Alert archive / Virginia / Red Flag Warnings in 2007
Red Flag Warning 4, NWS Blacksburg, VA
NWS Blacksburg, VA issued this red flag warning at Apr 7, 2007, 4:46 AM EDT for 11 counties in Virginia; 6 counties in North Carolina. It took effect at Apr 7, 2007, 9:00 AM EDT. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 7, 2007, 4:46 AM EDT (08:46 UTC)
- In effect from
- Apr 7, 2007, 9:00 AM EDT
- Expired
- Apr 7, 2007, 8:31 PM EDT
- In force
- 12 hr
- Issued by
- NWS Blacksburg, VA
Counties Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Amherst County, VA, Bedford County, VA, Botetourt County, VA, City of Martinsville, VA, City of Roanoke, VA, City of Salem, VA, Franklin County, VA, Henry County, VA, Patrick County, VA, Roanoke County, VA, Rockbridge County, VA
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 8.8 hours before the alert went out and 56 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1153 m above ground
- 0-6 km bulk shear
- 101 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS81 KRNK 070846 RFWRNK RED FLAG WARNING NATIONAL WEATHER SERVICE BLACKSBURG VA 446 AM EDT SAT APR 7 2007 ...RED FLAG WARNING TODAY FOR SOUTHWEST VIRGINIA FOOTHILLS AND NORTHWESTERN NORTH CAROLINA FOOTHILLS AND PIEDMONT. ...FIRE WEATHER WATCH SUNDAY... .IN THE WAKE OF A LOW PRESSURE SYSTEM EXPECT GUSTY WEST WINDS AND LOW RELATIVE HUMIDITIES FOR PORTIONS OF SOUTHWEST VIRGINIA AND NORTHWEST NORTH CAROLINA THIS WEEKEND. NCZ003>006-019-020-VAZ022>024-032>035-043-071700- /O.NEW.KRNK.FW.W.0004.070407T1300Z-070408T0100Z/ /O.EXT.KRNK.FW.A.0003.070408T1200Z-070409T0000Z/ SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-ROANOKE-BOTETOURT- ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY- 446 AM EDT SAT APR 7 2007 ...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 9 PM EDT THIS EVENING... ...FIRE WEATHER WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 9 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING. THE CONTINUED DRY AIRMASS...WITH DAYTIME RELATIVE HUMIDITY VALUES LESS THAN 25 PERCENT...COMBINED WITH THE VERY DRY FUELS AS A RESULT FROM THE LACK OF SIGNIFICANT RAINFALL...WILL MAINTAIN A CRITICAL THREAT FOR BRUSH AND WILD FIRES THROUGH THE WEEKEND ACROSS MUCH OF SOUTHWEST VIRGINIA AND NORTHWEST NORTH CAROLINA. WIND SPEEDS WILL BE 15 TO 25 MPH THIS AFTERNOON AND AGAIN SUNDAY AFTERNOON. ALSO...PERIODIC GUSTS UP TO 30 MPH ARE POSSIBLE IN THE HIGHER TERRAIN. THIS WILL MAKE FOR DIFFICULT FIRE CONTROL SHOULD ANY FIRES DEVELOP. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. $$ NCZ001-002-018-VAZ009>020-044>047-058-059-071700- /O.EXT.KRNK.FW.A.0003.070408T1200Z-070409T0000Z/ ASHE-ALLEGHANY NC-WATAUGA-SMYTH-BLAND-GILES-WYTHE-PULASKI- MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH- PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE- 446 AM EDT SAT APR 7 2007 ...FIRE WEATHER WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... THE CONTINUED DRY AIRMASS...WITH DAYTIME RELATIVE HUMIDITY VALUES LESS THAN 25 PERCENT...COMBINED WITH THE VERY DRY FUELS AS A RESULT FROM THE LACK OF SIGNIFICANT RAINFALL...WILL MAINTAIN A CRITICAL THREAT FOR BRUSH AND WILD FIRES ON SUNDAY ACROSS MUCH OF SOUTHWEST VIRGINIA AND NORTHWEST NORTH CAROLINA. WIND SPEEDS WILL BE 15 TO 25 MPH SUNDAY AFTERNOON. ALSO...PERIODIC GUSTS UP TO 30 MPH ARE POSSIBLE IN THE HIGHER TERRAIN. THIS WILL MAKE FOR DIFFICULT FIRE CONTROL SHOULD ANY FIRES DEVELOP. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. $$ RCS
2 follow-up statements
