Alert archive / North Carolina / Special Weather Statements in 2018
Special Weather Statement, NWS Raleigh, NC
NWS Raleigh, NC issued this special weather statement at Aug 18, 2018, 8:52 PM EDT for Chatham County, Lee County, Wake County, North Carolina. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2018, 8:52 PM EDT (00:52 UTC)
- Expired
- Aug 18, 2018, 9:45 PM EDT
- In force
- 53 min
- Issued by
- NWS Raleigh, NC
Counties Chatham County, NC, Lee County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 49 km from the middle of the area, began a volume at 00:53 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, 0.9 hours before the alert went out and 96 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
- 1189 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 853 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Raleigh, NC wrote its last area forecast discussion before this special weather statement went out at Aug 18, 3:35 PM EDT, 5 hours 17 minutes earlier.
Area forecast discussion, Aug 18, 3:35 PM EDT, 5 hours 17 minutes before
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</html>Hazardous weather outlook, Aug 18, 5:19 AM EDT, 15 hours 33 minutes before
Hazardous Weather Outlook National Weather Service Raleigh NC 519 AM EDT Sat Aug 18 2018 NCZ007>011-021>028-038>043-073>078-083>086-088-089-190930- 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- 519 AM EDT Sat Aug 18 2018 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...Today and Tonight. An approaching cold front will trigger numerous showers and thunderstorms this afternoon and evening. A few storms may be strong to severe with a primary threat from downburst winds. In addition, locally heavy rain may result in flash flooding of poor drainage and urban areas. .DAYS TWO THROUGH SEVEN...Sunday through Friday. The potential for showers and thunderstorms with locally heavy rain and a few strong to severe storms will continue through mid week. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Aug 18, 5:43 PM EDT, 3 hours 9 minutes before
Special Weather Statement
National Weather Service Raleigh NC
543 PM EDT SAT AUG 18 2018
NCZ024-025-182230-
Durham NC-Orange NC-
543 PM EDT SAT AUG 18 2018
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL ORANGE AND DURHAM
COUNTIES UNTIL 630 PM EDT...
At 542 PM EDT, Doppler radar was tracking a strong thunderstorm near
Hillsborough, moving east at 25 mph.
Wind gusts up to 45 mph will be possible with this storm.
Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with this storm.
Locations impacted include...
Durham, Chapel Hill, Hillsborough, Carrboro, Efland, Lake Michie, Eno
River State Park, Gorman, Bahama and Bethesda.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
45 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Cloud to ground lightning is occurring with this storm. Lightning
can strike 10 miles away from a thunderstorm. Seek a safe shelter
inside a building or vehicle.
&&
LAT...LON 3609 7881 3609 7879 3607 7878 3607 7875
3603 7875 3602 7874 3603 7872 3601 7870
3597 7871 3594 7874 3590 7925 3597 7927
3609 7926 3620 7880
TIME...MOT...LOC 2142Z 258DEG 23KT 3601 7917
77Special weather statement, Aug 18, 5:49 PM EDT, 3 hours 3 minutes before
Special Weather Statement
National Weather Service Raleigh NC
549 PM EDT SAT AUG 18 2018
NCZ011-027-028-182245-
Edgecombe NC-Nash NC-Halifax NC-
549 PM EDT SAT AUG 18 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN NASH...
EDGECOMBE AND SOUTHEASTERN HALIFAX COUNTIES UNTIL 645 PM EDT...
At 548 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from near Nashville to 7 miles
east of Elm City. Movement was northeast at 25 mph.
Wind gusts up to 45 mph will be possible with these storms.
Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with these storms.
Locations impacted include...
