Alert archive / Virginia / Tornado Watches in 2016

Tornado Watch 27

February 24, 20164 counties in Maryland; 16 counties in North Carolina; 61 counties in Virginia

The Storm Prediction Center issued this tornado watch at Feb 24, 2016, 1:46 PM EST for 4 counties in Maryland; 16 counties in North Carolina; 61 counties in Virginia. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2016, 1:46 PM EST (18:46 UTC)
Expired
Feb 24, 2016, 11:00 PM EST
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 81 counties

Dorchester County, MD, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Beaufort County, NC, Bertie County, NC, Camden County, NC, Carteret County, NC, Chowan County, NC, Currituck County, NC, Dare County, NC, Gates County, NC, Hertford County, NC, Hyde County, NC, Northampton County, NC, Pamlico County, NC, Pasquotank County, NC, Perquimans County, NC, Tyrrell County, NC, Washington County, NC, Accomack County, VA, Amelia County, VA, Appomattox County, VA, Brunswick County, VA, Buckingham County, VA, Campbell County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Danville, VA, City of Emporia, VA, City of Franklin, VA, City of Hampton, VA, City of Hopewell, VA, City of Lynchburg, 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, Halifax 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, Pittsylvania 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 Norfolk radar (KAKQ), 88 km from the middle of the area, began a volume at 18:48 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
70%
One or more EF2 to EF5 tornadoes
50%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 24, 1:55 PM ESTSevere Thunderstorm WarningRNKPittsylvania65 min
Feb 24, 2:11 PM ESTSevere Thunderstorm WarningAKQBertie49 min
Feb 24, 2:20 PM ESTSevere Thunderstorm WarningAKQPrince George, Surry, Sussex25 min
Feb 24, 2:26 PM ESTSevere Thunderstorm WarningRNKHalifax, Henry, Pittsylvania, City of Danville64 min
Feb 24, 2:37 PM ESTSevere Thunderstorm WarningAKQGates, Hertford38 min
Feb 24, 2:37 PM ESTTornado WarningAKQCharles City, James City, Prince George, Surry, Sussex, City of Williamsburg23 min
Feb 24, 2:41 PM ESTTornado WarningRNKPittsylvania, City of Danville34 min
Feb 24, 2:54 PM ESTTornado WarningRNKHalifax, Pittsylvania, City of Danville36 min
Feb 24, 2:56 PM ESTTornado WarningAKQCharles City, James City, King and Queen, King William, New Kent34 min
Feb 24, 3:01 PM ESTSevere Thunderstorm WarningAKQChowan, Gates, Hertford29 min
Feb 24, 3:08 PM ESTSevere Thunderstorm WarningRNKAmherst, Appomattox, Campbell, Charlotte, Halifax, City of Lynchburg67 min
Feb 24, 3:11 PM ESTTornado WarningAKQCaroline, Goochland, Hanover, Louisa, Powhatan23 min
Feb 24, 3:15 PM ESTTornado WarningRNKCampbell, Charlotte, Halifax, Pittsylvania30 min
Feb 24, 3:24 PM ESTTornado WarningAKQIsle of Wight, York, City of Hampton, City of Newport News, City of Poquoson, City of Suffolk36 min
Feb 24, 3:27 PM ESTTornado WarningRNKAppomattox, Campbell33 min
Feb 24, 3:31 PM ESTTornado WarningAKQCity of Chesapeake, City of Norfolk, City of Portsmouth, City of Suffolk, City of Virginia Beach29 min
Feb 24, 3:39 PM ESTSevere Thunderstorm WarningRNKAppomattox, Buckingham66 min
Feb 24, 3:43 PM ESTTornado WarningRNKAppomattox, Campbell, Charlotte32 min
Feb 24, 3:45 PM ESTTornado WarningRNKAppomattox, Buckingham30 min
Feb 24, 3:51 PM ESTTornado WarningAKQPrince Edward27 min
Feb 24, 3:52 PM ESTSevere Thunderstorm WarningRNKCharlotte, Halifax53 min
Feb 24, 3:54 PM ESTTornado WarningAKQGloucester, Mathews, York, City of Poquoson36 min
Feb 24, 4:08 PM ESTTornado WarningAKQFluvanna37 min
Feb 24, 4:13 PM ESTTornado WarningRNKCharlotte, Halifax32 min
Feb 24, 4:22 PM ESTSevere Thunderstorm WarningAKQLunenburg, Mecklenburg23 min
Feb 24, 4:25 PM ESTTornado WarningAKQCumberland, Fluvanna, Goochland35 min
Feb 24, 4:28 PM ESTSevere Thunderstorm WarningAKQCumberland, Nottoway, Prince Edward32 min
Feb 24, 4:32 PM ESTSevere Thunderstorm WarningAKQLouisa28 min
Feb 24, 4:34 PM ESTSevere Thunderstorm WarningRNKCharlotte, Halifax24 min