000 WWUS81 KRNK 071623 RFWRNK RED FLAG WARNING NATIONAL WEATHER SERVICE BLACKSBURG VA 1223 PM EDT SAT APR 7 2007 ...RED FLAG WARNING TODAY FOR SOUTHWEST VIRGINIA FOOTHILLS AND NORTHWESTERN NORTH CAROLINA FOOTHILLS AND PIEDMONT. ...FIRE WEATHER WATCH SUNDAY... .IN THE WAKE OF A LOW PRESSURE SYSTEM EXPECT GUSTY WEST WINDS AND LOW RELATIVE HUMIDITIES FOR PORTIONS OF SOUTHWEST VIRGINIA AND NORTHWEST NORTH CAROLINA THIS WEEKEND. NCZ003>006-019-020-VAZ022>024-032>035-043-080030- /O.CON.KRNK.FW.W.0004.000000T0000Z-070408T0100Z/ /O.CON.KRNK.FW.A.0003.070408T1200Z-070409T0000Z/ SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-ROANOKE-BOTETOURT- ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY- 1223 PM EDT SAT APR 7 2007 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM EDT THIS EVENING. A FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING. THE CONTINUED DRY AIRMASS...WITH DAYTIME RELATIVE HUMIDITY VALUES LESS THAN 25 PERCENT...COMBINED WITH THE VERY DRY FUELS AS A RESULT FROM THE LACK OF SIGNIFICANT RAINFALL...WILL MAINTAIN A CRITICAL THREAT FOR BRUSH AND WILD FIRES THROUGH THE WEEKEND ACROSS MUCH OF SOUTHWEST VIRGINIA AND NORTHWEST NORTH CAROLINA. WIND SPEEDS WILL BE 15 TO 25 MPH THIS AFTERNOON AND AGAIN SUNDAY AFTERNOON. ALSO...PERIODIC GUSTS UP TO 30 MPH ARE POSSIBLE IN THE HIGHER TERRAIN. THIS WILL MAKE FOR DIFFICULT FIRE CONTROL SHOULD ANY FIRES DEVELOP. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. $$ NCZ001-002-018-VAZ009>020-044>047-058-059-080030- /O.CON.KRNK.FW.A.0003.070408T1200Z-070409T0000Z/ ASHE-ALLEGHANY NC-WATAUGA-SMYTH-BLAND-GILES-WYTHE-PULASKI- MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH- PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE- 1223 PM EDT SAT APR 7 2007 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... A FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING. WIND SPEEDS WILL BE 15 TO 25 MPH SUNDAY AFTERNOON. ALSO... PERIODIC GUSTS UP TO 30 MPH ARE POSSIBLE IN THE HIGHER TERRAIN. THIS WILL MAKE FOR DIFFICULT FIRE CONTROL SHOULD ANY FIRES DEVELOP. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. $$ WERT
000 WWUS81 KRNK 080031 RFWRNK RED FLAG WARNING NATIONAL WEATHER SERVICE BLACKSBURG VA 831 PM EDT SAT APR 7 2007 ...RED FLAG WARNING CANCELLED... ...FIRE WEATHER WATCH SUNDAY... .IN THE WAKE OF A LOW PRESSURE SYSTEM EXPECT GUSTY WEST WINDS AND LOW RELATIVE HUMIDITIES FOR PORTIONS OF SOUTHWEST VIRGINIA AND NORTHWEST NORTH CAROLINA SUNDAY. NCZ003>006-019-020-VAZ022>024-032>035-043-080845- /O.CAN.KRNK.FW.W.0004.000000T0000Z-070408T0100Z/ /O.CON.KRNK.FW.A.0003.070408T1200Z-070409T0000Z/ SURRY-STOKES-ROCKINGHAM-CASWELL-WILKES-YADKIN-ROANOKE-BOTETOURT- ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY- 831 PM EDT SAT APR 7 2007 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM 8 AM EDT SUNDAY THROUGH SUNDAY EVENING... ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS CANCELLED THE RED FLAG WARNING. A FIRE WEATHER WATCH REMAINS IN EFFECT FROM 8 AM EDT SUNDAY THROUGH SUNDAY EVENING. WIND SPEEDS AND DIMINISHED AND RELATIVE HUMIDITIES HAVE CLIMBED ABOVE 25 PERCENT THIS EVENING. AS A RESULT...THE RED FLAG WARNING HAS BEEN CANCELLED FOR TODAY. WIND SPEEDS WILL ONCE AGAIN INCREASE SUNDAY AFTERNOON TO 15 TO 25 MPH...MAKING FOR DIFFICULT FIRE CONTROL SHOULD ANY FIRES DEVELOP. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. $$ NCZ001-002-018-VAZ009>020-044>047-058-059-080845- /O.CON.KRNK.FW.A.0003.070408T1200Z-070409T0000Z/ ASHE-ALLEGHANY NC-WATAUGA-SMYTH-BLAND-GILES-WYTHE-PULASKI- MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH- PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE- 831 PM EDT SAT APR 7 2007 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM 8 AM EDT SUNDAY THROUGH SUNDAY EVENING... A FIRE WEATHER WATCH REMAINS IN EFFECT FROM 8 AM EDT SUNDAY THROUGH SUNDAY EVENING. WIND SPEEDS WILL BE 15 TO 25 MPH SUNDAY AFTERNOON. ALSO... PERIODIC GUSTS UP TO 30 MPH ARE POSSIBLE IN THE HIGHER TERRAIN. THIS WILL MAKE FOR DIFFICULT FIRE CONTROL SHOULD ANY FIRES DEVELOP. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. $$
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 9:28 PM EDT | Freeze Warning | RNK | Alleghany, Amherst, Bedford, Botetourt, Franklin, Henry and 9 more | 12 hr |
| Apr 7, 4:32 AM EDT | Freeze Warning | RNK | Alleghany, Amherst, Appomattox, Bedford, Botetourt, Buckingham and 17 more | 29 hr |
| Apr 7, 3:47 PM EDT | Freeze Watch | RNK | Alleghany, Amherst, Appomattox, Bedford, Botetourt, Buckingham and 17 more | 12 hr |
Nearby
Red Flag Warnings in Virginia, 2007Red Flag Warnings in North Carolina, 2007Every red flag 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.