Alert archive / North Carolina / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 185, NWS Raleigh, NC

August 13, 2019Anson County, Montgomery County, Richmond County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Aug 13, 2019, 4:04 PM EDT for Anson County, Montgomery County, Richmond County, North Carolina. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 13, 2019, 4:04 PM EDT (20:04 UTC)
Expired
Aug 13, 2019, 5:00 PM EDT
In force
56 min
Issued by
NWS Raleigh, NC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Anson County, NC, Montgomery County, NC, Richmond County, NC

The radar

The Raleigh/Durham radar (KRAX), 144 km from the middle of the area, began a volume at 20:06 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 13, 2:58 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.1 hours before the alert went out and 109 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2019-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 560 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2019-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
560 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
941 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.2
Supercell composite
0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 13, 4:00 PM EDT, 4 minutes earlier.

Area forecast discussion, Aug 13, 4:00 PM EDT, 4 minutes before
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Hazardous weather outlook, Aug 13, 3:56 PM EDT, 8 minutes before
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In the hours before

Special weather statement, Aug 13, 2:57 PM EDT, 1 hour 7 minutes before
Special Weather Statement
National Weather Service Raleigh NC
257 PM EDT Tue Aug 13 2019

NCZ008>010-132000-
Vance NC-Warren NC-Granville NC-
257 PM EDT Tue Aug 13 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN WARREN...NORTHERN VANCE
AND NORTHERN GRANVILLE COUNTIES UNTIL 400 PM EDT...

At 257 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms near the Virginia-North Carolina border, near
Clarksville, or 15 miles north of Henderson, moving east at 30 mph.

Wind gusts up to 50 mph will be possible with this storm.

Deadly cloud to ground lightning will also be possible with this
storm.

Locations impacted include...
Warrenton, Norlina, Littleton, Stovall, Middleburg, Macon, Steele
Creek Marina & Campground, Kerr Lake, Lake Gaston and Wise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

Boaters on the open water and those camping outdoors are especially
vulnerable to the dangers of lightning. Seek harbor immediately and
find safe shelter in a nearby building or vehicle.

&&

A severe thunderstorm watch remains in effect until 700 PM EDT for
central North Carolina. A severe thunderstorm watch also remains in
effect until 900 PM EDT for central North Carolina.

LAT...LON 3636 7792 3643 7876 3654 7874 3654 7790
TIME...MOT...LOC 1857Z 276DEG 25KT 3655 7848

BLAES
Special weather statement, Aug 13, 3:06 PM EDT, 58 minutes before
Special Weather Statement
National Weather Service Raleigh NC
306 PM EDT Tue Aug 13 2019

NCZ023>025-040-132000-
Chatham NC-Durham NC-Alamance NC-Orange NC-
306 PM EDT Tue Aug 13 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN ALAMANCE...SOUTHERN
ORANGE...NORTHEASTERN CHATHAM AND SOUTHWESTERN DURHAM COUNTIES UNTIL
400 PM EDT...

At 306 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Graham, moving east at 20 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Durham, Chapel Hill, Hillsborough, Carrboro, Swepsonville, Snow Camp,
Parkwood, Sutphin, Jordan Lake and Fearrington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

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.

&&

A severe thunderstorm watch remains in effect until 700 PM EDT for
central North Carolina. A severe thunderstorm watch also remains in
effect until 900 PM EDT for central North Carolina.

LAT...LON 3609 7883 3578 7894 3584 7943 3603 7943
TIME...MOT...LOC 1906Z 269DEG 16KT 3593 7936

BLAES
Special weather statement, Aug 13, 3:12 PM EDT, 52 minutes before
Special Weather Statement
National Weather Service Raleigh NC
312 PM EDT Tue Aug 13 2019

NCZ073>075-132000-
Stanly NC-Moore NC-Montgomery NC-
312 PM EDT Tue Aug 13 2019

...A CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN
MOORE...MONTGOMERY AND NORTHEASTERN STANLY COUNTIES UNTIL 400 PM
EDT...

At 310 PM EDT, Doppler radar was tracking a strong thunderstorm near
Troy, moving east at 20 mph. Another strong thunderstorm was located
north of Albemarle, approaching Badin Lake.

Dime size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Albemarle, Troy, Badin Lake, Biscoe, Badin, Robbins, Star, Candor,
Richfield and New London.

LAT...LON 3551 8006 3551 7955 3516 7960 3527 8007
      3537 8027 3541 8026 3547 8029
TIME...MOT...LOC 1910Z 287DEG 19KT 3544 7998

WSS
Special weather statement, Aug 13, 3:22 PM EDT, 42 minutes before
Special Weather Statement
National Weather Service Raleigh NC
322 PM EDT Tue Aug 13 2019

NCZ021-132015-
Forsyth NC-
322 PM EDT Tue Aug 13 2019

...A LINE OF STRONG OR SEVERE THUNDERSTORMS APPROACHING THE TRIAD
REGION...

At 320 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from near Sandy Ridge to near
Mountain Park to near North Wilkesboro. Movement was east at 35 to
40 mph.

