Alert archive / Virginia / Tornado Watches in 2010

Tornado Watch 688

September 30, 20105 states

The Storm Prediction Center issued this tornado watch at Sep 30, 2010, 4:55 AM EDT for 5 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Sep 30, 2010, 4:55 AM EDT (08:55 UTC)
Expired
Sep 30, 2010, 1:00 PM EDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 126 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, 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, Beaufort County, NC, Bertie County, NC, Bladen County, NC, Brunswick County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Dare County, NC, Duplin 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, Hyde County, NC, Johnston County, NC, Jones County, NC, Lenoir County, NC, Martin County, NC, Nash County, NC, New Hanover County, NC, Northampton County, NC, Onslow County, NC, Pamlico County, NC, Pasquotank County, NC, Pender County, NC, Perquimans County, NC, Pitt County, NC, Sampson County, NC, Tyrrell County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Atlantic County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Accomack County, VA, Arlington County, VA, Caroline County, VA, Charles City County, VA, Chesterfield County, VA, City of Alexandria, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Fairfax, VA, City of Falls Church, VA, City of Franklin, VA, City of Fredericksburg, VA, City of Hampton, VA, City of Hopewell, VA, City of Manassas, VA, City of Manassas Park, 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, Fairfax 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 George 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, Prince William County, VA, Richmond County, VA, Southampton County, VA, Spotsylvania County, VA, Stafford County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA

The radar

The Norfolk radar (KAKQ), 63 km from the middle of the area, began a volume at 08:55 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
60%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
10%
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
50%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Sep 30, 4:57 AM EDTFlash Flood WarningLWXAnne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's6 hr
Sep 30, 4:59 AM EDTTornado WarningAKQCamden, Currituck, Pasquotank31 min
Sep 30, 5:13 AM EDTTornado WarningAKQCity of Chesapeake, City of Norfolk, City of Virginia Beach32 min
Sep 30, 5:18 AM EDTTornado WarningAKQCamden, Gates, Pasquotank, Perquimans42 min
Sep 30, 5:24 AM EDTTornado WarningAKQCamden, Currituck, Pasquotank51 min
Sep 30, 5:25 AM EDTFlash Flood WarningAKQIsle of Wight, York, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk and 4 more3 hr
Sep 30, 5:45 AM EDTFlash Flood WarningRAHDurham, Franklin, Granville, Harnett, Johnston, Vance and 1 more3 hr
Sep 30, 5:47 AM EDTTornado WarningAKQMathews18 min
Sep 30, 6:17 AM EDTTornado WarningLWXCalvert, Saint Mary's28 min
Sep 30, 6:27 AM EDTTornado WarningAKQCity of Chesapeake, City of Norfolk, City of Virginia Beach25 min
Sep 30, 6:39 AM EDTFlash Flood WarningLWXAnne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more6 hr
Sep 30, 6:51 AM EDTSevere Thunderstorm WarningILMBrunswick, Columbus39 min
Sep 30, 7:07 AM EDTTornado WarningMHXMartin, Washington12 min
Sep 30, 7:16 AM EDTTornado WarningAKQCity of Chesapeake, City of Norfolk, City of Virginia Beach13 min
Sep 30, 7:43 AM EDTFlash Flood WarningAKQGloucester, Lancaster, Mathews, Middlesex, Northumberland, Richmond and 2 more3 hr
Sep 30, 8:00 AM EDTTornado WarningPHIKent45 min
Sep 30, 8:00 AM EDTFlash Flood WarningAKQBertie, Chowan, Gates, Hertford, Perquimans3 hr
Sep 30, 8:01 AM EDTFlash Flood WarningRAHEdgecombe, Halifax, Wayne, Wilson4 hr
Sep 30, 8:12 AM EDTTornado WarningAKQMathews, Middlesex18 min
Sep 30, 8:13 AM EDTTornado WarningAKQCamden, Currituck21 min
Sep 30, 8:37 AM EDTFlash Flood WarningAKQCamden, Currituck, Pasquotank3 hr
Sep 30, 8:40 AM EDTFlash Flood WarningRAHFranklin, Granville, Harnett, Johnston, Vance, Wake3 hr
Sep 30, 8:45 AM EDTSevere Thunderstorm WarningLWXHarford45 min
Sep 30, 8:58 AM EDTTornado WarningLWXCalvert, Saint Mary's47 min
Sep 30, 9:24 AM EDTSevere Thunderstorm WarningAKQIsle of Wight, James City, Surry14 min
Sep 30, 9:28 AM EDTTornado WarningLWXAnne Arundel47 min
Sep 30, 9:33 AM EDTSevere Thunderstorm WarningAKQCharles City, James City, New Kent26 min
Sep 30, 9:36 AM EDTTornado WarningAKQCamden, Currituck, Pasquotank24 min
Sep 30, 9:49 AM EDTTornado WarningLWXAnne Arundel, Calvert26 min
Sep 30, 9:56 AM EDTTornado WarningAKQCity of Chesapeake, City of Norfolk, City of Portsmouth16 min
Sep 30, 10:38 AM EDTFlash Flood WarningLWXAnne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's and 1 more6 hr
Sep 30, 10:49 AM EDTSevere Thunderstorm WarningLWXHoward, Montgomery, Prince George's26 min
Sep 30, 12:01 PM EDTSevere Thunderstorm WarningAKQCity of Chesapeake, City of Norfolk, City of Portsmouth, City of Suffolk15 min
Sep 30, 12:07 PM EDTFlash Flood WarningILMBrunswick, New Hanover, Pender4 hr
Sep 30, 12:22 PM EDTFlash Flood WarningLWXAnne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more6 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 30, 4:02 AM EDTMesoscale DiscussionSPCKent, Sussex118 min
Sep 30, 8:25 AM EDTMesoscale DiscussionSPCKent, New Castle, Sussex95 min
Sep 30, 10:49 AM EDTMesoscale DiscussionSPCKent, New Castle, Sussex116 min
Sep 30, 12:39 PM EDTTornado WatchSPCKent, New Castle, Sussex6 hr
Sep 30, 3:16 PM EDTMesoscale DiscussionSPCKent, New Castle, Sussex119 min
Sep 30, 5:43 PM EDTMesoscale DiscussionSPCSomerset92 min
Sep 29, 8:42 PM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 28 more93 min
Sep 29, 9:39 PM EDTTornado WatchSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 31 more7 hr
Sep 30, 12:47 AM EDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 31 more88 min
Sep 30, 3:07 PM EDTMesoscale DiscussionSPCBeaufort, Camden, Carteret, Chowan, Craven, Currituck and 10 more113 min

Nearby

Tornado Watches in Virginia, 2010Tornado Watches in North Carolina, 2010Tornado Watches in Maryland, 2010Every tornado watch in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.