Alert archive / Virginia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 234, NWS Blacksburg, VA

July 27, 2007Craig County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 27, 2007, 1:00 AM EDT for Craig County, Virginia. It was in force for 25 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 27, 2007, 1:00 AM EDT (05:00 UTC)
Expired: Jul 27, 2007, 1:25 AM EDT
In force: 25 min
Issued by: NWS Blacksburg, VA
Area: Counties, with a storm outline in the text

County Craig County, VA

The radar

The Roanoke radar (KFCX), 51 km from the middle of the area, began a volume at 05:03 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, 5.0 hours before the alert went out and 70 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1555 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

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 Blacksburg, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 11:34 PM EDT, 1 hour 26 minutes earlier.

Area forecast discussion, Jul 26, 11:34 PM EDT, 1 hour 26 minutes before

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Hazardous weather outlook, Jul 26, 2:59 PM EDT, 10 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
259 PM EDT THU JUL 26 2007

NCZ003>006-019-020-VAZ011-013-014-016>018-022>024-032>035-043>047-
058-059-271900-
SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-GILES-PULASKI-
MONTGOMERY-CARROLL-FLOYD-CRAIG-ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-
FRANKLIN-BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-
BUCKINGHAM-HALIFAX-CHARLOTTE-
259 PM EDT THU JUL 26 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH
CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH
CENTRAL VIRGINIA...SOUTHWEST VIRGINIA AND WEST CENTRAL VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME...ALTHOUGH ISOLATED
THUNDERSTORMS LATE THIS AFTERNOON AND THIS EVENING COULD BE
STRONG.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

NCZ001-002-018-VAZ007-009-010-012-015-019-020-WVZ042>045-271900-
ASHE-ALLEGHANY NC-WATAUGA-TAZEWELL-SMYTH-BLAND-WYTHE-GRAYSON-
ALLEGHANY VA-BATH-MERCER-SUMMERS-MONROE-GREENBRIER-
259 PM EDT THU JUL 26 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST NORTH
CAROLINA...SOUTHWEST VIRGINIA...WEST CENTRAL VIRGINIA AND SOUTHEAST
WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING. THE PRIMARY THREAT FROM THESE STORMS WILL BE LARGE HAIL
AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EARLY EVENING.

In the hours before

Special weather statement, Jul 26, 9:43 PM EDT, 3 hours 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
943 PM EDT THU JUL 26 2007

WVZ042>045-270430-
MERCER-SUMMERS-MONROE-GREENBRIER-
INCLUDING THE CITIES OF...BLUEFIELD...HINTON...UNION...LEWISBURG
943 PM EDT THU JUL 26 2007

...LINE OF STRONG THUNDERSTORMS MOVING TOWARDS FAR SOUTHEAST WEST VIRGINIA...

AROUND 1100 PM TO 1130 PM...STRONG THUNDERSTORMS WILL BE NEAR A
LINE FROM CAMP CREEK STATE PARK...TO PIPESTEM STATE PARK...TO
HINTON...TO RAINELLE AND TROUT WEST VIRGINIA. THE APPROACHING LINE
OF STORMS HAS HAD A HISTORY OF LARGE HAIL AND DAMAGING WINDS. IF
THE STORMS MAINTAIN THEIR INTENSITY AS THEY PROGRESS INTO THE
REGION...SEVERE THUNDERSTORM WARNINGS MAY NEED TO BE ISSUED.

DS

Special weather statement, Jul 26, 10:28 PM EDT, 2 hours 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1028 PM EDT THU JUL 26 2007

WVZ042>045-270330-
MERCER WV-MONROE WV-GREENBRIER WV-SUMMERS WV-
1028 PM EDT THU JUL 26 2007

AT 1025 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTH OF
RICHWOOD TO 7 MILES SOUTHEAST OF PINEVILLE...MOVING EAST AT 25 MPH.

THE LINE OF STRONG THUNDERSTORMS WILL BE NEAR...QUINWOOD AT 1035 PM
EDT...RAINELLE AT 1040 PM EDT...RUPERT...AT 1050 PM EDT...CAMP CREEK
STATE PARK...SANDSTONE AT 1055 PM EDT...AND EVENTUALLY MOVE INTO THE
LEWISBURG AND UNION AREAS BETWEEN 11:00 PM AND MIDNIGHT.

WITH THE PASSAGE OF THIS LINE OF STORMS EXPECT WIND GUSTS TO 35
MILES AN HOUR...A HEAVY DOWNPOUR OF RAIN...AND FREQUENT CLOUD TO
GROUND LIGHTNING.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR
UPDATES ON THIS DEVELOPING SITUATION.

11

Local storm report, Jul 26, 10:47 PM EDT, 2 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1047 PM EDT THU JUL 26 2007

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

1043 PM     HAIL             RAINELLE                37.97N 80.78W
07/26/2007  E0.75 INCH       GREENBRIER         WV   PUBLIC

&&

MATTAROCHIA

Local storm report, Jul 26, 10:55 PM EDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1055 PM EDT THU JUL 26 2007

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

1054 PM     HAIL             RAINELLE                37.97N 80.78W
07/26/2007  E1.00 INCH       GREENBRIER         WV   PUBLIC

            HAIL FROM DIME SIZE TO QUARTER SIZE.

&&

MATTAROCHIA

Special weather statement, Jul 27, 12:55 AM EDT, 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 11:33 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, City of Covington	55 min
Jul 27, 1:26 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, City of Radford	55 min
Jul 27, 1:37 PM EDT	Severe Thunderstorm Warning	RNK	Giles	48 min
Jul 27, 1:42 PM EDT	Severe Thunderstorm Warning	RNK	Patrick	78 min
Jul 27, 2:40 PM EDT	Severe Thunderstorm Warning	RNK	Roanoke, City of Roanoke, City of Salem	47 min
Jul 27, 2:47 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	58 min
Jul 27, 3:29 PM EDT	Severe Thunderstorm Warning	RNK	Bedford	76 min
Jul 27, 4:37 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	38 min
Jul 27, 4:42 PM EDT	Severe Thunderstorm Warning	RNK	Bath	63 min
Jul 27, 4:50 PM EDT	Severe Thunderstorm Warning	RNK	Halifax	69 min
Jul 27, 5:01 PM EDT	Severe Thunderstorm Warning	RNK	Campbell, Charlotte	62 min
Jul 27, 4:56 PM EDT	Severe Thunderstorm Warning	RNK	Surry	52 min
Jul 27, 5:13 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	31 min
Jul 26, 10:39 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier	81 min
Jul 26, 10:47 PM EDT	Severe Thunderstorm Warning	RNK	Summers	73 min
Jul 26, 11:01 PM EDT	Severe Thunderstorm Warning	RNK	Mercer	37 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2007 Every severe thunderstorm warning in 2007

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.