Alert archive / North Carolina / Red Flag Warnings in 2011

Red Flag Warning 4, NWS Greenville-Spartanburg, SC

March 23, 201128 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this red flag warning at Mar 23, 2011, 2:54 AM EDT for 28 counties in North Carolina. It took effect at Mar 23, 2011, 8:00 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
Mar 23, 2011, 2:54 AM EDT (06:54 UTC)
In effect from
Mar 23, 2011, 8:00 AM EDT
Expired
Mar 23, 2011, 8:00 PM EDT
In force
12 hr
Issued by
NWS Greenville-Spartanburg, SC
All 28 counties

Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 80 km from the middle of the area, began a volume at 06:55 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, 6.9 hours before the alert went out and 190 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 2011-03-23Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 2011-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.1939587897Sfc1 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
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

619 
WWUS82 KGSP 230654
RFWGSP

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
254 AM EDT WED MAR 23 2011

NCZ033-035>037-048>053-056>059-062>065-068>072-082-303-501>510-
231600-
/O.UPG.KGSP.FW.A.0004.110323T1200Z-110324T0000Z/
/O.NEW.KGSP.FW.W.0004.110323T1200Z-110324T0000Z/
AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-
HAYWOOD-BUNCOMBE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-MACON-
SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-
NORTH CAROLINA PORTION OF GREAT SMOKY MOUNTAINS NATIONAL PARK-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-
254 AM EDT WED MAR 23 2011

...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A RED FLAG WARNING...WHICH IS IN EFFECT FROM 8 AM THIS MORNING TO
8 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN
EFFECT. 

* LOCATIONS...WESTERN NORTH CAROLINA.

* TIMING...WINDS WILL BECOME GUSTY BY MID MORNING...WITH GUSTS
  INCREASING THROUGH THE AFTERNOON HOURS. RELATIVE HUMIDITY VALUES
  WILL APPROACH CRITICAL LEVELS FROM MID TO LATE AFTERNOON.

* WINDS...SOUTHWEST TO WEST WINDS WILL INCREASE TO 15 TO 25 MPH.
  WIND GUSTS ARE EXPECTED TO REACH 25 TO 35 MPH THIS
  AFTERNOON...WITH A FEW GUSTS NEAR 40 MPH.

* HUMIDITY...AFTERNOON HUMIDITY VALUES SHOULD FALL TO BETWEEN 25
  AND 30 PERCENT ACROSS THE FOOTHILLS AND PIEDMONT THIS AFTERNOON.
  VALUES WILL LIKELY DIP TO BETWEEN 30 AND 40 PERCENT ACROSS MOST
  OF THE MOUNTAINS.

* FUEL MOISTURE...FUEL MOISTURE IS ALREADY LOW...WITH ADDITIONAL
  CRITICAL DRYING EXPECTED TODAY DUE TO THE GUSTY WINDS.

* THUNDERSTORMS...SCATTERED TO NUMEROUS THUNDERSTORMS MAY DEVELOP
  FROM THE WEST FROM LATE AFTERNOON THROUGH THE EVENING HOURS.

* IMPACTS...CONDITIONS WILL BE FAVORABLE FOR THE RAPID DEVELOPMENT
  AND SPREAD OF WILDFIRES.

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.

&&

$$

GERAPETRITIS
1 follow-up statement
953 
WWUS82 KGSP 231644
RFWGSP

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1244 PM EDT WED MAR 23 2011

NCZ033-035>037-048>053-056>059-062>065-068>072-082-303-501>510-
240000-
/O.CON.KGSP.FW.W.0004.000000T0000Z-110324T0000Z/
AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-
HAYWOOD-BUNCOMBE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-MACON-
SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-
NORTH CAROLINA PORTION OF GREAT SMOKY MOUNTAINS NATIONAL PARK-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-
1244 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.

* LOCATIONS...WESTERN NORTH CAROLINA.

* TIMING...WINDS WILL REMAIN GUSTY...WITH GUSTS INCREASING
  THROUGH THE AFTERNOON HOURS. RELATIVE HUMIDITY VALUES WILL
  APPROACH CRITICAL LEVELS FROM MID TO LATE AFTERNOON.

* WINDS...SOUTHWEST TO WEST WINDS WILL INCREASE TO 15 TO 25 MPH. 
  WIND GUSTS ARE EXPECTED TO REACH 25 TO 35 MPH THIS AFTERNOON...
   WITH A FEW GUSTS NEAR 40 MPH. 

* HUMIDITY...AFTERNOON HUMIDITY VALUES SHOULD FALL TO BETWEEN 25 
  AND 30 PERCENT ACROSS THE FOOTHILLS AND PIEDMONT THIS 
  AFTERNOON. VALUES WILL LIKELY DIP TO BETWEEN 30 AND 40 PERCENT 
  ACROSS MOST OF THE MOUNTAINS. 

* FUEL MOISTURE...FUEL MOISTURE IS ALREADY LOW...WITH ADDITIONAL 
  CRITICAL DRYING EXPECTED TODAY DUE TO THE GUSTY WINDS. 

* THUNDERSTORMS...SCATTERED TO NUMEROUS THUNDERSTORMS MAY 
  DEVELOP FROM THE WEST FROM LATE AFTERNOON THROUGH THE EVENING 
  HOURS. 

* IMPACTS...CONDITIONS WILL BE FAVORABLE FOR THE RAPID 
  DEVELOPMENT AND SPREAD OF WILDFIRES. 

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.

&&

$$

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 23, 2:45 AM EDTLake Wind AdvisoryGSPAlexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 22 more24 hr
Mar 23, 5:29 PM EDTSpecial Weather StatementGSPMadison, Yancey46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.