Alert archive / West Virginia / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 113, NWS Baltimore/Washington

July 18, 2006Pendleton County, West Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Jul 18, 2006, 4:06 PM EDT for Pendleton County, West Virginia. It was in force for 54 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
Jul 18, 2006, 4:06 PM EDT (20:06 UTC)
Expired
Jul 18, 2006, 5:00 PM EDT
In force
54 min
Issued by
NWS Baltimore/Washington
Area
Counties, with a storm outline in the text

County Pendleton County, WV

The radar

The Sterling radar (KLWX), 165 km from the middle of the area, began a volume at 20:09 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 12:00Z, 8.1 hours before the alert went out and 165 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 2006-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 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, Roanoke, VA at 12:00Z on 2006-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939Sfc1 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
6 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
1599 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 18, 2:45 PM EDT, 1 hour 21 minutes earlier.

Area forecast discussion, Jul 18, 2:45 PM EDT, 1 hour 21 minutes before
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Hazardous weather outlook, Jul 18, 3:22 PM EDT, 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
322 PM EDT TUE JUL 18 2006

ANZ530>537-DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ021-
025>031-036>042-050>057-WVZ048>055-191000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
DISTRICT OF COLUMBIA-ALLEGANY-WASHINGTON-FREDERICK MD-CARROLL-
NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-
PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-HIGHLAND-
AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-
NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN-
ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-GRANT-MINERAL-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-
PENDLETON-HARDY-
322 PM EDT TUE JUL 18 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE
EASTERN SHORE INCLUDING THE CHESAPEAKE BAY AND EAST OF GARRETT
COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND CENTRAL VIRGINIA...
WASHINGTON DC AND THE TIDAL POTOMAC RIVER.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A HEAT ADVISORY IS IN EFFECT FOR THE BALTIMORE AND WASHINGTON
METRO REGION...EAST OF THE BLUE RIDGE MOUNTAINS...AND LOWER
SOUTHERN MARYLAND UNTIL 8:00 PM EDT. HEAT INDEX VALUES AROUND 105
WILL BE POSSIBLE...ESPECIALLY DURING THE LATE AFTERNOON.

IN ADDITION...AS A COLD FRONT APPROACHES LATE IN THE DAY AND THIS
EVENING...A FEW THUNDERSTORMS MAY BECOME SEVERE. NORTHERN
MARYLAND AND A PORTION OF THE EASTERN WEST VIRGINIA PANHANDLE HAVE
BEEN OUTLOOKED AS HAVING A SLIGHT RISK OF SEVERE THUNDERSTORMS.
THE PRIMARY THREAT WITH THESE STORMS WILL BE LARGE HAIL AND DAMAGING
WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

TROPICAL DEPRESSION 2 HAS FORMED SOUTHEAST OF THE NORTH CAROLINA
COAST. IT IS POSSIBLE THAT THIS TROPICAL SYSTEM WILL TRACK INTO
THE LOWER CHESAPEAKE BAY ON THURSDAY...AND BRING TROPICAL STORM
FORCE WINDS INTO THE MARYLAND PORTION OF THE CHESAPEAKE BAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON.

SMITH

In the hours before

Special weather statement, Jul 18, 12:56 PM EDT, 3 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1256 PM EDT TUE JUL 18 2006

DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ026>031-037>042-
050>057-WVZ048>055-182300-
DISTRICT OF COLUMBIA-ALLEGANY-WASHINGTON-FREDERICK MD-CARROLL-
NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-
PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-ROCKINGHAM-
SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-ALBEMARLE-GREENE-
MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN-ORANGE-CULPEPER-
PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-GRANT-MINERAL-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-
PENDLETON-HARDY-
INCLUDING THE CITIES OF...WASHINGTON...CUMBERLAND...HAGERSTOWN...
FREDERICK...WESTMINSTER...GAITHERSBURG...COLUMBIA...BALTIMORE...
ANNAPOLIS...WALDORF...ST MARYS CITY...HARRISONBURG...WINCHESTER...
FRONT ROYAL...CHARLOTTESVILLE...LEESBURG...CULPEPER...MANASSAS...
MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH...
FREDERICKSBURG...BAYARD...PETERSBURG...KEYSER...MARTINSBURG...
CHARLES TOWN
1256 PM EDT TUE JUL 18 2006

...SLIGHT RISK FOR SEVERE STORMS LATE THIS AFTERNOON AND EVENING...