Rocky Mount, Tarboro, Nashville, Scotland Neck, Dortches, Red Oak,
Enfield, Princeville, Sharpsburg and Pinetops.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
45 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3610 7724 3609 7731 3600 7741 3590 7734
3587 7735 3571 7770 3583 7776 3587 7783
3584 7785 3584 7789 3596 7802 3631 7757
3630 7754 3631 7749 3624 7737 3621 7738
3616 7727 3612 7724 3612 7725 3611 7723
TIME...MOT...LOC 2148Z 236DEG 23KT 3595 7790 3580 7772
77Special weather statement, Aug 18, 6:46 PM EDT, 2 hours 6 minutes before
Special Weather Statement
National Weather Service Raleigh NC
646 PM EDT SAT AUG 18 2018
NCZ011-027-028-182330-
Edgecombe NC-Nash NC-Halifax NC-
646 PM EDT SAT AUG 18 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN NASH...
NORTHERN EDGECOMBE AND SOUTHERN HALIFAX COUNTIES UNTIL 730 PM EDT...
At 645 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from 8 miles north of Dortches
to 7 miles southwest of Lewiston Woodville. Movement was east at 35
mph.
Wind gusts up to 45 mph will be possible with these storms.
Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with these storms.
Locations impacted include...
Halifax, Scotland Neck, Enfield, Whitakers, Hobgood, Castalia,
Glenview, Battleboro, Aventon and Tillery.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
45 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.
Cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3610 7724 3609 7731 3600 7741 3599 7741
3609 7807 3635 7758 3634 7759 3630 7755
3632 7744 3629 7741 3626 7741 3624 7738
3621 7738 3619 7735 3619 7733 3617 7731
3616 7727 3612 7724 3612 7725 3611 7723
TIME...MOT...LOC 2245Z 252DEG 32KT 3613 7790 3605 7729
77Special weather statement, Aug 18, 6:54 PM EDT, 1 hour 58 minutes before
Special Weather Statement
National Weather Service Raleigh NC
654 PM EDT SAT AUG 18 2018
NCZ041-182345-
Wake NC-
654 PM EDT SAT AUG 18 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL WAKE COUNTY
UNTIL 745 PM EDT...
At 653 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from near Raleigh to near Cary
to 9 miles north of Fuquay-Varina. Movement was east at 25 mph.
Wind gusts up to 45 mph will be possible with these storms.
Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with these storms.
Locations impacted include...
Raleigh, Cary, Wake Forest, Garner, Zebulon, Rdu International, Apex,
Holly Springs, Morrisville and Knightdale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
45 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.
Cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3594 7839 3593 7835 3591 7835 3590 7833
3590 7831 3587 7828 3583 7826 3582 7826
3579 7830 3568 7853 3568 7897 3571 7896
3589 7877 3598 7843
TIME...MOT...LOC 2253Z 259DEG 21KT 3584 7872 3578 7874 3572 7885
77Special weather statement, Aug 18, 8:08 PM EDT, 44 minutes before
Special Weather Statement
National Weather Service Raleigh NC
808 PM EDT SAT AUG 18 2018
NCZ039-040-073>076-083-084-190115-
Stanly NC-Richmond NC-Anson NC-Lee NC-Chatham NC-Randolph NC-
Moore NC-Montgomery NC-
808 PM EDT SAT AUG 18 2018
...AN AREA OF SHOWERS AND STRONG THUNDERSTORMS WILL AFFECT MOORE...
NORTHERN ANSON...NORTHERN RICHMOND...MONTGOMERY...SOUTHEASTERN
RANDOLPH...SOUTHEASTERN STANLY...LEE AND SOUTHERN CHATHAM COUNTIES
UNTIL 915 PM EDT...
At 808 PM EDT, Doppler radar was tracking an area of showers and
strong thunderstorms along a line extending from 6 miles south of
Siler City to near Ansonville. Movement was east at 25 mph.
Wind gusts up to 40 mph will be possible with these storms.
Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with these storms.
Locations impacted include...
Sanford, Southern Pines, Troy, Carthage, Pinehurst, Aberdeen, Biscoe,
Ansonville, Hoffman and Goldston.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3520 8028 3570 7959 3568 7897 3561 7899
3558 7892 3527 7922 3524 7918 3502 7954
3508 8029
TIME...MOT...LOC 0008Z 275DEG 21KT 3563 7946 3510 8018
EllisSpecial weather statement, Aug 18, 8:52 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Raleigh NC
852 PM EDT SAT AUG 18 2018
NCZ025-040>042-076-077-190145-
Lee NC-Johnston NC-Chatham NC-Durham NC-Harnett NC-Wake NC-
852 PM EDT SAT AUG 18 2018
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL HARNETT...LEE...WAKE...
