Alert archive / North Carolina / Red Flag Warnings in 2021
Red Flag Warning 1, NWS Raleigh, NC
NWS Raleigh, NC issued this red flag warning at Apr 21, 2021, 3:22 AM EDT for 23 counties in North Carolina. It took effect at Apr 21, 2021, 2:00 PM EDT. It was in force for 6 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 21, 2021, 3:22 AM EDT (07:22 UTC)
- In effect from
- Apr 21, 2021, 2:00 PM EDT
- Expired
- Apr 21, 2021, 8:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Raleigh, NC
All 23 counties
Alamance County, NC, Anson County, NC, Chatham County, NC, Davidson County, NC, Durham County, NC, Forsyth County, NC, Franklin County, NC, Granville County, NC, Guilford County, NC, Harnett County, NC, Hoke County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Orange County, NC, Person County, NC, Randolph County, NC, Richmond County, NC, Scotland County, NC, Stanly County, NC, Vance County, NC, Wake County, NC, Warren County, NC
The radar
The Raleigh/Durham radar (KRAX), 74 km from the middle of the area, began a volume at 07:26 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, 7.4 hours before the alert went out and 67 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
- 2214 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
430 WWUS82 KRAH 210722 RFWRAH URGENT - FIRE WEATHER MESSAGE National Weather Service Raleigh NC 322 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING THIS AFTERNOON... .A dry cold front will move through the region by mid-day. It will become windy and dry this afternoon increasing the fire danger concerns. NCZ007>010-021>026-038>041-073>077-083>086-211530- /O.UPG.KRAH.FW.A.0001.210421T1800Z-210422T0000Z/ /O.NEW.KRAH.FW.W.0001.210421T1800Z-210422T0000Z/ Person-Granville-Vance-Warren-Forsyth-Guilford-Alamance-Orange- Durham-Franklin-Davidson-Randolph-Chatham-Wake-Stanly-Montgomery- Moore-Lee-Harnett-Anson-Richmond-Scotland-Hoke- 322 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING FOR FOR THE PIEDMONT AND SANDHILLS... The National Weather Service in Raleigh has issued a Red Flag Warning for the Piedmont and Sandhills, which is in effect from 2 PM this afternoon to 8 PM EDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 007 Person, Fire Weather Zone 008 Granville, Fire Weather Zone 009 Vance, Fire Weather Zone 010 Warren, Fire Weather Zone 021 Forsyth, Fire Weather Zone 022 Guilford, Fire Weather Zone 023 Alamance, Fire Weather Zone 024 Orange, Fire Weather Zone 025 Durham, Fire Weather Zone 026 Franklin, Fire Weather Zone 038 Davidson, Fire Weather Zone 039 Randolph, Fire Weather Zone 040 Chatham, Fire Weather Zone 041 Wake, Fire Weather Zone 073 Stanly, Fire Weather Zone 074 Montgomery, Fire Weather Zone 075 Moore, Fire Weather Zone 076 Lee, Fire Weather Zone 077 Harnett, Fire Weather Zone 083 Anson, Fire Weather Zone 084 Richmond, Fire Weather Zone 085 Scotland and Fire Weather Zone 086 Hoke. * TIMING...Wednesday afternoon and evening. * WINDS...Northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...High temperatures in the upper 60s. * FUEL MOISTURE...Already seasonably low, under 10 percent, and likely to drop further with no wetting rain in the forecast through Wednesday. * IMPACTS...Outdoor fires may easily grow out of control in these conditions. 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 dangerous fire behavior. && $$
2 follow-up statements
883 WWUS82 KRAH 211501 RFWRAH URGENT - FIRE WEATHER MESSAGE National Weather Service Raleigh NC 1101 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING THIS AFTERNOON... .A dry cold front will move through the region through the early afternoon. It will become windy and dry this afternoon increasing the fire danger concerns. NCZ007>010-021>026-038>041-073>077-083>086-220000- /O.CON.KRAH.FW.W.0001.210421T1800Z-210422T0000Z/ Person-Granville-Vance-Warren-Forsyth-Guilford-Alamance-Orange- Durham-Franklin-Davidson-Randolph-Chatham-Wake-Stanly-Montgomery- Moore-Lee-Harnett-Anson-Richmond-Scotland-Hoke- 1101 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING FOR FOR THE PIEDMONT AND SANDHILLS... * AFFECTED AREA...Fire Weather Zone 007 Person, Fire Weather Zone 008 Granville, Fire Weather Zone 009 Vance, Fire Weather Zone 010 Warren, Fire Weather Zone 021 Forsyth, Fire Weather Zone 022 Guilford, Fire Weather Zone 023 Alamance, Fire Weather Zone 024 Orange, Fire Weather Zone 025 Durham, Fire Weather Zone 026 Franklin, Fire Weather Zone 038 Davidson, Fire Weather Zone 039 Randolph, Fire Weather Zone 040 Chatham, Fire Weather Zone 041 Wake, Fire Weather Zone 073 Stanly, Fire Weather Zone 074 Montgomery, Fire Weather Zone 075 Moore, Fire Weather Zone 076 Lee, Fire Weather Zone 077 Harnett, Fire Weather Zone 083 Anson, Fire Weather Zone 084 Richmond, Fire Weather Zone 085 Scotland and Fire Weather Zone 086 Hoke. * TIMING...This afternoon and evening. * WINDS...Northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...High temperatures in the upper 60s. * FUEL MOISTURE...Already seasonably low, under 10 percent, and likely to drop further with no wetting rain in the forecast through Wednesday. * IMPACTS...Outdoor fires may easily grow out of control in these conditions. 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 dangerous fire behavior. && $$
560 WWUS82 KRAH 220006 RFWRAH URGENT - FIRE WEATHER MESSAGE National Weather Service Raleigh NC 806 PM EDT Wed Apr 21 2021 ...RED FLAG WARNING EXPIRING AT 8 PM THIS EVENING... .Winds will gradually relax tonight. NCZ007>010-021>026-038>041-073>077-083>086-220115- /O.EXP.KRAH.FW.W.0001.000000T0000Z-210422T0000Z/ Person-Granville-Vance-Warren-Forsyth-Guilford-Alamance-Orange- Durham-Franklin-Davidson-Randolph-Chatham-Wake-Stanly-Montgomery- Moore-Lee-Harnett-Anson-Richmond-Scotland-Hoke- 806 PM EDT Wed Apr 21 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTH CAROLINA PIEDMONT. Winds will gradually relax tonight. Winds will become strong and gusty again tomorrow, combined with relative humidity values around 20 percent Increased Fire Danger is once again expected. $$
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 10:58 AM EDT | Frost Advisory | RAH | Cumberland, Edgecombe, Halifax, Harnett, Hoke, Johnston and 6 more | 21 hr |
| Apr 21, 10:58 AM EDT | Freeze Warning | RAH | Alamance, Anson, Chatham, Davidson, Durham, Forsyth and 13 more | 21 hr |
Nearby
Red Flag Warnings in North Carolina, 2021Every red flag warning in 2021
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.