Alert archive / North Carolina / Red Flag Warnings in 2012

Red Flag Warning 3, NWS Raleigh, NC

April 10, 201231 counties in North Carolina

NWS Raleigh, NC issued this red flag warning at Apr 10, 2012, 3:55 AM EDT for 31 counties in North Carolina. It took effect at Apr 10, 2012, 12:00 PM EDT. It was in force for 8 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 10, 2012, 3:55 AM EDT (07:55 UTC)
In effect from
Apr 10, 2012, 12:00 PM EDT
Expired
Apr 10, 2012, 8:00 PM EDT
In force
8 hr
Issued by
NWS Raleigh, NC
All 31 counties

Alamance County, NC, Anson County, NC, Chatham County, NC, Cumberland County, NC, Davidson County, NC, Durham County, NC, Edgecombe County, NC, Forsyth County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Halifax County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Sampson County, NC, Scotland County, NC, Stanly County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wayne County, NC, Wilson County, NC

The radar

The Raleigh/Durham radar (KRAX), 45 km from the middle of the area, began a volume at 07:57 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, 7.9 hours before the alert went out and 93 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 2012-04-10Temperature 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 2012-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
3232 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
224 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.

717 
WWUS82 KRAH 100755
RFWRAH

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RALEIGH NC
355 AM EDT TUE APR 10 2012

...RED FLAG WARNING HAS BEEN ISSUED FOR ALL OF CENTRAL NC
FROM NOON TO 8 PM EDT THIS EVENING...

A DEEPENING LOW PRESSURE TROUGH OVER THE EASTERN UNITED STATES WILL
RESULT IN DRY BREEZY CONDITIONS ACROSS THE REGION THIS AFTERNOON
AND EVENING. WESTERLY WIND GUSTS OF 25 TO 35 MPH ARE EXPECTED TO
DEVELOP ACROSS CENTRAL NC. THESE STRONG WINDS COMBINED WITH 
LOW RELATIVE HUMIDITY WILL CREATE CRITICAL FIRE WEATHER
CONDITIONS.

NCZ007>011-021>028-038>043-073>078-083>086-088-089-110000-
/O.UPG.KRAH.FW.A.0003.120410T1600Z-120411T0000Z/
/O.NEW.KRAH.FW.W.0003.120410T1600Z-120411T0000Z/
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-
WAKE-JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-
ANSON-RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
355 AM EDT TUE APR 10 2012

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR ALL OF CENTRAL
NC. 

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT
FROM NOON TODAY TO 8 PM EDT THIS EVENING. THE FIRE WEATHER WATCH
IS NO LONGER IN EFFECT. 

* AFFECTED AREA...ALL OF CENTRAL NC.

* TIMING...NOON TO 8 PM EDT THIS EVENING. 

* WINDS...SUSTAINED WINDS OF 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...20 TO 25 PERCENT. 

* TREE LITTER AND OTHER FINE FUELS...WILL DRY OUT QUICKLY. 

* TEMPERATURES...WILL RANGE FROM THE LOWER 70S ACROSS THE NORTH TO
  MID AND UPPER 70S ACROSS THE SOUTH.

* IMPACTS...THE COMBINATION OF STRONG WINDS AND LOW RELATIVE
  HUMIDITY WILL CREATE FAVORABLE CONDITIONS FOR FIRES TO RAPIDLY
  SPREAD. ANY OUTDOOR...OPEN BURNING IS CONSIDERED HAZARDOUS AT THIS
  TIME AND SHOULD BE POSTPONED. 

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.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/RALEIGH (ALL LOWER CASE)
1 follow-up statement
631 
WWUS82 KRAH 110001
RFWRAH

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RALEIGH NC
801 PM EDT TUE APR 10 2012

NCZ007>011-021>028-038>043-073>078-083>086-088-089-110115-
/O.EXP.KRAH.FW.W.0003.000000T0000Z-120411T0000Z/
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-
WAKE-JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-
ANSON-RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
801 PM EDT TUE APR 10 2012

...RED FLAG WARNING HAS EXPIRED...

THE RED FLAG WARNING IS NO LONGER IN EFFECT.

$$

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 10, 3:45 PM EDTFreeze WatchRAHAlamance, Anson, Chatham, Cumberland, Davidson, Durham and 25 more19 hr

Nearby

Red Flag Warnings in North Carolina, 2012Every red flag warning in 2012

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.