Alert archive / Virginia / Wind Advisories in 2008

Wind Advisory 21, NWS Blacksburg, VA

September 25, 200819 counties in Virginia

NWS Blacksburg, VA issued this wind advisory at Sep 25, 2008, 3:38 AM EDT for 19 counties in Virginia. It took effect at Sep 25, 2008, 12:00 PM EDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Sep 25, 2008, 3:38 AM EDT (07:38 UTC)
In effect from
Sep 25, 2008, 12:00 PM EDT
Expired
Sep 26, 2008, 12:00 AM EDT
In force
12 hr
Issued by
NWS Blacksburg, VA

Counties Alleghany County, VA, Amherst County, VA, Bath County, VA, Bedford County, VA, Botetourt County, VA, Carroll County, VA, City of Buena Vista, VA, City of Covington, VA, City of Galax, VA, City of Lexington, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Franklin County, VA, Montgomery County, VA, Patrick County, VA, Roanoke County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 46 km from the middle of the area, began a volume at 07:40 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, 7.6 hours before the alert went out and 45 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 2008-09-25Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2008-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
1572 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
64 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.

000 
WWUS71 KRNK 250738
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
338 AM EDT THU SEP 25 2008

...STRONG NORTHEAST WINDS THIS AFTERNOON AND EVENING...

.THE COMBINATION OF A STRONG HIGH PRESSURE SYSTEM OFF THE
NORTHEAST U.S. COAST...AND A DEEPENING LOW PRESSURE SYSTEM OFF THE
CAROLINA COAST...WILL PRODUCE A PERIOD OF STRONG NORTHEAST WINDS
ACROSS THE AREA THIS AFTERNOON AND EVENING. ELEVATIONS ABOVE 2500
FEET MAY SEE WIND GUSTS UP TO 50 MPH.

VAZ014-016>020-022>024-032>035-251545-
/O.NEW.KRNK.WI.Y.0021.080925T1600Z-080926T0400Z/
MONTGOMERY-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-
BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-
INCLUDING THE CITIES OF...RADFORD...BLACKSBURG...GALAX...FLOYD...
NEW CASTLE...CLIFTON FORGE...HOT SPRINGS...SALEM...FINCASTLE...
LEXINGTON...STUART...ROCKY MOUNT...BEDFORD...AMHERST
338 AM EDT THU SEP 25 2008

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO MIDNIGHT EDT
TONIGHT ABOVE 2500 FEET...

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO MIDNIGHT EDT
TONIGHT. 

NORTHEAST WINDS WILL INCREASE TO 15 TO 30 MPH ACROSS THE AREA BY
LATE AFTERNOON. ELEVATIONS ABOVE 2500 FEET MAY SEE GUSTS AS HIGH
AS 50 MPH. THE WINDS WILL BEGIN TO DIMINISH BY MID EVENING AS
STEADY RAIN MOVES INTO THE AREA. 

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 31 TO 39 MPH ARE
POSSIBLE WITH GUSTS AS HIGH AS 57 MPH. WINDS THIS STRONG MAY DOWN
TREES...ESPECIALLY SINCE THE FOLIAGE IS STILL ON THEM. WINDS THIS
STRONG CAN ALSO MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

 

$$
3 follow-up statements
000 
WWUS71 KRNK 251446
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
1046 AM EDT THU SEP 25 2008

...STRONG NORTHEAST WINDS THIS AFTERNOON AND EVENING...

.THE COMBINATION OF A STRONG HIGH PRESSURE SYSTEM OFF THE
NORTHEAST U.S. COAST...AND A DEEPENING LOW PRESSURE SYSTEM OFF
THE CAROLINA COAST...WILL PRODUCE A PERIOD OF STRONG NORTHEAST
WINDS ACROSS THE AREA THIS AFTERNOON AND EVENING. ELEVATIONS
ABOVE 2500 FEET MAY SEE WIND GUSTS UP TO 50 MPH.

VAZ014-016>020-022>024-032>035-252300-
/O.CON.KRNK.WI.Y.0021.080925T1600Z-080926T0400Z/
MONTGOMERY-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-
BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-
INCLUDING THE CITIES OF...RADFORD...BLACKSBURG...GALAX...FLOYD...
NEW CASTLE...CLIFTON FORGE...HOT SPRINGS...SALEM...FINCASTLE...
LEXINGTON...STUART...ROCKY MOUNT...BEDFORD...AMHERST
1046 AM EDT THU SEP 25 2008

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
FOR ELEVATIONS ABOVE 2500 FEET...

