Alert archive / Virginia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Wakefield, VA

April 25, 20146 counties in Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Apr 25, 2014, 4:35 PM EDT for 6 counties in Virginia. It was in force for 25 min. 1 report 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
Apr 25, 2014, 4:35 PM EDT (20:35 UTC)
Expired
Apr 25, 2014, 5:00 PM EDT
In force
25 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Chesterfield County, VA, City of Richmond, VA, Goochland County, VA, Hanover County, VA, Henrico County, VA, Powhatan County, VA

The radar

The Norfolk radar (KAKQ), 80 km from the middle of the area, began a volume at 20:38 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
Apr 25, 4:35 PM EDTTSTM WND DMGBon Air, VATREE DOWN IN BON AIR BLOCKING THE ROAD.

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
Apr 25, 1:19 PM EDTTornado WatchSPC10 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.6 hours before the alert went out and 153 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 2014-04-25Temperature 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, Washington/Dulle, VA at 12:00Z on 2014-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.193958Sfc1 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
2525 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

655 
WUUS51 KAKQ 252035
SVRAKQ
VAC041-075-085-087-145-760-252100-
/O.NEW.KAKQ.SV.W.0021.140425T2035Z-140425T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WAKEFIELD VA
435 PM EDT FRI APR 25 2014

THE NATIONAL WEATHER SERVICE IN WAKEFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL CHESTERFIELD COUNTY IN CENTRAL VIRGINIA...
  SOUTHEASTERN GOOCHLAND COUNTY IN CENTRAL VIRGINIA...
  CENTRAL HANOVER COUNTY IN CENTRAL VIRGINIA...
  NORTHERN HENRICO COUNTY IN CENTRAL VIRGINIA...
  EAST CENTRAL POWHATAN COUNTY IN CENTRAL VIRGINIA...
  CITY OF RICHMOND IN CENTRAL VIRGINIA...

* UNTIL 500 PM EDT

* AT 434 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  BON AIR...AND MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  UNIVERSITY OF RICHMOND...BON AIR AND TUCKAHOE AROUND 440 PM EDT.
  DOWNTOWN RICHMOND AROUND 445 PM EDT.
  LAKESIDE...VIRGINIA UNION UNIVERSITY...VIRGINIA COMMONWEALTH
  UNIVERSITY AND LAUREL AROUND 450 PM EDT.
  EAST HIGHLAND PARK...GLEN ALLEN AND HIGHLAND SPRINGS AROUND 455 PM
  EDT.
  MECHANICSVILLE AROUND 500 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE ROSLYN
HILLS...GREENDALE...DUMBARTON...SOLOMONS STORE...LONGDALE...
CHAMBERLAYNE...HANOVER AIRPORT...ATLEE AND ASHCAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3759 7779 3780 7745 3755 7722 3754 7723
      3739 7759
TIME...MOT...LOC 2035Z 237DEG 34KT 3752 7762
WIND...HAIL 60MPH 1.00IN

$$

GINGRICH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 3:46 AM EDTSmall Craft AdvisoryAKQ32 hr
Apr 25, 2:08 PM EDTSpecial Weather StatementAKQChesterfield, Henrico, City of Richmond67 min
Apr 25, 2:26 PM EDTSpecial Weather StatementAKQLunenburg, Mecklenburg64 min
Apr 25, 2:35 PM EDTSpecial Weather StatementAKQSouthampton40 min
Apr 25, 2:59 PM EDTSevere Thunderstorm WarningAKQBrunswick, Greensville, Mecklenburg46 min
Apr 25, 3:10 PM EDTSpecial Weather StatementAKQAmelia, Brunswick, Chesterfield, Cumberland, Dinwiddie, Goochland and 8 more60 min
Apr 25, 3:33 PM EDTSpecial Weather StatementAKQHenrico27 min
Apr 25, 3:55 PM EDTSevere Thunderstorm WarningAKQAmelia, Chesterfield, Nottoway, Powhatan50 min
Apr 25, 4:01 PM EDTSpecial Weather StatementAKQHenrico, King William29 min
Apr 25, 4:09 PM EDTTornado WarningAKQAmelia, Chesterfield, Powhatan36 min
Apr 25, 4:11 PM EDTSpecial Weather StatementAKQDinwiddie, Lunenburg, Mecklenburg, Nottoway64 min
Apr 25, 4:20 PM EDTSevere Thunderstorm WarningAKQGreensville, Southampton, City of Emporia40 min
Apr 25, 4:32 PM EDTSevere Thunderstorm WarningAKQAmelia, Charles City, Chesterfield, Dinwiddie, Henrico, City of Colonial Heights43 min
Apr 25, 5:01 PM EDTSpecial Weather StatementAKQCaroline, Essex, King and Queen, King William29 min
Apr 25, 5:07 PM EDTSpecial Weather StatementAKQBrunswick, Dinwiddie, Lunenburg, Mecklenburg, Nottoway53 min
Apr 25, 5:13 PM EDTSpecial Weather StatementAKQHenrico, New Kent47 min
Apr 25, 5:33 PM EDTSevere Thunderstorm WarningAKQSouthampton, City of Suffolk42 min
Apr 25, 5:54 PM EDTTornado WarningAKQSouthampton, City of Franklin, City of Suffolk36 min
Apr 25, 6:08 PM EDTSpecial Weather StatementAKQCharles City, Chesterfield, Essex, Henrico, King and Queen, King William and 3 more37 min
Apr 25, 7:03 PM EDTSpecial Weather StatementAKQCity of Chesapeake, City of Suffolk, City of Virginia Beach57 min
Apr 25, 7:42 PM EDTSpecial Marine WarningAKQ78 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2014Every severe thunderstorm warning in 2014

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.