Alert archive / North Carolina / Red Flag Warnings in 2011
Red Flag Warning 3, NWS Blacksburg, VA
NWS Blacksburg, VA issued this red flag warning at Mar 23, 2011, 4:11 AM EDT for 9 counties in North Carolina. It took effect at Mar 23, 2011, 9:00 AM EDT. It was in force for 10 hr. 9 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 23, 2011, 4:11 AM EDT (08:11 UTC)
- In effect from
- Mar 23, 2011, 9:00 AM EDT
- Expired
- Mar 23, 2011, 6:43 PM EDT
- In force
- 10 hr
- Issued by
- NWS Blacksburg, VA
Counties Alleghany County, NC, Ashe County, NC, Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC
The radar
The Roanoke radar (KFCX), 84 km from the middle of the area, began a volume at 08:09 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 23, 5:30 PM EDT | HAIL 1 | 1 Nnw Boone, NC | |
| Mar 23, 5:46 PM EDT | TSTM WND DMG | 3 Ne Elkville, NC | POWER LINES DOWN |
| Mar 23, 6:00 PM EDT | TSTM WND DMG | Mount Airy, NC | NUMEROUS TREES AND POWER LINES DOWN |
| Mar 23, 6:03 PM EDT | TSTM WND DMG | 5 Wnw Danbury, NC | TREE DOWN |
| Mar 23, 6:06 PM EDT | TSTM WND DMG | 2 N Francisco, NC | TREE DOWN NEAR COLLINSTOWN ROAD AND ELECTRIC PLANT ROAD |
| Mar 23, 6:14 PM EDT | TSTM WND DMG | 2 Nne Danbury, NC | TREE DOWN NEAR SEVEN ISLAND ROAD AND DAMASCAS ROAD |
| Mar 23, 6:18 PM EDT | TSTM WND DMG | Stoneville, NC | POWERLINES REPORTED DOWN IN THE COMMUNITY OF STONEVILLE. |
| Mar 23, 6:27 PM EDT | TSTM WND DMG | 6 Wsw Walnut Cove, NC | TREE DOWN ALONG HIGHWAY 8 |
| Mar 23, 6:40 PM EDT | TSTM WND DMG | 2 Nne Reidsville, NC | RADIO TOWER FELL OVER ON POWER LINES AND A BUILDING ON MADISON STREET NEAR BUSINESS U.S. 29 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.2 hours before the alert went out and 77 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
- 2057 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
021 WWUS81 KRNK 230811 RFWRNK URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 411 AM EDT WED MAR 23 2011 NCZ001>006-018>020-231615- /O.UPG.KRNK.FW.A.0003.110323T1300Z-110324T0000Z/ /O.NEW.KRNK.FW.W.0003.110323T1300Z-110324T0000Z/ ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES- YADKIN- 411 AM EDT WED MAR 23 2011 ...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 8 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * TIMING...CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE LATE THIS MORNING UNTIL EARLY THIS EVENING. * WIND...SOUTHWEST WINDS INCREASING 15 TO 20 MPH...WITH GUSTS UP TO 30 MPH IN THE AFTERNOON. * HUMIDITY...DROPPING TO AROUND 30 PERCENT IN THE AFTERNOON. * TEMPERATURES: HIGH TEMPERATURES FROM THE MID 70S IN THE MOUNTAINS...TO THE LOWER OR MID 80S IN THE PIEDMONT. * IMPACTS...LACK OF RAINFALL HAS ALLOWED FUEL MOISTURES TO DRY OUT ACROSS NORTH CAROLINA. THE COMBINATION OF STRONG WINDS AND LOWER HUMIDITY WILL LIKELY CREATE RED FLAG CONDITIONS. ALSO...SOME THUNDERSTORMS LATE IN THE DAY WILL CREATE ERRATIC WIND BEHAVIOR...ESPECIALLY IN THE MOUNTAINS. ANY FIRES THAT OCCUR ARE LIKELY TO QUICKLY SPREAD OUT OF CONTROL. PRECAUTIONARY/PREPAREDNESS ACTIONS... && PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
2 follow-up statements
688 WWUS81 KRNK 231724 RFWRNK URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 124 PM EDT WED MAR 23 2011 NCZ001>006-018>020-240000- /O.CON.KRNK.FW.W.0003.000000T0000Z-110324T0000Z/ ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES- YADKIN- 124 PM EDT WED MAR 23 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE LATE THIS MORNING UNTIL EARLY THIS EVENING. * WIND...SOUTHWEST WINDS INCREASING 15 TO 20 MPH...WITH GUSTS UP TO 30 MPH IN THE AFTERNOON. * HUMIDITY...DROPPING TO AROUND 30 PERCENT IN THE AFTERNOON. * TEMPERATURES: HIGH TEMPERATURES FROM THE MID 70S IN THE MOUNTAINS...TO THE LOWER OR MID 80S IN THE PIEDMONT. * IMPACTS...LACK OF RAINFALL HAS ALLOWED FUEL MOISTURES TO DRY OUT ACROSS NORTH CAROLINA. THE COMBINATION OF STRONG WINDS AND LOWER HUMIDITY WILL LIKELY CREATE RED FLAG CONDITIONS. ALSO... SOME THUNDERSTORMS LATE IN THE DAY WILL CREATE ERRATIC WIND BEHAVIOR...ESPECIALLY IN THE MOUNTAINS. ANY FIRES THAT OCCUR ARE LIKELY TO QUICKLY SPREAD OUT OF CONTROL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
184 WWUS81 KRNK 232243 RFWRNK URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BLACKSBURG VA 643 PM EDT WED MAR 23 2011 ...THE RED FLAG WARNING IS CANCELLED FOR THE MOUNTAINS AND FOOTHILLS OF NORTH CAROLINA AS WELL AS THE UPPER PIEDMONT REGION... NCZ001>006-018>020-232345- /O.CAN.KRNK.FW.W.0003.000000T0000Z-110324T0000Z/ ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES- YADKIN- 643 PM EDT WED MAR 23 2011 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS CANCELLED THE RED FLAG WARNING FOR THEIR AREA. A LINE OF THUNDERSTORMS PRODUCING HEAVY RAIN HAS MOVED ACROSS THE MOUNTAINS AND FOOTHILLS OF NORTH CAROLINA...AS WELL AS THE PIEDMONT REGION. THIS HEAVY RAIN...ALONG WITH FALLING TEMPERATURES AND RISING RELATIVE HUMIDITIES...WILL END RED FLAG CONDITIONS ACROSS THIS AREA. $$ 16
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 5:18 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Ashe, Watauga, Wilkes | 57 min |
| Mar 23, 5:36 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Stokes, Surry, Wilkes, Yadkin | 54 min |
| Mar 23, 6:32 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 58 min |
Nearby
Red Flag Warnings in North Carolina, 2011Every red flag warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.