Alert archive / North Carolina / Special Weather Statements in 2021
Special Weather Statement, NWS Raleigh, NC
NWS Raleigh, NC issued this special weather statement at Apr 10, 2021, 11:31 PM EDT for Alamance County, Chatham County, Moore County, North Carolina. It was in force for 59 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
- Apr 10, 2021, 11:31 PM EDT (03:31 UTC)
- Expired
- Apr 11, 2021, 12:30 AM EDT
- In force
- 59 min
- Issued by
- NWS Raleigh, NC
Counties Alamance County, NC, Chatham County, NC, Moore County, NC
The radar
The Raleigh/Durham radar (KRAX), 85 km from the middle of the area, began a volume at 03:32 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, 3.5 hours before the alert went out and 52 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
- 205 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 741 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 261 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
The text
As transmitted.
150
WWUS82 KRAH 110331
SPSRAH
Special Weather Statement
National Weather Service Raleigh NC
1131 PM EDT Sat Apr 10 2021
NCZ023-024-039-040-074>076-084-110430-
Richmond NC-Lee NC-Chatham NC-Alamance NC-Randolph NC-Orange NC-
Montgomery NC-Moore NC-
1131 PM EDT Sat Apr 10 2021
...A LINE OF SHOWERS AND THUNDERSTORMS WITH GUSTY WINDS WILL AFFECT
ALAMANCE...MOORE... WESTERN ORANGE...SOUTHEASTERN MONTGOMERY...NORTH
CENTRAL RICHMOND... SOUTHEASTERN RANDOLPH...NORTHWESTERN LEE AND
CHATHAM COUNTIES UNTIL 1230 AM EDT...
At 1129 PM EDT, Doppler radar was tracking a line of showers and
thunderstorms along a line extending from 10 miles northwest of
Siler City to 8 miles northwest of Hoffman. Movement was northeast
at 40 mph.
Heavy rain and wind gusts up to 40 mph will be possible with these
storms.
Locations impacted include...
Burlington, Sanford, Graham, Pittsboro, Carthage, Siler City,
Pinehurst, Mebane, Goldston and Liberty.
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.
&&
LAT...LON 3624 7911 3542 7922 3500 7974 3578 7968
3590 7954 3595 7954 3625 7929
TIME...MOT...LOC 0329Z 216DEG 33KT 3581 7961 3510 7969
$$
JDThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 10:28 PM EDT | Special Weather Statement | RAH | Montgomery, Randolph, Richmond | 62 min |
| Apr 10, 10:36 PM EDT | Special Weather Statement | RAH | Davidson, Forsyth, Guilford | 54 min |
| Apr 10, 11:36 PM EDT | Special Weather Statement | RAH | Cumberland, Harnett | 54 min |
| Apr 11, 12:32 AM EDT | Special Weather Statement | RAH | Johnston, Sampson | 58 min |
| Apr 11, 12:40 AM EDT | Special Weather Statement | RAH | Durham, Granville, Lee, Orange, Person, Wake | 65 min |
| Apr 11, 1:27 AM EDT | Special Weather Statement | RAH | Wayne | 33 min |
Nearby
Special Weather Statements in North Carolina, 2021Every special weather statement 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.