Alert archive / Virginia / Wind Advisories in 2008

Wind Advisory 6, NWS Baltimore/Washington

March 19, 200826 counties in Virginia; 11 counties in Maryland; 7 counties in West Virginia

NWS Baltimore/Washington issued this wind advisory at Mar 19, 2008, 8:46 PM EDT for 26 counties in Virginia; 11 counties in Maryland; 7 counties in West Virginia. It was in force for 19 hr.

The area

The counties it named.

The facts

Issued
Mar 19, 2008, 8:46 PM EDT (00:46 UTC)
Expired
Mar 20, 2008, 3:51 PM EDT
In force
19 hr
Issued by
NWS Baltimore/Washington
All 44 counties

Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Arlington County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Frederick County, VA, Greene County, VA, King George County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 39 km from the middle of the area, began a volume at 00:47 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.

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 0.8 hours before the alert went out and 229 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 00:00Z on 2008-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 186 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2008-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 640 square meters per square second.1939587897117136Sfc1 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
186 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
114 kt
0-1 km storm-relative helicity
640 m²/s²
0-3 km storm-relative helicity
689 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this wind advisory went out at Mar 19, 2:59 PM EDT, 5 hours 47 minutes earlier.

Area forecast discussion, Mar 19, 2:59 PM EDT, 5 hours 47 minutes before
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Hazardous weather outlook, Mar 19, 3:54 PM EDT, 4 hours 52 minutes before
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In the hours before

Special weather statement, Mar 19, 8:08 PM EDT, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
808 PM EDT WED MAR 19 2008

MDZ501-502-VAZ021-WVZ050-054-055-501>504-200200-
EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-HIGHLAND-
HAMPSHIRE-PENDLETON-HARDY-WESTERN GRANT-EASTERN GRANT-
WESTERN MINERAL-EASTERN MINERAL-
INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...BAYARD...
PETERSBURG...EMORYVILLE...HARTMANSVILLE...KEYSER...FORT ASHBY
808 PM EDT WED MAR 19 2008

...SHOWERS AND THUNDERSTORMS WITH GUSTY WINDS APPROACHING THE HIGHLANDS...

AT 808 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF SHOWERS AND THUNDERSTORMS FROM PRESTON COUNTY TO RANDOLPH
COUNTY WEST VIRGINIA...MOVING EAST AT 55 MPH. THIS LINE HAS
ALREADY PRODUCED SOME WIND DAMAGE ACROSS PORTIONS OF CENTRAL WEST
VIRGINIA.

WHILE THIS LINE MAY WEAKEN SOME AS IT MOVES INTO THE ALLEGHENY AND
POTOMAC HIGHLANDS...WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE.
THIS IS MOST LIKELY BETWEEN 9 AND 10 PM.

SOME LOCATIONS THAT WILL BE IMPACTED INCLUDE CUMBERLAND...
KEYSER...BAYARD AND ROMNEY.

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA WILL CONTINUE TO
MONITOR THESE STORMS. REMAIN ALERT IN CASE WARNINGS ARE ISSUED.

PELOQUIN

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 19, 11:20 PM EDTSevere Thunderstorm WarningLWXCulpeper, Greene, Madison, Orange55 min
Mar 19, 11:44 PM EDTSevere Thunderstorm WarningLWXFauquier50 min
Mar 19, 11:56 PM EDTSpecial Marine WarningLWX113 min
Mar 20, 12:10 AM EDTSevere Thunderstorm WarningLWXPrince William, Stafford, City of Manassas65 min
Mar 20, 12:13 AM EDTSevere Thunderstorm WarningLWXOrange, Spotsylvania, City of Fredericksburg62 min
Mar 20, 2:27 AM EDTSpecial Marine WarningLWX37 min

Nearby

Wind Advisories in Virginia, 2008Wind Advisories in Maryland, 2008Wind Advisories in West Virginia, 2008Every wind advisory 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.