Feb 24, 4:39 PM ESTTornado WarningAKQBrunswick, Lunenburg, Mecklenburg36 min
Feb 24, 4:41 PM ESTTornado WarningAKQAmelia, Cumberland, Lunenburg, Nottoway, Prince Edward34 min
Feb 24, 4:47 PM ESTTornado WarningAKQFluvanna, Goochland, Louisa28 min
Feb 24, 4:49 PM ESTSevere Thunderstorm WarningAKQLunenburg, Mecklenburg, Nottoway, Prince Edward26 min
Feb 24, 4:51 PM ESTTornado WarningAKQDorchester, Somerset, Wicomico39 min
Feb 24, 5:01 PM ESTSevere Thunderstorm WarningMHXBeaufort, Craven, Hyde, Martin, Pamlico, Washington30 min
Feb 24, 5:04 PM ESTTornado WarningAKQAmelia, Chesterfield, Goochland, Nottoway, Powhatan, Prince Edward26 min
Feb 24, 5:11 PM ESTTornado WarningMHXBeaufort, Hyde, Washington19 min
Feb 24, 5:11 PM ESTTornado WarningAKQBrunswick, Dinwiddie, Lunenburg, Mecklenburg, Nottoway34 min
Feb 24, 5:22 PM ESTTornado WarningAKQCaroline, Goochland, Hanover, Louisa, Powhatan23 min
Feb 24, 5:28 PM ESTTornado WarningAKQAmelia, Goochland, Hanover, Henrico, Powhatan32 min
Feb 24, 5:32 PM ESTTornado WarningAKQBrunswick, Dinwiddie, Greensville, Mecklenburg, Sussex43 min
Feb 24, 5:34 PM ESTTornado WarningAKQAmelia, Chesterfield, Dinwiddie, Nottoway41 min
Feb 24, 5:39 PM ESTTornado WarningAKQCaroline, Goochland, Hanover, Louisa36 min
Feb 24, 5:52 PM ESTTornado WarningAKQChesterfield, Hanover, Henrico, City of Richmond38 min
Feb 24, 5:58 PM ESTTornado WarningAKQCaroline, Hanover32 min
Feb 24, 6:06 PM ESTTornado WarningAKQBrunswick, Dinwiddie, Prince George, Sussex, City of Petersburg39 min
Feb 24, 6:11 PM ESTTornado WarningAKQNorthampton34 min
Feb 24, 6:14 PM ESTTornado WarningAKQEssex, Hanover, King and Queen, King William46 min
Feb 24, 6:35 PM ESTTornado WarningAKQCharles City, New Kent, Prince George, City of Hopewell40 min
Feb 24, 6:38 PM ESTTornado WarningAKQEssex, Northumberland, Richmond, Westmoreland37 min
Feb 24, 6:45 PM ESTTornado WarningAKQDinwiddie, Prince George, Sussex30 min
Feb 24, 6:51 PM ESTSevere Thunderstorm WarningAKQNorthampton24 min
Feb 24, 7:01 PM ESTTornado WarningAKQEssex, King and Queen, King William, Lancaster, Middlesex, New Kent and 3 more44 min
Feb 24, 7:06 PM ESTTornado WarningAKQCharles City, Prince George, City of Hopewell, City of Petersburg39 min
Feb 24, 7:09 PM ESTTornado WarningAKQBertie, Gates, Hertford, Northampton36 min
Feb 24, 7:15 PM ESTSevere Thunderstorm WarningAKQDinwiddie, Greensville, Prince George, Sussex, City of Colonial Heights, City of Petersburg30 min
Feb 24, 7:24 PM ESTTornado WarningAKQCharles City, Henrico, King William, New Kent36 min
Feb 24, 7:29 PM ESTSevere Thunderstorm WarningAKQHertford, Northampton31 min
Feb 24, 7:40 PM ESTTornado WarningAKQBertie, Camden, Gates, Hertford, Northampton, Pasquotank35 min
Feb 24, 7:40 PM ESTTornado WarningAKQCharles City, Henrico, James City, King and Queen, King William, New Kent and 2 more35 min
Feb 24, 7:52 PM ESTSevere Thunderstorm WarningAKQEssex, King and Queen, Lancaster, Middlesex, Northumberland, Richmond and 1 more53 min
Feb 24, 7:58 PM ESTSevere Thunderstorm WarningAKQDorchester47 min
Feb 24, 8:05 PM ESTTornado WarningAKQNorthumberland, Richmond, Westmoreland25 min
Feb 24, 8:08 PM ESTSevere Thunderstorm WarningAKQEssex, King and Queen, King William, Lancaster, Middlesex, Richmond37 min
Feb 24, 8:13 PM ESTTornado WarningAKQGates32 min
Feb 24, 8:13 PM ESTTornado WarningAKQEssex, King and Queen, King William, Lancaster, Middlesex, New Kent and 1 more32 min
Feb 24, 8:23 PM ESTTornado WarningAKQEssex, Lancaster, Middlesex, Northumberland, Richmond, Westmoreland37 min
Feb 24, 8:30 PM ESTSevere Thunderstorm WarningAKQCity of Hampton, City of Newport News, City of Poquoson15 min
Feb 24, 8:44 PM ESTSevere Thunderstorm WarningAKQGloucester, Lancaster, Mathews, Middlesex11 min
Feb 24, 8:45 PM ESTTornado WarningAKQGates, Hertford30 min
Feb 24, 8:49 PM ESTSevere Thunderstorm WarningAKQDorchester41 min
Feb 24, 9:58 PM ESTSevere Thunderstorm WarningMHXDare, Hyde62 min
Feb 24, 10:07 PM ESTSevere Thunderstorm WarningAKQAccomack, Northampton23 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

