Alert archive / Virginia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Wakefield, VA

March 1, 20178 counties in Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Mar 1, 2017, 2:21 PM EST for 8 counties in Virginia. It was in force for 39 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 1, 2017, 2:21 PM EST (19:21 UTC)
Expired
Mar 1, 2017, 3:00 PM EST
In force
39 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Essex County, VA, Hanover County, VA, Henrico County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Middlesex County, VA, Richmond County, VA

The radar

The Norfolk radar (KAKQ), 97 km from the middle of the area, began a volume at 19:23 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 was reported inside it

TimeReportWhereRemark
Mar 1, 2:25 PM ESTTSTM WND DMGEnfield, VATREES DOWN.
Mar 1, 2:30 PM ESTTSTM WND DMG5 N Saint Stephens Chur, VATREE KNOCKED DOWN.
Mar 1, 2:35 PM ESTTSTM WND DMG1 Ene Central Garage, VAFEW TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 1, 1:13 PM ESTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.4 hours before the alert went out and 127 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, Washington/Dulle, VA at 12:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 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
32 J/kg
Mixed-layer CIN
-201 J/kg
Mixed-layer LCL
1104 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

446 
WUUS51 KAKQ 011921
SVRAKQ
VAC057-085-087-097-101-103-119-159-012000-
/O.NEW.KAKQ.SV.W.0021.170301T1921Z-170301T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wakefield VA
221 PM EST WED MAR 1 2017

The National Weather Service in Wakefield has issued a

* Severe Thunderstorm Warning for...
  Northwestern Middlesex County in eastern Virginia...
  King and Queen County in east central Virginia...
  Richmond County in east central Virginia...
  North central Henrico County in central Virginia...
  King William County in east central Virginia...
  Southeastern Hanover County in central Virginia...
  Western Lancaster County in eastern Virginia...
  Essex County in east central Virginia...

* Until 300 PM EST

* At 220 PM EST, severe thunderstorms were located along a line
  extending from near Champlain to near Studley, moving east at 70
  mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  King William, Tappahannock, Warsaw, Urbanna, Saint Stephens Church,
  Robley, King And Queen Court House, Mechanicsville, Hanover,
  Manquin, Beulahville, Center Cross, Morattico, Laurel, Farnham,
  Mangohick, Haynesville, Jamaica, Millers Tavern and Newtown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Please send your reports of hail and or wind damage...including
trees or large limbs downed...by calling NOAA'S National Weather
Service in Wakefield at
...7 5 7...8 9 9...2 4 1 5.
&&

LAT...LON 3798 7666 3794 7656 3787 7655 3784 7651
      3772 7652 3764 7648 3762 7753 3779 7739
      3778 7739 3782 7730 3791 7724 3788 7721
      3789 7718 3797 7716 3797 7707 3798 7707
TIME...MOT...LOC 1920Z 259DEG 59KT 3797 7701 3768 7736 

HAIL...<.75IN
WIND...60MPH
 
$$

MRD
2 follow-up statements
958 
WWUS51 KAKQ 011939
SVSAKQ

Severe Weather Statement
National Weather Service Wakefield VA
239 PM EST WED MAR 1 2017

VAC087-011949-
/O.CAN.KAKQ.SV.W.0021.000000T0000Z-170301T2000Z/
Henrico VA-
239 PM EST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL HENRICO COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 700 PM EST for
central, eastern and east central Virginia.

LAT...LON 3793 7656 3787 7655 3784 7651 3772 7652
      3764 7648 3762 7740 3798 7692 3798 7666
TIME...MOT...LOC 1939Z 269DEG 46KT 3800 7658 3761 7725 

$$

VAC057-085-097-101-103-119-159-012000-
/O.CON.KAKQ.SV.W.0021.000000T0000Z-170301T2000Z/
Middlesex VA-King and Queen VA-Richmond VA-King William VA-
Hanover VA-Lancaster VA-Essex VA-
239 PM EST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EST
FOR NORTHWESTERN MIDDLESEX...CENTRAL KING AND QUEEN...RICHMOND...
CENTRAL KING WILLIAM...SOUTHEASTERN HANOVER...WESTERN LANCASTER AND
SOUTHEASTERN ESSEX COUNTIES...

At 239 PM EST, severe thunderstorms were located along a line
extending from Kinsale to near Studley, moving east at 55 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
King William, Tappahannock, Warsaw, Urbanna, Saint Stephens Church,
Robley, King And Queen Court House, Mechanicsville, Manquin, Center
Cross, Morattico, Farnham, Haynesville, Jamaica, Millers Tavern,
Dunnsville, Church View, Aylett, Sharps and Studley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Please send your reports of hail and or wind damage...including
trees or large limbs downed...by calling NOAA'S National Weather
Service in Wakefield at
...7 5 7...8 9 9...2 4 1 5.&&

LAT...LON 3793 7656 3787 7655 3784 7651 3772 7652
      3764 7648 3762 7740 3798 7692 3798 7666
TIME...MOT...LOC 1939Z 269DEG 46KT 3800 7658 3761 7725 

HAIL...<.75IN
WIND...60MPH
 
$$

MRD
345 
WWUS51 KAKQ 011959
SVSAKQ

Severe Weather Statement
National Weather Service Wakefield VA
259 PM EST WED MAR 1 2017

VAC057-085-097-101-103-119-159-012009-
/O.EXP.KAKQ.SV.W.0021.000000T0000Z-170301T2000Z/
Middlesex VA-King and Queen VA-Richmond VA-King William VA-
Hanover VA-Lancaster VA-Essex VA-
259 PM EST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MIDDLESEX...
CENTRAL KING AND QUEEN...RICHMOND...CENTRAL KING WILLIAM...
SOUTHEASTERN HANOVER...WESTERN LANCASTER AND SOUTHEASTERN ESSEX
COUNTIES WILL EXPIRE AT 300 PM EST...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning will
be allowed to expire.

A severe thunderstorm watch remains in effect until 700 PM EST for
central, eastern and east central Virginia.

LAT...LON 3793 7656 3787 7655 3784 7651 3772 7652
      3764 7648 3762 7740 3798 7692 3798 7666
TIME...MOT...LOC 1959Z 259DEG 59KT 3806 7621 3767 7688 

$$

MINNICK

The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 1, 2:46 AM ESTGale WarningAKQ33 hr
Mar 1, 11:19 AM ESTLow Water AdvisoryAKQ8 hr
Mar 1, 12:33 PM ESTSpecial Weather StatementAKQFluvanna42 min
Mar 1, 1:16 PM ESTSpecial Weather StatementAKQCaroline, Cumberland, Fluvanna, Goochland, Louisa, Powhatan and 1 more44 min
Mar 1, 1:38 PM ESTSevere Thunderstorm WarningAKQCumberland, Goochland, Hanover, Louisa, Powhatan52 min
Mar 1, 1:45 PM ESTSpecial Marine WarningAKQ2 hr
Mar 1, 1:53 PM ESTSpecial Weather StatementAKQCaroline, Essex, Richmond, Westmoreland52 min
Mar 1, 2:07 PM ESTSevere Thunderstorm WarningAKQCaroline, Essex, Northumberland, Richmond, Westmoreland38 min
Mar 1, 2:52 PM ESTSpecial Weather StatementAKQKing and Queen, Lancaster, Northumberland23 min
Mar 1, 5:50 PM ESTSpecial Weather StatementAKQBrunswick, Greensville, Lunenburg, Mecklenburg, City of Emporia40 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2017Every severe thunderstorm warning in 2017

Sources

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