NORTHWESTERN JOHNSTON...EASTERN CHATHAM AND SOUTHERN DURHAM COUNTIES
UNTIL 945 PM EDT...
At 852 PM EDT, Doppler radar was tracking a strong thunderstorm near
Fuquay-Varina, or 13 miles southwest of Cary, moving northeast at 25
mph.
Wind gusts up to 40 mph will be possible with this storm.
Heavy rain and minor flooding and deadly cloud to ground lightning
will also be possible with this storm.
Locations impacted include...
Raleigh, Durham, Cary, Sanford, Pittsboro, Lillington, Garner,
Fuquay-Varina, Clayton and Angier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
trash cans, potted plants, lawn furniture and other light outdoor
objects.
Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3606 7871 3562 7830 3525 7917 3525 7919
3527 7922 3528 7922 3531 7919 3533 7923
3568 7932 3586 7903 3586 7902 3587 7901
TIME...MOT...LOC 0052Z 241DEG 21KT 3561 7891
EllisThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:08 PM EDT | Special Weather Statement | RAH | Lee, Montgomery, Moore | 67 min |
| Aug 18, 9:13 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett, Lee, Wake | 32 min |
| Aug 18, 9:55 PM EDT | Special Weather Statement | RAH | Montgomery, Stanly | 65 min |
| Aug 18, 9:58 PM EDT | Special Weather Statement | RAH | Harnett, Johnston, Lee, Moore, Wilson | 77 min |
| Aug 18, 10:00 PM EDT | Special Weather Statement | RAH | Edgecombe, Nash | 60 min |
| Aug 18, 10:17 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Davidson, Montgomery, Moore, Randolph, Stanly | 43 min |
| Aug 18, 10:25 PM EDT | Areal Flood Advisory | RAH | Harnett, Johnston, Lee, Moore, Wake | 3 hr |
| Aug 18, 10:41 PM EDT | Flash Flood Warning | RAH | Harnett, Johnston, Lee, Moore | 2 hr |
| Aug 18, 10:53 PM EDT | Severe Thunderstorm Warning | RAH | Chatham, Harnett, Hoke, Lee, Montgomery, Moore and 1 more | 67 min |
| Aug 18, 11:00 PM EDT | Special Weather Statement | RAH | Edgecombe | 45 min |
| Aug 18, 11:09 PM EDT | Special Weather Statement | RAH | Edgecombe | 66 min |
| Aug 18, 11:12 PM EDT | Special Weather Statement | RAH | Harnett, Johnston, Wayne | 63 min |
| Aug 18, 11:36 PM EDT | Special Weather Statement | RAH | Moore | 54 min |
| Aug 18, 11:52 PM EDT | Areal Flood Advisory | RAH | Chatham, Lee, Wake | 107 min |
| Aug 19, 12:17 AM EDT | Special Weather Statement | RAH | Harnett | 43 min |
| Aug 19, 12:21 AM EDT | Special Weather Statement | RAH | Johnston, Wayne, Wilson | 54 min |
| Aug 19, 3:40 PM EDT | Special Weather Statement | RAH | Granville, Vance, Warren | 65 min |
| Aug 19, 4:31 PM EDT | Special Weather Statement | RAH | Forsyth | 44 min |
| Aug 19, 5:01 PM EDT | Special Weather Statement | RAH | Granville, Vance | 59 min |
| Aug 19, 5:02 PM EDT | Areal Flood Advisory | RAH | Davidson, Forsyth | 44 min |
| Aug 19, 5:52 PM EDT | Special Weather Statement | RAH | Davidson | 53 min |
| Aug 19, 7:00 PM EDT | Areal Flood Advisory | RAH | Person | 3 hr |
| Aug 19, 7:37 PM EDT | Flash Flood Warning | RAH | Granville, Person | 6 hr |
Nearby
Special Weather Statements in North Carolina, 2018Every special weather statement in 2018
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.