Roanoke, VA (KRNK), launched 12:00Z, 6.8 hours before the alert went out and 152 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.

Skew-T log-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 828 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
465 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
828 m²/s²
0-3 km storm-relative helicity
913 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

358 
WWUS20 KWNS 241842
SEL7  
SPC WW 241842
MDZ000-NCZ000-VAZ000-CWZ000-250200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 27
NWS STORM PREDICTION CENTER NORMAN OK
145 PM EST WED FEB 24 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHEAST MARYLAND
  EASTERN NORTH CAROLINA
  SOUTHERN AND SOUTHEAST VIRGINIA
  COASTAL WATERS

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 145 PM
  UNTIL 900 PM EST.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY...ONGOING STRONG TO SEVERE STORMS OVER PARTS OF EAST-CENTRAL
AND WESTERN NORTH CAROLINA SHOULD PROGRESS NORTHEASTWARD INTO EARLY
EVENING WITH ATTENDANT TORNADO AND DAMAGING WIND HAZARDS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHEAST OF
RICHMOND VIRGINIA TO 30 MILES WEST SOUTHWEST OF ROANOKE RAPIDS
NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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 26...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 21045.


...GRAMS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 1:18 PM ESTMesoscale DiscussionSPCCalvert, Charles, Prince George's, Saint Mary's117 min
Feb 24, 3:06 PM ESTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more54 min
Feb 24, 3:20 PM ESTTornado WatchSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more8 hr
Feb 24, 4:46 PM ESTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 11 more89 min
Feb 24, 6:40 PM ESTMesoscale DiscussionSPCCharles, Saint Mary's2 hr
Feb 24, 8:14 AM ESTMesoscale DiscussionSPCAvery, Buncombe, Cherokee, Clay, Graham, Haywood and 10 more2 hr
Feb 24, 10:46 AM ESTMesoscale DiscussionSPCAlamance, Alexander, Anson, Burke, Cabarrus, Caldwell and 36 more119 min
Feb 24, 11:16 AM ESTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 28 more89 min
Feb 24, 11:16 AM ESTTornado WatchSPCAlamance, Alexander, Anson, Bladen, Brunswick, Cabarrus and 52 more8 hr
Feb 24, 2:55 PM ESTMesoscale DiscussionSPCAlamance, Anson, Bladen, Brunswick, Caswell, Chatham and 28 more95 min
Feb 24, 6:50 PM ESTTornado WatchSPCBeaufort, Bertie, Bladen, Brunswick, Camden, Carteret and 36 more4 hr

Nearby

Tornado Watches in Virginia, 2016Tornado Watches in North Carolina, 2016Tornado Watches in Maryland, 2016Every tornado watch in 2016

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.