Alert archive / North Carolina / Frost Advisories in 2021
Frost Advisory 1, NWS Raleigh, NC
NWS Raleigh, NC issued this frost advisory at Mar 29, 2021, 3:26 AM EDT for 28 counties in North Carolina. It took effect at Mar 30, 2021, 4:00 AM EDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Mar 29, 2021, 3:26 AM EDT (07:26 UTC)
- In effect from
- Mar 30, 2021, 4:00 AM EDT
- Expired
- Mar 30, 2021, 8:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Raleigh, NC
All 28 counties
Alamance County, NC, Anson County, NC, Chatham 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, Scotland County, NC, Stanly County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Wilson County, NC
The radar
The Raleigh/Durham radar (KRAX), 52 km from the middle of the area, began a volume at 07:24 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 85 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
- 197 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted.
162 WWUS72 KRAH 290726 NPWRAH URGENT - WEATHER MESSAGE National Weather Service Raleigh NC 326 AM EDT Mon Mar 29 2021 NCZ011-027-028-042-043-075>077-083>086-291530- /O.NEW.KRAH.FR.Y.0001.210330T0800Z-210330T1200Z/ Halifax-Nash-Edgecombe-Johnston-Wilson-Moore-Lee-Harnett-Anson- Richmond-Scotland-Hoke- Including the cities of Roanoke Rapids, Enfield, Scotland Neck, Nashville, Spring Hope, Rocky Mount, Tarboro, Princeville, Smithfield, Selma, Clayton, Wilson, Southern Pines, Pinehurst, Aberdeen, Carthage, Sanford, Lillington, Angier, Buies Creek, Erwin, Dunn, Wadesboro, Polkton, Rockingham, Ellerbe, Laurinburg, Camp Mackall, Wagram, and Raeford 326 AM EDT Mon Mar 29 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EDT TUESDAY... * WHAT...Temperatures as low as 34 will result may support scattered frost formation. * WHERE...Portions of central North Carolina. * WHEN...From 4 AM to 8 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive new outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
4 follow-up statements
766 WWUS72 KRAH 291516 NPWRAH URGENT - WEATHER MESSAGE National Weather Service Raleigh NC 1116 AM EDT Mon Mar 29 2021 NCZ007>010-021>026-038>041-073-074-300515- /O.EXA.KRAH.FR.Y.0001.210330T0800Z-210330T1200Z/ Person-Granville-Vance-Warren-Forsyth-Guilford-Alamance-Orange- Durham-Franklin-Davidson-Randolph-Chatham-Wake-Stanly-Montgomery- Including the cities of Roxboro, Oxford, Creedmoor, Henderson, Kittrell, Warrenton, Norlina, Winston-Salem, Greensboro, High Point, Burlington, Graham, Mebane, Hillsborough, Chapel Hill, Carrboro, Durham, Rougemont, Louisburg, Franklinton, Lexington, Thomasville, Asheboro, Archdale, Siler City, Pittsboro, Raleigh, Cary, Apex, Wake Forest, Knightdale, Albemarle, and Troy 1116 AM EDT Mon Mar 29 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM EDT TUESDAY... * WHAT...Temperatures in the mid 30s may support scattered frost formation tonight, especially in outlying, rural areas. * WHERE...Portions of central North Carolina. * WHEN...From 4 AM to 8 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive new outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NCZ011-027-028-042-043-075>077-083>086-300515- /O.CON.KRAH.FR.Y.0001.210330T0800Z-210330T1200Z/ Halifax-Nash-Edgecombe-Johnston-Wilson-Moore-Lee-Harnett-Anson- Richmond-Scotland-Hoke- Including the cities of Roanoke Rapids, Enfield, Scotland Neck, Nashville, Spring Hope, Rocky Mount, Tarboro, Princeville, Smithfield, Selma, Clayton, Wilson, Southern Pines, Pinehurst, Aberdeen, Carthage, Sanford, Lillington, Angier, Buies Creek, Erwin, Dunn, Wadesboro, Polkton, Rockingham, Ellerbe, Laurinburg, Camp Mackall, Wagram, and Raeford 1116 AM EDT Mon Mar 29 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM EDT TUESDAY... * WHAT...Temperatures in the mid 30s may support scattered frost formation tonight, especially in outlying, rural areas. * WHERE...Portions of central North Carolina. * WHEN...From 4 AM to 8 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive new outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