A COLD FRONT WILL MOVE INTO THE REGION THIS EVENING. DUE TO THE
APPROACH OF THE COLD FRONT...COMBINED WITH THE VERY HOT AND HUMID
AIRMASS REMAINING OVER THE MID ATLANTIC...THERE WILL BE THE
POTENTIAL FOR SEVERE THUNDERSTORMS.

THE MOST LIKELY TIME FOR SEVERE STORMS WOULD BE BETWEEN 5 PM AND
MIDNIGHT. THE PRIMARY THREAT WILL BE FROM DAMAGING WIND GUSTS.

SPOTTER ACTIVATION MAY BE REQUIRED LATE THIS AFTERNOON OR EVENING
ACROSS WESTERN MARYLAND AND THE EASTERN PANHANDLE OF WEST
VIRGINIA.

MONITOR NOAA WEATHER RADIO FOR THE LATEST INFORMATION...
FORECASTS AND POSSIBLE WATCHES OR WARNINGS.
Local storm report, Jul 18, 3:11 PM EDT, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
311 PM EDT TUE JUL 18 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0235 PM     HAIL             4 S UPPER TRACT         38.94N 79.13W
07/18/2006  E0.75 INCH       GRANT              WV   TRAINED SPOTTER

            THREE QUARTER INCH HAIL AT GRANT COUNTY AIRPORT.

0258 PM     HAIL             4 S PETERSBURG          38.94N 79.13W
07/18/2006  E1.75 INCH       GRANT              WV   TRAINED SPOTTER

            GOLFBALL SIZED HALL AON NORTH CREEK ROAD.

&&

CMEADOWS
Local storm report, Jul 18, 3:51 PM EDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
351 PM EDT TUE JUL 18 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0235 PM     HAIL             PETERSBURG GRANT AIRPOR 39.00N 79.15W
07/18/2006  E0.75 INCH       GRANT              WV   TRAINED SPOTTER

            THREE QUARTER INCH HAIL AT GRANT COUNTY AIRPORT.

&&

MANNING

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 3:42 PM EDTSevere Thunderstorm WarningLWXRockingham63 min
Jul 18, 4:16 PM EDTSevere Thunderstorm WarningLWXFrederick, Shenandoah59 min
Jul 18, 4:48 PM EDTSevere Thunderstorm WarningLWXRockingham57 min
Jul 18, 5:14 PM EDTSevere Thunderstorm WarningLWXShenandoah, Warren56 min
Jul 18, 5:40 PM EDTSevere Thunderstorm WarningLWXMadison, Page, Rappahannock65 min
Jul 18, 5:43 PM EDTSevere Thunderstorm WarningLWXRockingham, City of Harrisonburg25 min
Jul 18, 5:45 PM EDTSevere Thunderstorm WarningLWXFrederick, City of Winchester60 min
Jul 18, 7:00 PM EDTSpecial Marine WarningLWX2 hr
Jul 18, 4:17 PM EDTSevere Thunderstorm WarningLWXPrince George's28 min
Jul 18, 4:23 PM EDTSevere Thunderstorm WarningLWXAllegany, Washington52 min
Jul 18, 4:49 PM EDTSevere Thunderstorm WarningLWXPrince George's27 min
Jul 18, 5:57 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Washington63 min
Jul 18, 6:26 PM EDTSevere Thunderstorm WarningLWXAllegany49 min
Jul 18, 6:37 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford38 min
Jul 18, 7:06 PM EDTSevere Thunderstorm WarningLWXFrederick54 min
Jul 18, 7:15 PM EDTSevere Thunderstorm WarningLWXBaltimore45 min
Jul 18, 7:26 PM EDTSevere Thunderstorm WarningLWXCarroll, Howard40 min
Jul 18, 7:28 PM EDTSevere Thunderstorm WarningLWXHarford47 min
Jul 18, 2:30 PM EDTSevere Thunderstorm WarningLWXPendleton45 min
Jul 18, 2:40 PM EDTSevere Thunderstorm WarningLWXGrant, Hardy35 min
Jul 18, 3:14 PM EDTSevere Thunderstorm WarningLWXGrant, Hardy31 min
Jul 18, 4:57 PM EDTSevere Thunderstorm WarningLWXMorgan48 min
Jul 18, 5:09 PM EDTSevere Thunderstorm WarningLWXHampshire66 min
Jul 18, 6:23 PM EDTFlash Flood WarningLWXMorgan3 hr
Jul 18, 6:53 PM EDTSevere Thunderstorm WarningLWXBerkeley, Morgan67 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2006Every severe thunderstorm warning in 2006

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.