Wind gusts of 50 to 55 mph will be possible with these storms. If
the storms maintain their current intensity, a severe thunderstorm
warning may be needed for sections of the Triad.

Locations impacted include...
Winston-Salem, Clemmons, Bermuda Run, Huntsville, Lewisville,
Walkertown, Rural Hall, Pfafftown, Stanleyville and Belews Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

&&

LAT...LON 3611 8051 3612 8046 3614 8044 3621 8045
      3622 8043 3624 8045 3626 8045 3626 8004
      3620 8004 3599 8028 3600 8032 3597 8040
      3599 8042 3601 8042 3606 8046 3604 8049
      3605 8051 3609 8052
TIME...MOT...LOC 1920Z 277DEG 34KT 3651 8018 3636 8086 3616 8108

WSS
Local storm report, Aug 13, 3:27 PM EDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
327 PM EDT TUE AUG 13 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0320 PM     HAIL             1 N SAXAPAHAW           35.96N 79.32W
08/13/2019  M0.25 INCH       ALAMANCE           NC   TRAINED SPOTTER

            INTERMITTENT PEA-SIZED HAIL AT SWEPSONVILLE
            SAXAPHAW RD AND ANDOVER DR.

&&

JFD
Special weather statement, Aug 13, 3:39 PM EDT, 25 minutes before
Special Weather Statement
National Weather Service Raleigh NC
339 PM EDT Tue Aug 13 2019

NCZ007-008-132045-
Person NC-Granville NC-
339 PM EDT Tue Aug 13 2019

...A STRONG THUNDERSTORM WILL AFFECT PERSON AND NORTHWESTERN
GRANVILLE COUNTIES UNTIL 445 PM EDT...

At 338 PM EDT, Doppler radar was tracking a strong thunderstorm over
Hamer, or near Providence, moving east at 30 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Deadly cloud to ground lightning will also be possible with this
storm.

Locations impacted include...
Roxboro, Concord, Bethel Hill, Hyco Lake, Mayo Reservoir, Hyco
Marina, Berea and Surl.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

&&

A severe thunderstorm watch remains in effect until 700 PM EDT for
central North Carolina. A severe thunderstorm watch also remains in
effect until 900 PM EDT for central North Carolina.

LAT...LON 3627 7871 3634 7915 3654 7914 3654 7868
TIME...MOT...LOC 1938Z 274DEG 27KT 3647 7927

BLAES

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 13, 2:57 PM EDTSpecial Weather StatementRAHWarren63 min
Aug 13, 3:06 PM EDTSpecial Weather StatementRAHDurham54 min
Aug 13, 3:10 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Orange29 min
Aug 13, 3:12 PM EDTSpecial Weather StatementRAHMontgomery48 min
Aug 13, 3:20 PM EDTSevere Thunderstorm WarningRAHVance, Warren40 min
Aug 13, 3:22 PM EDTSpecial Weather StatementRAHForsyth53 min
Aug 13, 3:39 PM EDTSpecial Weather StatementRAHPerson66 min
Aug 13, 3:46 PM EDTSevere Thunderstorm WarningRAHPerson59 min
Aug 13, 3:49 PM EDTSevere Thunderstorm WarningRAHDavidson, Forsyth, Guilford56 min
Aug 13, 4:01 PM EDTSevere Thunderstorm WarningRAHHalifax, Warren59 min
Aug 13, 4:14 PM EDTSpecial Weather StatementRAHFranklin, Granville61 min
Aug 13, 4:34 PM EDTSevere Thunderstorm WarningRAHDurham, Franklin, Granville, Halifax, Nash, Vance and 1 more56 min
Aug 13, 4:35 PM EDTSevere Thunderstorm WarningRAHDavidson, Forsyth, Guilford, Randolph55 min
Aug 13, 4:35 PM EDTSevere Thunderstorm WarningRAHChatham, Durham, Wake40 min
Aug 13, 5:05 PM EDTSpecial Weather StatementRAHAlamance, Orange40 min
Aug 13, 5:12 PM EDTSpecial Weather StatementRAHHoke63 min
Aug 13, 5:16 PM EDTSpecial Weather StatementRAHHalifax59 min
Aug 13, 5:22 PM EDTSevere Thunderstorm WarningRAHAlamance, Chatham, Orange38 min
Aug 13, 5:26 PM EDTSevere Thunderstorm WarningRAHChatham, Davidson, Montgomery, Moore, Randolph23 min
Aug 13, 5:26 PM EDTSevere Thunderstorm WarningRAHFranklin, Nash64 min
Aug 13, 5:48 PM EDTSevere Thunderstorm WarningRAHEdgecombe, Wilson57 min
Aug 13, 5:58 PM EDTSpecial Weather StatementRAHChatham, Wake47 min
Aug 13, 6:21 PM EDTSevere Thunderstorm WarningRAHJohnston, Wake, Wayne39 min
Aug 13, 6:38 PM EDTSpecial Weather StatementRAHWayne67 min
Aug 13, 6:50 PM EDTSpecial Weather StatementRAHWayne, Wilson40 min
Aug 13, 7:03 PM EDTSevere Thunderstorm WarningRAHJohnston, Wayne42 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2019Every severe thunderstorm warning in 2019

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.