A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. 

NORTHEAST WINDS WILL INCREASE TO 15 TO 30 MPH ACROSS THE AREA BY
LATE AFTERNOON. ELEVATIONS ABOVE 2500 FEET MAY SEE GUSTS AS HIGH
AS 50 MPH. THE WINDS WILL BEGIN TO DIMINISH BY MID EVENING AS
STEADY RAIN MOVES INTO THE AREA.

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 31 TO 39 MPH ARE
POSSIBLE WITH GUSTS AS HIGH AS 57 MPH. WINDS THIS STRONG MAY DOWN
TREES...ESPECIALLY SINCE THE FOLIAGE IS STILL ON THEM. WINDS THIS
STRONG CAN ALSO MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

$$
000 
WWUS71 KRNK 252242
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
642 PM EDT THU SEP 25 2008

...STRONG NORTHEAST WINDS THIS EVENING...

.THE COMBINATION OF A STRONG HIGH PRESSURE SYSTEM OFF THE
NORTHEAST U.S. COAST...AND A DEEPENING LOW PRESSURE SYSTEM OFF
THE CAROLINA COAST...WILL PRODUCE A PERIOD OF STRONG NORTHEAST
WINDS ACROSS THE AREA THIS EVENING. ELEVATIONS ABOVE 2500 FEET
MAY SEE WIND GUSTS UP TO 50 MPH.

VAZ014-016>020-022>024-032>035-260400-
/O.CON.KRNK.WI.Y.0021.000000T0000Z-080926T0400Z/
MONTGOMERY-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-
BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-
INCLUDING THE CITIES OF...RADFORD...BLACKSBURG...GALAX...FLOYD...
NEW CASTLE...CLIFTON FORGE...HOT SPRINGS...SALEM...FINCASTLE...
LEXINGTON...STUART...ROCKY MOUNT...BEDFORD...AMHERST
642 PM EDT THU SEP 25 2008

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT 
FOR ELEVATIONS ABOVE 2500 FEET...

A WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT. 

EXPECT NORTHEAST WINDS OF 15 TO 30 MPH ACROSS THE AREA.
ELEVATIONS ABOVE 2500 FEET MAY SEE GUSTS AS HIGH AS 50 MPH. THE
WINDS WILL BEGIN TO DIMINISH BY MID EVENING AS STEADY RAIN MOVES
INTO THE AREA.

A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 31 TO 39 MPH ARE
POSSIBLE WITH GUSTS AS HIGH AS 57 MPH. WINDS THIS STRONG MAY BLOW DOWN
TREES...ESPECIALLY SINCE THE FOLIAGE IS STILL ON THEM. WINDS THIS
STRONG CAN ALSO MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION. IF DRIVING ALONG INTERSTATE
77 NEAR FANCY GAP...BE PREPARED FOR VERY GUSTY WINDS.

$$
000 
WWUS71 KRNK 260350
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
1150 PM EDT THU SEP 25 2008



VAZ014-016>020-022>024-032>035-260500-
/O.EXP.KRNK.WI.Y.0021.000000T0000Z-080926T0400Z/
MONTGOMERY-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-
BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-
INCLUDING THE CITIES OF...RADFORD...BLACKSBURG...GALAX...FLOYD...
NEW CASTLE...CLIFTON FORGE...HOT SPRINGS...SALEM...FINCASTLE...
LEXINGTON...STUART...ROCKY MOUNT...BEDFORD...AMHERST
1150 PM EDT THU SEP 25 2008

...WIND ADVISORY WILL EXPIRE AT MIDNIGHT EDT TONIGHT...

THE WIND ADVISORY WILL EXPIRE AT MIDNIGHT EDT TONIGHT. 

WIND GUSTS TO ADVISORY LEVELS SUBSIDED THURSDAY
EVENING...THEREFORE...THE WIND ADVISORY WILL BE ALLOWED TO EXPIRE
AT MIDNIGHT. HOWEVER...SHOWERS WILL BE MOVING ACROSS THE AREA
THROUGH THE OVERNIGHT AND GUST AS HIGH AS 40 MPH CAN STILL BE
EXPECTED...ESPECIALLY ALONG THE HIGHER TERRAIN OF THE BLUE RIDGE.

$$

Nearby

Wind Advisories in 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.