Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 97, NWS Raleigh, NC

July 5, 2020Harnett County, Johnston County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jul 5, 2020, 5:04 PM EDT for Harnett County, Johnston County, North Carolina. It was in force for 41 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: Jul 5, 2020, 5:04 PM EDT (21:04 UTC)
Expired: Jul 5, 2020, 5:45 PM EDT
In force: 41 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Harnett County, NC, Johnston County, NC

The radar

The Raleigh/Durham radar (KRAX), 27 km from the middle of the area, began a volume at 21:08 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 12:00Z, 9.1 hours before the alert went out and 136 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 667 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1308 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 5, 4:39 PM EDT, 25 minutes earlier.

Area forecast discussion, Jul 5, 4:39 PM EDT, 25 minutes before

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Hazardous weather outlook, Jul 5, 2:03 PM EDT, 3 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Raleigh NC
203 PM EDT Sun Jul 5 2020

NCZ007-008-021>028-038>043-073>078-083>086-088-089-061815-
Person-Granville-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-
203 PM EDT Sun Jul 5 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Scattered, slow-moving thunderstorms will be capable of producing
damaging wind gusts through this evening. Briefly heavy downpours
and minor flooding may also result in urban and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ009>011-061815-
Vance-Warren-Halifax-
203 PM EDT Sun Jul 5 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 5, 2:24 PM EDT, 2 hours 40 minutes before

Special Weather Statement
National Weather Service Raleigh NC
224 PM EDT Sun Jul 5 2020

NCZ008-026-041-051930-
Franklin NC-Wake NC-Granville NC-
224 PM EDT Sun Jul 5 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL GRANVILLE...
NORTHEASTERN WAKE AND WEST CENTRAL FRANKLIN COUNTIES UNTIL 330 PM
EDT...

At 224 PM EDT, Doppler radar was tracking a strong thunderstorm near
Wake Forest, or 10 miles southeast of Creedmoor, moving northeast at
5 mph.

Wind gusts up to 45 mph will be possible with this storm.

Locations impacted include...
Raleigh, Wake Forest, Rolesville, Youngsville, Falls Lake, Falls Lake
State Rec Area, Falls Lake Boat Ramp and Purnell.

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.

&&

LAT...LON 3605 7842 3594 7840 3586 7848 3585 7864
      3593 7874 3594 7874 3597 7871 3601 7870
      3603 7872 3602 7873 3603 7875 3607 7875
      3610 7864 3611 7852
TIME...MOT...LOC 1824Z 219DEG 5KT 3599 7858

10

Special weather statement, Jul 5, 3:09 PM EDT, 1 hour 55 minutes before

Special Weather Statement
National Weather Service Raleigh NC
309 PM EDT Sun Jul 5 2020

NCZ025-041-052015-
Durham NC-Wake NC-
309 PM EDT Sun Jul 5 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN WAKE AND
SOUTHEASTERN DURHAM COUNTIES UNTIL 415 PM EDT...

At 308 PM EDT, Doppler radar was tracking a strong thunderstorm over
RDU International, or near Cary, moving northeast at 5 mph.

Wind gusts up to 45 mph will be possible with this storm.

Heavy rain and minor flooding will also be possible with this storm.

Locations impacted include...
Raleigh, Durham, Cary, RDU International, Morrisville, Research
Triangle, William B Umstead State Park, Bethesda and Carpenter.

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 3596 7865 3588 7859 3578 7860 3572 7877
      3579 7893 3592 7888 3598 7884 3599 7871
TIME...MOT...LOC 1908Z 241DEG 5KT 3586 7876

10

Special weather statement, Jul 5, 3:49 PM EDT, 1 hour 15 minutes before

Special Weather Statement
National Weather Service Raleigh NC
349 PM EDT Sun Jul 5 2020

NCZ089-052045-
Sampson NC-
349 PM EDT Sun Jul 5 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SAMPSON COUNTY
UNTIL 445 PM EDT...

At 341 PM EDT, Doppler radar was tracking a strong thunderstorm near
Bowdens, or 9 miles northeast of Clinton, moving north at 15 mph.

Pea size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Turkey and Hobbton.

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 3508 7835 3522 7838 3526 7830 3522 7824
      3520 7816 3509 7817 3508 7816 3501 7815
      3499 7816 3497 7820
TIME...MOT...LOC 1941Z 166DEG 12KT 3510 7821

22

Special weather statement, Jul 5, 3:57 PM EDT, 1 hour 7 minutes before

Special Weather Statement
National Weather Service Raleigh NC
357 PM EDT Sun Jul 5 2020

NCZ041-052045-
Wake NC-
357 PM EDT Sun Jul 5 2020

...A STRONG THUNDERSTORMS WILL AFFECT SOUTHERN WAKE COUNTY UNTIL 445
PM EDT...

At 355 PM EDT, Doppler radar was tracking nearly stationary strong
thunderstorms near Fuquay-Varina and Garner.

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

Locations impacted include...
Raleigh, Cary, Garner, Fuquay-Varina, Apex, Holly Springs, Lake
Wheeler and Lake Benson.

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 3569 7857 3559 7862 3558 7863 3556 7883
      3573 7888 3580 7863
TIME...MOT...LOC 1955Z 164DEG 9KT 3563 7877

22

Special weather statement, Jul 5, 4:53 PM EDT, 11 minutes before

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Special weather statement, Jul 5, 4:57 PM EDT, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 1:39 PM EDT	Special Weather Statement	RAH	Durham	66 min
Jul 5, 1:52 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Orange	53 min
Jul 5, 2:24 PM EDT	Special Weather Statement	RAH	Wake	66 min
Jul 5, 2:49 PM EDT	Areal Flood Advisory	RAH	Chatham, Durham, Wake	116 min
Jul 5, 3:09 PM EDT	Special Weather Statement	RAH	Wake	66 min
Jul 5, 3:49 PM EDT	Special Weather Statement	RAH	Sampson	56 min
Jul 5, 3:57 PM EDT	Special Weather Statement	RAH	Wake	48 min
Jul 5, 4:09 PM EDT	Severe Thunderstorm Warning	RAH	Wake	51 min
Jul 5, 4:53 PM EDT	Special Weather Statement	RAH	Wayne	52 min
Jul 5, 4:57 PM EDT	Special Weather Statement	RAH	Harnett	63 min
Jul 5, 5:36 PM EDT	Areal Flood Advisory	RAH	Johnston	114 min
Jul 5, 7:40 PM EDT	Severe Thunderstorm Warning	RAH	Davidson, Forsyth, Guilford	50 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2020 Every severe thunderstorm warning 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.