436 WWUS72 KRAH 300115 NPWRAH URGENT - WEATHER MESSAGE National Weather Service Raleigh NC 915 PM EDT Mon Mar 29 2021 NCZ007>011-021>028-038>043-073>077-083>086-301200- /O.CON.KRAH.FR.Y.0001.210330T0800Z-210330T1200Z/ Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham- Wake-Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Anson- Richmond-Scotland-Hoke- Including the cities of Roxboro, Oxford, Creedmoor, Henderson, Kittrell, Warrenton, Norlina, Roanoke Rapids, Enfield, Scotland Neck, Winston-Salem, Greensboro, High Point, Burlington, Graham, Mebane, Hillsborough, Chapel Hill, Carrboro, Durham, Rougemont, Louisburg, Franklinton, Nashville, Spring Hope, Rocky Mount, Tarboro, Princeville, Lexington, Thomasville, Asheboro, Archdale, Siler City, Pittsboro, Raleigh, Cary, Apex, Wake Forest, Knightdale, Smithfield, Selma, Clayton, Wilson, Albemarle, Troy, Southern Pines, Pinehurst, Aberdeen, Carthage, Sanford, Lillington, Angier, Buies Creek, Erwin, Dunn, Wadesboro, Polkton, Rockingham, Ellerbe, Laurinburg, Camp Mackall, Wagram, and Raeford 915 PM EDT Mon Mar 29 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM EDT TUESDAY... * WHAT...Low temperatures in the mid 30s early Tuesday morning may support scattered frost formation, especially in outlying and rural areas. * WHERE...Portions of central North Carolina. * WHEN...From 4 AM to 8 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive new outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
930 WWUS72 KRAH 300930 NPWRAH URGENT - WEATHER MESSAGE National Weather Service Raleigh NC 530 AM EDT Tue Mar 30 2021 NCZ007>011-021>028-038>043-073>077-083>086-301200- /O.CON.KRAH.FR.Y.0001.000000T0000Z-210330T1200Z/ Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham- Wake-Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Anson- Richmond-Scotland-Hoke- Including the cities of Roxboro, Oxford, Creedmoor, Henderson, Kittrell, Warrenton, Norlina, Roanoke Rapids, Enfield, Scotland Neck, Winston-Salem, Greensboro, High Point, Burlington, Graham, Mebane, Hillsborough, Chapel Hill, Carrboro, Durham, Rougemont, Louisburg, Franklinton, Nashville, Spring Hope, Rocky Mount, Tarboro, Princeville, Lexington, Thomasville, Asheboro, Archdale, Siler City, Pittsboro, Raleigh, Cary, Apex, Wake Forest, Knightdale, Smithfield, Selma, Clayton, Wilson, Albemarle, Troy, Southern Pines, Pinehurst, Aberdeen, Carthage, Sanford, Lillington, Angier, Buies Creek, Erwin, Dunn, Wadesboro, Polkton, Rockingham, Ellerbe, Laurinburg, Camp Mackall, Wagram, and Raeford 530 AM EDT Tue Mar 30 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Low temperatures in the mid 30s early Tuesday morning may support scattered frost formation, especially in outlying and rural areas. * WHERE...Portions of central North Carolina. * WHEN...From 4 AM to 8 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive new outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
438 WWUS72 KRAH 301211 NPWRAH URGENT - WEATHER MESSAGE National Weather Service Raleigh NC 811 AM EDT Tue Mar 30 2021 NCZ007>011-021>028-038>043-073>077-083>086-301315- /O.EXP.KRAH.FR.Y.0001.000000T0000Z-210330T1200Z/ Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance- Orange-Durham-Franklin-Nash-Edgecombe-Davidson-Randolph-Chatham- Wake-Johnston-Wilson-Stanly-Montgomery-Moore-Lee-Harnett-Anson- Richmond-Scotland-Hoke- Including the cities of Roxboro, Oxford, Creedmoor, Henderson, Kittrell, Warrenton, Norlina, Roanoke Rapids, Enfield, Scotland Neck, Winston-Salem, Greensboro, High Point, Burlington, Graham, Mebane, Hillsborough, Chapel Hill, Carrboro, Durham, Rougemont, Louisburg, Franklinton, Nashville, Spring Hope, Rocky Mount, Tarboro, Princeville, Lexington, Thomasville, Asheboro, Archdale, Siler City, Pittsboro, Raleigh, Cary, Apex, Wake Forest, Knightdale, Smithfield, Selma, Clayton, Wilson, Albemarle, Troy, Southern Pines, Pinehurst, Aberdeen, Carthage, Sanford, Lillington, Angier, Buies Creek, Erwin, Dunn, Wadesboro, Polkton, Rockingham, Ellerbe, Laurinburg, Camp Mackall, Wagram, and Raeford 811 AM EDT Tue Mar 30 2021 ...FROST ADVISORY HAS EXPIRED... Temperatures are warming into the upper 30s to lower 40s across the area, ending the frost threat. The Frost Advisory will be allowed to expire. $$
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 8:06 PM EDT | Special Weather Statement | RAH | Chatham, Durham, Franklin, Orange | 54 min |
| Mar 28, 8:29 PM EDT | Special Weather Statement | RAH | Granville, Vance, Warren | 46 min |
| Mar 28, 8:38 PM EDT | Special Weather Statement | RAH | Lee, Montgomery, Moore | 67 min |
| Mar 28, 9:02 PM EDT | Special Weather Statement | RAH | Franklin, Nash, Wake | 58 min |
| Mar 28, 9:19 PM EDT | Special Weather Statement | RAH | Cumberland, Harnett, Hoke, Richmond, Scotland | 56 min |
| Mar 28, 9:48 PM EDT | Special Weather Statement | RAH | Edgecombe, Halifax, Johnston, Nash, Wayne, Wilson | 57 min |
Nearby
Frost Advisories in North Carolina, 2021Every frost advisory 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.