Alert archive / Virginia / Wind Chill Advisories in 2007

Wind Chill Advisory 1, NWS Blacksburg, VA

January 25, 20079 counties in Virginia; Ashe County, Watauga County, North Carolina; Mercer County, Monroe County, Summers County, West Virginia

NWS Blacksburg, VA issued this wind chill advisory at Jan 25, 2007, 3:05 AM EST for 9 counties in Virginia; Ashe County, Watauga County, North Carolina; Mercer County, Monroe County, Summers County, West Virginia. It took effect at Jan 25, 2007, 3:58 PM EST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Jan 25, 2007, 3:05 AM EST (08:05 UTC)
In effect from
Jan 25, 2007, 3:58 PM EST
Expired
Jan 26, 2007, 9:00 AM EST
In force
17 hr
Issued by
NWS Blacksburg, VA

Counties Ashe County, NC, Watauga County, NC, Alleghany County, VA, Bath County, VA, Bland County, VA, City of Covington, VA, Craig County, VA, Giles County, VA, Grayson County, VA, Smyth County, VA, Tazewell County, VA, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 56 km from the middle of the area, began a volume at 08:07 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.1 hours before the alert went out and 155 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, Greensboro/Hi Pt, NC at 00:00Z on 2007-01-25Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2007-01-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939587897117Sfc1 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
1700 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
28 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 wind chill advisory 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 wind chill advisory went out at Jan 25, 12:45 AM EST, 2 hours 20 minutes earlier.

Area forecast discussion, Jan 25, 12:45 AM EST, 2 hours 20 minutes before
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Hazardous weather outlook, Jan 24, 4:18 PM EST, 10 hours 47 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BLACKSBURG VA
418 PM EST WED JAN 24 2007

WVZ045-251015-
GREENBRIER-
418 PM EST WED JAN 24 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST WEST
VIRGINIA.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ARCTIC AIR WILL SURGE INTO THE REGION THURSDAY AND PERSIST INTO
FRIDAY. ALONG WITH STRONG NORTHWEST WINDS...SNOW ACCUMULATIONS OF
1 TO 5 INCHES ARE EXPECTED...WITH LOCALLY HIGHER TOTALS ACROSS THE
HIGHER WESTERN MOUNTAINS. THESE WINDS MAY ALSO PRODUCE PERIODS OF
BLOWING SNOW INCLUDING WIND CHILLS AS COLD AS 10 BELOW ZERO BY
EARLY FRIDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED BUT SNOWFALL REPORTS ARE
REQUESTED.

VAZ007-009-010-020-WVZ042-043-251015-
TAZEWELL-SMYTH-BLAND-BATH-MERCER-SUMMERS-
418 PM EST WED JAN 24 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
VIRGINIA...WEST CENTRAL VIRGINIA AND SOUTHEAST WEST VIRGINIA.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ARCTIC AIR WILL SURGE ACROSS THE MOUNTAINS THURSDAY AND PERSIST
INTO FRIDAY. THIS WILL PRODUCE SNOW SHOWERS ACROSS THE REGION
ALONG WITH STRONG NORTHWEST WINDS LATER THURSDAY INTO THURSDAY
NIGHT. SNOWFALL ACCUMULATIONS OF 1 TO 3 INCHES ARE EXPECTED ALONG
WITH WIND GUSTS TO 40 MPH OR STRONGER. THESE WINDS MAY ALSO CAUSE
SOME BLOWING SNOW AS WELL AS WIND CHILLS NEAR 5 BELOW ZERO BY
EARLY FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED BUT SNOWFALL REPORTS ARE REQUESTED.

NCZ002-VAZ011>014-016>019-WVZ044-251015-
ALLEGHANY NC-GILES-WYTHE-PULASKI-MONTGOMERY-CARROLL-FLOYD-CRAIG-
ALLEGHANY VA-MONROE-
418 PM EST WED JAN 24 2007

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

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

MORE ARCTIC AIR WILL MOVE INTO THE REGION THURSDAY AND PERSIST
INTO FRIDAY. SCATTERED SNOW SHOWERS ARE EXPECTED LATER THURSDAY
INTO THURSDAY NIGHT ALONG WITH STRONG NORTHWEST WINDS. SNOWFALL
TOTALS OF UP TO AN INCH MAY OCCUR ON THE RIDGES ALONG WITH GUSTS
TO 45 MPH OR STRONGER ESPECIALLY THURSDAY NIGHT. IN ADDITION THE
WINDS WILL COMBINE WITH THE COLD TEMPERATURES TO PUSH WIND CHILL
VALUES TO NEAR 5 BELOW ZERO BY EARLY FRIDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

NCZ003>006-019-020-VAZ022>024-032>035-043>047-058-059-251015-
SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-ROANOKE-BOTETOURT-
ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-PITTSYLVANIA-
CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-
418 PM EST WED JAN 24 2007

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

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

MUCH COLDER AIR WILL SLIDE INTO THE REGION LATER THURSDAY AND
CONTINUE INTO FRIDAY. THIS IN COMBINATION WITH GUSTY NORTHWEST
WINDS MAY RESULT IN WIND CHILLS BETWEEN ZERO AND 10 ABOVE BY EARLY
FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

NCZ001-018-VAZ015-251015-
ASHE-WATAUGA-GRAYSON-
418 PM EST WED JAN 24 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST NORTH
CAROLINA AND SOUTHWEST VIRGINIA.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER SHOT OF ARCTIC AIR WILL PUSH INTO THE REGION THURSDAY AND
PERSIST INTO FRIDAY. ALONG WITH THE STRONG NORTHWEST WINDS...SNOWFALL
ACCUMULATIONS OF 1 TO 4 INCHES ARE EXPECTED...MAINLY ALONG THE
WESTERN SLOPES BY LATE THURSDAY NIGHT. NORTHWEST WINDS AT 20 TO 30
MPH INCLUDING GUSTS TO 50 MPH WILL ALSO MAKE FOR BLOWING SNOW
ACROSS THE RIDGES AS WELL AS WIND CHILLS NEAR 5 BELOW ZERO BY
EARLY FRIDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED BUT SNOWFALL REPORTS ARE REQUESTED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 25, 3:05 AM ESTWinter Weather AdvisoryRNKBland, Grayson, Smyth, Tazewell30 hr
Jan 25, 3:48 AM ESTWind AdvisoryRNKGrayson24 hr

Nearby

Wind Chill Advisories in Virginia, 2007Wind Chill Advisories in West Virginia, 2007Wind Chill Advisories in North Carolina, 2007Every wind chill advisory 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.