Alert archive / North Carolina / Special Weather Statements in 2020
Special Weather Statement, NWS Raleigh, NC
NWS Raleigh, NC issued this special weather statement at Aug 6, 2020, 2:27 AM EDT for Alamance County, Orange County, Person County, North Carolina. It was in force for 78 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 6, 2020, 2:27 AM EDT (06:27 UTC)
- Expired
- Aug 6, 2020, 3:45 AM EDT
- In force
- 78 min
- Issued by
- NWS Raleigh, NC
Counties Alamance County, NC, Orange County, NC, Person County, NC
The radar
The Raleigh/Durham radar (KRAX), 81 km from the middle of the area, began a volume at 06:30 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, 6.5 hours before the alert went out and 73 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
- 1840 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1137 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.3
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 6, 2:00 AM EDT, 27 minutes earlier.
Area forecast discussion, Aug 6, 2:00 AM EDT, 27 minutes before
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</html>Hazardous weather outlook, Aug 5, 6:48 AM EDT, 19 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Raleigh NC 648 AM EDT Wed Aug 5 2020 NCZ007>011-021>028-038>043-073>078-083>086-088-089-061100- 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- 648 AM EDT Wed Aug 5 2020 This Hazardous Weather Outlook is for central North Carolina. .DAY ONE...Today and tonight. Widespread hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Scattered to numerous showers and thunderstorms are expected Thursday afternoon into the evening hours. A few of these storms may become strong to locally severe, with the main hazard of damaging wind gusts. Locally heavy rain may also pose a risk of flooding mainly in urban and poor drainage areas. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Aug 5, 8:54 PM EDT, 5 hours 33 minutes before
Special Weather Statement
National Weather Service Raleigh NC
854 PM EDT Wed Aug 5 2020
NCZ021-022-060130-
Guilford NC-Forsyth NC-
854 PM EDT Wed Aug 5 2020
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN FORSYTH AND
NORTHWESTERN GUILFORD COUNTIES UNTIL 930 PM EDT...
At 853 PM EDT, Doppler radar was tracking a strong thunderstorm near
Germanton, or near Walnut Cove, moving north at 15 mph.
Pea size hail and wind gusts up to 40 mph will be possible with this
storm.
Heavy rain and minor flooding will also be possible with this storm.
Locations impacted include...
Winston-Salem, Kernersville, Summerfield, Stokesdale, Walkertown,
Rural Hall, Pfafftown, Belews Creek, Stanleyville and Lake Brandt.
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
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.
&&
LAT...LON 3614 8044 3621 8045 3622 8043 3624 8045
3626 8045 3625 7977 3612 7987 3612 8046
TIME...MOT...LOC 0053Z 197DEG 13KT 3620 8018
10Special weather statement, Aug 5, 10:59 PM EDT, 3 hours 28 minutes before
Special Weather Statement
National Weather Service Raleigh NC
1059 PM EDT Wed Aug 5 2020
NCZ021-038-060430-
Forsyth NC-Davidson NC-
1059 PM EDT Wed Aug 5 2020
...THUNDERSTORMS WITH FREQUENT LIGHTNING AND VERY HEAVY RAIN ALONG
THE YADKIN AND FORSYTH COUNTY LINE WILL AFFECT WESTERN FORSYTH AND
NORTH CENTRAL DAVIDSON COUNTIES UNTIL 1230 AM EDT...
At 1053 PM EDT, radar indicated thunderstorms with very heavy rain
from Lone Hickory and Huntsville in Yadkin County north and east to
near Lewisville and Clemmons in Forsyth County. These storms were
developing southeast at 5 to 10 mph into the Clemmons and Arcadia to
the west side of Winston-Salem.
Very heavy rain in excess of an inch in 20 minutes and minor
flooding and deadly cloud to ground lightning will be possible with
these storms.
Locations impacted include...
Winston-Salem, Clemmons, Bermuda Run, Huntsville, Lewisville, Rural
Hall, Arcadia, Stanleyville, Pfafftown and Donnaha.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3611 8050 3612 8046 3614 8044 3621 8045
3622 8043 3624 8045 3626 8045 3626 8026
3625 8023 3617 8021 3602 8014 3591 8037
3596 8038 3599 8042 3601 8042 3606 8046
3604 8049 3608 8052
TIME...MOT...LOC 0253Z 324DEG 5KT 3609 8048
PWBSpecial weather statement, Aug 6, 12:33 AM EDT, 1 hour 54 minutes before
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</html>Special weather statement, Aug 6, 2:27 AM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 8:54 PM EDT | Special Weather Statement | RAH | Forsyth | 36 min |
| Aug 5, 10:59 PM EDT | Special Weather Statement | RAH | Forsyth | 91 min |
| Aug 5, 11:32 PM EDT | Areal Flood Advisory | RAH | Davidson, Forsyth | 100 min |
| Aug 6, 12:02 AM EDT | Flash Flood Warning | RAH | Forsyth | 86 min |
| Aug 6, 12:33 AM EDT | Special Weather Statement | RAH | Guilford | 57 min |
| Aug 6, 3:12 AM EDT | Special Weather Statement | RAH | Granville, Orange, Person | 63 min |
| Aug 6, 1:05 PM EDT | Special Weather Statement | RAH | Sampson | 55 min |
| Aug 6, 1:43 PM EDT | Special Weather Statement | RAH | Durham | 62 min |
| Aug 6, 2:03 PM EDT | Severe Thunderstorm Warning | RAH | Durham, Franklin, Granville, Wake | 57 min |
| Aug 6, 3:05 PM EDT | Special Weather Statement | RAH | Harnett, Lee | 55 min |
| Aug 6, 3:26 PM EDT | Special Weather Statement | RAH | Orange | 34 min |
| Aug 6, 3:27 PM EDT | Special Weather Statement | RAH | Franklin, Nash, Wake | 63 min |
| Aug 6, 3:42 PM EDT | Severe Thunderstorm Warning | RAH | Franklin, Johnston, Nash, Wake, Wilson | 48 min |
| Aug 6, 4:13 PM EDT | Flash Flood Warning | RAH | Harnett | 2 hr |
| Aug 6, 4:31 PM EDT | Special Weather Statement | RAH | Johnston | 59 min |
| Aug 6, 4:45 PM EDT | Special Weather Statement | RAH | Montgomery | 60 min |
| Aug 6, 4:56 PM EDT | Areal Flood Advisory | RAH | Franklin, Johnston, Nash, Wake, Wilson | 3 hr |
| Aug 6, 5:43 PM EDT | Severe Thunderstorm Warning | RAH | Person | 47 min |
| Aug 6, 6:03 PM EDT | Special Weather Statement | RAH | Forsyth, Guilford | 57 min |
| Aug 6, 6:26 PM EDT | Flash Flood Warning | RAH | Forsyth | 3 hr |
| Aug 6, 6:32 PM EDT | Severe Thunderstorm Warning | RAH | Forsyth, Guilford | 43 min |
| Aug 6, 6:45 PM EDT | Flash Flood Warning | RAH | Guilford | 8 hr |
| Aug 6, 7:03 PM EDT | Flash Flood Warning | RAH | Davidson | 4 hr |
| Aug 6, 7:48 PM EDT | Special Weather Statement | RAH | Davidson, Guilford, Randolph | 57 min |
Nearby
Special Weather Statements in North Carolina, 2020Every special weather statement in 2020
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.