Alert archive / Virginia / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 736
The Storm Prediction Center issued this severe thunderstorm watch at Jul 23, 2008, 12:44 PM EDT for 4 counties in Maryland; 47 counties in North Carolina; 53 counties in Virginia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2008, 12:44 PM EDT (16:44 UTC)
- Expired
- Jul 23, 2008, 8:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 104 counties
Dorchester County, MD, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Alamance County, NC, Beaufort County, NC, Bertie County, NC, Camden County, NC, Chatham County, NC, Chowan County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Hyde County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Onslow County, NC, Orange County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Accomack County, VA, Amelia County, VA, Brunswick 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, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Gloucester County, VA, Goochland 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, Louisa County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward 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 Raleigh/Durham radar (KRAX), 81 km from the middle of the area, began a volume at 17:01 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 1:01 PM EDT | Severe Thunderstorm Warning | RAH | Moore, Richmond | 44 min |
| Jul 23, 1:21 PM EDT | Severe Thunderstorm Warning | RAH | Anson, Hoke, Moore, Richmond, Scotland | 54 min |
| Jul 23, 2:08 PM EDT | Severe Thunderstorm Warning | RAH | Johnston, Sampson | 41 min |
| Jul 23, 2:44 PM EDT | Severe Thunderstorm Warning | AKQ | Gates, Hertford | 46 min |
| Jul 23, 3:03 PM EDT | Severe Thunderstorm Warning | RAH | Halifax | 42 min |
| Jul 23, 3:15 PM EDT | Severe Thunderstorm Warning | AKQ | Gates | 46 min |
| Jul 23, 3:17 PM EDT | Severe Thunderstorm Warning | AKQ | Bertie, Hertford, Northampton | 43 min |
| Jul 23, 3:22 PM EDT | Severe Thunderstorm Warning | AKQ | City of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach | 38 min |
| Jul 23, 3:27 PM EDT | Severe Thunderstorm Warning | AKQ | Northampton | 48 min |
| Jul 23, 3:30 PM EDT | Severe Thunderstorm Warning | AKQ | Bertie | 45 min |
| Jul 23, 4:07 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Granville, Wake | 38 min |
| Jul 23, 4:32 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Vance, Warren | 58 min |
| Jul 23, 4:42 PM EDT | Flash Flood Warning | AKQ | City of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach | 2 hr |
| Jul 23, 5:10 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 44 min |
| Jul 23, 5:30 PM EDT | Severe Thunderstorm Warning | AKQ | City of Virginia Beach | 24 min |
| Jul 23, 5:35 PM EDT | Severe Thunderstorm Warning | AKQ | Charles City, Hanover, Henrico, King William, New Kent | 40 min |
| Jul 23, 7:50 PM EDT | Severe Thunderstorm Warning | RAH | Alamance, Guilford | 40 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Newport, NC (KMHX), launched 12:00Z, 4.7 hours before the alert went out and 160 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
- 2114 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 781 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 12:33 PM EDT | Mesoscale Discussion | SPC | Caroline, Dorchester, Queen Anne's, Saint Mary's, Somerset, Talbot and 2 more | 57 min |
| Jul 23, 1:28 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 62 min |
| Jul 23, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 7 hr |
| Jul 23, 3:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 8 hr |
| Jul 23, 3:54 PM EDT | Mesoscale Discussion | SPC | Dorchester, Wicomico, Worcester | 66 min |
| Jul 23, 7:28 PM EDT | Mesoscale Discussion | SPC | Dorchester, Somerset, Wicomico, Worcester | 62 min |
| Jul 23, 10:38 AM EDT | Mesoscale Discussion | SPC | Alamance, Cabarrus, Caswell, Chatham, Durham, Franklin and 12 more | 67 min |
Nearby
Severe Thunderstorm Watches in Virginia, 2008Severe Thunderstorm Watches in North Carolina, 2008Severe Thunderstorm Watches in Maryland, 2008Every severe thunderstorm watch in 2008
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.