Saint Mary's | 76 min |
| Jul 8, 11:13 PM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 17 min |
| Jul 8, 11:48 PM EDT | Tornado Warning | AKQ | Wicomico, Worcester | 27 min |
| Jul 9, 12:04 AM EDT | Tornado Warning | AKQ | Worcester | 26 min |
| Jul 9, 12:05 AM EDT | Tornado Warning | AKQ | Wicomico | 25 min |
| Jul 9, 12:25 AM EDT | Flash Flood Warning | AKQ | Dorchester | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.8 hours before the alert went out and 97 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
- 654 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1222 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
890 WWUS20 KWNS 081747 SEL0 SPC WW 081747 MDZ000-NCZ000-VAZ000-CWZ000-090300- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 350 NWS Storm Prediction Center Norman OK 150 PM EDT Thu Jul 8 2021 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Eastern Maryland Eastern North Carolina Eastern Virginia Coastal Waters * Effective this Thursday afternoon and evening from 150 PM until 1100 PM EDT. * Primary threats include... A few tornadoes possible Isolated damaging wind gusts to 70 mph possible SUMMARY...A moist air mass and strong low-level winds associated with Elsa will support the possibility of supercells capable of brief tornadoes this afternoon and evening as Elsa continues north-northeastward. The tornado watch area is approximately along and 65 statute miles east and west of a line from 25 miles east northeast of Patuxent River MD to 65 miles south southwest of Elizabeth City NC. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...CONTINUE...WW 349... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 15025. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 6:48 PM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 117 min |
| Jul 8, 1:38 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Columbus, New Hanover, Pender, Robeson | 2 hr |
| Jul 8, 2:01 AM EDT | Tornado Watch | SPC | Bladen, Brunswick, Columbus, New Hanover, Pender | 7 hr |
| Jul 8, 7:09 AM EDT | Mesoscale Discussion | SPC | Bladen, Brunswick, Carteret, Columbus, Craven, Duplin and 11 more | 2 hr |
| Jul 8, 8:35 AM EDT | Tornado Watch | SPC | Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 23 more | 6 hr |
| Jul 8, 12:11 PM EDT | Mesoscale Discussion | SPC | Beaufort, Bertie, Camden, Carteret, Chowan, Craven and 23 more | 2 hr |
| Jul 8, 4:08 PM EDT | Mesoscale Discussion | SPC | Camden, Chowan, Currituck, Gates, Hertford, Pasquotank and 2 more | 2 hr |
Nearby
Tornado Watches in Virginia, 2021Tornado Watches in North Carolina, 2021Tornado Watches in Maryland, 2021Every tornado watch in 2021
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.