Alert archive / West Virginia / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 240, NWS Baltimore/Washington

August 27, 2003Grant County, Mineral County, West Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 27, 2003, 7:50 AM EDT for Grant County, Mineral County, West Virginia. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 27, 2003, 7:50 AM EDT (11:50 UTC)
Expired
Aug 27, 2003, 8:30 AM EDT
In force
40 min
Issued by
NWS Baltimore/Washington
Area
Counties, with a storm outline in the text

Counties Grant County, WV, Mineral County, WV

The radar

The Sterling radar (KLWX), 140 km from the middle of the area, began a volume at 11:53 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 11.8 hours before the alert went out and 148 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 00:00Z on 2003-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 941 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2003-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 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
941 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
1163 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 27, 2:30 AM EDT, 5 hours 20 minutes earlier.

Area forecast discussion, Aug 27, 2:30 AM EDT, 5 hours 20 minutes before
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Hazardous weather outlook, Aug 27, 4:25 AM EDT, 3 hours 25 minutes before
DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ021-025>031-036>042-
050>057-WVZ048>055-271700-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 AM EDT WED AUG 27 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE CHESAPEAKE
BAY AND EAST OF GARRETT COUNTY...THE DISTRICT OF COLUMBIA...NORTHERN
VIRGINIA...THE NORTHERN AND CENTRAL SHENANDOAH VALLEY...AND THE
EASTERN PANHANDLE OF WEST VIRGINIA.

.DAY ONE...TODAY

AGAIN TODAY...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO
AFFECT THE AREA. THE ATMOSPHERE WILL BECOME VERY UNSTABLE THIS
AFTERNOON...AND WITH VERY STRONG WINDS ALOFT...SOME OF THESE
THUNDERSTORMS MAY BE SEVERE.

ISOLATED SEVERE WEATHER IS POSSIBLE OVER THE ENTIRE AREA TODAY.
STRONG DAMAGING WINDS WILL BE THE PRIMARY RISK FROM SEVERE
THUNDERSTORMS TODAY...BUT LARGE HAIL IS ALSO POSSIBLE.

THE MOST LIKELY TIME FOR SEVERE WEATHER TODAY WILL BE BETWEEN 1 PM
AND 8 PM.

.DAYS TWO THROUGH SEVEN...

THERE IS A CHANCE OF SHOWERS AND THUNDERSTORMS FRIDAY THROUGH SUNDAY
ACROSS THE AREA. SOME OF THESE THUNDERSTORMS MAY PRODUCE LOCALLY
HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED BY AFTERNOON.

MANNING

In the hours before

Special weather statement, Aug 27, 2:40 AM EDT, 5 hours 10 minutes before
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Special weather statement, Aug 27, 4:22 AM EDT, 3 hours 28 minutes before
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Special weather statement, Aug 27, 4:22 AM EDT, 3 hours 28 minutes before
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Special weather statement, Aug 27, 7:40 AM EDT, 10 minutes before
WVZ049-271230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
740 AM EDT WED AUG 27 2003

...STRONG THUNDERSTORM MOVING INTO MINERAL COUNTY...

AT 740 AM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
SOUTHWEST OF LUKE...MOVING SOUTHEAST AT 40 MPH. THIS STORM WILL BE
CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH. THE
COMMUNITIES OF KEYSER AND PIEDMONT WILL BE AFFECTED BY THIS STORM
THROUGH 830 AM EDT. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN
CASE WARNINGS ARE ISSUED.

MANNING

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 12:19 AM EDTSevere Thunderstorm WarningLWXShenandoah41 min
Aug 27, 5:40 PM EDTSevere Thunderstorm WarningLWXShenandoah, Warren50 min
Aug 27, 5:56 PM EDTSevere Thunderstorm WarningLWXFauquier64 min
Aug 27, 6:46 PM EDTSevere Thunderstorm WarningLWXFairfax, Loudoun44 min
Aug 27, 6:50 PM EDTSevere Thunderstorm WarningLWXFauquier55 min
Aug 27, 7:17 PM EDTSevere Thunderstorm WarningLWXCulpeper43 min
Aug 27, 7:24 PM EDTSpecial Marine WarningLWX66 min
Aug 27, 7:24 PM EDTSpecial Marine WarningLWX66 min
Aug 27, 7:24 PM EDTSpecial Marine WarningLWX51 min
Aug 27, 7:52 PM EDTSpecial Marine WarningLWX83 min
Aug 26, 11:11 PM EDTSevere Thunderstorm WarningLWXAllegany49 min
Aug 27, 11:05 AM EDTSevere Thunderstorm WarningLWXAllegany40 min
Aug 27, 4:03 PM EDTSevere Thunderstorm WarningLWXAllegany42 min
Aug 27, 6:31 PM EDTSevere Thunderstorm WarningLWXHoward, Montgomery29 min
Aug 27, 7:01 PM EDTSevere Thunderstorm WarningLWXMontgomery44 min
Aug 27, 7:09 PM EDTSevere Thunderstorm WarningLWXPrince George's51 min
Aug 26, 11:26 PM EDTSevere Thunderstorm WarningLWXGrant64 min
Aug 26, 11:52 PM EDTSevere Thunderstorm WarningLWXHardy38 min
Aug 27, 9:54 AM EDTSevere Thunderstorm WarningLWXGrant66 min
Aug 27, 4:39 PM EDTSevere Thunderstorm WarningLWXHampshire36 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2003Every severe thunderstorm warning in 2003

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.